UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                                  SCHEDULE 13D
                   Under the Securities Exchange Act of 1934
                               (Amendment No. 1)*


                                  AEROGEN, INC.
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                                (Name of Issuer)

                     Common Stock, par value $0.001 per share
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                         (Title of Class of Securities)

                                    007779309
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                                 (CUSIP Number)

   Mitchell D. Kaye, Manager                        with a copy to:
   Xmark Asset Management, LLC                      Steven E. Siesser, Esq.
   301 Tresser Blvd.                                Lowenstein Sandler PC
   Suite 1320                                       65 Livingston Avenue
   Stamford, Connecticut 06901                      Roseland, New Jersey  07068
   (203) 653-2511                                   (973) 597-2506
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                 (Name, Address and Telephone Number of Person
                Authorized to Receive Notices and Communications)

                                January 19, 2005
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             (Date of Event which Requires Filing of this Statement)


If the filing person has previously  filed a statement on Schedule l3G to report
the  acquisition  that is the subject of this  Schedule  13D, and is filing this
schedule  because of Sections 240.13d-1(e),  240.13d-1(f) or 240.13d-1(g), check
the following box. [ ]

Note:  Schedules  filed in paper format shall include a signed original and five
copies of the schedule, including all exhibits.  See Section 240.13d-7 for other
parties to whom copies are to be sent.

* The remainder of this cover page shall be filled out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for  any  subsequent   amendment   containing   information  which  would  alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 ("Act") or otherwise  subject to the liabilities of that section of the Act
but  shall be  subject  to all other  provisions  of the Act  (however,  see the
Notes).




Cusip No.         007779309
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1.  Names of Reporting Persons.  I.R.S. Identification Nos. of above persons
   (entities only):
                       Xmark Asset Management, LLC
                               13-3954392
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2.  Check the Appropriate Box if a Member of a Group (See Instructions):
         (a)                  Not 
         (b)               Applicable
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3.  SEC Use Only
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4.  Source of Funds (See Instructions):  WC
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5.  Check if  Disclosure  of  Legal  Proceedings Is  Required Pursuant  to Items
    2(d) or 2(e):                 Not Applicable
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6.  Citizenship or Place of Organization:  New York, United States
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    Number of                      7. Sole Voting Power:                  *
                                      ------------------------------------------
    Shares Beneficially            8. Shared Voting Power:                *
                                      ------------------------------------------
    Owned by
    Each Reporting                 9. Sole Dispositive Power:             *
                                      ------------------------------------------
    Person With                   10. Shared Dispositive Power:           *
                                      ------------------------------------------
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11. Aggregate Amount Beneficially Owned by Each Reporting Person:   1,186,373*
--------------------------------------------------------------------------------
12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares
    (See Instructions):          Not Applicable
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13. Percent of Class Represented by Amount in Row (11):   19.7%*
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14. Type of Reporting Person (See Instructions):  IA
--------------------------------------------------------------------------------

*   Xmark Asset Management, LLC, a New York limited  liability  company ("XAM"),
serves as investment  manager for each of Xmark Fund,  L.P., a Delaware  limited
partnership  ("Xmark  LP"),  and Xmark Fund,  Ltd.,  a Cayman  Islands  exempted
company  ("Xmark Ltd").  In such  capacity,  XAM possesses the power to vote and
direct the  disposition of all securities  held by Xmark LP and Xmark Ltd. As of
January  25,  2005,  Xmark LP is the holder of (i) 50,337  shares (the "Xmark LP
Preferred") of the Series A-1 Preferred  Stock,  par value $0.001 per share (the
"Preferred  Stock") of Aerogen,  Inc., a Delaware  corporation  (the "Company"),
which are presently  convertible  into 503,370  shares of the  Company's  common
stock, par value $0.001 per share (the "Common  Stock"),  and (ii) 23,560 shares
of Common Stock issued in lieu of the cash payment of quarterly dividends on the
Preferred Stock held by Xmark LP for the quarters ended March 31, 2004, June 30,
2004 and September 30, 2004 (which September 30, 2004 dividends were declared by
the Board of  Directors of the Company but not yet issued as of the date of this
Amendment  No. 1 to  Schedule  13D).  As of January 25,  2005,  Xmark Ltd is the
holder of (i) 62,996  shares (the "Xmark Ltd  Preferred")  of  Preferred  Stock,
which are presently  convertible  into 629,960 shares of Common Stock,  and (ii)
29,483  shares of Common  Stock  issued in lieu of the cash payment of quarterly
dividends on the Preferred  Stock held by Xmark Ltd for the quarters ended March
31,  2004,  June 30,  2004 and  September  30, 2004  (which  September  30, 2004
dividends  were  declared by the Board of  Directors  of the Company but not yet
issued as of the date of this Amendment No. 1 to Schedule 13D). The terms of the
Xmark LP Preferred  and the Xmark Ltd  Preferred  preclude  each of Xmark LP and
Xmark Ltd from  converting the Xmark LP Preferred and the Xmark Ltd Preferred if
the  conversion  thereof  would  result in Xmark  LP,  Xmark  Ltd  and/or  their
affiliates  beneficially owning in excess of 4.99% of the Company's  outstanding
Common Stock  following any such conversion  (the "Issuance  Limitation").  Each
such Issuance  Limitation  is waivable by Xmark LP and Xmark Ltd,  respectively,





providing 61 days' advance  written notice to the Company.  On November 3, 2004,
Xmark LP and Xmark Ltd each provided a written waiver of the Issuance Limitation
to the  Company  with  respect  to the  Xmark LP  Preferred  and the  Xmark  Ltd
Preferred.  As a result  of this  waiver  and as a result  of the fact  that XAM
possesses the sole power to vote and direct the  disposition  of the  securities
described above, for purposes of Reg.  Section  240.13d-3,  XAM may be deemed to
beneficially own 1,186,373 shares of Common Stock, or approximately 19.7% of the
shares of Common Stock deemed issued and outstanding as of January 25, 2005.








Item 2.   Identity and Background.
          -----------------------

          Item 2 of the  Schedule  13D is hereby  amended  and  restated  in its
entirety as follows:

          The person filing this statement is Xmark Asset Management, LLC, a New
York limited  liability  company ("XAM").  XAM's business address is 301 Tresser
Blvd., Suite 1320, Stamford, Connecticut 06901.

          XAM serves as the investment  manager for Xmark Fund, L.P., a Delaware
limited partnership ("Xmark LP") and Xmark Fund, Ltd., a Cayman Islands exempted
company  ("Xmark Ltd").  Xmark LP and Xmark Ltd are engaged in the investment in
personal  property of all kinds,  including  but not  limited to capital  stock,
depository  receipts,   investment  companies,   mutual  funds,   subscriptions,
warrants,  bonds,  notes,  debentures,  options and other securities of whatever
kind and nature.

          Mitchell  D.  Kaye,   whose  business   address  is  c/o  Xmark  Asset
Management, LLC, 301 Tresser Blvd., Suite 1320, Stamford,  Connecticut 06901, is
the sole Manager of XAM.

          Neither of XAM nor Mr. Kaye has ever been  convicted  in any  criminal
proceeding  (excluding  traffic  violations  or similar  misdemeanors),  nor has
either XAM or Mr. Kaye been a party to any civil  proceeding  commenced before a
judicial or administrative  body of competent  jurisdiction as a result of which
XAM or Mr. Kaye,  respectively,  was or is now subject to a judgment,  decree or
final  order  enjoining  future  violations  of,  or  prohibiting  or  mandating
activities subject to, federal or state securities laws or finding any violation
with respect to such laws.

          Mr. Kaye is a citizen of the United States.


Item 5.   Interest in Securities of the Issuer.
          ------------------------------------ 

          Item 5 of the Schedule 13D is hereby amended by adding the following:

          Based on information  reported by the Company in its Form 10-Q for the
fiscal  quarter ended  September 30, 2004 filed with the Securities and Exchange
Commission  on November 15, 2004,  there were  4,884,829  shares of Common Stock
outstanding  as of November 5, 2004.  As of January  25,  2005,  Xmark LP is the
holder of (i)  50,337  shares  (the  "Xmark LP  Preferred")  of the  Series  A-1
Preferred Stock, par value $0.001 per share (the "Preferred  Stock") of Aerogen,
Inc., a Delaware  corporation (the "Company"),  which are presently  convertible
into 503,370  shares of the Company's  common stock,  par value $0.001 per share
(the "Common  Stock"),  and (ii) 23,560 shares of Common Stock issued in lieu of
the cash payment of quarterly  dividends on the Preferred Stock held by Xmark LP
for the quarters  ended March 31,  2004,  June 30, 2004 and  September  30, 2004
(which  September 30, 2004  dividends were declared by the Board of Directors of
the  Company  but  not yet  issued  as of the  date of this  Amendment  No. 1 to
Schedule  13D).  As of January 25,  2005,  Xmark Ltd is the holder of (i) 62,996
shares (the "Xmark Ltd  Preferred")  of  Preferred  Stock,  which are  presently
convertible  into  629,960  shares of Common  Stock,  and (ii) 29,483  shares of
Common Stock  issued in lieu of the cash  payment of quarterly  dividends on the
Preferred  Stock held by Xmark Ltd  for the quarters ended  March 31, 2004, June





30, 2004 and  September  30,  2004 (which  September  30,  2004  dividends  were
declared by the Board of  Directors  of the Company but not yet issued as of the
date of this Amendment No. 1 to Schedule 13D).

          The  terms of the  Xmark LP  Preferred  and the  Xmark  Ltd  Preferred
preclude each of Xmark LP and Xmark Ltd from  converting  the Xmark LP Preferred
and the Xmark Ltd Preferred if the conversion  thereof would result in Xmark LP,
Xmark Ltd and/or their affiliates  beneficially owning in excess of 4.99% of the
Company's  outstanding Common Stock following any such conversion (the "Issuance
Limitation").  Each such  Issuance  Limitation is waivable by Xmark LP and Xmark
Ltd, respectively,  providing 61 days' advance written notice to the Company. On
November 3, 2004,  Xmark LP and Xmark Ltd each provided a written  waiver of the
Issuance  Limitation  to the Company with respect to the Xmark LP Preferred  and
the Xmark Ltd Preferred.  As a result of this waiver and as a result of the fact
that XAM  possesses  the sole power to vote and direct  the  disposition  of the
securities  described above, for purposes of Reg. Section 240.13d-3,  XAM may be
deemed to beneficially  own 1,186,373  shares of Common Stock, or  approximately
19.7% of the shares of Common Stock deemed issued and  outstanding as of January
25, 2005.

          During  the sixty  days  prior to  January  25,  2005,  there  were no
transactions in Common Stock, or securities convertible into, exercisable for or
exchangeable for Common Stock, by XAM or any person or entity  controlled by XAM
or any person or entity for which XAM  possesses  voting or  investment  control
over the  securities  thereof,  except that Xmark LP and Xmark Ltd sold:  (1) on
January 19, 2005, warrants to purchase up to an aggregate of 1,666,660 shares of
the Company's  Common Stock for an aggregate  purchase price of $383,331.80  and
(2) on January 24, 2005,  53,333 shares of the Company's  Preferred Stock for an
aggregate  purchase price of $960,000.00,  in each case, as more fully described
in Item 6 of this Amendment No. 1 to Schedule 13D. On or about January 20, 2005,
XAM was notified  that the Board of  Directors of the Company had declared  that
Xmark LP would receive 15,149 shares of Common Stock and Xmark Ltd would receive
18,958  shares of Common  Stock  from the  Company,  as  payment in lieu of cash
dividends on the Preferred Stock for the quarter ended September 30, 2004.


Item 6.   Contracts, Arrangements, Understandings or  Relationships With Respect
          to Securities of the Issuer.
          ----------------------------------------------------------------------

          Item 6 of the Schedule 13D is hereby amended by adding the following:

          Pursuant to the terms of a Securities Purchase Agreement,  dated as of
January 19, 2005, by and between  Xmark LP and The  Convertible  Fund  Offshore,
Ltd.,  Xmark LP sold warrants to purchase up to 740,250  shares of the Company's
Common Stock at an exercise  price of $3.25 per share for an aggregate  purchase
price of $170,257.50,  or a purchase price per warrant of $0.23. Pursuant to the
terms of a Securities Purchase  Agreement,  dated as of January 19, 2005, by and
between  Xmark  Ltd and The  Convertible  Fund  Offshore,  Ltd.,  Xmark Ltd sold
warrants to purchase up to 926,410  shares of the  Company's  Common Stock at an
exercise  price  of  $3.25  per  share  for  an  aggregate   purchase  price  of
$213,074.30,  or a purchase price per warrant of $0.23. These warrants represent
all of the warrants to purchase the Company's  Common Stock held by Xmark LP and
Xmark Ltd.

          Pursuant to the terms of a Securities Purchase Agreement,  dated as of
January 24, 2005, by and  between Xmark LP and Enable Growth Partners, LP, Xmark
LP sold 23,688  shares of  Preferred  Stock for an aggregate  purchase  price of
$426,382.00,  or a purchase price per share of approximately $18.00. Pursuant to



the terms of a Securities Purchase  Agreement,  dated as of January 24, 2005, by
and between  Xmark Ltd and Enable  Growth  Partners,  LP,  Xmark Ltd sold 29,645
shares of Preferred Stock for an aggregate  purchase price of $533,618.00,  or a
purchase price per share of approximately $18.00.

          The  descriptions of the transactions and agreements set forth in this
Amendment No. 1 to Schedule 13D are qualified in their  entirety by reference to
the complete  agreements  governing  such  matters,  which are  incorporated  by
reference  or  attached  to this  Amendment  No. 1 to  Schedule  13D as exhibits
pursuant to Item 7 hereof.


Item 7.   Material to be Filed as Exhibits.
          --------------------------------

          Item 7 of the Schedule 13D is hereby amended by adding the following:

          5. Securities Purchase Agreement, dated as of January 19, 2005, by and
between Xmark LP and The Convertible Fund Offshore, Ltd.

          6. Securities Purchase Agreement, dated as of January 19, 2005, by and
between Xmark Ltd and The Convertible Fund Offshore, Ltd.

          7. Securities Purchase Agreement, dated as of January 24, 2005, by and
between Xmark LP and Enable Growth Partners, LP.

          8. Securities Purchase Agreement, dated as of January 24, 2005, by and
between Xmark Ltd and Enable Growth Partners, LP.






                                    Signature
                                    ---------

          After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information  set forth in this statement is true,  complete and
correct.


                                            As of January 25, 2005

                                            XMARK ASSET MANAGEMENT, LLC


                                            /s/ Mitchell D. Kaye 
                                            ------------------------------------
                                            Mitchell D. Kaye, Manager


Attention:  Intentional  misstatements  or omissions of fact constitute  Federal
criminal violations (See 18 U.S.C. 1001).







                                                                       Exhibit 5


                          SECURITIES PURCHASE AGREEMENT
                          -----------------------------

     This  SECURITIES  PURCHASE  AGREEMENT,  dated as of January  19, 2005 (this
"Agreement"),  is by and between Xmark Fund, L.P, a Delaware limited partnership
(the "Seller");  and The  Convertible  Fund Offshore,  Ltd., a corporation  duly
organized under the laws of the British Virgin Islands (the "Purchaser")

     WHEREAS,  the Seller own warrants (the "Warrants") to purchase an aggregate
of (i) 339,600  shares (the "March  Warrant  Shares") of Common Stock of Aerogen
Inc. (the "Issuer")  having an exercise price of $3.25 and an expiration date of
March 22, 2009 and (ii) 400,650  shares (the "May  Warrant  Shares" and together
with the March Warrant  Shares,  the "Shares") of Common Stock of Aerogen having
an exercise price of $3.25 and an expiration of May 11, 2009; and

     WHEREAS,  the Seller  wishes to sell the Warrants to the  Purchaser and the
Purchaser is willing to purchase the Warrants from the Seller.

     NOW,  THEREFORE,  in  consideration  of the  foregoing  and the  covenants,
agreements  and  warranties  contained  herein,  the  sufficiency  of  which  as
consideration is hereby acknowledged, the parties agree as follows:

     1.  Definitions.  When used  herein,  the  following  terms  shall have the
indicated meanings:

     "Encumbrance" means any material pledge,  hypothecation,  assignment, lien,
restriction,  charge, claim, security interest, option, preference,  priority or
other preferential arrangement of any kind or nature whatsoever.

     "Transfer  Restriction"  means,  with  respect  to any  security  or  other
property,  any condition to or  restriction on the ability of the holder thereof
to sell,  assign or otherwise  transfer  such  security or other  property or to
enforce the provisions  thereof or of any document related thereto,  whether set
forth in such  security  or other  property  itself or in any  document  related
thereto or arising by  operation of law,  including,  without  limitation,  such
conditions or restrictions  arising under federal,  state or foreign  securities
laws or under contract.

          2.  Sale and Purchase.  (a)  Simultaneously herewith,  the  Seller  is
selling to the Purchaser,  and the Purchaser is purchasing  from the Seller (the
"Transaction"),  the  Warrants for an aggregate  purchase  price (the  "Purchase
Price") of $170,257.50.

     (b) Simultaneously herewith, the Seller is delivering to (i) the Purchaser,
at the  address  set  forth in  Section  7  hereof,  the  Warrants  and (ii) the
Purchaser and the Issuer an Assignment Form (to the extent required by the terms
of the Warrants),  in the form (if any) attached to the Warrants,  duly executed
by an authorized representative of such Seller.

     (c) Simultaneously  herewith, the Purchaser is delivering to the Seller the
Purchase  Price by wire transfer of immediately  available  funds to the account
designed in writing by Seller.

     3. Representations, Warranties and Agreements of the Seller.

     The Seller  hereby  represents,  warrants  and agrees on the date hereof as
follows:

     (a) The Seller has full power and  authority  to enter into this  Agreement
and to  consummate  the  Transaction.  This  Agreement has been duly and validly
executed  and  delivered  by the Seller  and  constitutes  the legal,  valid and





binding  obligation of the Seller,  enforceable  in  accordance  with its terms,
except  as  such  enforceability  may  be  limited  by  applicable   bankruptcy,
insolvency,  moratorium,  reorganization  or  similar  laws from time to time in
effect that  affect  creditors'  rights  generally,  and by legal and  equitable
limitations on the availability of specific remedies.

     (b) The execution, delivery and performance by the Seller of this Agreement
and  consummation  by the  Seller of the  Transaction  do not and will not:  (i)
violate  any decree or  judgment  of any court or other  governmental  authority
applicable  to or binding on the  Seller;  (ii)  violate  any  provision  of any
federal  or  state  statute,  rule  or  regulation  which  is,  to the  Seller's
knowledge,  applicable to the Seller; or (iii) violate any contract to which the
Seller or any of its assets or properties are bound. To the Seller's  knowledge,
no consent or approval of, or filing with, any  governmental  authority or other
person  not  a  party  hereto  is  required  for  the  execution,  delivery  and
performance  by  the  Seller  of  this  Agreement  or  the  consummation  of the
Transaction,  except for such  consents  or  approvals  of the  Issuer  required
pursuant  to the  terms  of the  Warrants  or any of the  transaction  documents
executed in connection with the Seller's acquisition of the Warrants.

     (c) Seller paid full purchase  price for,  became  beneficial  owner of and
acquired  from the Issuer the  Warrants on a date that was at least  thirty (30)
days prior to the date hereof.

     (d) With  respect  to the  Transaction,  (a) the  Seller is the  record and
beneficial owner of the Warrants, free and clear of any Encumbrances, except for
those Encumbrances imposed by securities laws generally;  (b) the Warrants to be
delivered  are not  subject  to any  Transfer  Restriction,  other  than (i) any
restrictions,  if any,  set forth in the terms of the  Warrants or the  purchase
agreement pursuant to which such Warrants were acquired and (ii) the restriction
that the Warrants and the Shares have not been  registered  under the Securities
Act and,  therefore,  cannot  be resold  unless  they are  registered  under the
Securities Act and applicable state securities laws in a transaction exempt from
or not  subject  to the  registration  requirements  of the  Securities  Act and
applicable state securities laws (the "Permitted  Securities Law  Restriction");
and (c) upon the transfer of the Warrants to Purchaser,  Purchaser  will acquire
good and  marketable  title  thereto  (assuming  that  Purchaser  is a bona fide
purchaser within the meaning of Section 8-302 of the New York Uniform Commercial
Code),  and will be the legal and beneficial  owner of such  Warrants,  free and
clear of any  Encumbrances  or Transfer  Restrictions,  other than the Permitted
Securities Law Restriction.

     (e) No proceedings relating to the Warrant are pending or, to the knowledge
of the Seller,  threatened  before any court,  arbitrator or  administrative  or
governmental body that would adversely affect the Seller's right to transfer the
Warrant to the Purchaser.

     (f) The  Seller  has  provided  or made  available  to the  Purchaser  upon
Purchaser's  written  request  a copy  of the  Warrant,  as  well  as any  other
information  and  documents  reasonably  requested  by the  Purchaser,  and such
information  provided to the Purchaser  completely and accurately  describes any
Transfer Restrictions applicable to the Warrant.

     4. Representations, Warranties and Agreement of the Purchaser.

     The Purchaser hereby represents,  warrants and agrees as of the date hereof
as follows:

     (a) The  Purchaser  is  authorized  to do  business  under  the laws of the
British Virgin Islands.

     (b) The Purchaser has full power and authority to enter into this Agreement
and to consummate the  Transaction.  The execution,  delivery and performance of
this  Agreement by the  Purchaser  have been duly  authorized  by all  necessary
corporate proceedings on the part of the Purchaser. This Agreement has been duly
and validly  executed and delivered by the Purchaser and  constitutes the legal,
valid and binding  obligation of the Purchaser,  enforceable in accordance  with
its  terms,   except  as  such  enforceability  may  be  limited  by  applicable
bankruptcy,  insolvency,  moratorium,  reorganization  or similar laws in effect
that affect the  enforcement  of  creditors'  rights  generally and by equitable
limitations on the availability of specific remedies.




     (c) The  execution,  delivery  and  performance  by the  Purchaser  of this
Agreement and  consummation  by the Purchaser of the Transaction do not and will
not:  (i)  violate  any decree or  judgment  of any court or other  governmental
authority applicable to or binding on the Purchaser;  (ii) violate any provision
of any federal or state statute, rule or regulation which is, to the Purchaser's
knowledge,  applicable to the Purchaser; (iii) violate any contract to which the
Purchaser  is a  party  or by  which  the  Purchaser  or any of  its  assets  or
properties  are bound;  or (iv)  violate or conflict  with any  provision of the
charter or by-laws of the Purchaser.  No consent or approval of, or filing with,
any  governmental  authority  or other person not a party hereto is required for
the  execution,  delivery and  performance by the Purchaser of this Agreement or
the consummation of the Transaction.

     (d) The  Purchaser  is an  "accredited  investor"  within  the  meaning  of
Regulation D under the Securities Act. The Purchaser  acknowledges  that (i) the
Warrant  is a  "restricted  security"  for  purposes  of Rule  144 and  (ii) the
Warrants  have not been  registered  under the  Securities  Act and,  therefore,
cannot  be resold  unless  they are  registered  under  the  Securities  Act and
applicable state securities laws or in a transaction  exempt from or not subject
to the  registration  requirements  of the Securities  Act and applicable  state
securities laws.

     (e) The Purchaser is aware of the Issuer's  business  affairs and financial
condition,  and has acquired sufficient information about the Issuer to reach an
informed  and  knowledgeable  decision to acquire the  Warrants.  The  Purchaser
acknowledges  that  neither  the Seller or any of its  agents,  representatives,
officers,  directors,  partners,  members  or  affiliates  thereof  has made any
representations  and  warranties of any nature or kind  concerning the Warrants,
the Shares and/or the Issuer.

     (f) If any  opinion of counsel is required  to be  delivered  to the Issuer
pursuant  to any  Transfer  Restriction  or  otherwise  in  connection  with the
transfer of the Warrants  from Seller to Purchaser,  the  Purchaser  shall cause
such opinion to be provided at its own expense.

     5.  Representation  by  Purchaser  that it is  aware  that  Xmark  may have
Confidential Information

The Purchaser acknowledges, agrees and represents to Seller the following:

     (i)  The Purchaser is aware that Seller and Xmark Fund, Ltd. (collectively,
          the  "Xmark  Funds")  may  be  in  possession  of  certain   nonpublic
          information  concerning  the  Company  and the  Warrants  (the  "Xmark
          Information"),  and that the Xmark  Funds have agreed with the Company
          to keep the Xmark Information confidential. The Purchaser acknowledges
          that a reasonable  investor  could deem that the Xmark  Information is
          material to an  investment  decision,  and that the Xmark  Information
          could be of an adverse  nature to an  investor  in the  Warrants.  The
          Purchaser  is  freely   deciding  to  purchase  the  Warrants  at  the
          agreed-upon  price for its own  reasons  based on the  information  it
          currently possesses,  which it deems sufficient,  notwithstanding that
          it may lack access to the Xmark  Information,  to make its decision to
          participate  in the purchase and sale of the  Warrants.  The Purchaser
          does not and will not request,  desire or require  either of the Xmark
          Funds,  now or in the  future,  to  disclose  any or all of the  Xmark
          Information  to the  Purchaser  or any of its  affiliates,  agents  or
          representatives.

     (ii) The Purchaser is a  sophisticated  investor and has such knowledge and
          experience  in  financial  and  business  matters  as to be capable of
          evaluating  the merits and risks of its purchase of and  investment in
          the  Warrants.  The  Purchaser  is  aware  that an  investment  in the
          Warrants  involves a high  degree of risk and that the  Purchaser  may
          lose  the  entire  amount  of  its  investment  in the  Warrants.  The
          Purchaser is able to bear the economic  risk of its  investment in the
          Warrants and can afford the complete loss of such investment.





     6. Purchaser Release and Waiver

The Purchaser  agrees not to pursue and to release  fully any  potential  suits,
claims, causes of action, remedies, damages and other actions whatsoever, at law
or in equity,  against any of the Xmark Funds and their  respective  affiliates,
officers, directors, agents, employees, representatives and assigns, arising out
of the purchase of the Warrants or the nondisclosure of the Xmark Information to
the  Purchaser.  The  Purchaser  hereby  acknowledges  receipt  of  satisfactory
consideration for the agreements set forth in this paragraph,  including but not
limited to the  consummation  of the  purchase  and sale of the  Warrants at the
agreed-upon purchase price. The Purchase  acknowledges and agrees that Seller is
relying on this Section 6 in engaging in the sale  herein,  and would not engage
in the sale of the Warrants in the absence of this Section 6.

     7. Further Assurances.  Each of the Purchaser and the Seller will, upon the
reasonable  request of the other,  execute and deliver all other such  documents
and instruments  reasonably  deemed necessary or desirable by the other party to
fully effect the purchase and sale contemplated hereby.

     8. Amendment.  This Agreement may be amended,  modified or supplemented but
only in a writing signed by the Seller and the Purchaser.

     9. Notices. Any notice, request,  instruction or other document to be given
hereunder  by a party  hereto  (other than the  Warrants to be  delivered by the
Seller to the  Purchaser  pursuant  to Section 2, which  shall be  delivered  as
described  therein)  shall be in writing and shall be deemed to have been given,
(a) when received if given in person or by a courier or a courier service or (b)
on the date of transmission if sent by facsimile transmission:

               (a)   If to the Seller, addressed as follows:

                     Xmark Asset Management, LLC
                     152 West 57th Street, 21st Floor
                     New York, NY 10019
                     Attn: Mitchell Kaye
                     Facsimile: 212-247-1329

               (b)   If to the Purchaser, addressed as follows:

                     The Convertible Fund Offshore Ltd.
                     165 Beacon Lane
                     Jupiter, Florida 33469
                     Facsimile: 203-286-1728

or to such other person or address as a party hereto may designate for itself by
notice given as herein provided.

     10.  Counterparts.  This  Agreement  may  be  executed  in  any  number  of
counterparts  (including  by  facsimile  transmission),  each of which  shall be
deemed an original,  but all of which together shall constitute one and the same
agreement.

     11.  APPLICABLE  LAW. THIS AGREEMENT  SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE  WITH THE LAWS OF THE STATE OF NEW YORK (without  reference to choice
OF law doctrine).

     12.  Expenses.  Except as otherwise  expressly  provided herein, each party
hereto will bear its own expenses in connection with the purchase(s) and sale(s)
of the  Warrants  contemplated  hereby,  except  that the Seller  shall bear all
transfer and issuance taxes imposed on such purchase and sale.





     13. Entire  Agreement.  This  Agreement  constitutes  the entire  agreement
between  the  parties  hereto  with  respect to the  subject  matter  hereof and
supersedes  all prior  agreements and  understandings  between such parties with
respect to such subject matter.

     14. Severability. If any provision of this Agreement shall be held invalid,
illegal or unenforceable, the validity, legality and enforceability of the other
provisions hereof shall not be affected thereby.

     15. Captions.  The Section captions herein are for convenience of reference
only  and  are  not  intended  to be a  part  of or to  affect  the  meaning  or
interpretation of this Agreement.

     16. Specific  Performance.  The parties acknowledge that money damages will
not be a  sufficient  remedy for breach of this  Agreement  and that the parties
hereto may obtain specific  performance or other injunctive relief,  without the
necessity of posting a bond or security therefor.


                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]








     IN WITNESS  WHEREOF,  the parties  hereto have caused this  Agreement to be
executed and delivered as of the date first above written.


THE CONVERTIBLE FUND OFFSHORE LTD.


By: /s/ Steve Seefeld
Name  Steve Seefeld
Title


XMARK FUND, L.P.



By: /s/ Mitchell D. Kaye
Name: Mitchell D. Kaye
Title: Chief Investment Officer








                                                                       Exhibit 6


                          SECURITIES PURCHASE AGREEMENT


     This  SECURITIES  PURCHASE  AGREEMENT,  dated as of January  19, 2005 (this
"Agreement"),  is by and between  Xmark Fund,  Ltd.,  an exempted  Company  (the
"Seller"); and The Convertible Fund Offshore, Ltd., a corporation duly organized
under the laws of the British Virgin Islands (the "Purchaser")

     WHEREAS,  the Seller own  warrants  (the  "Warrants")  to  purchase  (i) an
aggregate  of 425,010  shares (the " March  Warrant  Shares") of Common Stock of
Aerogen Inc. (the "Issuer")  having an exercise price of $3.25 and an expiration
date of March 22, 2009 and (ii)  501,400  shares (the "May  Warrant  Shares" and
together with the March Warrant Shares, the "Shares") of Common Stock of Aerogen
having an exercise price of $3.25 and an expiration of May 11, 2009; and

     WHEREAS,  the Seller  wishes to sell the Warrants to the  Purchaser and the
Purchaser is willing to purchase the Warrants from the Seller.

     NOW,  THEREFORE,  in  consideration  of the  foregoing  and the  covenants,
agreements  and  warranties  contained  herein,  the  sufficiency  of  which  as
consideration is hereby acknowledged, the parties agree as follows:

     1.  Definitions.  When used  herein,  the  following  terms  shall have the
indicated meanings:

     "Encumbrance" means any material pledge,  hypothecation,  assignment, lien,
restriction,  charge, claim, security interest, option, preference,  priority or
other preferential arrangement of any kind or nature whatsoever.

     "Transfer  Restriction"  means,  with  respect  to any  security  or  other
property,  any condition to or  restriction on the ability of the holder thereof
to sell,  assign or otherwise  transfer  such  security or other  property or to
enforce the provisions  thereof or of any document related thereto,  whether set
forth in such  security  or other  property  itself or in any  document  related
thereto or arising by  operation of law,  including,  without  limitation,  such
conditions or restrictions  arising under federal,  state or foreign  securities
laws or under contract.

     2. Sale and Purchase. (a) Simultaneously herewith, the Seller is selling to
the   Purchaser,   and  the  Purchaser  is  purchasing   from  the  Seller  (the
"Transaction"),  the  Warrants for an aggregate  purchase  price (the  "Purchase
Price") of $213,074.30.

     (b) Simultaneously herewith, the Seller is delivering to (i) the Purchaser,
at the  address  set  forth in  Section  7  hereof,  the  Warrants  and (ii) the
Purchaser and the Issuer an Assignment Form (to the extent required by the terms
of the Warrants),  in the form (if any) attached to the Warrants,  duly executed
by an authorized representative of such Seller.

     (c) Simultaneously  herewith, the Purchaser is delivering to the Seller the
Purchase  Price by wire transfer of immediately  available  funds to the account
designed in writing by Seller.

     3. Representations, Warranties and Agreements of the Seller.

     The Seller  hereby  represents,  warrants  and agrees on the date hereof as
follows:

     (a) The Seller has full power and  authority  to enter into this  Agreement
and to  consummate  the  Transaction.  This  Agreement has been duly and validly
executed  and  delivered  by the Seller  and  constitutes  the legal,  valid and
binding  obligation of the Seller,  enforceable  in  accordance  with its terms,
except  as  such  enforceability  may  be  limited  by  applicable   bankruptcy,





insolvency,  moratorium,  reorganization  or  similar  laws from time to time in
effect that  affect  creditors'  rights  generally,  and by legal and  equitable
limitations on the availability of specific remedies.

     (b) The execution, delivery and performance by the Seller of this Agreement
and  consummation  by the  Seller of the  Transaction  do not and will not:  (i)
violate  any decree or  judgment  of any court or other  governmental  authority
applicable  to or binding on the  Seller;  (ii)  violate  any  provision  of any
federal  or  state  statute,  rule  or  regulation  which  is,  to the  Seller's
knowledge,  applicable to the Seller; or (iii) violate any contract to which the
Seller or any of its assets or properties are bound. To the Seller's  knowledge,
no consent or approval of, or filing with, any  governmental  authority or other
person  not  a  party  hereto  is  required  for  the  execution,  delivery  and
performance  by  the  Seller  of  this  Agreement  or  the  consummation  of the
Transaction,  except for such  consents  or  approvals  of the  Issuer  required
pursuant  to the  terms  of the  Warrants  or any of the  transaction  documents
executed in connection with the Seller's acquisition of the Warrants.

     (c) Seller paid full purchase  price for,  became  beneficial  owner of and
acquired  from the Issuer the  Warrants on a date that was at least  thirty (30)
days prior to the date hereof.

     (d) With  respect  to the  Transaction,  (a) the  Seller is the  record and
beneficial owner of the Warrants, free and clear of any Encumbrances, except for
those Encumbrances imposed by securities laws generally;  (b) the Warrants to be
delivered  are not  subject  to any  Transfer  Restriction,  other  than (i) any
restrictions,  if any,  set forth in the terms of the  Warrants or the  purchase
agreement pursuant to which such Warrants were acquired and (ii) the restriction
that the Warrants and the Shares have not been  registered  under the Securities
Act and,  therefore,  cannot  be resold  unless  they are  registered  under the
Securities Act and applicable state securities laws in a transaction exempt from
or not  subject  to the  registration  requirements  of the  Securities  Act and
applicable state securities laws (the "Permitted  Securities Law  Restriction");
and (c) upon the transfer of the Warrants to Purchaser,  Purchaser  will acquire
good and  marketable  title  thereto  (assuming  that  Purchaser  is a bona fide
purchaser within the meaning of Section 8-302 of the New York Uniform Commercial
Code),  and will be the legal and beneficial  owner of such  Warrants,  free and
clear of any  Encumbrances  or Transfer  Restrictions,  other than the Permitted
Securities Law Restriction.

     (e) No proceedings relating to the Warrant are pending or, to the knowledge
of the Seller,  threatened  before any court,  arbitrator or  administrative  or
governmental body that would adversely affect the Seller's right to transfer the
Warrant to the Purchaser.

     (f) The  Seller  has  provided  or made  available  to the  Purchaser  upon
Purchaser's  written  request  a copy  of the  Warrant,  as  well  as any  other
information  and  documents  reasonably  requested  by the  Purchaser,  and such
information  provided to the Purchaser  completely and accurately  describes any
Transfer Restrictions applicable to the Warrant.


     4. Representations, Warranties and Agreement of the Purchaser.

     The Purchaser hereby represents,  warrants and agrees as of the date hereof
as follows:

     (a) The  Purchaser  is  authorized  to do  business  under  the laws of the
British Virgin Islands.

     (b) The Purchaser has full power and authority to enter into this Agreement
and to consummate the  Transaction.  The execution,  delivery and performance of
this  Agreement by the  Purchaser  have been duly  authorized  by all  necessary
corporate proceedings on the part of the Purchaser. This Agreement has been duly
and validly  executed and delivered by the Purchaser and  constitutes the legal,
valid and binding  obligation of the Purchaser,  enforceable in accordance  with
its  terms,   except  as  such  enforceability  may  be  limited  by  applicable
bankruptcy,  insolvency,  moratorium,  reorganization  or similar laws in effect
that affect the  enforcement  of  creditors'  rights  generally and by equitable
limitations on the availability of specific remedies.





     (c) The  execution,  delivery  and  performance  by the  Purchaser  of this
Agreement and  consummation  by the Purchaser of the Transaction do not and will
not:  (i)  violate  any decree or  judgment  of any court or other  governmental
authority applicable to or binding on the Purchaser;  (ii) violate any provision
of any federal or state statute, rule or regulation which is, to the Purchaser's
knowledge,  applicable to the Purchaser; (iii) violate any contract to which the
Purchaser  is a  party  or by  which  the  Purchaser  or any of  its  assets  or
properties  are bound;  or (iv)  violate or conflict  with any  provision of the
charter or by-laws of the Purchaser.  No consent or approval of, or filing with,
any  governmental  authority  or other person not a party hereto is required for
the  execution,  delivery and  performance by the Purchaser of this Agreement or
the consummation of the Transaction.

     (d) The  Purchaser  is an  "accredited  investor"  within  the  meaning  of
Regulation D under the Securities Act. The Purchaser  acknowledges  that (i) the
Warrant  is a  "restricted  security"  for  purposes  of Rule  144 and  (ii) the
Warrants  have not been  registered  under the  Securities  Act and,  therefore,
cannot  be resold  unless  they are  registered  under  the  Securities  Act and
applicable state securities laws or in a transaction  exempt from or not subject
to the  registration  requirements  of the Securities  Act and applicable  state
securities laws.

     (e) The Purchaser is aware of the Issuer's  business  affairs and financial
condition,  and has acquired sufficient information about the Issuer to reach an
informed  and  knowledgeable  decision to acquire the  Warrants.  The  Purchaser
acknowledges  that  neither  the Seller or any of its  agents,  representatives,
officers,  directors,  partners,  members  or  affiliates  thereof  has made any
representations  and  warranties of any nature or kind  concerning the Warrants,
the Shares and/or the Issuer.

     (f) If any  opinion of counsel is required  to be  delivered  to the Issuer
pursuant  to any  Transfer  Restriction  or  otherwise  in  connection  with the
transfer of the Warrants  from Seller to Purchaser,  the  Purchaser  shall cause
such opinion to be provided at its own expense.

     5.  Representation  by  Purchaser  that it is  aware  that  Xmark  may have
Confidential Information

The Purchaser acknowledges, agrees and represents to Seller the following:

     (i)  The Purchaser is aware that Seller and Xmark Fund, L.P. (collectively,
          the  "Xmark  Funds")  may  be  in  possession  of  certain   nonpublic
          information  concerning  the  Company  and the  Warrants  (the  "Xmark
          Information"),  and that the Xmark  Funds have agreed with the Company
          to keep the Xmark Information confidential. The Purchaser acknowledges
          that a reasonable  investor  could deem that the Xmark  Information is
          material to an  investment  decision,  and that the Xmark  Information
          could be of an adverse  nature to an  investor  in the  Warrants.  The
          Purchaser  is  freely   deciding  to  purchase  the  Warrants  at  the
          agreed-upon  price for its own  reasons  based on the  information  it
          currently possesses,  which it deems sufficient,  notwithstanding that
          it may lack access to the Xmark  Information,  to make its decision to
          participate  in the purchase and sale of the  Warrants.  The Purchaser
          does not and will not request,  desire or require  either of the Xmark
          Funds,  now or in the  future,  to  disclose  any or all of the  Xmark
          Information  to the  Purchaser  or any of its  affiliates,  agents  or
          representatives.

     (ii) The Purchaser is a  sophisticated  investor and has such knowledge and
          experience  in  financial  and  business  matters  as to be capable of
          evaluating  the merits and risks of its purchase of and  investment in
          the  Warrants.  The  Purchaser  is  aware  that an  investment  in the
          Warrants  involves a high  degree of risk and that the  Purchaser  may
          lose  the  entire  amount  of  its  investment  in the  Warrants.  The
          Purchaser is able to bear the economic  risk of its  investment in the
          Warrants and can afford the complete loss of such investment.





     6. Purchaser Release and Waiver

The Purchaser  agrees not to pursue and to release  fully any  potential  suits,
claims, causes of action, remedies, damages and other actions whatsoever, at law
or in equity,  against any of the Xmark Funds and their  respective  affiliates,
officers, directors, agents, employees, representatives and assigns, arising out
of the purchase of the Warrants or the nondisclosure of the Xmark Information to
the  Purchaser.  The  Purchaser  hereby  acknowledges  receipt  of  satisfactory
consideration for the agreements set forth in this paragraph,  including but not
limited to the  consummation  of the  purchase  and sale of the  Warrants at the
agreed-upon purchase price. The Purchase  acknowledges and agrees that Seller is
relying on this Section 6 in engaging in the sale  herein,  and would not engage
in the sale of the Warrants in the absence of this Section 6.

     7. Further Assurances.  Each of the Purchaser and the Seller will, upon the
reasonable  request of the other,  execute and deliver all other such  documents
and instruments  reasonably  deemed necessary or desirable by the other party to
fully effect the purchase and sale contemplated hereby.

     8. Amendment.  This Agreement may be amended,  modified or supplemented but
only in a writing signed by the Seller and the Purchaser.

     9. Notices. Any notice, request,  instruction or other document to be given
hereunder  by a party  hereto  (other than the  Warrants to be  delivered by the
Seller to the  Purchaser  pursuant  to Section 2, which  shall be  delivered  as
described  therein)  shall be in writing and shall be deemed to have been given,
(a) when received if given in person or by a courier or a courier service or (b)
on the date of transmission if sent by facsimile transmission:

               (a)   If to the Seller, addressed as follows:

                     Xmark Asset Management, LLC
                     152 West 57th Street, 21st Floor
                     New York, NY 10019
                     Attn: Mitchell Kaye
                     Facsimile: 212-247-1329

               (b)   If to the Purchaser, addressed as follows:

                     The Convertible Fund Offshore Ltd.
                     165 Beacon Lane
                     Jupiter, Florida 33469
                     Facsimile: 203-286-1728

or to such other person or address as a party hereto may designate for itself by
notice given as herein provided.

     10.  Counterparts.  This  Agreement  may  be  executed  in  any  number  of
counterparts  (including  by  facsimile  transmission),  each of which  shall be
deemed an original,  but all of which together shall constitute one and the same
agreement.

     11.  APPLICABLE  LAW. THIS AGREEMENT  SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE  WITH THE LAWS OF THE STATE OF NEW YORK (without  reference to choice
OF law doctrine).

     12. Expenses.  Except as otherwise  expressly  provided herein,  each party
hereto will bear its own expenses in connection with the purchase(s) and sale(s)
of the  Warrants  contemplated  hereby,  except  that the Seller  shall bear all
transfer and issuance taxes imposed on such purchase and sale.

     13. Entire  Agreement.  This  Agreement  constitutes  the entire  agreement
between  the  parties  hereto  with  respect to the  subject  matter  hereof and
supersedes  all prior  agreements and  understandings  between such parties with
respect to such subject matter.





     14. Severability. If any provision of this Agreement shall be held invalid,
illegal or unenforceable, the validity, legality and enforceability of the other
provisions hereof shall not be affected thereby.

     15. Captions.  The Section captions herein are for convenience of reference
only  and  are  not  intended  to be a  part  of or to  affect  the  meaning  or
interpretation of this Agreement.

     16. Specific  Performance.  The parties acknowledge that money damages will
not be a  sufficient  remedy for breach of this  Agreement  and that the parties
hereto may obtain specific  performance or other injunctive relief,  without the
necessity of posting a bond or security therefor.


                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]






     IN WITNESS  WHEREOF,  the parties  hereto have caused this  Agreement to be
executed and delivered as of the date first above written.


THE CONVERTIBLE FUND OFFSHORE LTD.


By: /s/ Steve Seefeld
Name  Steve Seefeld
Title


XMARK FUND, LTD.



By: /s/ Mitchell D. Kaye
Name: Mitchell D. Kaye
Title: Chief Investment Officer








                                                                       Exhibit 7


                          SECURITIES PURCHASE AGREEMENT

     This  SECURITIES  PURCHASE  AGREEMENT,  dated as of January  24, 2005 (this
"Agreement"),  is by and between Enable Growth Partners,  L.P., a ______ limited
partnership  (the  "Purchaser"),  and  Xmark  Fund,  L.P.,  a  Delaware  limited
partnership (the "Seller").

     WHEREAS, the Seller owns 74,025 shares of Series A-1 Convertible  Preferred
Stock (the "Preferred Stock") of AeroGen Inc. (the "Issuer"); and

     WHEREAS,   the  Issuer  has  granted   Seller  certain   registration   and
indemnification  rights in  connection  with the  registration  of the shares of
Common Stock underlying the Preferred Stock owned by Seller (the "Rights"); and

     WHEREAS,  the Seller wishes to sell 23,688 shares (the "Preferred  Shares")
of the Preferred  Stock,  and assign the Rights  associated  with such Preferred
Shares,  to the Purchaser and the Purchaser is willing to purchase the Preferred
Shares from the Seller, and take the associated Rights by assignment.

     NOW,  THEREFORE,  in  consideration  of the  foregoing  and the  covenants,
agreements  and  warranties  contained  herein,  the  sufficiency  of  which  as
consideration is hereby acknowledged, the parties agree as follows:

     1.  Definitions.  When used  herein,  the  following  terms  shall have the
indicated meanings:

     "Encumbrance"   means  any   pledge,   hypothecation,   assignment,   lien,
restriction,  charge, claim, security interest, option, preference,  priority or
other preferential arrangement of any kind or nature whatsoever.

     "Transfer  Restriction"  means,  with  respect  to any  security  or  other
property,  any condition to or  restriction on the ability of the holder thereof
to sell,  assign or otherwise  transfer  such  security or other  property or to
enforce the provisions  thereof or of any document related thereto,  whether set
forth in such  security  or other  property  itself or in any  document  related
thereto or arising by  operation of law,  including,  without  limitation,  such
conditions or restrictions  arising under federal,  state or foreign  securities
laws or under contract.

     2. Sale and Purchase.

     (a) Simultaneously  herewith,  the Seller is selling to the Purchaser,  and
the Purchaser is purchasing from the Seller (the  "Transaction"),  the Preferred
Shares for an aggregate  purchase price (the "Purchase Price") of $426,336.00 in
cash.

     (b) Simultaneously  herewith, the Seller is delivering to the Purchaser, at
the address set forth in Section 8 hereof, the Preferred Shares, duly endorsed.

     (c) Simultaneously  herewith, the Purchaser is delivering to the Seller the
Purchase  Price by wire transfer of immediately  available  funds to the account
designed in writing by the Seller.

     3. Representations, Warranties and Agreements of the Seller.

     The Seller hereby  represents,  warrants and agrees on the date hereof,  as
follows:

     (a) The Seller has full power and  authority  to enter into this  Agreement
and to  consummate  the  Transaction.  This  Agreement has been duly and validly
executed  and  delivered  by the Seller  and  constitutes  the legal,  valid and
binding  obligation of the Seller,  enforceable  in  accordance  with its terms,
except  as  such  enforceability  may  be  limited  by  applicable   bankruptcy,
insolvency,  moratorium,  reorganization  or  similar  laws from time to time in
effect that  affect  creditors'  rights  generally,  and by legal and  equitable
limitations on the availability of specific remedies.





     (b) The execution, delivery and performance by the Seller of this Agreement
and  consummation  by the  Seller of the  Transaction  do not and will not:  (i)
violate  any decree or  judgment  of any court or other  governmental  authority
applicable  to or binding on the  Seller;  (ii)  violate  any  provision  of any
federal  or  state  statute,  rule  or  regulation  which  is,  to the  Seller's
knowledge,  applicable to the Seller; or (iii) violate any contract to which the
Seller or any of its assets or properties are bound. To the Seller's  knowledge,
no consent or approval of, or filing with, any  governmental  authority or other
person  not  a  party  hereto  is  required  for  the  execution,  delivery  and
performance  by  the  Seller  of  this  Agreement  or  the  consummation  of the
Transaction,  except for such  consents  or  approvals  of the  Issuer  required
pursuant  to  the  terms  of the  Preferred  Shares  or  any of the  transaction
documents executed in connection with the Seller's  acquisition of the Preferred
Shares.

     (c) Seller paid full purchase price for,  became  beneficial  owner of, and
acquired from the Issuer the Preferred Shares on a date that was at least thirty
(30) days prior to the date hereof.

     (d) With  respect  to the  Transaction,  (a) the  Seller is the  record and
beneficial owner of the Preferred  Shares,  free and clear of any  Encumbrances,
except for those  Encumbrances  imposed by securities  laws  generally;  (b) the
Preferred  Shares to be delivered  are not subject to any Transfer  Restriction,
other than (i) any restrictions, if any, set forth in the terms of the Preferred
Shares or the purchase  agreement  pursuant to which such Preferred  Shares were
acquired and (ii) the  restriction  that the Preferred  Shares and the shares of
the  Issuer's  common  stock  underlying  the  Preferred  Shares  have  not been
registered under the Securities Act and, therefore, cannot be resold unless they
are registered  under the Securities Act and applicable state securities laws in
a transaction exempt from or not subject to the registration requirements of the
Securities Act and applicable state  securities laws (the "Permitted  Securities
Law  Restriction");  and (c)  upon  the  transfer  of the  Preferred  Shares  to
Purchaser,  Purchaser will acquire good and marketable  title thereto  (assuming
that Purchaser is a bona fide  purchaser  within the meaning of Section 8-302 of
the New York  Uniform  Commercial  Code),  and will be the legal and  beneficial
owner of such Preferred  Shares,  free and clear of any Encumbrances or Transfer
Restrictions, other than the Permitted Securities Law Restriction.

     (e) No proceedings  relating to the Preferred Shares are pending or, to the
knowledge  of  the  Seller,   threatened   before  any  court,   arbitrator   or
administrative  or governmental  body that would  adversely  affect the Seller's
right to transfer the Preferred Shares to the Purchaser.

     (f) The  Seller  has  provided  or made  available  to the  Purchaser  upon
Purchaser's written request a copy of the Preferred Shares, as well as any other
information  and  documents  reasonably  requested  by the  Purchaser,  and such
information  provided to the Purchaser  completely and accurately  describes any
Transfer Restrictions applicable to the Preferred Shares.

     4. Representations, Warranties and Agreement of the Purchaser.

     The Purchaser hereby represents, warrants and agrees as of the date hereof,
as follows:

     (a) The Purchaser is duly organized,  validly existing and in good standing
in its jurisdiction of organization.

     (b) The Purchaser has full power and authority to enter into this Agreement
and to consummate the  Transaction.  The execution,  delivery and performance of
this  Agreement by the  Purchaser  have been duly  authorized  by all  necessary
corporate/company/partnership  proceedings  on the part of the  Purchaser.  This
Agreement has been duly and validly  executed and delivered by the Purchaser and
constitutes  the  legal,   valid  and  binding   obligation  of  the  Purchaser,
enforceable in accordance with its terms,  except as such  enforceability may be
limited by applicable  bankruptcy,  insolvency,  moratorium,  reorganization  or
similar  laws in  effect  that  affect  the  enforcement  of  creditors'  rights
generally and by equitable limitations on the availability of specific remedies.

     (c) The  execution,  delivery  and  performance  by the  Purchaser  of this
Agreement and  consummation  by the Purchaser of the Transaction do not and will
not:  (i)  violate  any decree or  judgment  of any court or other  governmental
authority applicable to or binding on the Purchaser;  (ii) violate any provision
of any federal or state statute, rule or regulation which is, to the Purchaser's





knowledge,  applicable to the Purchaser; (iii) violate any contract to which the
Purchaser  is a  party  or by  which  the  Purchaser  or any of  its  assets  or
properties  are bound;  or (iv)  violate or conflict  with any  provision of the
charter or by-laws of the Purchaser.  No consent or approval of, or filing with,
any  governmental  authority  or other person not a party hereto is required for
the  execution,  delivery and  performance by the Purchaser of this Agreement or
the consummation of the Transaction.

     (d) The  Purchaser  is an  "accredited  investor"  within  the  meaning  of
Regulation D under the Securities  Act. The Purchaser is acquiring the Preferred
Shares pursuant to the Transaction  hereunder for its own account and not with a
view to the  distribution  thereof (within the meaning of the Securities Act) in
violation of applicable  securities laws.  Purchaser has no present intention of
selling,  granting any participation in, or otherwise distributing the Preferred
Shares.  The acquisition by Purchaser of the Preferred  Shares shall  constitute
confirmation of the representation by the Purchaser that Purchaser does not have
any contract,  undertaking,  agreement or  arrangement  with any person to sell,
transfer or grant  participations  to such person or to any third  person,  with
respect to the Preferred Shares. The Purchaser acknowledges that (i) each of the
Preferred  Shares is a  "restricted  security" for purposes of Rule 144 and (ii)
the Preferred  Shares,  and the shares of the Issuer's  common stock  underlying
such Preferred  Shares,  have not been registered  under the Securities Act and,
therefore,  cannot be resold unless they are registered under the Securities Act
or in a transaction exempt from or not subject to the registration  requirements
of the Securities Act.

     (e) The Purchaser is aware of the Issuer's  business  affairs and financial
condition,  and has acquired sufficient information about the Issuer to reach an
informed and knowledgeable decision to acquire the Preferred Shares.

     (f) The  Purchaser  is aware that the Seller,  Xmark Fund,  Ltd.  and Xmark
Asset Management, LLC (collectively,  the "Xmark Funds") may be in possession of
certain  nonpublic  information  concerning the Company and the Preferred Shares
(the "Xmark Information"), and that the Xmark Funds have agreed with the Company
to keep the Xmark Information  confidential.  The Purchaser  acknowledges that a
reasonable  investor  could deem that the Xmark  Information  is  material to an
investment  decision,  and that the  Xmark  Information  could be of an  adverse
nature to an investor in the Preferred Shares.  The Purchaser is freely deciding
to purchase the Preferred  Shares at the  agreed-upon  price for its own reasons
based on the  information  it currently  possesses,  which it deems  sufficient,
notwithstanding  that it may lack access to the Xmark  Information,  to make its
decision to  participate in the purchase and sale of the Preferred  Shares.  The
Purchaser  does not and will not  request,  desire or  require  any of the Xmark
Funds, now or in the future,  to disclose any or all of the Xmark Information to
the Purchaser or any of its affiliates, agents or representatives.

     (g) The Purchaser is a  sophisticated  investor and has such  knowledge and
experience in financial and business  matters as to be capable of evaluating the
merits and risks of its purchase of and investment in the Preferred Shares.  The
Purchaser is aware that an investment in the  Preferred  Shares  involves a high
degree  of risk and that  the  Purchaser  may  lose  the  entire  amount  of its
investment in the Preferred  Shares.  The Purchaser is able to bear the economic
risk of its investment in the Preferred  Shares and can afford the complete loss
of such investment.

     5. Purchaser Release and Waiver.  The Purchaser agrees not to pursue and to
release fully any potential suits, claims, causes of action,  remedies,  damages
and other  actions  whatsoever,  at law or in equity,  against  any of the Xmark
Funds and their respective affiliates,  officers,  directors, agents, employees,
representatives and assigns, arising out of the Transaction or the nondisclosure
of the Xmark  Information to the Purchaser.  The Purchaser  hereby  acknowledges
receipt  of  satisfactory  consideration  for the  agreements  set forth in this
paragraph,  including  but not limited to the  consummation  of the purchase and
sale of the Preferred  Shares at the agreed-upon  purchase price.  The Purchaser
acknowledges  and agrees that Seller is relying on this Section 5 in engaging in
the sale herein, and would not engage in the sale of the Preferred Shares in the
absence of this Section 5.

     6. Conditions Precedent to Obligations of the Purchaser. The obligations of
the  Purchaser  are  subject to the  satisfaction  of the  following  conditions
precedent:

     (a) The representations and warranties of the Seller contained herein shall
be true and correct as of the date hereof.





     (b) The Seller shall have complied with all of its covenants and agreements
contained herein to be performed by it on or prior to the date hereof.

     7.  Conditions  Precedent to Obligations of the Seller.  The obligations of
the  Seller  are  subject  to  the  satisfaction  of  the  following  conditions
precedent:

     (a) The  representations  and warranties of the Purchaser  contained herein
shall be true and correct as of the date hereof.

     (b) The  Purchaser  shall  have  complied  with  all of its  covenants  and
agreements  contained  herein  to be  performed  by it on or  prior  to the date
hereof.

     (c) The Seller shall have received the wire transfer referred to in Section
8(c).

     8. Settlement.

     (a) Settlement of the Transaction  shall take place on the date agreed upon
by the  parties but in no event  later than  January  25, 2005 (the  "Settlement
Date").  On the Settlement Date,  subject to Sections 6 and 7 of this Agreement,
the Seller shall deliver to the Purchaser the Preferred  Shares against  payment
by the Purchaser of the Purchase  Price.  The purchase and sale of the Preferred
Shares and the assignment of all Rights,  privileges,  benefits and other rights
associated therewith,  including without limitation rights to dividends that are
declared and payable on and after (but excluding dividends payable prior to) the
Settlement Date, shall be effective as of the Settlement Date.


     (b) The  Preferred  Shares  delivered  to the  Purchaser  pursuant  to this
Agreement shall be free and clear of all Encumbrances and Transfer  Restrictions
other  than the  Permitted  Securities  Law  Restriction.  The  transfer  of the
Preferred Shares to the Purchaser shall have been registered on the books of the
Issuer and/or any applicable transfer agent. Unless otherwise  instructed by the
Purchaser, the Preferred Shares should be delivered to:

     (c) The  Purchase  Price  shall  be paid by wire  transfer  of  immediately
available funds to the following bank account:

         Chase Manhattan Bank
         ABA #:   021-000-021
         FBO:          Citigroup - Smith Barney Inc
         A/C#:         066-198038
         FFC:          Xmark Fund, L.P.
         A/C#:         232-47100-17-265

     (d) Each of the Purchaser and the Seller will, upon the reasonable  request
of the other,  execute  and  deliver all other such  documents  and  instruments
reasonably  deemed necessary or desirable by the other party to fully effect the
purchases and sales contemplated hereby.

     9. Amendment.  This Agreement may be amended,  modified or supplemented but
only in a writing signed by the Seller and the Purchaser.

     10. Notices. Any notice, request, instruction or other document to be given
hereunder  by a party  hereto  (other than the  documents to be delivered by the
Seller to the  Purchaser  pursuant  to Section 7, which  shall be  delivered  as
described  therein)  shall be in writing and shall be deemed to have been given,
(a) when received if given in person or by a courier or a courier service or (b)
on the date of transmission if sent by facsimile transmission:





               (a)   If to the Seller, addressed as follows:

                     Xmark Funds
                     301 Tresser Boulevard, Suite 1320
                     Stamford, CT 06901
                     Attn:  Mitchell Kaye
                     T: 203-653-2500
                     F: 203-653-2501

               (b)   If to the Purchaser, addressed as follows:

                     [PLEASE PROVIDE]

or to such other person or address as a party hereto may designate for itself by
notice given as herein provided.

     11.  Counterparts.  This  Agreement  may  be  executed  in  any  number  of
counterparts  (including  by  facsimile  transmission),  each of which  shall be
deemed an original,  but all of which together shall constitute one and the same
agreement.

     12.  APPLICABLE  LAW. THIS AGREEMENT  SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE  WITH THE LAWS OF THE STATE OF NEW YORK (without  reference to choice
OF law doctrine).

     13. Expenses.  Except as otherwise  expressly  provided herein,  each party
hereto will bear its own expenses in connection with the purchase(s) and sale(s)
of the  Warrant  contemplated  hereby,  except  that the  Seller  shall bear all
transfer and issuance taxes imposed on such purchase and sale.

     14. Entire  Agreement.  This  Agreement  constitutes  the entire  agreement
between  the  parties  hereto  with  respect to the  subject  matter  hereof and
supersedes  all prior  agreements and  understandings  between such parties with
respect to such subject matter.

     15. Severability. If any provision of this Agreement shall be held invalid,
illegal or unenforceable, the validity, legality and enforceability of the other
provisions hereof shall not be affected thereby.

     16. Captions.  The Section captions herein are for convenience of reference
only  and  are  not  intended  to be a  part  of or to  affect  the  meaning  or
interpretation of this Agreement.

     17. Specific  Performance.  The parties acknowledge that money damages will
not be a  sufficient  remedy for breach of this  Agreement  and that the parties
hereto may obtain specific  performance or other injunctive relief,  without the
necessity of posting a bond or security therefor.


     IN WITNESS  WHEREOF,  the parties  hereto have caused this  Agreement to be
executed and delivered as of the date first above written.






ENABLE GROWTH PARTNERS, L.P.


By:  /s/ Mitch Levine
Name (Please Print): Mitch Levine
Title Capacity: Managing Partner



XMARK FUND, L.P.


By: /s/ Mitchell D. Kaye
Name: Mitchell D. Kaye
Title: Chief Investment Officer







                                                                       Exhibit 8


                          SECURITIES PURCHASE AGREEMENT

     This  SECURITIES  PURCHASE  AGREEMENT,  dated as of January  24, 2005 (this
"Agreement"),  is by and between Enable Growth Partners,  L.P., a ______ limited
partnership  (the  "Purchaser"),  and Xmark Fund, Ltd, .a Cayman Island exempted
company ("Seller").

     WHEREAS, the Seller owns 92,641 shares of Series A-1 Convertible  Preferred
Stock (the "Preferred Stock") of AeroGen Inc. (the "Issuer"); and

     WHEREAS,   the  Issuer  has  granted   Seller  certain   registration   and
indemnification  rights in  connection  with the  registration  of the shares of
Common Stock underlying the Preferred Stock owned by Seller (the "Rights"); and

     WHEREAS,  the Seller wishes to sell 29,645 shares (the "Preferred  Shares")
of the Preferred  Stock,  and assign the Rights  associated  with such Preferred
Shares,  to the Purchaser and the Purchaser is willing to purchase the Preferred
Shares from the Seller, and take the associated Rights by assignment.

     NOW,  THEREFORE,  in  consideration  of the  foregoing  and the  covenants,
agreements  and  warranties  contained  herein,  the  sufficiency  of  which  as
consideration is hereby acknowledged, the parties agree as follows:

     1.  Definitions.  When used  herein,  the  following  terms  shall have the
indicated meanings:

     "Encumbrance"   means  any   pledge,   hypothecation,   assignment,   lien,
restriction,  charge, claim, security interest, option, preference,  priority or
other preferential arrangement of any kind or nature whatsoever.

     "Transfer  Restriction"  means,  with  respect  to any  security  or  other
property,  any condition to or  restriction on the ability of the holder thereof
to sell,  assign or otherwise  transfer  such  security or other  property or to
enforce the provisions  thereof or of any document related thereto,  whether set
forth in such  security  or other  property  itself or in any  document  related
thereto or arising by  operation of law,  including,  without  limitation,  such
conditions or restrictions  arising under federal,  state or foreign  securities
laws or under contract.

     2. Sale and Purchase.

     (a) Simultaneously  herewith,  the Seller is selling to the Purchaser,  and
the Purchaser is purchasing from the Seller (the  "Transaction"),  the Preferred
Shares for an aggregate  purchase price (the "Purchase Price") of $533,664.00 in
cash.

     (b) Simultaneously  herewith, the Seller is delivering to the Purchaser, at
the address set forth in Section 8 hereof, the Preferred Shares, duly endorsed

     (c) Simultaneously  herewith, the Purchaser is delivering to the Seller the
Purchase  Price by wire transfer of immediately  available  funds to the account
designed in writing by the Seller.

     3. Representations, Warranties and Agreements of the Seller.

     The Seller hereby  represents,  warrants and agrees on the date hereof,  as
follows:

     (a) The Seller has full power and  authority  to enter into this  Agreement
and to  consummate  the  Transaction.  This  Agreement has been duly and validly
executed  and  delivered  by the Seller  and  constitutes  the legal,  valid and
binding  obligation of the Seller,  enforceable  in  accordance  with its terms,
except  as  such  enforceability  may  be  limited  by  applicable   bankruptcy,
insolvency,  moratorium,  reorganization  or  similar  laws from time to time in
effect that  affect  creditors'  rights  generally,  and by legal and  equitable
limitations on the availability of specific remedies.





     (b) The execution, delivery and performance by the Seller of this Agreement
and  consummation  by the  Seller of the  Transaction  do not and will not:  (i)
violate  any decree or  judgment  of any court or other  governmental  authority
applicable  to or binding on the  Seller;  (ii)  violate  any  provision  of any
federal  or  state  statute,  rule  or  regulation  which  is,  to the  Seller's
knowledge,  applicable to the Seller; or (iii) violate any contract to which the
Seller or any of its assets or properties are bound. To the Seller's  knowledge,
no consent or approval of, or filing with, any  governmental  authority or other
person  not  a  party  hereto  is  required  for  the  execution,  delivery  and
performance  by  the  Seller  of  this  Agreement  or  the  consummation  of the
Transaction,  except for such  consents  or  approvals  of the  Issuer  required
pursuant  to  the  terms  of the  Preferred  Shares  or  any of the  transaction
documents executed in connection with the Seller's  acquisition of the Preferred
Shares.

     (c) Seller paid full purchase  price for,  became  beneficial  owner of and
acquired from the Issuer the Preferred Shares on a date that was at least thirty
(30) days prior to the date hereof.

     (d) With  respect  to the  Transaction,  (a) the  Seller is the  record and
beneficial owner of the Preferred  Shares,  free and clear of any  Encumbrances,
except for those  Encumbrances  imposed by securities  laws  generally;  (b) the
Preferred  Shares to be delivered  are not subject to any Transfer  Restriction,
other than (i) any restrictions, if any, set forth in the terms of the Preferred
Shares or the purchase  agreement  pursuant to which such Preferred  Shares were
acquired and (ii) the  restriction  that the Preferred  Shares and the shares of
the  Issuer's  common  stock  underlying  the  Preferred  Shares  have  not been
registered under the Securities Act and, therefore, cannot be resold unless they
are registered  under the Securities Act and applicable state securities laws in
a transaction exempt from or not subject to the registration requirements of the
Securities Act and applicable state  securities laws (the "Permitted  Securities
Law  Restriction");  and (c)  upon  the  transfer  of the  Preferred  Shares  to
Purchaser,  Purchaser will acquire good and marketable  title thereto  (assuming
that Purchaser is a bona fide  purchaser  within the meaning of Section 8-302 of
the New York  Uniform  Commercial  Code),  and will be the legal and  beneficial
owner of such Preferred  Shares,  free and clear of any Encumbrances or Transfer
Restrictions, other than the Permitted Securities Law Restriction.

     (e) No proceedings  relating to the Preferred Shares are pending or, to the
knowledge  of  the  Seller,   threatened   before  any  court,   arbitrator   or
administrative  or governmental  body that would  adversely  affect the Seller's
right to transfer the Preferred Shares to the Purchaser.

     (f) The  Seller  has  provided  or made  available  to the  Purchaser  upon
Purchaser's written request a copy of the Preferred Shares, as well as any other
information  and  documents  reasonably  requested  by the  Purchaser,  and such
information  provided to the Purchaser  completely and accurately  describes any
Transfer Restrictions applicable to the Preferred Shares.

     4. Representations, Warranties and Agreement of the Purchaser.

     The Purchaser hereby represents, warrants and agrees as of the date hereof,
as follows:

     (a) The Purchaser is duly organized,  validly existing and in good standing
in its jurisdiction of organization.

     (b) The Purchaser has full power and authority to enter into this Agreement
and to consummate the  Transaction.  The execution,  delivery and performance of
this  Agreement by the  Purchaser  have been duly  authorized  by all  necessary
corporate/company/partnership  proceedings  on the part of the  Purchaser.  This
Agreement has been duly and validly  executed and delivered by the Purchaser and
constitutes  the  legal,   valid  and  binding   obligation  of  the  Purchaser,
enforceable in accordance with its terms,  except as such  enforceability may be
limited by applicable  bankruptcy,  insolvency,  moratorium,  reorganization  or
similar  laws in  effect  that  affect  the  enforcement  of  creditors'  rights
generally and by equitable limitations on the availability of specific remedies.

     (c) The  execution,  delivery  and  performance  by the  Purchaser  of this
Agreement and  consummation  by the Purchaser of the Transaction do not and will
not:  (i)  violate  any decree or  judgment  of any court or other  governmental
authority applicable to or binding on the Purchaser;  (ii) violate any provision
of any federal or state statute, rule or regulation which is, to the Purchaser's





knowledge,  applicable to the Purchaser; (iii) violate any contract to which the
Purchaser  is a  party  or by  which  the  Purchaser  or any of  its  assets  or
properties  are bound;  or (iv)  violate or conflict  with any  provision of the
charter or by-laws of the Purchaser.  No consent or approval of, or filing with,
any  governmental  authority  or other person not a party hereto is required for
the  execution,  delivery and  performance by the Purchaser of this Agreement or
the consummation of the Transaction.

     (d) The  Purchaser  is an  "accredited  investor"  within  the  meaning  of
Regulation D under the Securities  Act. The Purchaser is acquiring the Preferred
Shares pursuant to the Transaction  hereunder for its own account and not with a
view to the  distribution  thereof (within the meaning of the Securities Act) in
violation of applicable  securities laws.  Purchaser has no present intention of
selling,  granting any participation in, or otherwise distributing the Preferred
Shares.  The acquisition by Purchaser of the Preferred  Shares shall  constitute
confirmation of the representation by the Purchaser that Purchaser does not have
any contract,  undertaking,  agreement or  arrangement  with any person to sell,
transfer or grant  participations  to such person or to any third  person,  with
respect to the Preferred Shares. The Purchaser acknowledges that (i) each of the
Preferred  Shares is a  "restricted  security" for purposes of Rule 144 and (ii)
the Preferred  Shares,  and the shares of the Issuer's  common stock  underlying
such Preferred  Shares,  have not been registered  under the Securities Act and,
therefore,  cannot be resold unless they are registered under the Securities Act
or in a transaction exempt from or not subject to the registration  requirements
of the Securities Act.

     (e) The Purchaser is aware of the Issuer's  business  affairs and financial
condition,  and has acquired sufficient information about the Issuer to reach an
informed and knowledgeable decision to acquire the Preferred Shares.

     (f) The  Purchaser  is aware that the Seller,  Xmark Fund,  Ltd.  and Xmark
Asset Management, LLC (collectively,  the "Xmark Funds") may be in possession of
certain  nonpublic  information  concerning the Company and the Preferred Shares
(the "Xmark Information"), and that the Xmark Funds have agreed with the Company
to keep the Xmark Information  confidential.  The Purchaser  acknowledges that a
reasonable  investor  could deem that the Xmark  Information  is  material to an
investment  decision,  and that the  Xmark  Information  could be of an  adverse
nature to an investor in the Preferred Shares.  The Purchaser is freely deciding
to purchase the Preferred  Shares at the  agreed-upon  price for its own reasons
based on the  information  it currently  possesses,  which it deems  sufficient,
notwithstanding  that it may lack access to the Xmark  Information,  to make its
decision to  participate in the purchase and sale of the Preferred  Shares.  The
Purchaser  does not and will not  request,  desire or  require  any of the Xmark
Funds, now or in the future,  to disclose any or all of the Xmark Information to
the Purchaser or any of its affiliates, agents or representatives.

     (g) The Purchaser is a  sophisticated  investor and has such  knowledge and
experience in financial and business  matters as to be capable of evaluating the
merits and risks of its purchase of and investment in the Preferred Shares.  The
Purchaser is aware that an investment in the  Preferred  Shares  involves a high
degree  of risk and that  the  Purchaser  may  lose  the  entire  amount  of its
investment in the Preferred  Shares.  The Purchaser is able to bear the economic
risk of its investment in the Preferred  Shares and can afford the complete loss
of such investment.

     5. Purchaser Release and Waiver.  The Purchaser agrees not to pursue and to
release fully any potential suits, claims, causes of action,  remedies,  damages
and other  actions  whatsoever,  at law or in equity,  against  any of the Xmark
Funds and their respective affiliates,  officers,  directors, agents, employees,
representatives and assigns, arising out of the purchase of the Preferred Shares
or the  nondisclosure of the Xmark  Information to the Purchaser.  The Purchaser
hereby acknowledges receipt of satisfactory consideration for the agreements set
forth in this  paragraph,  including but not limited to the  consummation of the
purchase and sale of the Preferred Shares at the agreed-upon purchase price. The
Purchaser  acknowledges  and agrees that Seller is relying on this  Section 6 in
engaging in the sale herein,  and would not engage in the sale of the  Preferred
Shares in the absence of this Section 6.


     6 Conditions Precedent to Obligations of the Purchaser.  The obligations of
the  Purchaser  are  subject to the  satisfaction  of the  following  conditions
precedent:

     (a) The representations and warranties of the Seller contained herein shall
be true and correct as of the date hereof.





     (b) The Seller shall have complied with all of its covenants and agreements
contained herein to be performed by it on or prior to the date hereof.

     7.  Conditions  Precedent to Obligations of the Seller.  The obligations of
the  Seller  are  subject  to  the  satisfaction  of  the  following  conditions
precedent:

     (a) The  representations  and warranties of the Purchaser  contained herein
shall be true and correct as of the date hereof.

     (b) The  Purchaser  shall  have  complied  with  all of its  covenants  and
agreements  contained  herein  to be  performed  by it on or  prior  to the date
hereof.

     (c) The Seller shall have received the wire transfer referred to in Section
8(c).

     8. Settlement.

     (a) Settlement of the Transaction  shall take place on the date agreed upon
by the  parties but in no event  later than  January  25, 2005 (the  "Settlement
Date").  On the Settlement Date,  subject to Sections 6 and 7 of this Agreement,
the Seller shall deliver to the Purchaser the Preferred  Shares against  payment
by the Purchaser of the Purchase  Price.  The purchase and sale of the Preferred
Shares and the assignment of all Rights,  privileges,  benefits and other rights
associated therewith,  including without limitation rights to dividends that are
declared and payable on and after (but excluding dividends payable prior to) the
Settlement Date, shall be effective as of the Settlement Date.

     (b) The  Preferred  Shares  delivered  to the  Purchaser  pursuant  to this
Agreement shall be free and clear of all Encumbrances and Transfer  Restrictions
other  than the  Permitted  Securities  Law  Restriction.  The  transfer  of the
Preferred Shares to the Purchaser shall have been registered on the books of the
Issuer and/or any applicable transfer agent. Unless otherwise  instructed by the
Purchaser, the Preferred Shares should be delivered to:

     (c)  The  Purchase  Price  shall  be paid by wire  transfer  of immediately
available funds to the following bank account:

         Chase Manhattan Bank
         ABA #:   021-000-021
         FBO:          Citigroup - Smith Barney Inc
         A/C#:         066-198038
         FFC:          Xmark Fund, Ltd.
         A/C#:         232-97167-12-265

     (d)  Each of the Purchaser and the Seller will, upon the reasonable request
of the other,  execute  and  deliver all other such  documents  and  instruments
reasonably  deemed necessary or desirable by the other party to fully effect the
purchases and sales contemplated hereby.

     9. Amendment.  This Agreement may be amended,  modified or supplemented but
only in a writing signed by the Seller and the Purchaser.

     10. Notices. Any notice, request, instruction or other document to be given
hereunder  by a party  hereto  (other than the  documents to be delivered by the
Seller to the  Purchaser  pursuant  to Section 7, which  shall be  delivered  as
described  therein)  shall be in writing and shall be deemed to have been given,
(a) when received if given in person or by a courier or a courier service or (b)
on the date of transmission if sent by facsimile transmission:





               (a)   If to the Seller, addressed as follows:

                     Xmark Funds
                     301 Tresser Boulevard, Suite 1320
                     Stamford, CT 06901
                     Attn:  Mitchell Kaye
                     T: 203-653-2500
                     F: 203-653-2501

               (b)   If to the Purchaser, addressed as follows:

                     [PLEASE PROVIDE]

or to such other person or address as a party hereto may designate for itself by
notice given as herein provided.

     11.  Counterparts.  This  Agreement  may  be  executed  in  any  number  of
counterparts  (including  by  facsimile  transmission),  each of which  shall be
deemed an original,  but all of which together shall constitute one and the same
agreement.

     12.  APPLICABLE  LAW. THIS AGREEMENT  SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE  WITH THE LAWS OF THE STATE OF NEW YORK (without  reference to choice
OF law doctrine).

     13. Expenses.  Except as otherwise  expressly  provided herein,  each party
hereto will bear its own expenses in connection with the purchase(s) and sale(s)
of the  Warrant  contemplated  hereby,  except  that the  Seller  shall bear all
transfer and issuance taxes imposed on such purchase and sale.

     14. Entire  Agreement.  This  Agreement  constitutes  the entire  agreement
between  the  parties  hereto  with  respect to the  subject  matter  hereof and
supersedes  all prior  agreements and  understandings  between such parties with
respect to such subject matter.

     15. Severability. If any provision of this Agreement shall be held invalid,
illegal or unenforceable, the validity, legality and enforceability of the other
provisions hereof shall not be affected thereby.

     16. Captions.  The Section captions herein are for convenience of reference
only  and  are  not  intended  to be a  part  of or to  affect  the  meaning  or
interpretation of this Agreement.

     17. Specific  Performance.  The parties acknowledge that money damages will
not be a  sufficient  remedy for breach of this  Agreement  and that the parties
hereto may obtain specific  performance or other injunctive relief,  without the
necessity of posting a bond or security therefor.


     IN WITNESS  WHEREOF,  the parties  hereto have caused this  Agreement to be
executed and delivered as of the date first above written.






ENABLE GROWTH PARTNERS, L.P.


By:  /s/ Mitch Levine
Name (Please Print): Mitch Levine
Title Capacity: Managing Partner




XMARK FUND, LTD.


By: /s/ Mitchell D. Kaye
Name: Mitchell D. Kaye
Title: Chief Investment Officer