IXION BIOTECHNOLOGY INC
SB-2/A, 1997-12-10
PHARMACEUTICAL PREPARATIONS
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AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON    December 9, 1997    
                          REGISTRATION NO. 333-334765                   

                         SECURITIES AND EXCHANGE COMMISSION
                               Washington, D.C. 20549
                              
                                   AMENDMENT NO.   3    
                                         TO
                                      FORM SB-2
                              REGISTRATION STATEMENT
                                      Under
                            THE SECURITIES ACT OF 1933
                          
                            IXION BIOTECHNOLOGY, INC.
                (Name of Small Business Issuer in Its Charter)

           Delaware                    2834                     59-3174033
       (State or Other           (Primary Standard           (I.R.S. Employer
       Jurisdiction of              Industrial              Identification No.)
      Incorporation or            Classification   
        Organization)              Code Number)

                               12085 Research Drive
                              Alachua, Florida 32615
                                   904-418-1428
    (Address and Telephone Number of Principal Executive Offices and Principal
                               Place of Business)

                               Weaver H. Gaines
                              12085 Research Drive
                            Alachua, Florida 32615
                                 904-418-1428
               (Name, Address and Telephone Number of Agent for Service)
                                   ------
                                  Copy to:
                             Bruce Brashear, Esq.
                           920 NW 8th Ave., Suite A
                            Gainesville, FL 32601
                                 352-336-0800
                          Facsimile No. 352-336-0505

     Approximate Date of Proposed Sale to the Public: As soon as practicable 
after this Registration Statement becomes effective.

     If this Form is filed to register additional securities for an offering 
pursuant to Rule 462(b) under the Securities Act, please check the following 
box and list the Securities Act registration statement number of the earlier 
effective registration statement for the same offering. 

     If this Form is a post-effective amendment filed pursuant to Rule 462(c) 
under the Securities Act, please check the following box and list the 
Securities Act registration statement number of the earlier effective 
registration statement for the same offering. 

     If this Form is a post-effective amendment filed pursuant to Rule 462(d) 
under the Securities Act, check the following box and list the Securities Act 
registration statement number of the earlier effective registration statement 
for the same offering. 

     If delivery of the prospectus is expected to be made pursuant to Rule 
434, please check the following box. 

     If any of the securities being registered on this Form are to be offered 
on a delayed or continuous basis pursuant to Rule 415 under the Securities Act 
of 1933, check the following box. /X/



<PAGE>

                       CALCULATION OF REGISTRATION FEE

Title of Each     Amount to be    Proposed Max    Proposed Max    Amount of
Class of          Registered      Offering        Aggregate       Registration
Securities to                     Price Per       Offering        Fee
be Registered                     Unit (1)        Price (1)

Units,
    consisting
      of          400,000 Units     $10.00        $4,000,000       $1,212
 (a) One Share
     Voting
     Common 
     Stock, 
     par value
     $0.01 per
     share 
     ("Common 
     Stock")      400,000 Shares               
(b) .25 Charitable
    Benefit 
    Warrant to
    purchase 
    shares of 
    Voting
    Common Stock
    at $20.00 per
    share         100,000 Warrants                

Voting Common 
Stock purchasable
pursuant to
Warrants          100,000 Shares    $20.00        $2,000,000      $606

 (1) Estimated solely for purposes of calculating the registration fee.

     The Registrant hereby amends this Registration Statement on such date or 
dates as may be necessary to delay its effective date until the Registrant 
shall file a further amendment which specifically states that this 
Registration Statement shall thereafter become effective in accordance with 
Section 8(a) of the Securities Act of 1933 or until the Registration Statement 
shall become effective on such date as the Commission, acting pursuant to said 
Section 8(a), may determine.

<PAGE>

PART II
INFORMATION NOT REQUIRED IN PROSPECTUS

Item 24.  Indemnification of Directors and Officers.

     Under Delaware law, a corporation may indemnify any person who was or is 
a party or is threatened to be made a party to an action (other than an action 
by or in the right of the corporation) by reason of his service as a director 
or officer of the corporation, or his service, at the corporation's request, 
as a director, officer, employee or agent of another corporation or other 
enterprise, against expenses (including attorneys' fees) that are actually and 
reasonably incurred by him ("Expenses"), and judgments, fines and amounts paid 
in settlement that are actually and reasonably incurred by him, in connection 
with the defense or settlement of such action, provided that he acted in good 
faith and in a manner he reasonably believed to be in or not opposed to the 
corporation's best interests, and, with respect to any criminal action or 
proceeding, had no reasonable cause to believe that his conduct was unlawful.  
Although Delaware law permits a corporation to indemnify any person referred 
to above against Expenses in connection with the defense or settlement of an 
action by or in the right of the corporation, provided that he acted in good 
faith and in a manner he reasonably believed to be in or not opposed to the 
corporation's best interests, if such person has been judged liable to the 
corporation, indemnification is only permitted to the extent that the Court of 
Chancery (or the court in which the action was brought) determines that, 
despite the adjudication of liability, such person is entitled to indemnity 
for such Expenses as the court deems proper.  The General Corporation Law of 
the State of Delaware also provides for mandatory indemnification of any 
director, officer, employee or agent against Expenses to the extent such 
person has been successful in any proceeding covered by the statute.  In 
addition, the General Corporation Law of the State of Delaware provides the 
general authorization of advancement of a director's or officer's litigation 
expenses in lieu of requiring the authorization of such advancement by the 
board of directors in specific cases, and that indemnification and advancement 
of expenses provided by the statute shall not be deemed exclusive of any other 
rights to which those seeking indemnification or advancement of expenses may 
be entitled under any bylaw, agreement or otherwise.

     The Certificate of Incorporation (the "Certificate") of the Company 
provides that, to the fullest extent permitted by applicable law, as amended 
from time to time, the Company will indemnify any person who was or is a party 
or is threatened to be made a party to an action, suit or proceeding (whether 
civil, criminal, administrative or investigative) by reason of the fact that 
such person is or was director, officer, employee or agent of the Company or 
serves or served any other enterprise at the request of the Company.

     In addition, the Certificate provides that a director of the Company 
shall not be personally liable to the Company or its stockholders for monetary 
damages for breach of the director's fiduciary duty.  However, the Certificate 
does not eliminate or limit the liability of a director for any of the 
following reasons: (i) a breach of the director's duty of loyalty to the 
Company or its stockholders; (ii) acts or omissions not in good faith or that 
involve intentional misconduct or knowing violation of law; or (iii) a 
transaction from which the director derived an improper personal benefit.

     The Company intends to purchase and maintain directors' and officers' 
insurance as soon as the Board of Directors determines practicable, in amounts 
which they consider appropriate, insuring the directors against any liability 
arising out of the director's status as a director of the Company regardless 
of whether the Company has the power to indemnify the director against such 
liability under applicable law.

Item 25.  Other Expenses of Issuance and Distribution.

     SEC registration fee..........................................$  1,818
     Printing expenses.............................................  20,000
     Distribution .................................................  18,000
     Advertising ..................................................  50,000
     Fees and expenses of counsel..................................  30,000
     Fees and expenses of accountants..............................  20,000
     Premium on D & O insurance....................................  25,000
     Transfer agent and registrar fees.............................   4,000
     Warrant agent fees............................................   1,500
     Blue sky fees and expenses....................................  40,000
     Miscellaneous.................................................  11,394
          Total....................................................$221,712


     Except for the SEC registration, all of the foregoing expenses have been 
estimated.  All expenses will be paid by the Company.

Item 26.  Recent Sales of Unregistered Securities.

     Set forth below is information as to securities sold by Ixion within the 
past three years which were not registered under the Securities Act of 1933 
(the "Act").  No underwriters were involved in any of the sales so there were 
no underwriting discounts or commissions.  All  outstanding securities are 
deemed to be restricted securities for the purposes of the Act.  All 
certificates representing such issued and outstanding restricted securities of 
the Company have been properly legended and the Company has issued "stop 
transfer" instructions to its transfer agent with respect to such securities, 
which legends and stop transfer instructions are presently in effect unless 
such securities have been registered under the Securities Act or have been 
transferred pursuant to an appropriate exemption from the registration 
provisions of the Securities Act. 

     (a)     On September 30, 1994, two directors and senior officers of the 
     Company, who may be deemed promoters, converted an aggregate of 
     $18,000 of cash loans made to the Company under the terms of a 
     subordinated convertible note agreement into a total of 900,000 
     shares of Common Stock, at a price of $0.02 per share, and the 
     Company's tax advisor was issued 5,000 shares of Common Stock in 
     exchange for services valued at $100 or $0.02 per share. The Company
     issued the above securities without registration in reliance upon 
     the exemption provided by Section 4(2) of the Act as a transaction to
     a limited number of    sophisticated     investors which did not involve a
     public offering, general solicitation, or general advertisement.

     (b)   Restricted shares  of Common Stock have been issued to 
     Members of the Board of Directors, Members of the Scientific 
     Advisory Board, and key employees under the Company's Board 
     Retainer Plan as follows:

          On September 30, 1994, 5,000 shares of Common Stock to a 
          director for service as a director valued at $100 or $0.02 
          per share.

          On May 31, 1995, 10,000 shares of Common Stock (5,000 shares 
          to each of two directors) for services as directors valued 
          at an aggregate of $7,500 or $.75 per share.

          On June 10, 1996, 34,000 shares of Common Stock (5,000 
          shares to each of two directors, 5,000 shares to each of two 
          members of the Scientific Advisory Board, for services as 
          directors or scientific advisors and 14,000 shares of Common 
          Stock to its Vice President - Research and Development as a 
          hiring bonus for services to be rendered) valued at an 
          aggregate of $92,000 (a portion of which is unearned 
          compensation) or $3.00 per share.

          On September 15, 1996, 10,000 shares of Common Stock (5,000 
          shares to each of two members of the Scientific Advisory 
          Board) for services as scientific advisors valued at 
          $100,000 (a portion of which is unearned compensation) or 
          $10.00* per share.  

          On October 10, 1996, 5,000 shares of Common Stock to a 
          member of the Scientific Advisory Board for services as a 
          scientific advisor valued at $50,000 (a portion of which is 
          unearned compensation) or $10.00* per share. 

          On February 11, 1997, 10,000 shares to its Director of 
          Research, Oxalate Division, as a hiring bonus for services 
          to be rendered valued at $100,000 (a portion of which is 
          unearned compensation) or $10.00* per share.

          On June 27, 1997, 7,000 shares of Common Stock (1,000 shares 
          to each of two directors, and 1,000 shares to each of five 
          members of the Scientific Advisory Board, for services as 
          directors or scientific advisors) valued at $70,000 (a 
          portion of which is unearned compensation) or $10.00* per 
          share.

          On July 1, 1997, 3,000 shares to its Associate Director of 
          Research, Diabetes Division, as a hiring bonus for services 
          to be rendered (a portion of which is unearned compensation) 
          valued at $30,000 or $10.00* per share.

     The Company issued the above securities without registration 
     in reliance upon the exemption provided by Section 4(2) of the
     Act as a transaction to a limited number of    sophisticated     
     investors which did not involve a public offering, general solicitation,
     or general advertisement and the exemption provided by Rule 701 
     promulgated under the Act.

     (c)     On October 17, 1994, a director and senior officer of the 
     Company, who may be deemed a promoter, received 650,000 shares of 
     Common Stock in exchange for all his interest in certain oxalate 
     technology and his agreement to an exclusive consulting agreement 
     with the Company, valued at the price of $13,000 or $0.02 per 
     share.  The Company issued the above securities without registration
     in reliance upon the exemption provided by Section 4(2) of the Act
     as a transaction to a limited number of    sophisticated     investors
     which did not involve a public offering, general solicitation, or general
     advertisement.

     (d)     On October 31, 1994, a consultant to the Company canceled $1,000 
     of deferred consulting fees in exchange for 10,000 shares of 
     Common Stock at the price of $0.10 per share.  The Company
     issued the above securities without registration in reliance upon 
     the exemption provided by Section 4(2) of the Act as a transaction to
     a limited number of    sophisticated     investors which did not involve a
     public offering, general solicitation, or general advertisement.


     (e)     On November 10, 1994, 10 members of the immediate families of the 
     founders of the Company, as well as a partnership whose general 
     partners include a director and senior officer of the Company and 
     members of his immediate family, purchased a total of 140,000 
     shares of Common Stock for a price of $14,000 or $0.10 per share.  The
     Company issued the above securities without registration in reliance upon
     the exemption provided by Section 4(2) of the Act as a transaction to
     a limited number of    sophisticated     investors which did not involve a
     public offering, general solicitation, or general advertisement and in 
     reliance upon the exemption provided by Rule 504 of Regulation D of the 
     Act as a sale of securities which, together with all sales within 12 
     months, aggregated less than $1,000,000.

     (f)     From March 20, 1995 to May 31, 1995, the Company sold an 
     aggregate of 500,000 shares of Common Stock to 26 accredited 
     investors and three unaccredited investors for an aggregate of 
     $375,000 or $.75 per share.  The Company issued the above 
     securities without registration in reliance upon
     the exemption provided by Section 4(2) of the Act as a transaction to
     a limited number of    sophisticated     investors which did not involve a
     public offering, general solicitation, or general advertisement and in 
     reliance upon the exemption provided by Rule 504 of Regulation D of the 
     Act as a sale of securities which, together with all sales within 12 
     months, aggregated less than $1,000,000.

     
     (g)     On September 21, 1995, the Company sold 3,000 shares of 
     Common Stock (together with 2,000 warrants to purchase Common 
     Stock at an exercise price of $2.00 per share expiring in 2000) to 
     an accredited investor for $5,000 in cash and a note due April 
     1997 for $6,000 or a price of $3.00 per share and $1.00 per 
     warrant.  The Company issued the above securities without registration
     in reliance upon the exemption provided by Section 4(2) of the Act as 
     a transaction to a limited number of    sophisticated     investors which 
     did not involve a public offering, general solicitation, or general 
     advertisement.


     (h)     Warrants have been issued to an institution in partial payment of 
     rent for the Company's facilities pursuant to the License 
     Agreement between the University of Florida Research Foundation, 
     Inc., and the Company as follows:

          On November 11, 1995, the Company issued warrants to 
          purchase 7,608 shares of Common Stock at an exercise price 
          of $2.00 per share expiring in 2000 , valued at $1.00 per 
          warrant. 

          In August, October, and November, 1996, the Company issued 
          warrants to purchase an aggregate of 8,022 shares of Common 
          Stock at an exercise price of $2.00 per share expiring in 
          2000, valued at $1.35 per warrant. 

     The Company issued the above securities without registration in reliance 
     upon the exemption provided by Section 4(2) of the Act as transactions to
     a limited number of    sophisticated     investors which did not involve a
     public offering, general solicitation, or general advertisement.



     (i)     On June 30, 1996, two directors and senior officers of the 
     Company, who may be deemed promoters, converted an aggregate of 

     $16,158 of cash loans made to the Company under the terms of a 
     subordinated convertible note agreement into a total of 21,544 
     shares of Common Stock, at a price of $.75 per share.  The Company
     issued the above securities without registration in reliance upon 
     the exemption provided by Section 4(2) of the Act as a transaction to
     a limited number of    sophisticated     investors which did not involve a
     public offering, general solicitation, or general advertisement.

     
     (j)     In October and November, 1996, the Company issued an 
     aggregate of $787,270 of Convertible Unsecured Notes due 2001 to 
     35 accredited and one unaccredited investors.  The Notes are 
     convertible at any time prior to maturity into a maximum of 
     323,557 shares of Common Stock at conversion prices ranging from 
     $4.20 to $2.10.  The conversion prices are based on the length of 
     time the investor holds the Notes prior to conversion.
     The Company issued the above securities without registration in reliance 
     upon the exemption provided by Section 4(2) of the Act as a transaction to
     a limited number of    sophisticated     investors which did not involve a
     public offering, general solicitation, or general advertisement and in 
     reliance upon the exemption provided by Rule 505 of Regulation D of the 
     Act as a sale of securities which, together with all sales within 12 
     months, aggregated less than $5,000,000 and were made to fewer than 35 
     investors.


     (k)     On February 11, 1997, the Company issued 1,000 shares of Common 
     Stock to two inventors in exchange for an exclusive license of a 
     patent entitled "Method for the Selective Control of Weeds, Pests 
     and Microbes," valued at $7,500 or $7.50 per share.  The Company
     issued the above securities without registration in reliance upon 
     the exemption provided by Section 4(2) of the Act as a transaction to
     a limited number of    sophisticated     investors which did not involve a
     public offering, general solicitation, or general advertisement.
 

     (l)     Warrants have been issued to Brandywine Consultants, Inc., 
     pursuant to the Consulting Agreement between the Company and 
     Brandywine Consultants, Inc., dated December 12, 1996, for 
     certain milestones as follows:

          On June 23, 1997, 3,000 warrants at an exercise price of 
          $5.00 per share of Common Stock, expiring June 2002.

          On October 24, 1997, 3,000 warrants at an exercise price of 
          $5.00 per share of Common Stock, expiring October 2002.

     The Company issued the above securities without registration in reliance 
     upon the exemption provided by Section 4(2) of the Act as a transaction to
     a limited number of    sophisticated     investors which did not involve a
     public offering, general solicitation, or general advertisement.


                     
     *  Based upon an assumed offering price of $10.00 per share.

Item 27.  Exhibits


  Exhibit
   Number                        Description

  *3.1     Certificate of Incorporation of Registrant
  *3.2     Certificate of Amendment to Certificate of Incorporation of 
           Registrant
  *3.3     Certificate of Amendment to Certificate of Incorporation of 
           Registrant
  *3.4     Bylaws of Registrant, as amended and restated

 **4.1    Form of Registrant's Common Stock Certificate
 **4.2    Form of Registrant's Charitable Benefit Warrant Certificate
 **4.3    Charitable Benefit Warrant Agreement
  *4.4     Warrant Agreement with Jeffrey W. Seel, dated November 7, 1995
  *4.5     Warrant Agreement with the University of Florida Research 
           Foundation, Inc., dated November 7, 1995
  *4.6     Warrant Agreement with the University of Florida Research 
           Foundation, Inc., dated August 1, 1996
  *4.7     Warrant Agreement with the University of Florida Research 
           Foundation, Inc., dated October 1, 1996
  *4.8     Warrant Agreement with the University of Florida Research 
           Foundation, Inc., dated November 7, 1996
 **4.9    Warrant Agreement with Brandywine Consultants, Inc., dated June 23, 
          1997
 **4.10   Warrant Agreement with Brandywine Consultants, Inc., dated October 
          24, 1997

***5.1      Opinion of Bruce Brashear, Esq. regarding legality
 **5.2    Opinion of Thacher Proffitt & Wood regarding certain tax matters

  *10.1    Chattel Mortgage Agreement with Carl Therapeutic, Inc., dated as of 
          January 1, 1996     
  *10.2    Consulting Agreement with Brandywine Consultants, Inc., dated 
          December 12, 1996
  *10.3    Consulting Agreement with Ammon B. Peck, dated February 21, 1997
  *10.4    Consulting Agreement with David C. Peck, dated July 1, 1996
  *10.5    Convertible Promissory Note with Weaver H. Gaines, dated March 31, 
          1993
  *10.6    Convertible Promissory Note with David C. Peck, dated October 15, 
          1993
  *10.7    Demand Promissory Note, Bridge Loan with Weaver H. Gaines, dated 
          April 15, 1996     
  *10.8    Demand Promissory Note, Bridge Loan with David C. Peck, dated April 
          15, 1996     
  *10.9    Deferred Compensation Plan Agreement with Weaver H. Gaines, dated 
          January 1, 1994     
  *10.10   Deferred Compensation Plan Agreement with Ammon B. Peck, dated June 
          1, 1994     
  *10.11   Deferred Compensation Plan Agreement with David C. Peck, dated 
          April 1, 1994     
  *10.12   Agreement to Purchase Shares, dated as of October 10, 1994
  *10.13   Note Purchase Agreement, dated as of September 13, 1996
  *10.14   Incubator License Agreement with the University of Florida Research 
          Foundation, Inc., dated June 26, 1995
  *10.15   Amendment No. 1, dated July 31, 1996 to Incubator License Agreement 
          with the University of Florida Research Foundation, Inc.
  *10.16   Amendment No. 2, dated October 1, 1996 to Incubator License 
          Agreement with the University of Florida Research Foundation, Inc.
  *10.17   Amendment No. 3, dated November 7, 1996 to Incubator License 
          Agreement with the University of Florida Research Foundation, Inc.
  *10.18   Amendment No. 4, dated January 21, 1997 to Incubator License 
          Agreement with the University of Florida Research Foundation, Inc.
  *10.19   Patent License Agreement with Randy S. Fischer and Roy A. Jensen 
          for U.S. Patent No. 5,187,071, "Method for the Selective Control of 
          Weeds, Pests, and Microbes," dated February 11, 1997
   10.20    Patent License Agreement with Research Component with the 
          University of Florida Research Foundation, Inc. relating to 
          Oxalobacter formigenes, dated January 11, 1995 (1)
   10.21    Amendment No. 1 to Patent License Agreement with Research 
          Component with the University of Florida Research Foundation, Inc. 
          relating to Oxalobacter formigenes, dated December 20, 1995
   10.22    Amendment No. 2 to Patent License Agreement with Research 
          Component with the University of Florida Research Foundation, Inc. 
          relating to Oxalobacter formigenes, dated October 9, 1996 (1)
   10.23    Patent License Agreement with Research Component with the 
          University of Florida Research Foundation, Inc. relating to 
          Pancreatic Stem Cells, dated February 17, 1995 (1)
   10.24    Amendment No. 1 to Patent License Agreement with Research 
          Component with the University of Florida Research Foundation, Inc. 
          relating to Pancreatic Stem Cells, dated October 9, 1996 (1)
   10.25    Patent License Agreement with Milton J. Allison, dated June 23, 
          1997. (1)
   10.26    Sponsored Research Agreement with Genetics Institute, Inc., dated 
          June 5, 1996 (1)     
  *10.27   Employment Agreement with Weaver H. Gaines, dated August 31, 1994
  *10.28   Employment Agreement with David C. Peck, dated August 31, 1994
  *10.29   1994 Stock Option Plan, as amended
 **10.30  1994 Board Retainer Plan, as amended
  *10.31   Consulting Agreement with Ammon Peck, dated October 6, 1994
  *10.32   Amendment No. 5 to Incubator License Agreement

  *11.1    Statement regarding computation of earnings per share (included as 
          Note 3 in Prospectus)

***24.1     Consent of Independent Accountants.
***24.2     Consent of Bruce Brashear, Esq. (included in Exhibit 5.1).
**24.3   Consent of Thacher Proffitt & Wood (included in Exhibit 5.2).

  *25.     Power of Attorney (included with the signature page to the 
          registration statement)

***27.      Financial Data Schedule

                      
   
(1)  Confidential information has been omitted from these document and filed
separately with the Commission pursuant to a request for Confidential 
Treatment.
    
*  Previously filed with Form SB-2 on August 29, 1997.
** Previously filed with Amendment 1 to Form SB-2 on November 7, 1997.
*** Previously filed with Amendment 2 to Form SB-2 on December 2, 1997.

Item 28.     Undertakings.

     (a)  Insofar as indemnification for liabilities arising under the 
Securities Act may be permitted to directors, officers and controlling persons 
of the Registrant pursuant to the foregoing provisions, or otherwise, the 
Registrant has been advised that in the opinion of the Securities and Exchange 
Commission such indemnification is against public policy as expressed in the 
Securities Act and is, therefore, unenforceable.  In the event that a claim 
for indemnification against such liabilities (other than the payment by the 
Registrant of expenses incurred or paid by a director, officer or controlling 
person of the Registrant in the successful defense of any action, suit or 
proceeding) is asserted by such director, officer or controlling person in 
connection with the securities being registered, the Registrant will, unless 
in the opinion of its counsel the matter had been settled by controlling 
precedent, submit to a court of appropriate jurisdiction the question whether 
such indemnification by it is against public policy as expressed in the 
Securities Act and will be governed by the final adjudication of such issue.

     (b)  The Registrant hereby undertakes that for purposes of determining 
any liability under the Securities Act, (i) the information omitted from the 
form of prospectus filed as part of this Registration Statement in reliance 
upon Rule 430A and contained in a form of prospectus filed by the Registrant 
pursuant to Rule 424(b)(1) or (4) or 497(h) under the Securities Act shall be 
deemed to be part of this Registration Statement as of the time it was 
declared effective, and (ii) each post-effective amendment that contains a 
form of prospectus shall be deemed to be a new registration statement relating 
to the securities offered therein, and the offering of such securities at that 
time shall be deemed to be the initial bona fide offering thereof.

(c) The undersigned Registrant hereby undertakes to file, during any 
period in which offers or sales are being made, a post-effective amendment to 
this registration statement:

     (i) (To include any prospectus required by section 10(a)(3) of the 
     Securities Act of 1933;

     (ii) To reflect in the prospectus any facts or events arising 
     after the effective date of the registration statement (or the most 
     recent post-effective amendment thereof) which, individually or in the 
     aggregate, represent a fundamental change in the information set forth 
     in the registration statement;

     (iii) To include any material information with respect to the plan 
     of distribution not previously disclosed in the registration statement 
     or any material change to such information in the registration 
     statement.


                                    SIGNATURES

     SIGNATURES

In accordance with the requirements of the Securities Act of 1933, the 
registrant certifies that it has reasonable grounds to believe that it meets 
all of the requirements for filing on Form SB-2 and authorized this 
registration statement to be signed on its behalf by the undersigned, in the 
city of Alachua, state of Florida, on the    Ninth     day of  December, 1997.

IXION BIOTECHNOLOGY, INC.




  By:   /S/
     Weaver H. Gaines, 
     Chairman of the Board and Chief 
     Executive Officer

In accordance with the requirements of the Securities Act of 1933, this 
Registration Statement has been signed by the following persons in the 
capacities on    December 9,    , 1997.


SIGNATURE                       TITLE

    
                                Chairman of the Board, Chief Executive Officer,
 Weaver H. Gaines               and Director


    *
                    *           President, Chief Financial Officer and Director
 David C. Peck


    /S/
                                Controller
Kimberly A. Ramsey

    *
                    *           Director
 David M. Margulies

    *
                     *          Director

 Vincent P. Mihalik

    /S/
*                               (attorney in fact)
 Weaver H. Gaines, 



NOTE: Certain portions of this document have been omitted based on a request
      for confidential treatment.  The non-public information has been filed
      with the Securities and Exchange Commission.  Omitted portions are
      designated with asterisks ("*").
     


                           Patent License Agreement
                           With Research Component







                  University of Florida Research Foundation 
                                     and
                          Ixion Biotechnology, Inc.


                               January 11, 1995





UF Case No. UF# 1203 "Oxalate Diagnostic Kit and Formyl-CoA Transferase Gene 
from           Oxalobacter Formigenes"

UF Case No. UF# 0973 "Reducing Oxalate Poisoning in Vertebrates Using 
Genetically           Engineered Organisms Expressing Cloned Oxalate 
Degrading Enzymes"

Patent Application "Materials and Methods for Detection of Oxalate," USSN 
08/262,424, filed           June 20, 1994


                           PATENT LICENSE AGREEMENT
                           WITH RESEARCH COMPONENT


                              TABLE OF CONTENTS



ARTICLE I - DEFINITIONS     1

ARTICLE II - GRANT     4

ARTICLE III - DUE DILIGENCE     5

ARTICLE IV - ROYALTIES     5

ARTICLE V - REPORTS AND RECORDS     7

ARTICLE VI - PATENT PROSECUTION     8

ARTICLE VII - INFRINGEMENT     8

ARTICLE VIII - PRODUCT LIABILITY     10

ARTICLE IX - DISCLAIMER OF WARRANTIES     11

ARTICLE X - EXPORT CONTROLS     11

ARTICLE XI - NON-USE OF NAMES     11

ARTICLE XII - ASSIGNMENT     12

ARTICLE XIII - TERMINATION     12

ARTICLE XIV - PAYMENTS, NOTICES AND OTHER COMMUNICATIONS     15

ARTICLE XV - MISCELLANEOUS PROVISIONS     16









                                   PREAMBLE

     This Agreement is made this 11th day of January 1995, (the "Effective 
Date") between the University of Florida Research Foundation, Inc., a not-for-
profit corporation duly organized and existing under the laws of the State of 
Florida and having its principal office at 223 Grinter Hall, Gainesville, 
Florida, 32611-2037  ("UFRFI"), and Ixion Biotechnology, Inc., a corporation 
duly organized under the laws of  Delaware, and having its principal office at 
One Progress Blvd., Box 26, Alachua, Florida 32615 ("Ixion").

                                  WITNESSETH

     WHEREAS, UFRFI is the owner of certain Patent Rights by assignment from 
the University of Florida (the "University") relating to UFRFI Case No. UF# 
0973 and Case No. UF# 1203,  and has the right to grant licenses under said 
Patent Rights, subject only to a royalty-free, nonexclusive license heretofore 
granted to the United States Government;

     WHEREAS, UFRFI desires to have the Patent Rights utilized in the public 
interest and is willing to grant a license thereunder;

     WHEREAS, Ixion has represented to UFRFI to induce UFRFI to enter into 
this Agreement, that Ixion is prepared to undertake the development, 
production, manufacture, marketing, and sale of products similar to the 
Licensed Products and/or the use of the Licensed Processes and that it shall 
commit itself to a thorough, vigorous, and diligent program of exploiting the 
Patent Rights commercially so that public utilization and royalty income to 
UFRFI shall result;

     WHEREAS, Ixion desires to obtain a license under the Patent Rights upon 
the terms and conditions of this Agreement; and

     WHEREAS, Ixion has certain additional research it desires which the 
parties agree should be conducted by the University;

     NOW, THEREFORE, in consideration of the premises and the mutual 
covenants contained herein the parties agree as follows:

            ARTICLE I - DEFINITIONS

     The following words and phrases have the following meanings:

     1.1     "Inventor" means Ammon B. Peck, Ph.D.
     1.2     "Ixion" means any of the following:

          (a)     a related company of Ixion, the voting stock of 
which is directly or indirectly at least 50% owned or 
controlled by Ixion;

          (b)     an organization which directly or indirectly 
controls more than 50% of the voting stock of Ixion; and

          (c)     an organization, the majority ownership of which 
is directly or indirectly common to the ownership of Ixion.

     1.3     "Licensed Know-How" means any technical data, information, or 
knowledge within the knowledge and possession of the Inventor on the Effective 
Date which is incorporated in or becomes part of the Patent Rights.
     
     1.4     "Licensed Product" means any product or part thereof which:

          (a)     is covered in whole or in part by an issued, 
unexpired claim or a pending claim contained in the Patent 
Rights in the country in which any Licensed Product is made, 
used, or sold;

          (b)     is manufactured by using a process which is 
covered in whole or in part by an issued, unexpired claim or 
a pending claim contained in the Patent Rights in the 
country in which any Licensed Process is used or in which 
such product or part thereof is used or sold;

          (c)     is derived from Patent Rights, Licensed Know-
How, or trade secrets related to or described in Patent 
Rights; or

          (d)     is sold, manufactured, or used in any country 
under this Agreement.

     1.5     "Licensed Process" means any process which: 

          (a)     is covered in whole or in part by an issued, 
unexpired claim or a pending claim contained in the Patent 
Rights;

          (b)     is derived from Patent Rights, Licensed Know-
How, or trade secrets related to or described in Patent 
Rights; or

          (c)     is used in any country under this Agreement.

     1.6     "Net Sales" means Ixion's, and its sublicensees' gross sales from 
the sale or lease of Licensed Products and Licensed Processes produced 
hereunder less the sum of the following:
          (a)     discounts allowed in amounts customary in the 
trade and brokers' or agents' commissions, if any, allowed 
and paid to independent parties in arms-length transactions;

          (b)     excise, value-added, or sales taxes, tariff 
duties or use taxes directly imposed and with reference to 
particular sales;

          (c)     outbound transportation prepaid or allowed; 

          (d)     amounts allowed or credited on returns; and

          (e)     packing costs and insurance costs if itemized 
separately.

No deductions shall be made for commissions paid to individuals  regularly 
employed by Ixion and on its payroll, or for cost of collections.  Licensed 
Products shall be considered "sold" when  invoiced.

     1.7     "Patent Rights" means all of the following UFRFI intellectual 
property:

          (a)     the United States and foreign patents or patent 
applications listed in Appendices A and B;

          (b)     United States and foreign patents issued from 
the applications listed in Appendices A and B and from 
divisionals and continuations of these applications;

          (c)     claims of U.S. and foreign continuation-in-part 
applications, and of the resulting patents, which are 
directed to subject matter specifically described in the 
U.S. and foreign applications listed in Appendices A and B;

          (d)     claims of all foreign patent applications, and 
of the resulting patents, which are directed to subject 
matter specifically described in the United States patents 
and/or patent applications described in (a), (b), or (c) 
above; and

          (e)     any reissues of United States patents described 
in (a), (b), (c), or (d) above.

     1.8     "Project Work" means the research work described in the Research 
Support Agreement.
     
     1.9     "Research Support Agreement" means that agreement attached hereto 
as Exhibit C, with its associated terms and conditions.

     1.10     "Territory" means all the countries of the world.

     1.11     "University Inventions" means individually and collectively all 
inventions, improvements, or discoveries patentable or unpatentable, which are 
conceived or made solely by one or more employees of the University, in 
performance of the Project Work.  All rights and title to University 
Inventions developed under the Research Support Agreement belong to the 
University and are subject to the terms of such Research Support Agreement.  
For the purposes of this section, the "making" of inventions shall be governed 
by U.S. laws of inventorship.

     1.12     "University Patents" means collectively and individually any and 
all United States and foreign patent applications and any and all issued 
United States Letters Patents and foreign patents owned by the University for 
University Inventions derived during Project Work under the Research Support 
Agreement.

                 ARTICLE II - GRANT

     2.1     UFRFI grants to Ixion the exclusive right and license to make, 
have made, use, lease, and sell the Licensed Products, and to practice the 
Licensed Processes and the Licensed Know-How, in the Territory to the end of 
the term for which the Patent Rights are granted unless sooner terminated 
according to the terms hereof.  

     2.2     UFRFI shall not grant any other license to make, have made, use, 
lease, or sell Licensed Products or to utilize Licensed Processes during the 
period of time commencing with the Effective Date of this Agreement and 
terminating with the expiration or termination of this Agreement.

     2.3     UFRFI reserves the right to practice under the Patent Rights for 
its own noncommercial research purposes.

     2.4     Ixion may sublicense others under this Agreement.  Each 
sublicense 
shall be consistent with the terms of this Agreement. 

     2.5     Any sublicenses granted by Ixion shall provide that the 
obligations to UFRFI of this Agreement shall be binding upon the sublicensee 
as if it were a party to this Agreement.  Ixion shall attach copies of this 
Agreement to sublicense agreements. 

     2.6     Ixion shall forward to UFRFI a copy of any sublicense agreement 
within 30 days of its execution and further shall forward to UFRFI annually a 
copy of such reports received by Ixion from its sublicensees during the 
preceding twelve-month period under the sublicenses as shall be pertinent to a 
royalty accounting under said sublicenses.

     2.7     The license granted hereunder shall not be construed to confer 
any 
rights upon Ixion by implication, estoppel, or otherwise as to any technology 
not specifically set forth herein.
     2.8     Ixion  shall not receive from sublicensees anything of value in 
lieu of cash payments in consideration for any sublicense under this 
Agreement, without the express prior written permission of UFRFI.

     2.9     Licensed Products leased or sold in the United States and covered 
by Patent Rights or other intellectual property rights that are subject to the 
non-exclusive royalty-free license to the United States government will be 
manufactured substantially in the United States.

     2.10     Ixion shall abide by all rights and limitations of U.S. Code, 
Title 35, Chapter 38, and implementing regulations thereof, for all patent 
applications and patents invented in whole or in part with federal funding.


        ARTICLE III - DUE DILIGENCE

     3.1     Ixion shall use its best efforts to bring one or more Licensed 
Products or Licensed Processes to market through a thorough, vigorous, and 
diligent program for exploitation of the Patent Rights to attain 
commercialization of Licensed Products and Licensed Processes.

     3.2     In addition, Ixion shall adhere to the following milestones:

          (a)     Ixion shall deliver to UFRFI on or before a date 
90 days from the Effective Date a business plan for the 
development of an urine oxalate detection kit. The business 
plan (or extract from the business plan) shall show for the 
forthcoming fiscal year  the amount of money, number and 
kind of personnel, and time budgeted for development of such 
kit.  Ixion shall provide similar plans or extracts to UFRFI 
on an annual basis on or before the ninetieth (90th) day 
following the close of each fiscal year.

          (b)     Ixion shall develop a working model on or before 
the first anniversary of the Effective Date. 

          (c)     Ixion shall comply with the Research Support 
Agreement attached as Exhibit C.

             ARTICLE IV - ROYALTIES

     4.1     For the rights, privileges and, license granted hereunder, Ixion 
shall pay royalties to UFRFI to the end of the term of the Patent Rights or 
until this Agreement is terminated as follows:

          (a)     A License Issue Fee of an amount equal to the 
out-of-pocket costs of patenting incurred prior to the 
Effective Date, such fee to be paid within 30 days of the 
receipt of an invoice therefor by Ixion;

          (b)     An Additional License Issue Fees of ********, of 
which ******** is due immediately upon the execution of this 
Agreement and ******** of which is  payable on the first 
business day on or after the 180th day after the Effective 
Date.  The Additional License Issue Fee  shall be creditable 
against any Running Royalties subsequently due under section 
4.1 (c) below; and

          (c)     A Running Royalty in an amount equal to **** of 
the Net Sales of the Licensed Products or Licensed Processes 
used, leased, or sold by or for Ixion or its sublicensees.

     4.2     No multiple royalties shall be payable because any Licensed 
Product, its manufacture, use, lease, or sale are or shall be covered by more 
than one Patent Rights patent application or Patent Rights patent licensed 
under this Agreement.

     4.3     Royalty payments shall be paid in United States dollars in 
Gainesville, Florida or at such other place as UFRFI may reasonably designate 
in writing consistent with the laws and regulations controlling in any foreign 
country.  If any currency conversion shall be required in connection with the 
payment of royalties hereunder, such conversion shall be made by using the 
exchange rate prevailing at the Chase Manhattan Bank (N.A.) on the last 
business day of the calendar quarterly reporting period to which such royalty 
payments relate.

     4.4     In the event the royalties set forth herein are higher than the 
maximum royalties permitted by the law or regulations of a particular country, 
the royalty payable for sales in such country shall be equal to the maximum 
permitted royalty under such law or regulations.  Notice of said event shall 
be provided to UFRFI.  An authorized representative of Ixion shall notify 
UFRFI, in writing, within 30 days of discovering that such royalties are 
approaching or have reached the maximum amount, and shall provide UFRFI with 
written documentation regarding the laws or regulations establishing such 
maximum.

     4.5     In the event that any taxes, withholding or otherwise, are levied 
by any taxing authority in connection with accrual or payment of any royalties 
payable by Ixion under this Agreement, and Ixion determines in good faith that 
it must pay such taxes, Ixion shall have the right to pay such taxes to the 
local tax authorities on behalf of UFRFI and payment of the net amount due 
after reduction by the amount of such taxes, shall fully satisfy Ixion's 
royalty obligations under this Agreement.  Ixion shall provide UFRFI with 
appropriate receipts or other documentation supporting such payment.  Ixion 
shall inform UFRFI in writing, within 30 days of notification that taxes will 
or have been levied by a taxing authority.

     4.6     In the event that a Licensed Product is sold in a combination 
package or kit containing other active products, then Net Sales for purposes 
of determining royalty payments on the combination package, shall be 
calculated using one of the following methods, but in no event shall the 
royalties payable to UFRFI be reduced to less than 50% of that provided for in 
Section 4.1 above:

     (a)     by multiplying the net selling price of that combination 
package by the fraction A/A+B, where A is the gross selling price, 
during the royalty-paying period in question, of the Licensed 
Product sold separately, and B is the gross selling price during 
the royalty period in question, of the other active products sold 
separately; or
     (b)     in the event that no such separate sales are made of the 
Licensed Product or any of the active products in such combination 
package during the royalty-paying period in question, Net Sales 
for the purposes of determining royalty payments, shall be 
calculated by dividing the net selling price of the combination 
package by the number of functions performed by the combination 
package sold where such package contains active agents other than 
those licensed under this Agreement.  The parties recognize that 
this provision will require consultation and that in the event a 
combination package or kit circumstance arises, the parties will 
negotiate in good faith to determine the calculation of Net Sales 
pursuant to this section.

     4.7     If it is necessary for Ixion to take any license(s) in a given 
country, under valid third-party patents which would be necessarily infringed 
by the practice of Licensed Processes or production of Licensed Products in 
that country, then Ixion can deduct up to 25% of the royalties otherwise due 
under this Agreement for Net Sales in that country, until such time as Ixion 
has recovered an amount equal to the royalties payable to such third parties.

    ARTICLE V - REPORTS AND RECORDS

     5.1     Ixion shall keep full, true, and accurate books of account 
containing all particulars that may be necessary for the purpose of showing 
the amounts payable to UFRFI hereunder.  Said books of account shall be kept 
at Ixion's principal place of business or the principal place of business of 
the appropriate division of Ixion to which this Agreement relates.  Said books 
and the supporting data shall be open at all reasonable times for three years 
following the end of the calendar year to which they pertain, to the 
inspection of UFRFI or its agents at UFRFI's expense for the purpose of 
verifying Ixion's royalty statements.

     5.2     Ixion, within 45 days after March 31, June 30, September 30, and 
December 31, of each year, shall deliver to UFRFI true and accurate reports, 
giving such particulars of the business conducted by Ixion and its 
sublicensees during the preceding three-month period under this Agreement as 
shall be pertinent to a royalty accounting hereunder.  These shall include at 
least the following:

          (a)     number of Licensed Products manufactured and 
sold;

          (b)     total billings for Licensed Products sold;

          (c)     an accounting for all Licensed Processes used or 
sold;

          (d)     deductions applicable to a determination of Net 
Sales;

          (e)     total royalties due;

          (f)     names and addresses of all sublicensees of 
Ixion; and

          (g)     a report on any patent extensions sought 
pursuant to section 6.1 hereof.

     5.3     With each such report submitted, Ixion shall pay to UFRFI the 
royalties due and payable under this Agreement.  If no royalties shall be due, 
Ixion shall so report.

     5.4  On or before the 90th day following the close of Ixion's fiscal 
year, Ixion shall provide UFRFI with Ixion's year-end balance sheet and an 
operating statement for the preceding fiscal year then ended.

     5.5     The royalty payments, license fees, and reimbursement for patent-
related expenses set forth in this Agreement shall, if overdue, bear interest 
until payment at the monthly rate of 1.0%.  The payment of such interest shall 
not foreclose UFRFI from exercising any other rights it may have as a 
consequence of the lateness of any payment.

    ARTICLE VI - PATENT PROSECUTION

     6.1     UFRFI shall apply for, seek issuance of, and maintain during the 
term of this Agreement the Patent Rights in the United States and in the 
foreign countries listed in Appendix B hereto.  The prosecution, filing, and 
maintenance of all Patent Rights patents and applications shall be the primary 
responsibility of UFRFI; provided, however, Ixion shall have reasonable 
opportunities to advise UFRFI and shall cooperate with UFRFI in such 
prosecution, filing, and maintenance.  Ixion shall seek patent extension for 
patents licensed under the Patent Rights in the United States and the foreign 
countries listed in Appendix B, under such applicable laws and regulations 
throughout such countries, where such patent extension rights are available 
currently or are available in the future.

     6.2     Payment of all fees and costs relating to the filing, 
prosecution, 
and maintenance of the Patent Rights shall be the responsibility of Ixion  
after the Effective Date.  UFRFI shall bill Ixion for these costs and fees.
     
         ARTICLE VII - INFRINGEMENT

     7.1     Ixion shall inform UFRFI promptly in writing of any alleged 
infringement of the Patent Rights by a third party and of any available 
evidence thereof.

     7.2     During the term of this Agreement, UFRFI shall have the right, 
but 
shall not be obligated, to prosecute at its own expense any such infringements 
of the Patent Rights.  If UFRFI prosecutes any such infringement, Ixion agrees 
that UFRFI may include Ixion as a co-plaintiff in any such suit, without 
expense to Ixion.  The total cost of any such infringement action commenced or 
defended solely by UFRFI shall be borne by UFRFI and UFRFI shall keep any 
recovery or damages for past infringement derived therefrom.

     7.3     If within six months after having been notified of any alleged 
infringement or such shorter time proscribed by law, UFRFI shall have been 
unsuccessful in persuading the alleged infringer to desist or shall not have 
brought and shall not be diligently prosecuting an infringement action, or if 
UFRFI shall notify Ixion at any time prior thereto of its intention not to 
bring suit against any alleged infringer, then, and in those events only, 

     (a)     Ixion shall have the right, but shall not be obligated, to 
prosecute at its own expense any infringement of the Patent Rights 
(keeping any recovery or damages for past infringements derived 
therefrom), and Ixion may, for such purposes, use the name of 
UFRFI as co-plaintiff; provided, however, that such right to bring 
an infringement action shall remain in effect only for so long as 
the license granted herein remains exclusive.  No settlement, 
consent judgment, or other voluntary final disposition of the suit 
may be entered into without the consent of UFRFI, which consent 
shall not unreasonably be withheld.  Ixion shall indemnify UFRFI 
against any order for costs that may be made against UFRFI in such 
proceedings.

     (b)     Payments which are earned under Article IV hereof shall be 
waived so long as any such infringement which the parties agree in 
good faith is material continues, such waiver not to exceed 50% of 
the royalties payable hereunder; provided, however, that such 
payments shall not be so waived so long as at least one suit or 
action is being prosecuted by UFRFI for infringement of a patent 
covering the Patent Rights.

     7.4     If Ixion has brought a suit pursuant to section 7.3 above, it 
shall have the right for such purpose to join UFRFI as a co-plaintiff at 
Ixion's expense.  UFRFI independently shall have the right to join any such 
suit or action brought by Ixion, and, in such event, shall pay one-half of the 
cost of such suit or action from the date of joining.  Any damages recovered 
by a suit or action in which UFRFI has paid its share of costs shall be first 
used to reimburse each party hereto for the cost of such suit or action 
(including attorney's fees) actually paid by each party hereto as the case may 
be, then to reimburse UFRFI for any payments waived under this Section 7.4, 
and the residue, if any, shall be divided equally between the parties hereto.

     7.5     In the event that a declaratory judgment action alleging 
invalidity or noninfringement of any of the Patent Rights shall be brought 
against Ixion, UFRFI, at its option, shall have the right, within 30 days 
after commencement of such action, to intervene and take over the sole defense 
of the action at its own expense.

     7.6     In any infringement suit as either party may institute to enforce 
the Patent Rights pursuant to this Agreement, the other party hereto shall, at 
the request and expense of the party initiating such suit, cooperate in all 
respects and, to the extent possible, have its employees testify when 
requested and make available relevant records, papers, information, samples, 
specimens, and the like.

   ARTICLE VIII - PRODUCT LIABILITY

     8.1     Ixion shall at all times during the term of this Agreement and 
thereafter, indemnify, defend, and hold UFRFI and the University, their 
trustees, officers, employees, and affiliates (the "Indemnitees"), harmless 
against all claims and expenses, including legal expenses and reasonable 
attorneys' fees, whether arising from a third party claim or resulting from 
UFRFI's enforcing this indemnification clause against Ixion, or arising out of 
the death of or injury to any person or persons or out of any damage to 
property and against any other claim, proceeding, demand, expense, or 
liability of any kind whatsoever resulting from the production, manufacture, 
sale, use, lease, consumption, or advertisement of the Licensed Products 
and/or Licensed Processes or arising from any right or obligation of Ixion 
hereunder.  This indemnification shall not apply to any liability, damage, 
loss, or expense to the extent that it is attributable to the negligence or 
intentional wrongdoing of the Indemnitees.

     8.2     Ixion shall, at its own expense, provide attorneys reasonably 
acceptable to UFRFI to defend against any actions brought or filed against any 
party indemnified hereunder with respect to the subject of indemnity contained 
herein, whether such actions are rightfully brought.

     8.3     At such time as any product, process, or service relating to, or 
developed pursuant to, this Agreement is being commercially distributed or 
sold (other than for the purpose of obtaining regulatory approvals) by Ixion 
or by a licensee, affiliate, or agent of Ixion, Ixion shall, at its sole cost 
and expense, procure and maintain policies of comprehensive general liability 
insurance naming the Indemnitees as additional insureds.  Such comprehensive 
general liability insurance shall provide (a) product liability coverage, and 
(b) broad form contractual liability coverage for Ixion's indemnification 
under sections 8.1 and 8.2 above.  If Ixion elects to self-insure, such self-
insurance program must be acceptable to UFRFI.  

     8.4     Ixion shall provide UFRFI with written evidence of such insurance 
upon request, and shall provide UFRFI with written notice at least 45 days 
prior to the cancellation, non-renewal, or material change in such 
comprehensive general liability insurance; if Ixion does not obtain 
replacement insurance providing comparable coverage within such 45 day period, 
UFRFI shall have the right to terminate this Agreement.

     8.5     Ixion shall maintain such comprehensive general liability 
insurance beyond the expiration or termination of this Agreement during (a) 
the period that any product, process, or service, relating to, or developed 
pursuant to, this Agreement is being commercially distributed or sold (other 
than for the purpose of obtaining regulatory approvals) by Ixion or by a 
licensee, affiliate, or agent of Ixion, and (b) a reasonable period after the 
period referred to in section 8.5 (a) above, which in no event shall be less 
than 15 years.

     8.6     In the event any such action is commenced or claim made or 
threatened against UFRFI or other Indemnitees as to which Ixion is obligated 
to indemnify it or them or hold it or them harmless, UFRFI or the other 
Indemnitees shall promptly notify Ixion of such event.  Ixion shall assume the 
defense of, and may settle, that part of any such claim or action or made 
against UFRFI (or other Indemnitee) which relates to Ixion's indemnification 
and Ixion may take such other steps as may be necessary to protect itself.  
Ixion shall not be liable to UFRFI or other Indemnitees on account of any 
settlement of any such claim or litigation affected without Ixion's consent.  
The right of Ixion to assume the defense of any action shall be limited to 
that part of the action commenced against UFRFI or other Indemnitees which 
relates to Ixion's obligation of indemnification.

          ARTICLE IX - DISCLAIMER OF WARRANTIES

9.1     EXCEPT AS OTHERWISE EXPRESSLY SET FORTH IN THIS AGREEMENT, UFRFI MAKES 
NO REPRESENTATIONS AND EXTENDS NO WARRANTIES OF ANY KIND, EITHER EXPRESS OR 
IMPLIED, INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY, FITNESS 
FOR A PARTICULAR PURPOSE, AND VALIDITY OF PATENT RIGHTS CLAIMS, ISSUED OR 
PENDING.

9.2     UFRFI DOES NOT WARRANT THE VALIDITY OF THE PATENT RIGHTS LICENSED 
HEREUNDER AND MAKES NO REPRESENTATION WHATSOEVER WITH REGARD TO THE SCOPE OF 
THE LICENSED PATENT RIGHTS OR THAT SUCH PATENT RIGHTS MAY BE EXPLOITED BY 
IXION OR ANY AFFILIATE OR SUBLICENSEE WITHOUT INFRINGING OTHER PATENTS.

        ARTICLE X - EXPORT CONTROLS

     Ixion hereby agrees that it shall not sell, transfer, export or reexport 
any Licensed Products, Licensed Processes, Licensed Know-How, or related 
information in any form, or any direct products of such information, except in 
compliance with all applicable laws, including the export laws of any U.S. 
government agency and any regulations thereunder, and will not sell, transfer, 
export or reexport any such Licensed Products, Licensed Processes, Licensed 
Know-How, or information to any persons or any entities with regard to which 
there exist grounds to suspect or believe that they are violating such laws.  
Ixion shall be solely responsible for obtaining all licenses, permits, or 
authorizations required from the United States and any other government for 
any such export or reexport.  To the extent not inconsistent with this 
Agreement, UFRFI agrees to provide Ixion with such assistance as it may 
reasonably request in obtaining such licenses, permits, or authorization.

      ARTICLE XI - NON-USE OF NAMES

     11.1     Ixion shall not use the names of the University or UFRFI nor of 
any of either institution's employees, nor any adaptation thereof, in any 
advertising, promotional, or sales literature without prior written consent 
obtained from UFRFI in each case (such consent not to be unreasonably 
withheld), except that Ixion may state that it is licensed by UFRFI under one 
or more of the patents and/or applications comprising the Patent Rights.  
Requests for consent from UFRFI or the University shall be sent to the 
President of UFRFI with a copy to the Director of the Office of Patent, 
Copyright and Technology Licensing. UFRFI and the University shall not use the 
name of Ixion or its employees, directors, or agents, in any press or 
publicity release without prior written consent from the Chairman or President 
of Ixion (such consent not to be unreasonably withheld), except that the 
University or UFRFI may state that Ixion has been licensed under one or more 
of the patents or applications comprising the Patent Rights. Notwithstanding 
the foregoing, the University and UFRFI consent to references to them pursuant 
to any requirements of applicable law or governmental regulations, provided 
that, in the event of any such disclosure, Ixion shall afford UFRFI or the 
University the prior opportunity to review the text of such disclosure.  Ixion 
shall use its best efforts to comply with any reasonable requests by the 
University or UFRFI regarding changes.

     11.2     Where consent of a party is required under this Article XI, such 
consent shall be deemed granted if no written objection (or oral objection, 
confirmed immediately in writing) is received by the requesting party on or 
before the tenth calendar day following the date a written request for consent 
was received by the requested party.  For the purposes of this Article XI 
only, a item shall be deemed received as follows: (a) if hand delivered, upon 
delivery; (b) if sent by electronic mail, upon confirmation by the sending 
carrier that the message was deposited to the addressee's mailbox; (c) if sent 
by registered mail, return receipt requested, upon signing by the receiving 
party; or (d) if sent by ordinary mail in the United States, postage prepaid, 
and addressed as set forth in Article XIV, on the fifth calendar day after 
deposit in the mail. 

           ARTICLE XII - ASSIGNMENT

     This Agreement is not assignable and any attempt to do so shall be void.

         ARTICLE XIII - TERMINATION

     13.1     If Ixion shall cease to carry on its business, this Agreement 
shall terminate upon notice by UFRFI.

     13.2     Should Ixion fail to pay UFRFI royalties due and payable 
hereunder, UFRFI shall have the right to terminate this Agreement on 60 days' 
notice, unless Ixion shall pay UFRFI within the 60-day period, all such 
royalties and interest due and payable.  Upon the expiration of the 60-day 
period, if Ixion shall not have paid all such royalties and interest due and 
payable, the rights, privileges, and license granted hereunder shall 
terminate.

     13.3     Upon any material breach or default of this Agreement by Ixion, 
other than those occurrences set out in sections 13.1 and 13.2 above, which 
shall always take precedence in that order over any material breach or default 
referred to in this section 13.3, UFRFI shall have the right to terminate this 
Agreement and the rights, privileges, and license granted hereunder by 90 
days' notice to Ixion.  Such termination shall become effective unless Ixion 
shall have cured any such breach or default prior to the expiration of the 90-
day period.

     13.4     Ixion shall have the right to terminate this Agreement at any 
time 
on 90 days' written notice to UFRFI, and upon payment of all amounts due UFRFI 
through the effective date of the termination.

     13.5     Upon termination of this Agreement for any reason, nothing 
herein 
shall be construed to release either party from any obligation that matured 
prior to the effective date of such termination.  Ixion and any sublicensee 
thereof may, however, after the effective date of such termination, sell all 
Licensed Products, and complete Licensed Products in the process of 
manufacture at the time of such termination and sell the same, provided that 
Ixion shall pay to UFRFI the royalties thereon as required by Article IV of 
this Agreement and shall submit the reports required by Article V hereof on 
the sales of Licensed Products.

     13.6     Upon termination of this Agreement for any reason, any 
sublicense 
not then in default shall continue in full force and effect except that UFRFI 
shall be substituted in place of the sublicensor; provided, however, that the 
extent of UFRFI's obligations under such sublicense shall be consistent with 
(and not exceeding) its obligations under this Agreement.

     13.7     Bankruptcy.

          (a)     Notice of Assumption or Rejection.

               (i)     In the event that either party files or has filed against
 it a petition under the Federal Bankruptcy Code (11 U.S.C. Sec. 1, et seq.) 
(the Bankruptcy Code"), is adjudged bankrupt, or files or has filed against 
it a petition for reorganization or arrangement under any law relating to 
bankruptcy or similar laws for the protection of debtors, whether under the 
laws of the United States and its political subdivisions or otherwise, such 
party shall (1) notify the                other party t

               (ii)     If such party does not:  (1) within 
thirty (30) days after the occurrence of any of the 
foregoing events, notify the other party of its 
assumption or rejection of this Agreement or file the 
petition, or (2) thereafter diligently take all other 
action necessary for the approval of the foregoing 
ty does not:  (1) within 
thirty (30) days after the occurrence of any of the 
foregoing events, notify the other party of its 
assumption or rejection of this Agreement or file the 
petition, or (2) thereafter diligently take all other 
action necessary for the approval of the foregoing 
petition or of such assumption or rejection, such 
party shall be deemed to have rejected this Agreement.  
Each party acknowledges that, for purposes of Section 
365 of the Bankruptcy Code and similar provisions of 
any other or future similar laws relating to any 
party's assumption or rejection of any executory 
contract, a period of 30 days after the date of any 
filing or adjudication described above shall 
constitute a reasonable time in which such party shall 
assume or reject this Agreement and a party shall be 
deemed to have not diligently taken all action 
necessary for the approval of the foregoing petition 
or of such assumption or rejection if such petition, 
assumption or rejection is not approved by the 
appropriate court within 60 days after the filing of 
the petition for such assumption or rejection.

          (b)     Conditions to Assumption.  

               No election by any party, or any successor-in-
interest to such party, to assume this Agreement as 
contemplated by Section (a) above shall be effective unless 
each of the following conditions, each of which each party 
acknowledges is commercially reasonable in the context of a 
bankruptcy or similar proceeding, has been satisfied by such 
party and each of the other parties has acknowledged such 
satisfaction in writing:

               (1)     Cure.  Such party has cured, or has 
provided the other party adequate assurances that:

                    (A)     Monetary Defaults.  
Within ten days from the date of such assumption 
such party will cure all monetary defaults under 
this Agreement; and

                    (B)     Non-Monetary Defaults.  
Within 30 days from the date of such assumption 
such party will cure all non-monetary defaults 
under this Agreement.

               (2)     Pecuniary Loss.  Such party has 
compensated or has provided to the other party 
adequate assurances that within ten days from the date 
of assumption the other party will be compensated for 
any pecuniary loss incurred by the party arising from 
any default of such party under this Agreement prior 
to the assumption.

               (3)     Future Performance.  Such party has 
provided the other party with adequate assurances of 
the future performance of such party's obligations 
under this Agreement.

          (c)     Termination.  

               This Agreement shall terminate upon the 
rejection of this Agreement as contemplated by this Section 
by any party or successor-in-interest thereto.


          (d)     No Transfer.  

               Neither any party's interest in this Agreement 
nor any portion thereof shall pass to any trustee, receiver, 
or assignee for the benefit of creditors, or any other 
person or entity or otherwise by operation of law under the 
Bankruptcy Code or the insolvency laws of any state having 
jurisdiction of the person or property of such party unless 
the other party shall consent to such transfer in writing.

           ARTICLE XIV - PAYMENTS, NOTICES AND OTHER COMMUNICATIONS

     Any payment, notice or other communication pursuant to this Agreement 
shall be sufficiently made or given on the date of mailing if sent to such 
party by certified first class mail, postage prepaid, addressed to it at its 
address below or as it shall designate by written notice given to the other 
party:

     In the case of UFRFI:

          President
          University of Florida Research Foundation, Inc.
          223 Grinter Hall
          Gainesville, Florida  32611

     With a copy to:

          Director
          Office of Patent, Copyright and Technology Licensing
          186 Grinter Hall
          Gainesville, Florida  32611
     All payments to:

          Director
          Office of Patent, Copyright and Technology Licensing
          186 Grinter Hall
          Gainesville, Florida  32611

     PLEASE MAKE ALL CHECKS PAYABLE TO:

          University of Florida Research Foundation, Inc.
          223 Grinter Hall
          Gainesville, Florida  32611


     In the case of Ixion:

          President
          Ixion Biotechnology, Inc.
          One Progress Blvd., Box 26
          Alachua, FL 32615

ARTICLE XV - MISCELLANEOUS PROVISIONS

     15.1     This Agreement shall be construed, governed, interpreted, and 
applied in accordance with the laws of the State of Florida, except that 
questions affecting the construction and effect of any patent shall be 
determined by the law of the country in which the patent was granted.

     15.2     The parties hereto acknowledge that this Agreement sets forth 
the 
entire agreement and understanding of the parties hereto as to the subject 
matter hereof, and shall not be subject to any change or modification except 
by the execution of a written instrument subscribed to by the parties hereto.

     15.3     The provisions of this Agreement are severable, and in the event 
that any provisions of this Agreement shall be determined to be invalid or 
unenforceable under any controlling body of the law, such invalidity or 
unenforceability shall not in any way affect the validity or enforceability of 
the remaining provisions hereof.

     15.4     Ixion agrees to mark the Licensed Products sold in the United 
States with all applicable United States patent numbers.  All Licensed 
Products shipped to or sold in other countries shall be marked in such a 
manner as to conform with the patent laws and practice of the country of 
manufacture or sale.

     15.5     The failure of either party to assert a right hereunder or to 
insist upon compliance with any term or condition of this Agreement shall not 
constitute a waiver of that right or excuse a similar subsequent failure to 
perform any such term or condition by the other party.

     15.6     (a) Anything in this Agreement to the contrary notwithstanding, 
any and all knowledge, know-how, practices, process or other information of 
any kind and in any form (hereinafter referred to as "Confidential 
Information") disclosed or submitted, either orally, in writing or in other 
tangible or intangible form which is designated as Confidential Information, 
to either party by the other shall be received and maintained by the receiving 
party in strict confidence and shall not be disclosed to any third party, 
except that Ixion may disclose Confidential Information (pursuant to written 
confidentiality agreements) to its lawyers, accountants, advisors, investors, 
and potential investors.  Furthermore, neither party shall use the said 
Confidential Information for any purpose other than those purposes specified 
in this Agreement.  The parties may disclose Confidential Information to the 
minimum number of its employees reasonably requiring access thereto for the 
purposes of this Agreement provided, however, that prior to making any such 
disclosures each such employee shall be apprised of the duty and obligation to 
maintain Confidential Information in confidence and not to use such 
information for any purpose other than in accordance with the terms and 
conditions of this Agreement.

          (b)   Nothing contained herein will in any way restrict or impair 
either parties right to use, disclose, or otherwise deal with any Confidential 
Information which at the time of its receipt:

          (i)  Is generally available in the public domain, or thereafter 
becomes available to the public through no act of the receiving party; or

          (ii)  Was independently known prior to receipt thereof, or made 
available to such receiving party as a matter of lawful right by a third 
party.

     IN WITNESS WHEREOF, the parties have hereunto set their hands and seals 
and duly executed this Agreement on the day and year set forth below.


University of Florida Research Foundation, Inc.


By                                                                 Dated:



Ixion Biotechnology, Inc.

By                                                                   Dated:
     January 11, 1995
   Weaver H. Gaines
   Chairman and Chief Executive Officer



Acknowledged and Understood:


                                                             
Ammon B. Peck, Ph. D.





                                  APPENDIX A


UF Case No. UF# 0973 

"Reducing Oxalate Poisoning in Vertebrates Using Genetically Engineered 
Organisms Expressing Cloned Oxalate Degrading Enzymes"

UF Case No. UF# 1203

"Oxalate Diagnostic Kit and Formyl-CoA Transferase Gene from Oxalobacter 
Formigenes"

U.S.S.N.  08/262,424  "Materials and Methods for Detection of Oxalate"

By Ammon B. Peck, Ph. D.

Filed on June 20, 1994




                                  APPENDIX B





Foreign countries in which Patent Rights shall be filed, prosecuted and 
maintained in accordance with Article VI:

For UF Case No. UF# 1203 and Case No. UF# 0973

     India
     No other countries



                               [Ixion Letterhead]


                         December 20, 1995

Chris D. McKinney, PH. D.
Director, Office of Technology Licensing
186 Grinter Hall
Gainesville, FL 32611-2037

                          AMENDMENT NUMBER ONE
                   Re: Oxalate Patent Licenses between UFRFI and Ixion

Dear Chris:

     I refer to the Patent License Agreement between the University of Florida
Research Foundation, Inc., ("UFRFI") and Ixion Biotechnology, Inc. ("Ixion" or
the "Company"), dated January 11, 1995, relating to USSN 08/262,424 (the 
"Oxalate License").  Such license requires Ixion to develop a working model
of an urine oxalate detection kit by January 11, 1996.  We have determined that
a more promising product is a molecular probe to detect the presence or absence
of Oxalobacter formigenes in the human gut.  We expect to have a working model
of that probe by January 11, 1996, and would like to substitute that probe for
the urine oxalate kit referred to in Section 3.2(b) of the Oxalate License.

     If this meets with your approval, please sign and return a copy of this
letter.

     Best wishes for the holiday season.

                                  Sincerely yours,
                                  /S/
                                  Weaver H. Gaines

Accepted and agreed to:

/s/ Chris D. McKinney
_____________________


NOTE: Certain portions of this document have been omitted based on a request
      for confidential treatment.  The non-public information has been filed
      with the Securities and Exchange Commission.  Omitted portions are
      designated with asterisks ("*").
     

This  Amendment No. 2 dated October 9, 1996,  is between the University 
of Florida Research Foundation, Inc., a not-for-profit corporation duly 
organized and existing under the laws of the State of Florida and having its 
principal office at 223 Grinter Hall, Gainesville, Florida, 32611-2037  
("UFRFI"), and Ixion Biotechnology, Inc., a corporation duly organized under 
the laws of  Delaware, and having its principal office at 12085 Research 
Drive, Alachua, Florida 32615 ("Ixion").


     WITNESSETH

WHEREAS, UFRFI and Ixion entered into a License Agreement dated January 
11, 1995 relating to UF Case No. 1203 "Oxalate Diagnostic Kit and Formyl-CoA 
Transferase Gene from Oxalobacter Formigenes," UF Case No. UF#-0973 "Reducing 
Oxalate Poisoning in Vertebrates Using Genetically Engineered Organisms 
Expressing Cloned Oxalate Degrading Enzymes," and the parent patent 
application "Materials and Methods for Detection of Oxalate," USSN 08/262,424, 
filed June 20, 1994, and

WHEREAS, UFRFI and Ixion amended Section 3.2(b) of such License 
Agreement on December 20, 1995, to substitute the development of a working 
model of a molecular probe to detect Oxalobacter formigenes,  rather than a 
working model of a urine oxalate development kit, as part of Ixion's diligence 
obligation (such License Agreement as amended being herein referred to as the 
"License Agreement"); and 

WHEREAS, UFRFI and Ixion desire to further amend the License Agreement 
to the benefit of both parties; 

NOW, THEREFORE, in consideration of the premises and the mutual 
covenants contained herein the parties agree to Amendment No. 2 as follows:

1.  Appendix A is amended to read, in its entirety, as attached Appendix 
A:

2.  Appendix B is amended to read, in its entirety, as attached Appendix 
B:
     
3.  Section 1.6 is amended by deleting the words "and its sublicensees'" 
such that section 1.6 reads as follows:

1.6     "Net Sales" means Ixion's gross sales from the sale or 
lease of Licensed Products and Licensed Processes produced hereunder 
less the sum of the following:

(a)     discounts allowed in amounts customary in the trade and 
brokers' or agents' commissions, if any, allowed and paid to 
independent parties in arms-length transactions;

(b)     excise, value-added, or sales taxes, tariff duties or use 
taxes directly imposed and with reference to particular 
sales;

(c)     outbound transportation prepaid or allowed; 

(d)     amounts allowed or credited on returns; and

(e)     packing costs and insurance costs if itemized separately.

No deductions shall be made for commissions paid to individuals  
regularly employed by Ixion and on its payroll, or for cost of 
collections.  Licensed Products shall be considered "sold" when  
invoiced.

3.  Section 4.1(c) is amended by deleting the words "or its 
sublicensees" such that section 4.1(c) reads as follows:

(c)     A Running Royalty in an amount equal to ******** of 
the Net Sales of the Licensed Products or Licensed Processes 
used, leased, or sold by or for Ixion; and


4.  A new section 4.1 (d) is added as follows:

(d)     Sublicense Royalty in an amount equal to ******** 
******** of the sublicense revenue received by Ixion.  
Sublicense revenue received by Ixion shall mean revenue in 
the form of license fees, royalties, or other direct 
consideration (such as milestone payments made by a 
sublicensee), but not research support or collaboration fees 
from sublicensees.


IN WITNESS WHEREOF, the parties have hereunto set their hands and 
seals and duly executed this Agreement as of the day and year first set forth 
above.


University of Florida Research Foundation, Inc.       Ixion Biotechnology, 
Inc.



By                                                     By       
Dr. Karen A. Holbrook                                  Weaver H. Gaines
President                                              Chairman and Chief 
                                                       Executive Officer



      APPENDIX A



UF Case No. UF# 0973
"Reducing Oxalate Poisoning in Vertebrates Using Genetically Engineered 
Organisms Expressing Cloned Oxalate Degrading Enzymes"

UF Case No. UF# 1203
"Oxalate Diagnostic Kit and Formyl-CoA Transferase Gene from Oxalobacter 
Formigenes" 

UF Case No. UF# 1447
"Materials and Methods for Detection of Oxalate"

UF Case No. UF# 1458
"Materials and Methods for Detection of Oxalate"

UF Case No. UF# [to be assigned]
"Materials and Methods for Detection of Oxalobacter Formigenes"

 USSN 08/262,424 "Materials and Methods for Detection of Oxalate"
By Ammon B. Peck, Ph.D.
 Filed on June 20, 1994

USSN 08/464,147 "Materials and Methods for Detection of Oxalate"
By Ammon B. Peck, Ph.D.
Filed on June 5, 1995

USSN 08/493,197 "Materials and Methods for Detection of Oxalate"
By Ammon B. Peck, Ph.D.
Filed on June 20, 1995

USSN 08/[to be assigned] "Materials and Methods for Detection of Oxalobacter"
Saliwanchik & Saliwanchik Docket Number UF 145C2
By Ammon B. Peck, Ph.D.
Filed on September 27, 1996


     APPENDIX B

Foreign countries in which Patent Rights shall be file, prosecuted and 
maintained in accordance with Article VI:

For UF Case No. UF# 1203 and Case No. UF# 0973

India
No other countries

For UF Case No. UF# 1458

PCT Appl. No. US95/07844
Filed June 20, 1995
Publ. No. WO 95/35377

All subsequent national and PCT filings for patent applications appearing in 
Appendix A.




NOTE: Certain portions of this document have been omitted based on a request
      for confidential treatment.  The non-public information has been filed
      with the Securities and Exchange Commission.   Omitted portions are
      designated with asterisks ("*").
     








                           Patent License Agreement
                           With Research Component







                  University of Florida Research Foundation 
                                     and
                          Ixion Biotechnology, Inc.


                                February 1995





UF Case No. UF# -1256 "In vitro-grown Islets of Langerhan for curing diabetes"

Patent Application "In Vitro Growth of Functional Islets of Langerhan,"  USSN 
08/234,071, filed April 28, 1994


                           PATENT LICENSE AGREEMENT
                           WITH RESEARCH COMPONENT


                              TABLE OF CONTENTS



ARTICLE I - DEFINITIONS     1

ARTICLE II - GRANT     4

ARTICLE III - DUE DILIGENCE     5

ARTICLE IV - ROYALTIES     5

ARTICLE V - REPORTS AND RECORDS     7

ARTICLE VI - PATENT PROSECUTION     8

ARTICLE VII - INFRINGEMENT     8

ARTICLE VIII - PRODUCT LIABILITY     10

ARTICLE IX - DISCLAIMER OF WARRANTIES     11

ARTICLE X - EXPORT CONTROLS     11

ARTICLE XI - NON-USE OF NAMES     11

ARTICLE XII - ASSIGNMENT     12

ARTICLE XIII - TERMINATION     12

ARTICLE XIV - PAYMENTS, NOTICES AND OTHER COMMUNICATIONS     15

ARTICLE XV - MISCELLANEOUS PROVISIONS     16









                                   PREAMBLE

     This Agreement is made this 17th day of February, 1995, (the "Effective 
Date") between the University of Florida Research Foundation, Inc., a not-for-
profit corporation duly organized and existing under the laws of the State of 
Florida and having its principal office at 223 Grinter Hall, Gainesville, 
Florida, 32611-2037  ("UFRFI"), and Ixion Biotechnology, Inc., a corporation 
duly organized under the laws of  Delaware, and having its principal office at 
One Progress Blvd., Box 26, Alachua, Florida 32615 ("Ixion").

                                  WITNESSETH

     WHEREAS, UFRFI is the owner of certain Patent Rights by assignment from 
the University of Florida (the "University") relating to UF Case No. UF# -1256 
"In vitro-grown Islets of Langerhan for curing diabetes," and has the right to 
grant licenses under said Patent Rights, subject only to a royalty-free, 
nonexclusive license heretofore granted to the United States Government;

     WHEREAS, UFRFI desires to have the Patent Rights utilized in the public 
interest and is willing to grant a license thereunder;

     WHEREAS, Ixion has represented to UFRFI to induce UFRFI to enter into 
this Agreement, that Ixion is prepared to undertake the development, 
production, manufacture, marketing, and sale of products similar to the 
Licensed Products and/or the use of the Licensed Processes and that it shall 
commit itself to a thorough, vigorous, and diligent program of exploiting the 
Patent Rights commercially so that public utilization and royalty income to 
UFRFI shall result;

     WHEREAS, Ixion desires to obtain a license under the Patent Rights upon 
the terms and conditions of this Agreement; and

     WHEREAS, Ixion has certain additional research it desires which the 
parties agree should be conducted by the University;

     NOW, THEREFORE, in consideration of the premises and the mutual 
covenants contained herein the parties agree as follows:

            ARTICLE I - DEFINITIONS

     The following words and phrases have the following meanings:

     1.1     "Inventor" means Ammon B. Peck, Ph.D.

     1.2     "Ixion" means any of the following:

          (a)     a related company of Ixion, the voting stock of 
which is directly or indirectly at least 50% owned or 
controlled by Ixion;

          (b)     an organization which directly or indirectly 
controls more than 50% of the voting stock of Ixion; and

          (c)     an organization, the majority ownership of which 
is directly or indirectly common to the ownership of Ixion.

     1.3     "Licensed Know-How" means any technical data, information, or 
knowledge within the knowledge and possession of the Inventor on the Effective 
Date which is incorporated in or becomes part of the Patent Rights.
     
     1.4     "Licensed Product" means any product or part thereof which:

          (a)     is covered in whole or in part by an issued, 
unexpired claim or a pending claim contained in the Patent 
Rights in the country in which any Licensed Product is made, 
used, or sold;

          (b)     is manufactured by using a process which is 
covered in whole or in part by an issued, unexpired claim or 
a pending claim contained in the Patent Rights in the 
country in which any Licensed Process is used or in which 
such product or part thereof is used or sold;

          (c)     is derived from Patent Rights, Licensed Know-
How, or trade secrets related to or described in Patent 
Rights; or

          (d)     is sold, manufactured, or used in any country 
under this Agreement.

     1.5     "Licensed Process" means any process which: 

          (a)     is covered in whole or in part by an issued, 
unexpired claim or a pending claim contained in the Patent 
Rights;

          (b)     is derived from Patent Rights, Licensed Know-
How, or trade secrets related to or described in Patent 
Rights; or

          (c)     is used in any country under this Agreement.

     1.6     "Net Sales" means Ixion's, and its sublicensees' gross sales from 
the sale or lease of Licensed Products and Licensed Processes produced 
hereunder less the sum of the following:

          (a)     discounts allowed in amounts customary in the 
trade and brokers' or agents' commissions, if any, allowed 
and paid to independent parties in arms-length transactions;

          (b)     excise, value-added, or sales taxes, tariff 
duties or use taxes directly imposed and with reference to 
particular sales;

          (c)     outbound transportation prepaid or allowed; 

          (d)     amounts allowed or credited on returns; and

          (e)     packing costs and insurance costs if itemized 
separately.

No deductions shall be made for commissions paid to individuals  regularly 
employed by Ixion and on its payroll, or for cost of collections.  Licensed 
Products shall be considered "sold" when  invoiced.

     1.7     "Patent Rights" means all of the following UFRFI intellectual 
property:

          (a)     the United States and foreign patents or patent 
applications listed in Appendices A and B;

          (b)     United States and foreign patents issued from 
the applications listed in Appendices A and B and from 
divisionals and continuations of these applications;

          (c)     claims of U.S. and foreign continuation-in-part 
applications, and of the resulting patents, which are 
directed to subject matter specifically described in the 
U.S. and foreign applications listed in Appendices A and B;

          (d)     claims of all foreign patent applications, and 
of the resulting patents, which are directed to subject 
matter specifically described in the United States patents 
and/or patent applications described in (a), (b), or (c) 
above; and

          (e)     any reissues of United States patents described 
in (a), (b), (c), or (d) above.

     1.8     "Project Work" means the research work described in the Research 
Support Agreement.
     
     1.9     "Research Support Agreement" means that agreement attached hereto 
as Exhibit C, with its associated terms and conditions.

     1.10     "Territory" means all the countries of the world.

     1.11     "University Inventions" means individually and collectively all 
inventions, improvements, or discoveries patentable or unpatentable, which are 
conceived or made solely by one or more employees of the University, in 
performance of the Project Work.  All rights and title to University 
Inventions developed under the Research Support Agreement belong to the 
University and are subject to the terms of such Research Support Agreement.  
For the purposes of this section, the "making" of inventions shall be governed 
by U.S. laws of inventorship.

     1.12     "University Patents" means collectively and individually any and 
all United States and foreign patent applications and any and all issued 
United States Letters Patents and foreign patents owned by the University for 
University Inventions derived during Project Work under the Research Support 
Agreement.

                 ARTICLE II - GRANT

     2.1     UFRFI grants to Ixion the exclusive right and license to make, 
have made, use, lease, and sell the Licensed Products, and to practice the 
Licensed Processes and the Licensed Know-How, in the Territory to the end of 
the term for which the Patent Rights are granted unless sooner terminated 
according to the terms hereof.  

     2.2     UFRFI shall not grant any other license to make, have made, use, 
lease, or sell Licensed Products or to utilize Licensed Processes during the 
period of time commencing with the Effective Date of this Agreement and 
terminating with the expiration or termination of this Agreement.

     2.3     UFRFI reserves the right to practice under the Patent Rights for 
its own noncommercial research purposes.

     2.4     Ixion may sublicense others under this Agreement.  Each 
sublicense 
shall be consistent with the terms of this Agreement. 

     2.5     Any sublicenses granted by Ixion shall provide that the 
obligations to UFRFI of this Agreement shall be binding upon the sublicensee 
as if it were a party to this Agreement.  Ixion shall attach copies of this 
Agreement to sublicense agreements. 

     2.6     Ixion shall forward to UFRFI a copy of any sublicense agreement 
within 30 days of its execution and further shall forward to UFRFI annually a 
copy of such reports received by Ixion from its sublicensees during the 
preceding twelve-month period under the sublicenses as shall be pertinent to a 
royalty accounting under said sublicenses.
     2.7     The license granted hereunder shall not be construed to confer 
any 
rights upon Ixion by implication, estoppel, or otherwise as to any technology 
not specifically set forth herein.

     2.8     Ixion  shall not receive from sublicensees anything of value in 
lieu of cash payments in consideration for any sublicense under this 
Agreement, without the express prior written permission of UFRFI.

     2.9     Licensed Products leased or sold in the United States and covered 
by Patent Rights or other intellectual property rights that are subject to the 
non-exclusive royalty-free license to the United States government will be 
manufactured substantially in the United States.

     2.10     Ixion shall abide by all rights and limitations of U.S. Code, 
Title 35, Chapter 38, and implementing regulations thereof, for all patent 
applications and patents invented in whole or in part with federal funding.


        ARTICLE III - DUE DILIGENCE

     3.1     Ixion shall use its best efforts to bring one or more Licensed 
Products or Licensed Processes to market through a thorough, vigorous, and 
diligent program for exploitation of the Patent Rights to attain 
commercialization of Licensed Products and Licensed Processes.

     3.2     In addition, Ixion shall adhere to the following milestones:

          (a)     Ixion shall deliver to UFRFI on or before a date 
90 days from the Effective Date a business plan for further 
research into the development of a product relating to in 
vitro grown islets of Langerhan.  The business plan (or 
extract from the business plan) shall show for the 
forthcoming fiscal year  the amount of money, number and 
kind of personnel, and time budgeted for such product 
development.  Ixion shall provide similar plans or extracts 
to UFRFI on an annual basis on or before the ninetieth 
(90th) day following the close of each fiscal year.

          (b)     Ixion shall comply with the Research Support 
Agreement attached as Exhibit C.

             ARTICLE IV - ROYALTIES

     4.1     For the rights, privileges and, license granted hereunder, Ixion 
shall pay royalties to UFRFI to the end of the term of the Patent Rights or 
until this Agreement is terminated as follows:

          (a)     A License Issue Fee of an amount equal to the 
out-of-pocket costs of patenting incurred prior to the 
Effective Date, such fee to be paid within 30 days of the 
receipt of an invoice therefor by Ixion;

          (b)     An Additional License Issue Fees of ********, due 
immediately upon the execution of this Agreement.  The 
Additional License Issue Fee  shall be creditable against 
any Running Royalties subsequently due under section 4.1 (c) 
below;

          (c)     A Running Royalty in an amount equal to ********** 
of the Net Sales of the Licensed Products or 
Licensed Processes used, leased, or sold by or for Ixion or 
its sublicensees; and

          (d)     A further ******** upon the filing with the FDA 
of an application for a Product License Approval relating to 
a Licensed Product or Process, or the expiration of 24 
months from the Effective Date, whichever is later.  Such 
milestone payment is in addition to any Running Royalties 
due under section 4.1(c) above.

     4.2     No multiple royalties shall be payable because any Licensed 
Product, its manufacture, use, lease, or sale are or shall be covered by more 
than one Patent Rights patent application or Patent Rights patent licensed 
under this Agreement.

     4.3     Royalty payments shall be paid in United States dollars in 
Gainesville, Florida or at such other place as UFRFI may reasonably designate 
in writing consistent with the laws and regulations controlling in any foreign 
country.  If any currency conversion shall be required in connection with the 
payment of royalties hereunder, such conversion shall be made by using the 
exchange rate prevailing at the Chase Manhattan Bank (N.A.) on the last 
business day of the calendar quarterly reporting period to which such royalty 
payments relate.

     4.4     In the event the royalties set forth herein are higher than the 
maximum royalties permitted by the law or regulations of a particular country, 
the royalty payable for sales in such country shall be equal to the maximum 
permitted royalty under such law or regulations.  Notice of said event shall 
be provided to UFRFI.  An authorized representative of Ixion shall notify 
UFRFI, in writing, within 30 days of discovering that such royalties are 
approaching or have reached the maximum amount, and shall provide UFRFI with 
written documentation regarding the laws or regulations establishing such 
maximum.

     4.5     In the event that any taxes, withholding or otherwise, are levied 
by any taxing authority in connection with accrual or payment of any royalties 
payable by Ixion under this Agreement, and Ixion determines in good faith that 
it must pay such taxes, Ixion shall have the right to pay such taxes to the 
local tax authorities on behalf of UFRFI and payment of the net amount due 
after reduction by the amount of such taxes, shall fully satisfy Ixion's 
royalty obligations under this Agreement.  Ixion shall provide UFRFI with 
appropriate receipts or other documentation supporting such payment.  Ixion 
shall inform UFRFI in writing, within 30 days of notification that taxes will 
or have been levied by a taxing authority.

     4.6     In the event that a Licensed Product is sold in a combination 
package or kit containing other active products, then Net Sales for purposes 
of determining royalty payments on the combination package, shall be 
calculated using one of the following methods, but in no event shall the 
royalties payable to UFRFI be reduced to less than 50% of that provided for in 
Section 4.1 above:

     (a)     by multiplying the net selling price of that combination 
package by the fraction A/A+B, where A is the gross selling price, 
during the royalty-paying period in question, of the Licensed 
Product sold separately, and B is the gross selling price during 
the royalty period in question, of the other active products sold 
separately; or
     (b)     in the event that no such separate sales are made of the 
Licensed Product or any of the active products in such combination 
package during the royalty-paying period in question, Net Sales 
for the purposes of determining royalty payments, shall be 
calculated by dividing the net selling price of the combination 
package by the number of functions performed by the combination 
package sold where such package contains active agents other than 
those licensed under this Agreement.  The parties recognize that 
this provision will require consultation and that in the event a 
combination package or kit circumstance arises, the parties will 
negotiate in good faith to determine the calculation of Net Sales 
pursuant to this section.

     4.7     If it is necessary for Ixion to take any license(s) in a given 
country, under valid third-party patents which would be necessarily infringed 
by the practice of Licensed Processes or production of Licensed Products in 
that country, then Ixion can deduct up to 25% of the royalties otherwise due 
under this Agreement for Net Sales in that country, until such time as Ixion 
has recovered an amount equal to the royalties payable to such third parties.

    ARTICLE V - REPORTS AND RECORDS

     5.1     Ixion shall keep full, true, and accurate books of account 
containing all particulars that may be necessary for the purpose of showing 
the amounts payable to UFRFI hereunder.  Said books of account shall be kept 
at Ixion's principal place of business or the principal place of business of 
the appropriate division of Ixion to which this Agreement relates.  Said books 
and the supporting data shall be open at all reasonable times for three years 
following the end of the calendar year to which they pertain, to the 
inspection of UFRFI or its agents at UFRFI's expense for the purpose of 
verifying Ixion's royalty statements.

     5.2     Ixion, within 45 days after March 31, June 30, September 30, and 
December 31, of each year, shall deliver to UFRFI true and accurate reports, 
giving such particulars of the business conducted by Ixion and its 
sublicensees during the preceding three-month period under this Agreement as 
shall be pertinent to a royalty accounting hereunder.  These shall include at 
least the following:

          (a)     number of Licensed Products manufactured and 
sold;

          (b)     total billings for Licensed Products sold;

          (c)     an accounting for all Licensed Processes used or 
sold;

          (d)     deductions applicable to a determination of Net 
Sales;

          (e)     total royalties due;

          (f)     names and addresses of all sublicensees of 
Ixion; and

          (g)     a report on any patent extensions sought 
pursuant to section 6.1 hereof.

     5.3     With each such report submitted, Ixion shall pay to UFRFI the 
royalties due and payable under this Agreement.  If no royalties shall be due, 
Ixion shall so report.

     5.4  On or before the 90th day following the close of Ixion's fiscal 
year, Ixion shall provide UFRFI with Ixion's year-end balance sheet and an 
operating statement for the preceding fiscal year then ended.

     5.5     The royalty payments, license fees, and reimbursement for patent-
related expenses set forth in this Agreement shall, if overdue, bear interest 
until payment at the monthly rate of 1.0%.  The payment of such interest shall 
not foreclose UFRFI from exercising any other rights it may have as a 
consequence of the lateness of any payment.

    ARTICLE VI - PATENT PROSECUTION

     6.1     UFRFI shall apply for, seek issuance of, and maintain during the 
term of this Agreement the Patent Rights in the United States and in the 
foreign countries listed in Appendix B hereto.  The prosecution, filing, and 
maintenance of all Patent Rights patents and applications shall be the primary 
responsibility of UFRFI; provided, however, Ixion shall have reasonable 
opportunities to advise UFRFI and shall cooperate with UFRFI in such 
prosecution, filing, and maintenance.  Ixion shall seek patent extension for 
patents licensed under the Patent Rights in the United States and the foreign 
countries listed in Appendix B, under such applicable laws and regulations 
throughout such countries, where such patent extension rights are available 
currently or are available in the future.

     6.2     Payment of all fees and costs relating to the filing, 
prosecution, 
and maintenance of the Patent Rights shall be the responsibility of Ixion  
after the Effective Date.  UFRFI shall bill Ixion for these costs and fees.
     
         ARTICLE VII - INFRINGEMENT

     7.1     Ixion shall inform UFRFI promptly in writing of any alleged 
infringement of the Patent Rights by a third party and of any available 
evidence thereof.

     7.2     During the term of this Agreement, UFRFI shall have the right, 
but 
shall not be obligated, to prosecute at its own expense any such infringements 
of the Patent Rights.  If UFRFI prosecutes any such infringement, Ixion agrees 
that UFRFI may include Ixion as a co-plaintiff in any such suit, without 
expense to Ixion.  The total cost of any such infringement action commenced or 
defended solely by UFRFI shall be borne by UFRFI and UFRFI shall keep any 
recovery or damages for past infringement derived therefrom.

     7.3     If within six months after having been notified of any alleged 
infringement or such shorter time proscribed by law, UFRFI shall have been 
unsuccessful in persuading the alleged infringer to desist or shall not have 
brought and shall not be diligently prosecuting an infringement action, or if 
UFRFI shall notify Ixion at any time prior thereto of its intention not to 
bring suit against any alleged infringer, then, and in those events only, 

     (a)     Ixion shall have the right, but shall not be obligated, to 
prosecute at its own expense any infringement of the Patent Rights 
(keeping any recovery or damages for past infringements derived 
therefrom), and Ixion may, for such purposes, use the name of 
UFRFI as co-plaintiff; provided, however, that such right to bring 
an infringement action shall remain in effect only for so long as 
the license granted herein remains exclusive.  No settlement, 
consent judgment, or other voluntary final disposition of the suit 
may be entered into without the consent of UFRFI, which consent 
shall not unreasonably be withheld.  Ixion shall indemnify UFRFI 
against any order for costs that may be made against UFRFI in such 
proceedings.

     (b)     Payments which are earned under Article IV hereof shall be 
waived so long as any such infringement which the parties agree in 
good faith is material continues, such waiver not to exceed 50% of 
the royalties payable hereunder; provided, however, that such 
payments shall not be so waived so long as at least one suit or 
action is being prosecuted by UFRFI for infringement of a patent 
covering the Patent Rights.

     7.4     If Ixion has brought a suit pursuant to section 7.3 above, it 
shall have the right for such purpose to join UFRFI as a co-plaintiff at 
Ixion's expense.  UFRFI independently shall have the right to join any such 
suit or action brought by Ixion, and, in such event, shall pay one-half of the 
cost of such suit or action from the date of joining.  Any damages recovered 
by a suit or action in which UFRFI has paid its share of costs shall be first 
used to reimburse each party hereto for the cost of such suit or action 
(including attorney's fees) actually paid by each party hereto as the case may 
be, then to reimburse UFRFI for any payments waived under this Section 7.4, 
and the residue, if any, shall be divided equally between the parties hereto.

     7.5     In the event that a declaratory judgment action alleging 
invalidity or noninfringement of any of the Patent Rights shall be brought 
against Ixion, UFRFI, at its option, shall have the right, within 30 days 
after commencement of such action, to intervene and take over the sole defense 
of the action at its own expense.

     7.6     In any infringement suit as either party may institute to enforce 
the Patent Rights pursuant to this Agreement, the other party hereto shall, at 
the request and expense of the party initiating such suit, cooperate in all 
respects and, to the extent possible, have its employees testify when 
requested and make available relevant records, papers, information, samples, 
specimens, and the like.

   ARTICLE VIII - PRODUCT LIABILITY

     8.1     Ixion shall at all times during the term of this Agreement and 
thereafter, indemnify, defend, and hold UFRFI and the University, their 
trustees, officers, employees, and affiliates (the "Indemnitees"), harmless 
against all claims and expenses, including legal expenses and reasonable 
attorneys' fees, whether arising from a third party claim or resulting from 
UFRFI's enforcing this indemnification clause against Ixion, or arising out of 
the death of or injury to any person or persons or out of any damage to 
property and against any other claim, proceeding, demand, expense, or 
liability of any kind whatsoever resulting from the production, manufacture, 
sale, use, lease, consumption, or advertisement of the Licensed Products 
and/or Licensed Processes or arising from any right or obligation of Ixion 
hereunder.  This indemnification shall not apply to any liability, damage, 
loss, or expense to the extent that it is attributable to the negligence or 
intentional wrongdoing of the Indemnitees.

     8.2     Ixion shall, at its own expense, provide attorneys reasonably 
acceptable to UFRFI to defend against any actions brought or filed against any 
party indemnified hereunder with respect to the subject of indemnity contained 
herein, whether such actions are rightfully brought.

     8.3     At such time as any product, process, or service relating to, or 
developed pursuant to, this Agreement is being commercially distributed or 
sold (other than for the purpose of obtaining regulatory approvals) by Ixion 
or by a licensee, affiliate, or agent of Ixion, Ixion shall, at its sole cost 
and expense, procure and maintain policies of comprehensive general liability 
insurance naming the Indemnitees as additional insureds.  Such comprehensive 
general liability insurance shall provide (a) product liability coverage, and 
(b) broad form contractual liability coverage for Ixion's indemnification 
under sections 8.1 and 8.2 above.  If Ixion elects to self-insure, such self-
insurance program must be acceptable to UFRFI.  

     8.4     Ixion shall provide UFRFI with written evidence of such insurance 
upon request, and shall provide UFRFI with written notice at least 45 days 
prior to the cancellation, non-renewal, or material change in such 
comprehensive general liability insurance; if Ixion does not obtain 
replacement insurance providing comparable coverage within such 45 day period, 
UFRFI shall have the right to terminate this Agreement.

     8.5     Ixion shall maintain such comprehensive general liability 
insurance beyond the expiration or termination of this Agreement during (a) 
the period that any product, process, or service, relating to, or developed 
pursuant to, this Agreement is being commercially distributed or sold (other 
than for the purpose of obtaining regulatory approvals) by Ixion or by a 
licensee, affiliate, or agent of Ixion, and (b) a reasonable period after the 
period referred to in section 8.5 (a) above, which in no event shall be less 
than 15 years.

     8.6     In the event any such action is commenced or claim made or 
threatened against UFRFI or other Indemnitees as to which Ixion is obligated 
to indemnify it or them or hold it or them harmless, UFRFI or the other 
Indemnitees shall promptly notify Ixion of such event.  Ixion shall assume the 
defense of, and may settle, that part of any such claim or action or made 
against UFRFI (or other Indemnitee) which relates to Ixion's indemnification 
and Ixion may take such other steps as may be necessary to protect itself.  
Ixion shall not be liable to UFRFI or other Indemnitees on account of any 
settlement of any such claim or litigation affected without Ixion's consent.  
The right of Ixion to assume the defense of any action shall be limited to 
that part of the action commenced against UFRFI or other Indemnitees which 
relates to Ixion's obligation of indemnification.

          ARTICLE IX - DISCLAIMER OF WARRANTIES

9.1     EXCEPT AS OTHERWISE EXPRESSLY SET FORTH IN THIS AGREEMENT, UFRFI MAKES 
NO REPRESENTATIONS AND EXTENDS NO WARRANTIES OF ANY KIND, EITHER EXPRESS OR 
IMPLIED, INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY, FITNESS 
FOR A PARTICULAR PURPOSE, AND VALIDITY OF PATENT RIGHTS CLAIMS, ISSUED OR 
PENDING.

9.2     UFRFI DOES NOT WARRANT THE VALIDITY OF THE PATENT RIGHTS LICENSED 
HEREUNDER AND MAKES NO REPRESENTATION WHATSOEVER WITH REGARD TO THE SCOPE OF 
THE LICENSED PATENT RIGHTS OR THAT SUCH PATENT RIGHTS MAY BE EXPLOITED BY 
IXION OR ANY AFFILIATE OR SUBLICENSEE WITHOUT INFRINGING OTHER PATENTS.

        ARTICLE X - EXPORT CONTROLS

     Ixion hereby agrees that it shall not sell, transfer, export or reexport 
any Licensed Products, Licensed Processes, Licensed Know-How, or related 
information in any form, or any direct products of such information, except in 
compliance with all applicable laws, including the export laws of any U.S. 
government agency and any regulations thereunder, and will not sell, transfer, 
export or reexport any such Licensed Products, Licensed Processes, Licensed 
Know-How, or information to any persons or any entities with regard to which 
there exist grounds to suspect or believe that they are violating such laws.  
Ixion shall be solely responsible for obtaining all licenses, permits, or 
authorizations required from the United States and any other government for 
any such export or reexport.  To the extent not inconsistent with this 
Agreement, UFRFI agrees to provide Ixion with such assistance as it may 
reasonably request in obtaining such licenses, permits, or authorization.

      ARTICLE XI - NON-USE OF NAMES

     11.1     Ixion shall not use the names of the University or UFRFI nor of 
any of either institution's employees, nor any adaptation thereof, in any 
advertising, promotional, or sales literature without prior written consent 
obtained from UFRFI in each case (such consent not to be unreasonably 
withheld), except that Ixion may state that it is licensed by UFRFI under one 
or more of the patents and/or applications comprising the Patent Rights.  
Requests for consent from UFRFI or the University shall be sent to the 
President of UFRFI with a copy to the Director of the Office of Patent, 
Copyright and Technology Licensing. UFRFI and the University shall not use the 
name of Ixion or its employees, directors, or agents, in any press or 
publicity release without prior written consent from the Chairman or President 
of Ixion (such consent not to be unreasonably withheld), except that the 
University or UFRFI may state that Ixion has been licensed under one or more 
of the patents or applications comprising the Patent Rights. Notwithstanding 
the foregoing, the University and UFRFI consent to references to them pursuant 
to any requirements of applicable law or governmental regulations, provided 
that, in the event of any such disclosure, Ixion shall afford UFRFI or the 
University the prior opportunity to review the text of such disclosure.  Ixion 
shall use its best efforts to comply with any reasonable requests by the 
University or UFRFI regarding changes.

     11.2     Where consent of a party is required under this Article XI, such 
consent shall be deemed granted if no written objection (or oral objection, 
confirmed immediately in writing) is received by the requesting party on or 
before the tenth calendar day following the date a written request for consent 
was received by the requested party.  For the purposes of this Article XI 
only, a item shall be deemed received as follows: (a) if hand delivered, upon 
delivery; (b) if sent by electronic mail, upon confirmation by the sending 
carrier that the message was deposited to the addressee's mailbox; (c) if sent 
by registered mail, return receipt requested, upon signing by the receiving 
party; or (d) if sent by ordinary mail in the United States, postage prepaid, 
and addressed as set forth in Article XIV, on the fifth calendar day after 
deposit in the mail. 

           ARTICLE XII - ASSIGNMENT

     This Agreement is not assignable and any attempt to do so shall be void.

         ARTICLE XIII - TERMINATION

     13.1     If Ixion shall cease to carry on its business, this Agreement 
shall terminate upon notice by UFRFI.

     13.2     Should Ixion fail to pay UFRFI royalties due and payable 
hereunder, UFRFI shall have the right to terminate this Agreement on 60 days' 
notice, unless Ixion shall pay UFRFI within the 60-day period, all such 
royalties and interest due and payable.  Upon the expiration of the 60-day 
period, if Ixion shall not have paid all such royalties and interest due and 
payable, the rights, privileges, and license granted hereunder shall 
terminate.

     13.3     Upon any material breach or default of this Agreement by Ixion, 
other than those occurrences set out in sections 13.1 and 13.2 above, which 
shall always take precedence in that order over any material breach or default 
referred to in this section 13.3, UFRFI shall have the right to terminate this 
Agreement and the rights, privileges, and license granted hereunder by 90 
days' notice to Ixion.  Such termination shall become effective unless Ixion 
shall have cured any such breach or default prior to the expiration of the 90-
day period.

     13.4     Ixion shall have the right to terminate this Agreement at any 
time 
on 90 days' written notice to UFRFI, and upon payment of all amounts due UFRFI 
through the effective date of the termination.

     13.5     Upon termination of this Agreement for any reason, nothing 
herein 
shall be construed to release either party from any obligation that matured 
prior to the effective date of such termination.  Ixion and any sublicensee 
thereof may, however, after the effective date of such termination, sell all 
Licensed Products, and complete Licensed Products in the process of 
manufacture at the time of such termination and sell the same, provided that 
Ixion shall pay to UFRFI the royalties thereon as required by Article IV of 
this Agreement and shall submit the reports required by Article V hereof on 
the sales of Licensed Products.

     13.6     Upon termination of this Agreement for any reason, any 
sublicense 
not then in default shall continue in full force and effect except that UFRFI 
shall be substituted in place of the sublicensor; provided, however, that the 
extent of UFRFI's obligations under such sublicense shall be consistent with 
(and not exceeding) its obligations under this Agreement.

     13.7     Bankruptcy.

          (a)     Notice of Assumption or Rejection.

               (i)     In the event that either party files or has filed 
against it a petition under the Federal Bankruptcy Code (11 U.S.C. ss 1, et 
seq.) (the "Bankruptcy Code"), is adjudged bankrupt, or files or has filed 
against it a petition for reorganization or arrangement under any law relating 
to bankruptcy or similar laws for the protection of debtors, whether under the 
laws of the United States and its political subdivisions or otherwise, such 
party shall (1) notify the                other party thereof within ten days 
after the filing of such petition or such adjudication, and (2), within 30 
days after the filing of such petition, shall notify the other party of the 
party's assumption or rejection of this Agreement, and shall file a petition 
with the appropriate court for approval of all other action as may be 
necessary to obtain the approval of such petition and of such assumption or 
rejection.
               (ii)     If such party does not:  (1) within 
thirty (30) days after the occurrence of any of the 
foregoing events, notify the other party of its 
assumption or rejection of this Agreement or file the 
petition, or (2) thereafter diligently take all other 
action necessary for the approval of the foregoing 
petition or of such assumption or rejection, such 
party shall be deemed to have rejected this Agreement.  
Each party acknowledges that, for purposes of Section 
365 of the Bankruptcy Code and similar provisions of 
any other or future similar laws relating to any 
party's assumption or rejection of any executory 
contract, a period of 30 days after the date of any 
filing or adjudication described above shall 
constitute a reasonable time in which such party shall 
assume or reject this Agreement and a party shall be 
deemed to have not diligently taken all action 
necessary for the approval of the foregoing petition 
or of such assumption or rejection if such petition, 
assumption or rejection is not approved by the 
appropriate court within 60 days after the filing of 
the petition for such assumption or rejection.

          (b)     Conditions to Assumption.  

               No election by any party, or any successor-in-
interest to such party, to assume this Agreement as 
contemplated by Section (a) above shall be effective unless 
each of the following conditions, each of which each party 
acknowledges is commercially reasonable in the context of a 
bankruptcy or similar proceeding, has been satisfied by such 
party and each of the other parties has acknowledged such 
satisfaction in writing:

               (1)     Cure.  Such party has cured, or has 
provided the other party adequate assurances that:

                    (A)     Monetary Defaults.  
Within ten days from the date of such assumption 
such party will cure all monetary defaults under 
this Agreement; and

                    (B)     Non-Monetary Defaults.  
Within 30 days from the date of such assumption 
such party will cure all non-monetary defaults 
under this Agreement.

               (2)     Pecuniary Loss.  Such party has 
compensated or has provided to the other party 
adequate assurances that within ten days from the date 
of assumption the other party will be compensated for 
any pecuniary loss incurred by the party arising from 
any default of such party under this Agreement prior 
to the assumption.

               (3)     Future Performance.  Such party has 
provided the other party with adequate assurances of 
the future performance of such party's obligations 
under this Agreement.

          (c)     Termination.  

               This Agreement shall terminate upon the 
rejection of this Agreement as contemplated by this Section 
by any party or successor-in-interest thereto.


          (d)     No Transfer.  

               Neither any party's interest in this Agreement 
nor any portion thereof shall pass to any trustee, receiver, 
or assignee for the benefit of creditors, or any other 
person or entity or otherwise by operation of law under the 
Bankruptcy Code or the insolvency laws of any state having 
jurisdiction of the person or property of such party unless 
the other party shall consent to such transfer in writing.

           ARTICLE XIV - PAYMENTS, NOTICES AND OTHER COMMUNICATIONS

     Any payment, notice or other communication pursuant to this Agreement 
shall be sufficiently made or given on the date of mailing if sent to such 
party by certified first class mail, postage prepaid, addressed to it at its 
address below or as it shall designate by written notice given to the other 
party:

     In the case of UFRFI:

          President
          University of Florida Research Foundation, Inc.
          223 Grinter Hall
          Gainesville, Florida  32611

     With a copy to:
          Director
          Office of Patent, Copyright and Technology Licensing
          186 Grinter Hall
          Gainesville, Florida  32611

     All payments to:

          Director
          Office of Patent, Copyright and Technology Licensing
          186 Grinter Hall
          Gainesville, Florida  32611




     PLEASE MAKE ALL CHECKS PAYABLE TO:

          University of Florida Research Foundation, Inc.
          223 Grinter Hall
          Gainesville, Florida  32611


     In the case of Ixion:

          President
          Ixion Biotechnology, Inc.
          One Progress Blvd., Box 26
          Alachua, FL 32615

ARTICLE XV - MISCELLANEOUS PROVISIONS

     15.1     This Agreement shall be construed, governed, interpreted, and 
applied in accordance with the laws of the State of Florida, except that 
questions affecting the construction and effect of any patent shall be 
determined by the law of the country in which the patent was granted.

     15.2     The parties hereto acknowledge that this Agreement sets forth 
the 
entire agreement and understanding of the parties hereto as to the subject 
matter hereof, and shall not be subject to any change or modification except 
by the execution of a written instrument subscribed to by the parties hereto.

     15.3     The provisions of this Agreement are severable, and in the event 
that any provisions of this Agreement shall be determined to be invalid or 
unenforceable under any controlling body of the law, such invalidity or 
unenforceability shall not in any way affect the validity or enforceability of 
the remaining provisions hereof.

     15.4     Ixion agrees to mark the Licensed Products sold in the United 
States with all applicable United States patent numbers.  All Licensed 
Products shipped to or sold in other countries shall be marked in such a 
manner as to conform with the patent laws and practice of the country of 
manufacture or sale.

     15.5     The failure of either party to assert a right hereunder or to 
insist upon compliance with any term or condition of this Agreement shall not 
constitute a waiver of that right or excuse a similar subsequent failure to 
perform any such term or condition by the other party.

     15.6     (a) Anything in this Agreement to the contrary notwithstanding, 
any and all knowledge, know-how, practices, process or other information of 
any kind and in any form (hereinafter referred to as "Confidential 
Information") disclosed or submitted, either orally, in writing or in other 
tangible or intangible form which is designated as Confidential Information, 
to either party by the other shall be received and maintained by the receiving 
party in strict confidence and shall not be disclosed to any third party, 
except that Ixion may disclose Confidential Information (pursuant to written 
confidentiality agreements) to its lawyers, accountants, advisors, investors, 
and potential investors.  Furthermore, neither party shall use the said 
Confidential Information for any purpose other than those purposes specified 
in this Agreement.  The parties may disclose Confidential Information to the 
minimum number of its employees reasonably requiring access thereto for the 
purposes of this Agreement provided, however, that prior to making any such 
disclosures each such employee shall be apprised of the duty and obligation to 
maintain Confidential Information in confidence and not to use such 
information for any purpose other than in accordance with the terms and 
conditions of this Agreement.

          (b)   Nothing contained herein will in any way restrict or impair 
either parties right to use, disclose, or otherwise deal with any Confidential 
Information which at the time of its receipt:

          (i)  Is generally available in the public domain, or thereafter 
becomes available to the public through no act of the receiving party; or

          (ii)  Was independently known prior to receipt thereof, or made 
available to such receiving party as a matter of lawful right by a third 
party.

     IN WITNESS WHEREOF, the parties have hereunto set their hands and seals 
and duly executed this Agreement as of the day and year first set forth above.


University of Florida Research Foundation, Inc.     Ixion Biotechnology, Inc.


By                                                                 By     
                                           Weaver H. Gaines
                                      Chairman and Chief Executive Officer
     

Acknowledged and Understood:


                                                             
Ammon B. Peck, Ph. D.





                                  APPENDIX A


UF Case No. UF# -1256
 "In vitro-grown Islets of Langerhan for curing diabetes"

Patent Application "In Vitro Growth of Functional Islets of Langerhan,"  USSN 
08/234,071, 
By Ammon B. Peck, Ph. D., filed April 28, 1994




                                  APPENDIX B





Foreign countries in which Patent Rights shall be filed, prosecuted and 
maintained in accordance with Article VI:

For UF Case No. UF# - 1256

     




NOTE: Certain portions of this document have been omitted based on a request
      for confidential treatment.  The non-public information has been filed
      with the Securities and Exchange Commission.   Omitted portions are
      designated with asterisks ("*").
     



This  Amendment No. 1 dated October 9, 1996,  is between the 
University of Florida Research Foundation, Inc., a not-for-profit 
corporation duly organized and existing under the laws of the 
State of Florida and having its principal office at 223 Grinter 
Hall, Gainesville, Florida, 32611-2037  ("UFRFI"), and Ixion 
Biotechnology, Inc., a corporation duly organized under the laws 
of  Delaware, and having its principal office at 12085 Research 
Drive, Alachua, Florida 32615 ("Ixion").


     WITNESSETH

WHEREAS, UFRFI and Ixion entered into a License Agreement 
dated February 17, 1995, relating to UF Case No. UF# -1256 "In 
vitro-grown Islets of Langerhans for curing diabetes" and the 
parent patent application"In Vitro Growth of Functional Islets of 
Langerhans," USSN 08/234,071, filed April 28, 1994 (the "License 
Agreement")  and

WHEREAS, UFRFI and Ixion desire to amend such License 
Agreement to the benefit of both parties; 

NOW, THEREFORE, in consideration of the premises and the 
mutual covenants contained herein the parties agree to Amendment 
No. 1 as follows:

1.  The definitions used in Amendment No. 1 shall be the 
definitions set forth in the License Agreement unless otherwise 
indicated.  

2.  Amend section 1.6 by deleting the words "and its 
sublicensees'" such that section 1.6 reads as follows:

1.6     "Net Sales" means Ixion's gross sales from the 
sale or lease of Licensed Products and Licensed Processes 
produced hereunder less the sum of the following:

(a)     discounts allowed in amounts customary in the 
trade and brokers' or agents' commissions, if 
any, allowed and paid to independent parties in 
arms-length transactions;

(b)     excise, value-added, or sales taxes, tariff 
duties or use taxes directly imposed and with 
reference to particular sales;

(c)     outbound transportation prepaid or allowed; 

(d)     amounts allowed or credited on returns; and

(e)     packing costs and insurance costs if itemized 
separately.

No deductions shall be made for commissions paid to 
individuals  regularly employed by Ixion and on its payroll, 
or for cost of collections.  Licensed Products shall be 
considered "sold" when  invoiced.

3.  Amend section 4.1(c) by deleting the words "or its 
sublicensees" such that section 4.1(c) reads as follows:


(c)     A Running Royalty in an amount equal to ******** of 
the Net Sales of the Licensed Products or Licensed Processes 
used, leased, or sold by or for Ixion; and


4.  Add a new section 4.1 (d) as follows:

(d)     Sublicense Royalty in an amount equal to **************
 of the sublicense revenue received by Ixion.  
Sublicense revenue received by Ixion shall mean revenue in 
the form of license fees, royalties, or other direct 
consideration (such as milestone payments made by a 
sublicensee), but not research support or collaboration fees 
from sublicensees; and

5.  Renumber old section 4.1 (d) and amend it as follows:

(e)     A further ******** upon the filing with the FDA of an 
application for a Product License Approval relating to a 
Licensed Product or Process, or the expiration of 24 months 
from the Effective Date, whichever is later.  Such milestone 
payment is in addition to any Running Royalties due under 
section 4.1(c) or Sublicensee Royalty due under section 
4.1(d) above.


6. Appendix A is amended to read, in its entirety, as attached.

7.  Appendix B is amended to read, in its entirety, as attached.

IN WITNESS WHEREOF, the parties have hereunto set their hands and seals 
and duly executed this Agreement as of the day and year first set forth above.


University of Florida Research Foundation, Inc.       Ixion Biotechnology, 
Inc.



By                                                                   By       
                                                             Dr. Karen A. 
Holbrook                                         Weaver H. Gaines
    President                                              Chairman and Chief 
Executive Officer


     APPENDIX A


UF Case No. UF# -1256
"In vitro-grown Islets of Langerhans for curing diabetes"

Patent Application "In Vitro Growth of Functional Islets of Langerhans," USSN 
08/234/071
By Ammon B. Peck, Ph.D., filed April 28, 1994

UF Case No. UF# 1376 "In Vitro Growth of Functional Islets of Langerhans and 
In Vivo Uses Thereof,"

Patent Application  "In Vitro Growth of Functional Islets of Langerhans and In 
Vivo Uses Thereof," USSN 08/432,434, by Ammon B. Peck, filed April 28, 1995

UF Case No. UF# - UF Case No. UF# 1484 "In Vitro Growth of Functional Islets 
of Langerhans and In Vivo Uses Thereof"

Patent Application "In Vitro Growth of Functional Islets of Langerhans and In 
Vivo Uses Thereof," USSN 08/546,746, by Ammon B. Peck, filed October 25, 1995

     APPENDIX B

Foreign countries in which Patent Rights shall be filed, prosecuted, and 
maintained in accordance with Article VI

UF Case No. # -1376 PCT  US95/05303 "In Vitro Growth of Functional Islets of 
Langerhans and In Vivo Uses Thereof, "
Publ. No. WO 95/29988

All subsequent national and PCT filings for applications appearing in Appendix 
A.



NOTE: Certain portions of this document have been omitted based on a request
      for confidential treatment.  The non-public information has been filed
      with the Securities and Exchange Commission.  Omitted portions are
      designated with asterisks ("*").
     



                                   PREAMBLE

     This Agreement is made this 23rd day of June 1997, (the "Effective 
Date") between Milton J. Allison of Ames, Iowa on behalf of himself and as 
sole Trustee of the Milton J. Allison Revocable Trust, an Iowa Trust arising 
out of a revocable trust agreement dated May 17, 1994 (collectively and 
individually referred to hereafter as "Licensor") and Ixion Biotechnology, 
Inc., a corporation duly organized under the laws of  Delaware, and having its 
principal office at 12085 Research Drive, Alachua, Florida 32615 ("Ixion").

                                  WITNESSETH

     WHEREAS, Licensor is the inventor of a discovery disclosed in the United 
States Department of Agriculture, Agricultural Research Service ("ARS"), 
Invention Disclosure No. 0172.95, dated July 11, 1995, entitled 
"Administration of Cells of Oxalobacter Formigenes to the Human Intestinal 
Tract to Minimize Absorption of Oxalic Acid," and the associated provisional 
patent application entitled "Materials and Methods for Treating or Preventing 
Oxalate Related Disease" filed May 23, 1997, and has the right to grant 
licenses under his Patent Rights (described below), subject only to a 
nonexclusive, nontransferable, irrevocable, paid-up license to practice the 
invention or have the invention practiced throughout the world by or on behalf 
of the United States Government; and

     WHEREAS, on August 16, 1996, Licensor applied to ARS, his former 
employer, to retain ownership of patent rights in the subject invention; and

     WHEREAS, on November 15, 1996, ARS stated that the record showed no 
interest on the part of the Government in applying for patent protection or in 
commercializing the subject invention and that, therefore, the Licensor was 
entitled to retain ownership of patent rights with regard to human health, 
subject to the license to the Government referred to above; and

     WHEREAS, on June 23, 1997, Milton J. Allison assigned all his right 
title and interest in the above discovery and provisional patent to the Milton 
J. Allison Revocable Trust, Milton J. Allison, sole Trustee; and

     WHEREAS, Licensor desires to have the Patent Rights utilized and is 
willing to grant a license thereunder; and

     WHEREAS, Ixion desires to obtain a license under the Patent Rights upon 
the terms and conditions of this Agreement; 

     NOW, THEREFORE, in consideration of the premises and the mutual 
covenants contained herein the parties agree as follows:

            ARTICLE I - DEFINITIONS

     The following words and phrases have the following meanings:

     1.1     "Inventor" means Milton J. Allison, Ph.D.

     1.2     "Ixion" means any of the following:

          (a)     Ixion or a related company of Ixion, the voting 
stock of which is directly or indirectly at least 50% owned 
or controlled by Ixion;

          (b)     an organization which directly or indirectly 
controls more than 50% of the voting stock of Ixion; and

          (c)     an organization, the majority ownership of which 
is directly or indirectly common to the ownership of Ixion.

     1.3     "Licensed Know-How" means any technical data, information, or 
knowledge within the knowledge and possession of the Inventor at any time 
which is incorporated in or becomes part of the Patent Rights.
     
     1.4     "Licensed Product" means any product or part thereof which:

          (a)     is covered in whole or in part by an issued, 
unexpired claim or a pending claim contained in the Patent 
Rights in the country in which any Licensed Product is made, 
used, or sold;

          (b)     is manufactured by using a process which is 
covered in whole or in part by an issued, unexpired claim or 
a pending claim contained in the Patent Rights in the 
country in which any Licensed Process is used or in which 
such product or part thereof is used or sold.

     1.5     "Licensed Process" means any process which is covered in whole or 
in part by an issued, unexpired claim or a pending claim contained in the 
Patent Rights.

     1.6     "Net Sales" means Ixion's, and its sublicensees' gross sales from 
the sale or lease of Licensed Products and Licensed Processes produced 
hereunder less the sum of the following:

          (a)     discounts allowed and brokers' or agents' 
commissions, if any, allowed and paid;

          (b)     excise, value-added, or sales taxes, tariff 
duties or use taxes directly imposed and with reference to 
particular sales;

          (c)     outbound transportation prepaid or allowed; 

          (d)     amounts allowed or credited on returns; and

          (e)     packing costs and insurance costs if itemized 
separately.

Licensed Products shall be considered "sold" when  payment is received.

     1.7     "Patent Rights" means all of the following Licensor intellectual 
property:

          (a)     the United States and foreign patents, patent 
applications, or provisional patent applications listed in 
Appendices A and B;

          (b)     United States and foreign patents issued from 
the applications listed in Appendices A and B and from 
divisionals, continuations, and continuations-in-part of 
these applications;

          (c)     claims of all foreign patent applications, and 
of the resulting patents, which are directed to subject 
matter specifically described in the United States patents 
and/or patent applications described in (a) or (b) above; 
and

          (d)     any reissues of United States patents described 
in (a) or (b) above.

     1.8     "Territory" means all the countries of the world.

                 ARTICLE II - GRANT

     2.1     Licensor grants to Ixion the exclusive right and license to make, 
have made, use, lease, and sell the Licensed Products, and to practice the 
Licensed Processes and the Licensed Know-How, in the Territory to the end of 
the term for which the Patent Rights are granted or the expiration date of the 
last to expire patent hereunder, whichever is later, unless sooner terminated 
according to the terms hereof.  

     2.2     Licensor shall not grant any other license to make, have made, 
use, lease, or sell Licensed Products or to utilize Licensed Processes during 
the period of time commencing with the Effective Date of this Agreement and 
terminating with the expiration or termination of this Agreement.

     2.3     Licensor reserves the right to practice under the Patent Rights 
for his own noncommercial research purposes.
     2.4     Ixion may sublicense others under this Agreement.  Each 
sublicense 
shall be consistent with the terms of this Agreement. 

     2.5     Any sublicenses granted by Ixion shall provide that the 
obligations to Licensor of this Agreement shall be binding upon the 
sublicensee as if it were a party to this Agreement.  Ixion shall attach 
copies of this Agreement to sublicense agreements. 

     2.6     Ixion shall forward to Licensor a copy of any sublicense 
agreement 
within 30 days of its execution and further shall forward to Licensor annually 
a copy of such reports received by Ixion from its sublicensees during the 
preceding twelve-month period under the sublicenses as shall be pertinent to a 
royalty accounting under said sublicenses.

     2.7     The license granted hereunder shall not be construed to confer 
any 
rights upon Ixion by implication, estoppel, or otherwise as to any technology 
not specifically set forth herein.

ARTICLE III - COMMERCIAL DUE DILIGENCE

     3.1     Ixion shall use commercially reasonable efforts to bring one or 
more Licensed Products or Licensed Processes to market through a program 
intended to attain  commercialization of Licensed Products and Licensed 
Processes.

             ARTICLE IV - ROYALTIES

     4.1     For the rights, privileges and, license granted hereunder, Ixion 
shall pay royalties to Licensor to the end of the term of the Patent Rights or 
the expiration date of the last to expire patent hereunder, whichever is 
later, unless sooner terminated according to the terms hereof, as follows:

          (a)     A License Issue Fee of an amount equal to any 
out-of-pocket costs of patenting incurred by Licensor prior 
to the Effective Date, such fee to be paid within 30 days of 
the receipt of an invoice therefor by Ixion;

          (b)     An Additional License Issue Fee of ********, due 
immediately upon the execution of this Agreement;

          (c)     A Running Royalty in an amount equal to ***** of 
the Net Sales of the Licensed Products or Licensed Processes 
used, leased, or sold by or for Ixion or its sublicensees.

     4.2     No multiple royalties shall be payable because any Licensed 
Product, its manufacture, use, lease, or sale are or shall be covered by more 
than one Patent Rights patent application or Patent Rights patent licensed 
under this Agreement.

     4.3     Royalty payments shall be paid in United States dollars in 
Gainesville, Florida or at such other place as Licensor may reasonably 
designate in writing consistent with the laws and regulations controlling in 
any foreign country.  If any currency conversion shall be required in 
connection with the payment of royalties hereunder, such conversion shall be 
made by using the exchange rate prevailing at the Chase Manhattan Bank (N.A.) 
on the last business day of the calendar quarterly reporting period to which 
such royalty payments relate.

     4.4     In the event the royalties set forth herein are higher than the 
maximum royalties permitted by the law or regulations of a particular country, 
the royalty payable for sales in such country shall be equal to the maximum 
permitted royalty under such law or regulations.  Notice of said event shall 
be provided to Licensor.  Ixion shall notify Licensor, in writing, within 90 
days of discovering that such royalties are approaching or have reached the 
maximum amount, and shall provide Licensor with written documentation 
regarding the laws or regulations establishing such maximum.

     4.5     In the event that any taxes, withholding or otherwise, are levied 
by any taxing authority in connection with accrual or payment of any royalties 
payable by Ixion under this Agreement, and Ixion determines in good faith that 
it must pay such taxes, Ixion shall have the right to pay such taxes to the 
local tax authorities on behalf of Licensor and payment of the net amount due 
after reduction by the amount of such taxes, shall fully satisfy Ixion's 
royalty obligations under this Agreement.  Ixion shall provide Licensor with 
appropriate receipts or other documentation supporting such payment.  Ixion 
shall inform Licensor in writing, within 90 days of notification that taxes 
will or have been levied by a taxing authority.

     4.6     In the event that a Licensed Product is sold in a combination 
package or kit containing other active products, then Net Sales for purposes 
of determining royalty payments on the combination package, shall be 
calculated using one of the following methods, but in no event shall the 
royalties payable to Licensor be reduced to less than 25% of that provided for 
in Section 4.1 above:

     (a)     by multiplying the net selling price of that combination 
package by the fraction A/A+B, where A is the gross selling price, 
during the royalty-paying period in question, of the Licensed 
Product sold separately, and B is the gross selling price during 
the royalty period in question, of the other active products sold 
separately; or
     (b)     in the event that no such separate sales are made of the 
Licensed Product or any of the active products in such combination 
package during the royalty-paying period in question, Net Sales 
for the purposes of determining royalty payments, shall be 
calculated by dividing the net selling price of the combination 
package by the number of functions performed by the combination 
package sold where such package contains active agents other than 
those licensed under this Agreement.  The parties recognize that 
this provision will require consultation and that in the event a 
combination package or kit circumstance arises, the parties will 
negotiate in good faith to determine the calculation of Net Sales 
pursuant to this section.

     4.7     If it is necessary for Ixion to take any license(s) in any given 
country, under third-party patents in order to practice the Licensed Processes 
or produce the Licensed Products in that country, then Ixion can deduct up to 
50% of the royalties otherwise due under this Agreement for Net Sales in that 
country, until such time as Ixion has recovered an amount equal to the 
royalties payable to such third parties.

    ARTICLE V - REPORTS AND RECORDS

     5.1     Ixion shall keep accurate books of account for the purpose of 
showing the amounts payable to Licensor hereunder.  Said books of account 
shall be kept at Ixion's principal place of business or the principal place of 
business of the appropriate division of Ixion to which this Agreement relates.  
Said books and the supporting data shall be open at all reasonable times for 
one year following the end of the calendar year to which they pertain, to the 
inspection of Licensor or its agents at Licensor's expense for the purpose of 
verifying Ixion's royalty statements.

     5.2     Ixion, within 45 days after December 31 of each year, shall 
deliver to Licensor accurate reports, giving such particulars of the business 
conducted by Ixion and its sublicensees during the preceding twelve-month 
period under this Agreement as shall be pertinent to a royalty accounting 
hereunder.  These shall include at least the following:

          (a)     number of Licensed Products manufactured and 
sold;

          (b)     total billings for Licensed Products sold;

          (c)     an accounting for all Licensed Processes used or 
sold;

          (d)     deductions applicable to a determination of Net 
Sales;

          (e)     total royalties due; and

          (f)     names and addresses of all sublicensees of 
Ixion.

     5.3     With each such report submitted, Ixion shall pay to Licensor the 
royalties due and payable under this Agreement.  If no royalties shall be due, 
Ixion shall so report.

     5.4  On or before the 90th day following the close of Ixion's fiscal 
year, Ixion shall provide Licensor with Ixion's year-end balance sheet and an 
operating statement for the preceding fiscal year then ended.

     5.5     The royalty payments, license fees, and reimbursement for patent-
related expenses set forth in this Agreement shall, if overdue, bear interest 
until payment at the monthly rate of 1.0%.  The payment of such interest shall 
not foreclose Licensor from exercising any other rights it may have as a 
consequence of the lateness of any payment.

    ARTICLE VI - PATENT PROSECUTION

     6.1     Ixion shall apply for, seek issuance of, and maintain during the 
term of this Agreement the Patent Rights in the United States and in the 
foreign countries listed in Appendix B hereto to the extent, in its sole 
discretion, it deems such actions commercially reasonable. Licensor shall have 
reasonable opportunities to advise Ixion and shall cooperate with Ixion in 
such prosecution, filing, and maintenance. 

     6.2     Payment of all fees and costs relating to the filing, 
prosecution, 
and maintenance of the Patent Rights shall be the responsibility of Ixion 
after the Effective Date. 
     
         ARTICLE VII - INFRINGEMENT

     7.1     Licensor shall inform Ixion promptly in writing of any alleged 
infringement of the Patent Rights by a third party and of any available 
evidence thereof.

     7.2     During the term of this Agreement, Ixion shall have the right, 
but 
shall not be obligated, to prosecute at its own expense any such infringements 
of the Patent Rights.  If Ixion prosecutes any such infringement, Licensor 
agrees that Ixion may include Licensor as a co-plaintiff in any such suit, 
without expense to Licensor.  The total cost of any such infringement action 
commenced or defended solely by Ixion shall be borne by Ixion and Ixion shall 
keep any recovery or damages for past infringement derived therefrom.

     7.3     If within six months after having been notified of any alleged 
infringement or such shorter time proscribed by law, Ixion shall have been 
unsuccessful in persuading the alleged infringer to desist or shall not have 
brought and shall not be diligently prosecuting an infringement action, or if 
Ixion shall notify Licensor at any time prior thereto of its intention not to 
bring suit against any alleged infringer, then, and in those events only, 

     (a)     Licensor shall have the right, but shall not be obligated, 
to prosecute at its own expense any infringement of the Patent 
Rights (keeping any recovery or damages for past infringements 
derived therefrom), and Licensor may, for such purposes, use the 
name of Ixion as co-plaintiff.  No settlement, consent judgment, 
or other voluntary final disposition of the suit may be entered 
into without the consent of Ixion, which consent shall not 
unreasonably be withheld.  Licensor shall indemnify Ixion against 
any order for costs that may be made against Ixion in such 
proceedings.

     (b)     Payments which are earned under Article IV hereof shall be 
waived so long as any such infringement which the parties agree in 
good faith is material continues, such waiver not to exceed 75% of 
the royalties payable hereunder.

     7.4     If Licensor has brought a suit pursuant to section 7.3 above, it 
shall have the right for such purpose to join Ixion as a co-plaintiff at 
Ixion's expense. Ixion independently shall have the right to join any such 
suit or action brought by Licensor, and, in such event, shall pay one-half of 
the cost of such suit or action from the date of joining.  Any damages 
recovered by a suit or action in which Ixion has paid its share of costs shall 
be first used to reimburse each party hereto for the cost of such suit or 
action (including attorney's fees) actually paid by each party hereto as the 
case may be, then to reimburse Licensor for any payments waived under this 
Section 7.4, and the residue, if any, shall be divided equally between the 
parties hereto.

     7.5     In the event that a declaratory judgment action alleging 
invalidity or noninfringement of any of the Patent Rights shall be brought 
against Ixion, Licensor, at its option, shall have the right, within 30 days 
after commencement of such action, to intervene and take over the sole defense 
of the action at its own expense.

     7.6     In any infringement suit as either party may institute to enforce 
the Patent Rights pursuant to this Agreement, the other party hereto shall, at 
the request and expense of the party initiating such suit, cooperate in all 
respects and, to the extent possible, have its employees testify when 
requested and make available relevant records, papers, information, samples, 
specimens, and the like.

   ARTICLE VIII - PRODUCT LIABILITY

     8.1     Ixion shall at all times during the term of this Agreement and 
thereafter, indemnify, defend, and hold Licensor harmless against all claims 
and expenses, including legal expenses and reasonable attorneys' fees, whether 
arising from a third party claim or resulting from Licensor's enforcing this 
indemnification clause against Ixion, or arising out of the death of or injury 
to any person or persons or out of any damage to property and against any 
other claim, proceeding, demand, expense, or liability of any kind whatsoever 
resulting from the production, manufacture, sale, use, lease, consumption, or 
advertisement of the Licensed Products and/or Licensed Processes or arising 
from any right or obligation of Ixion hereunder.  This indemnification shall 
not apply to any liability, damage, loss, or expense to the extent that it is 
attributable to the negligence or intentional wrongdoing of the Licensor.

     8.2     At such time as any product, process, or service relating to, or 
developed pursuant to, this Agreement is being commercially distributed or 
sold (other than for the purpose of obtaining regulatory approvals) by Ixion 
or by a licensee, affiliate, or agent of Ixion, Ixion shall, at its sole cost 
and expense, procure and maintain policies of comprehensive general liability 
insurance naming Licensor as additional insureds.  Such comprehensive general 
liability insurance shall provide (a) product liability coverage, and (b) 
broad form contractual liability coverage for Ixion's indemnification under 
sections 8.1 and 8.2 above.  Ixion may elect to self-insure.

     8.3     Ixion shall provide Licensor with written evidence of such 
insurance upon request, and shall provide Licensor with written notice at 
least 45 days prior to the cancellation, non-renewal, or material change in 
such comprehensive general liability insurance; if Ixion does not obtain 
replacement insurance providing comparable coverage within such 45 day period, 
Licensor shall have the right to terminate this Agreement.

     8.4     Ixion shall maintain such comprehensive general liability 
insurance beyond the expiration or termination of this Agreement during (a) 
the period that any product, process, or service, relating to, or developed 
pursuant to, this Agreement is being commercially distributed or sold (other 
than for the purpose of obtaining regulatory approvals) by Ixion or by a 
licensee, affiliate, or agent of Ixion, and (b) a reasonable period after the 
period referred to in section 8.5 (a) above, which in no event shall be less 
than 15 years.

     8.5     In the event any such action is commenced or claim made or 
threatened against Licensor or other Indemnitees as to which Ixion is 
obligated to indemnify it or them or hold it or them harmless, Licensor or the 
other Indemnitees shall promptly notify Ixion of such event.  Ixion shall 
assume the defense of, and may settle, that part of any such claim or action 
or made against Licensor (or other Indemnitee) which relates to Ixion's 
indemnification and Ixion may take such other steps as may be necessary to 
protect itself.  Ixion shall not be liable to Licensor or other Indemnitees on 
account of any settlement of any such claim or litigation affected without 
Ixion's consent.  The right of Ixion to assume the defense of any action shall 
be limited to that part of the action commenced against Licensor or other 
Indemnitees which relates to Ixion's obligation of indemnification.

          ARTICLE IX - DISCLAIMER OF WARRANTIES

9.1     EXCEPT AS OTHERWISE EXPRESSLY SET FORTH IN THIS AGREEMENT, LICENSOR 
MAKES NO REPRESENTATIONS AND EXTENDS NO WARRANTIES OF ANY KIND, EITHER EXPRESS 
OR IMPLIED, INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY, 
FITNESS FOR A PARTICULAR PURPOSE, AND VALIDITY OF PATENT RIGHTS CLAIMS, ISSUED 
OR PENDING.

9.2     LICENSOR DOES NOT WARRANT THE VALIDITY OF THE PATENT RIGHTS LICENSED 
HEREUNDER AND MAKES NO REPRESENTATION WHATSOEVER WITH REGARD TO THE SCOPE OF 
THE LICENSED PATENT RIGHTS OR THAT SUCH PATENT RIGHTS MAY BE EXPLOITED BY 
IXION OR ANY AFFILIATE OR SUBLICENSEE WITHOUT INFRINGING OTHER PATENTS.

          ARTICLE X - ASSIGNMENT

     10.1     This Agreement is not assignable; provided, however, that in the 
event that the Milton J. Allison Revocable Trust is revoked or terminated and 
the corpus thereof, including this Agreement reverts to Milton J. Allison, 
this Agreement shall be assumed by Milton J. Allison.


           ARTICLE XI - TERMINATION

     11.1     If Ixion shall cease to carry on its business, this Agreement 
shall terminate upon notice by Licensor.

     11.2     Should Ixion fail to pay Licensor royalties due and payable 
hereunder, Licensor shall have the right to terminate this Agreement on 90 
days' notice, unless Ixion shall pay Licensor within the 90-day period, all 
such royalties and interest due and payable.  Upon the expiration of the 90-
day period, if Ixion shall not have paid all such royalties and interest due 
and payable, the rights, privileges, and license granted hereunder shall 
terminate.

     11.3     Upon any material breach or default of this Agreement by Ixion, 
other than those occurrences set out in sections 11.1 and 11.2 above, which 
shall always take precedence in that order over any material breach or default 
referred to in this section 11.3, Licensor shall have the right to terminate 
this Agreement and the rights, privileges, and license granted hereunder by 90 
days' notice to Ixion.  Such termination shall become effective unless Ixion 
shall have cured any such breach or default prior to the expiration of the 90-
day period.

     11.4     Ixion shall have the right to terminate this Agreement at any 
time 
on 90 days' written notice to Licensor, and upon payment of all amounts due 
Licensor through the effective date of the termination.

     11.5     Upon termination of this Agreement for any reason, nothing 
herein 
shall be construed to release either party from any obligation that matured 
prior to the effective date of such termination.  Ixion and any sublicensee 
thereof may, however, after the effective date of such termination, sell all 
Licensed Products, and complete Licensed Products in the process of 
manufacture at the time of such termination and sell the same, provided that 
Ixion shall pay to Licensor the royalties thereon as required by Article IV of 
this Agreement and shall submit the reports required by Article V hereof on 
the sales of Licensed Products.

     11.6     Upon termination of this Agreement for any reason, any 
sublicense 
not then in default shall continue in full force and effect except that 
Licensor shall be substituted in place of the sublicensor; provided, however, 
that the extent of Licensor's obligations under such sublicense shall be 
consistent with (and not exceeding) its obligations under this Agreement.

     11.7     Bankruptcy.

          (a)     Notice of Assumption or Rejection.

               (i)     In the event that either party files or has filed 
against it a petition under the Federal Bankruptcy Code (11 U.S.C.  1, et 
seq.) (the "Bankruptcy Code"), is adjudged bankrupt, or files or has filed 
against it a petition for reorganization or arrangement under any law relating 
to bankruptcy or similar laws for the protection of debtors, whether under the 
laws of the United States and its political subdivisions or otherwise, such 
party shall (1) notify the                other party thereof within ten days 
after the filing of such petition or such adjudication, and (2), within 30 
days after the filing of such petition, shall notify the other party of the 
party's assumption or rejection of this Agreement, and shall file a petition 
with the appropriate court for approval of all other action as may be 
necessary to obtain the approval of such petition and of such assumption or 
rejection.

               (ii)     If such party does not:  (1) within 
thirty (30) days after the occurrence of any of the 
foregoing events, notify the other party of its 
assumption or rejection of this Agreement or file the 
petition, or (2) thereafter diligently take all other 
action necessary for the approval of the foregoing 
petition or of such assumption or rejection, such 
party shall be deemed to have rejected this Agreement.  
Each party acknowledges that, for purposes of Section 
365 of the Bankruptcy Code and similar provisions of 
any other or future similar laws relating to any 
party's assumption or rejection of any executory 
contract, a period of 30 days after the date of any 
filing or adjudication described above shall 
constitute a reasonable time in which such party shall 
assume or reject this Agreement and a party shall be 
deemed to have not diligently taken all action 
necessary for the approval of the foregoing petition 
or of such assumption or rejection if such petition, 
assumption or rejection is not approved by the 
appropriate court within 60 days after the filing of 
the petition for such assumption or rejection.

          (b)     Conditions to Assumption.  

               No election by any party, or any successor-in-
interest to such party, to assume this Agreement as 
contemplated by Section (a) above shall be effective unless 
each of the following conditions, each of which each party 
acknowledges is commercially reasonable in the context of a 
bankruptcy or similar proceeding, has been satisfied by such 
party and each of the other parties has acknowledged such 
satisfaction in writing:

               (1)     Cure.  Such party has cured, or has 
provided the other party adequate assurances that:

                    (A)     Monetary Defaults.  
Within ten days from the date of such assumption 
such party will cure all monetary defaults under 
this Agreement; and

                    (B)     Non-Monetary Defaults.  
Within 30 days from the date of such assumption 
such party will cure all non-monetary defaults 
under this Agreement.

               (2)     Pecuniary Loss.  Such party has 
compensated or has provided to the other party 
adequate assurances that within ten days from the date 
of assumption the other party will be compensated for 
any pecuniary loss incurred by the party arising from 
any default of such party under this Agreement prior 
to the assumption.

               (3)     Future Performance.  Such party has 
provided the other party with adequate assurances of 
the future performance of such party's obligations 
under this Agreement.

          (c)     Termination.   This Agreement shall terminate 
upon the rejection of this Agreement as contemplated by this 
Section by any party or successor-in-interest thereto.

          (d)     No Transfer.  Neither any party's interest in 
this Agreement nor any portion thereof shall pass to any 
trustee, receiver, or assignee for the benefit of creditors, 
or any other person or entity or otherwise by operation of 
law under the Bankruptcy Code or the insolvency laws of any 
state having jurisdiction of the person or property of such 
party unless the other party shall consent to such transfer 
in writing.

           ARTICLE XII - PAYMENTS, NOTICES AND OTHER COMMUNICATIONS

     12.1     Any payment, notice or other communication pursuant to this 
Agreement shall be sufficiently made or given on the date of mailing if sent 
to such party by first class mail, postage prepaid, addressed to it at its 
address below or as it shall designate by written notice given to the other 
party:

     In the case of Licensor:

          Milton J. Allison, Ph.D.
          1434 Linden Drive
          Ames, IA 50010



     In the case of Ixion:

          President
          Ixion Biotechnology, Inc.
          12085 Research Drive
          Alachua, FL 32615

ARTICLE XIII - MISCELLANEOUS PROVISIONS

     13.1     This Agreement shall be construed, governed, interpreted, and 
applied in accordance with the laws of the State of Florida, except that 
questions affecting the construction and effect of any patent shall be 
determined by the law of the country in which the patent was granted.

     13.2     This Agreement sets forth the entire agreement and understanding 
of the parties hereto as to the subject matter hereof, and shall not be 
subject to any change or modification except by the execution of a written 
instrument subscribed to by the parties hereto.

     13.3     The provisions of this Agreement are severable, and in the event 
that any provisions of this Agreement shall be determined to be invalid or 
unenforceable under any controlling body of the law, such invalidity or 
unenforceability shall not in any way affect the validity or enforceability of 
the remaining provisions hereof.

     13.4     Ixion agrees to mark the Licensed Products sold in the United 
States with all applicable United States patent numbers.  All Licensed 
Products shipped to or sold in other countries shall be marked in such a 
manner as to conform with the patent laws and practice of the country of 
manufacture or sale.

     13.5     The failure of either party to assert a right hereunder or to 
insist upon compliance with any term or condition of this Agreement shall not 
constitute a waiver of that right or excuse a similar subsequent failure to 
perform any such term or condition by the other party.

     13.6     (a) Anything in this Agreement to the contrary notwithstanding, 
any and all knowledge, know-how, practices, process or other information of 
any kind and in any form (hereinafter referred to as "Confidential 
Information") disclosed or submitted, either orally, in writing or in other 
tangible or intangible form which is designated as Confidential Information, 
to either party by the other shall be received and maintained by the receiving 
party in strict confidence and shall not be disclosed to any third party, 
except that Ixion may disclose Confidential Information (pursuant to written 
confidentiality agreements) to its lawyers, accountants, advisors, investors, 
and potential investors.  Furthermore, neither party shall use the said 
Confidential Information for any purpose other than those purposes specified 
in this Agreement.  The parties may disclose Confidential Information to the 
minimum number of its employees reasonably requiring access thereto for the 
purposes of this Agreement provided, however, that prior to making any such 
disclosures each such employee shall be apprised of the duty and obligation to 
maintain Confidential Information in confidence and not to use such 
information for any purpose other than in accordance with the terms and 
conditions of this Agreement.

          (b)   Nothing contained herein will in any way restrict or impair 
either parties right to use, disclose, or otherwise deal with any Confidential 
Information which at the time of its receipt:

          (i)  Is generally available in the public domain, or thereafter 
becomes available to the public through no act of the receiving party; or

          (ii)  Was independently known prior to receipt thereof, or made 
available to such receiving party as a matter of lawful right by a third 
party.

     13.7     Licensor will use his best efforts to assist Ixion in the 
transfer 
of the technology represented by the Patent Rights through consultation, 
making available experimental data, or otherwise.  

     13.8     Milton J. Allison,  in his capacity as Trustee and as an 
individual, agrees that in the event of the revocation of the Milton J. 
Allison Revocable Trust, or the return of the corpus of such Trust to the said 
Milton J. Allison, this Agreement shall remain in full force and effect and 
shall be binding on the said Milton J. Allison as though he and Ixion were the 
sole parties hereto.

     IN WITNESS WHEREOF, the parties have hereunto set their hands and seals 
and duly executed this Agreement as of the day set forth first above.

Milton J. Allison, Ph.D.                    Ixion Biotechnology, Inc


                                                                      By    
                                           Weaver H. Gaines
                                   Chairman and Chief Executive Officer  

Milton J. Allison Revocable Trust



By                                                      
     Milton J. Allison, Trustee


                                  APPENDIX A


Invention Disclosure No. 0172.95

"Administration of Cells of Oxalobacter Formigenes to the Human Intestinal 
Tract to Minimize Absorption of Oxalic Acid"


Provisional Patent Docket No. IXN-100P

"Materials and Methods for Treating or Preventing Oxalate Related Disease."
By Milton J. Allison, Ph. D.

Filed on May 23, 1997

Any Patent Application arising out of or related to the Provisional Patent 
Docket No. IXN-100) or Invention Disclosure No. 0172.95




                                  APPENDIX B





Foreign countries in which Patent Rights shall be filed, prosecuted and 
maintained in accordance with Article VI:

     Patent application arising out of the Provisional Patent Application (or 
series of Provisional Patent Applications) shall be filed under the Patent 
Cooperation Treaty and such national filings thereafter as Ixion shall 
determine.

     

     

NOTE: Certain portions of this document have been omitted based on a request
      for confidential treatment.  The non-public information has been filed
      with the Securities and Exchange Commission.  Omitted portions are
      designated with asterisks ("*").
     




     SPONSORED RESEARCH AGREEMENT


THIS AGREEMENT is made this _____ day of _______________, 1996 ("Effective 
Date") between Genetics Institute, Inc., a Delaware Corporation having its 
principal place of business at 87 CambridgePark Drive, Cambridge, 
Massachusetts 02140 USA ("GI"), and Ixion Biotechnology, Inc., a Delaware 
corporation, having its principal place of business at 12085 Research Drive,
Alachua, FL 32615 ("Ixion").

The parties agree as follows:

1.     Definitions.  The terms are defined as follows:

1.1     "Affiliate" means any person, corporation or other entity which, 
directly or indirectly, controls, is controlled by, or is under 
common control with a party and "control" shall mean the direct or 
indirect ownership of fifty percent (50%) or more of the 
outstanding equity of an entity or the right to receive fifty 
percent (50%) or more of the profits of an entity or the right to 
control an entity.  Notwithstanding the foregoing, American Home 
Products Corporation, which holds approximately 63% of the 
outstanding equity of GI, shall only become an  Affiliate of GI 
upon the giving of written notice by GI to Ixion.

1.2     "Improvements"  shall have the meaning assigned to it in Section 
5.1.

1.3     "Invention" means any invention, improvement, discovery, patent 
application, patent, trade secret, know-how, biological material, 
data, reagent, or other intellectual property, patentable or 
unpatentable, first conceived or reduced to practice in the course 
of the Project Work.  "Ixion Invention" means any Invention made 
solely by employees or consultants of Ixion.  "GI Invention" means 
any Invention made solely by employees or consultants of GI and 
"Joint Invention" means any Invention made jointly by both 
parties.

1.4     "IPSC Technology" shall have the meaning assigned to it in 
Section 2.

1.5     "Know-How" means all technical and other information relating 
to, used in, or arising from the Project Work such as (but without 
limitation) data, formulae, specifications, procedures, tests, 
genes, plasmids, DNA sequences, vectors, clones, cell lines, 
cultures, constructions, assay systems, materials and techniques.

1.6     "Patent Rights" means any patents and patent applications owned 
or controlled by a party in connection with an Invention or 
relating to any Know-How used in the Project Work.

1.7     "Patent License Agreement" means the Patent License Agreement 
between Ixion and the University of Florida Research Foundation 
attached hereto as Exhibit A, and any amendments thereto.

1.8     "Project Committee" means a joint committee composed of two 
members from each party, including Dr. Peck acting as a consultant 
or employee on behalf of  Ixion and Dr. Wong as an employee of GI.

1.9     "Program Technology" means that portion of the Know-How 
generated by a party or by the parties under the Project Work.

1.10     "Project Work" means the research activities to be conducted by 
Ixion as described in Schedule A, as amended by written agreement 
of the parties from time to time.

1.11     "Research Support Agreement" means the Research Support 
Agreement between Ixion and the University of Florida Research 
Foundation attached hereto as Exhibit B.

1.12     "ROFR Rights" shall  have the meaning assigned to it in Section 
5.2.

1.13     "UF Patent Rights" means all of the patent rights licensed to 
Ixion from the University of Florida Research Foundation, Inc. 
pursuant to the Patent License Agreement and/or the Research 
Support Agreement.

2.     Background.  Dr. Ammon B. Peck has identified a method for growing in
vitro Islet Progenitor/Stem Cells (also known as "Islet Producing Stem 
Cells" in the Research Support Agreement) and related technology (the 
"IPSC Technology") which are claimed in the UF Patent Rights.  GI is 
experienced in cloning and expressing novel proteins, and has the 
research and technical capabilities to develop, manufacture and market 
recombinant proteins for therapeutic use. Ixion has entered into the 
Sponsored Research Agreement and the Patent License Agreement with the 
University of Florida and the University of Florida Research Foundation 
to fund certain further research of the IPSC Technology by Dr. Peck. GI 
wishes to sponsor the Project Work at Ixion directed to: (A) validation 
of the IPSC Technology and (B) understanding differentiation of 
pancreatic stem cells and/or progenitor cells, as further described in 
Schedule A. This may result in Inventions by Ixion employees or 
consultants, GI employees or consultants, or inventors representing both 
parties in which patent applications may be filed under this Agreement.

3.     The Sponsored Research.

3.1     The Project Work.  Ixion agrees to conduct the Project Work 
described in Schedule A.  Dr. Peck shall act as an employee or 
consultant to Ixion in Ixion's performance of the Project Work 
hereunder.  The term for performance of the Project Work shall be 
twelve (12) months, unless extended pursuant to Section 3.2.  

3.2     Extensions.  In order to complete the Project Work, GI may, at 
its option, extend the term for performance of the Project Work 
for up to two (2) additional six month periods by giving notice of 
extension no later than ninety (90) days prior to the expiration 
of the then-current term of the Project Work.  Separate extensions 
may be made for cell transplantation work or work relating to the 
understanding of differentiation or extensions for both areas may 
be made.

3.3     Records, Communication, Access to Facilities.  Ixion shall keep 
written records and provide written progress reports (as provided 
for below in Section 3.4) and communicate regularly to discuss the 
progress of the Project Work.  Ixion shall keep separate lab 
notebooks dedicated solely to the work being performed in the 
course of the Project Work.  The Project Committee, which shall be 
responsible for overseeing the Project Work, shall meet at least 
four times annually and ad hoc as necessary.  The Project 
Committee will approve the plan for Project Work and any revisions 
thereto.  Each party will allow the other party access to 
laboratories and facilities at which the Project Work is being 
carried out and to the dedicated lab notebooks and any other 
written records relating to the Project Work as may be reasonably 
necessary. 

3.4     Research Funding.  Ixion shall perform the Project Work in 
return for the payments set forth below: 

(a) ******** upon execution of this Agreement.

(b) ******** upon invoice following receipt of an interim 
written progress report  at the end of the fourth month of 
the Project Work.

(c) ******** upon invoice following receipt of an interim 
written progress report  at the end of the eighth month of 
the Project Work.

(d) ******** upon invoice following receipt of a final (or 
interim, in the event of any extension) written progress 
report  at the end of the twelfth month of the Project Work.

(e) ******** upon invoice at the beginning of each six month 
extension of the term of the  Project Work relating to 
understanding differentiation.

(f) ******** upon invoice following receipt of each final six 
month extension report relating to understanding 
differentiation.

(g) ******** upon invoice at the beginning of each six month 
extension of the term of the  Project Work relating to cell 
transplantation.

(h) ******** upon invoice following receipt of each final six 
month extension report relating to cell transplantation.



4.     Intellectual Property.

4.1     Ownership of Intellectual Property.  Ixion shall own all Patent 
Rights, Program Technology and Inventions developed solely by its 
employees or consultants, and/or shall have exclusive license 
rights to all Patent Rights, Program Technology and Inventions 
developed solely by employees of the University of Florida 
conducting sponsored research pursuant to the Research Support 
Agreement.  GI shall own all Patent Rights, Program Technology and 
Inventions developed solely by its employees or consultants.  
Ixion and GI shall jointly own all Patent Rights, Program 
Technology and Inventions developed jointly by employees or 
consultants of Ixion and by employees or consultants of GI. 
Promptly after the making of an Invention by any person or persons 
engaged in work on the Project Work, each Party shall disclose 
full details of such Invention (whether by GI or Ixion), to the 
Project Committee and such person shall make available to the 
parties to this Agreement all Know-How relating thereto, subject 
to the confidentiality and use restrictions contained in this 
Agreement.  For the purpose of this Section GI employees and 
consultants shall be deemed to be "engaged in work on the Project 
Work" to the extent such employees or consultants (a) make 
scientific contributions to Ixion hereunder, or (b) use Ixion 
Confidential Information.

4.2     GI to File Patent Applications.  Any patent applications that in 
the reasonable business and legal judgment of GI are considered 
necessary to protect the proprietary positions of the parties will 
be prepared, filed and paid for by GI.  Inventorship will be 
determined by legal standards and each named inventor will assign 
his or her rights to his or her institution or employer.  GI will 
use all reasonable efforts to provide Ixion copies of relevant 
correspondence relating to these applications in sufficient time 
for Ixion, at its own expense, to review and comment.  Ixion shall 
have full rights of consultation with GI's patent counsel with 
respect to any patents or patent applications covering Ixion 
Inventions or Joint Inventions and GI shall reasonably consider 
Ixion's comments and requests made by Ixion with regard to such 
patent applications or issued patents.  In the event GI does not 
exercise its option for an exclusive license pursuant to Section 
5.1 regarding Patent Rights in which Ixion has an ownership 
interest, Ixion may elect, upon notice to be given to GI within 30 
days, to assume responsibility for the prosecution of such Patent 
Rights whereupon Ixion shall become obligated to refund to GI the 
reasonable costs and expenses GI has incurred in prosecuting, 
maintaining or enforcing such Patent Rights.  Ixion may reimburse 
GI for any of such costs pertaining to Patent Rights owned jointly 
by GI and Ixion in cash or stock in Ixion (valued at fair market 
value at the time of reimbursement), at Ixion's option.  
Reimbursement of GI by Ixion for solely owned Ixion Patent Rights 
shall be in cash, on an installment basis over a period not to 
exceed thirty-six (36) months.  The rate of reimbursement shall 
not exceed the costs Ixion would or has generally incurred for 
retention of outside patent counsel on similar patent matters.  If 
Ixion does not elect to assume prosecution of any such Patent 
Rights, Ixion shall assign all right, title and interest in such 
inventions to GI and GI shall have no further obligations to Ixion 
with respect thereto.

4.3     Prosecution of UF Patent Rights.  GI will advise and consult 
with Ixion regarding the prosecution of the UF Patent Rights and 
shall reimburse Ixion for all reasonable expenses incurred by 
Ixion after the Effective Date in connection with such prosecution 
in the following countries:  United States, European Patent 
Convention Countries, Japan, Canada, Mexico, Australia, Korea, and 
any other country agreed to in writing by GI. In the event that GI 
does not exercise its option for an exclusive license pursuant to 
Section 5.1, Ixion shall reimburse GI for any such expenses paid 
by GI pursuant to this Section 4.3 in cash, on an installment 
basis over a period not to exceed thirty-six (36) months.

4.4     Ixion's Right to File Patent Applications.  If  GI chooses not 
to file or maintain in any country an application or patent or 
particular claims thereunder on Inventions jointly developed or 
solely developed by Ixion, it shall give notice to Ixion and Ixion 
will retain the right to file or maintain such application or 
patent in that country at Ixion's expense, as long as the parties 
have not previously agreed that the absence of a patent in that 
country is mutually beneficial.  If GI chooses not to file or 
maintain any such patent, then the following rules shall apply:

(a)     If the Invention is an Ixion Invention, GI shall forfeit 
all rights hereunder to such Invention and patent rights in 
any country, including without limitation, its rights under 
Section 5 hereof, unless GI reimburses Ixion for all of 
Ixion's expenses in filing or maintaining such patent rights 
in such country.

(b)     If the Invention is a Joint Invention, GI shall forfeit 
all rights hereunder (and Ixion shall be the sole owner 
thereof) to such Invention and patent rights in any country, 
including without limitation, its rights under Sections 4.5 
and 5 hereof, unless GI reimburses Ixion for one-half (1/2) 
of Ixion's expenses in filing or maintaining such patent 
rights in such country during the term of this Agreement.  
In addition, if GI ceases to pay for one-half of such 
expenses after the term of this Agreement, Ixion shall then 
become the sole owner of such Invention.

(c)     GI shall have the right to decide to reimburse Ixion 
pursuant to paragraph (a) or (b) at any time prior to the 
expiration of the option period set forth in Section 5.1 
(b).  In the event GI so reimburses Ixion, then such 
Invention and patent rights shall be included in any license 
resulting from the procedures set forth in Section 5.


4.5     Joint Invention License.  In the event GI fails to exercise its 
option for an exclusive license under Section 5.1 and continues to 
reimburse Ixion for one-half of the expenses in filing and 
maintaining any particular joint patent right, each party hereby 
grants to the other party a worldwide, non-exclusive license, with 
the right to sublicense, under and to the granting party's 
undivided one-half interest in any such Joint Inventions.
5.     Option Rights.

5.1     Option and Exercise Fee.  

(a)     Ixion grants to GI a first option to obtain an exclusive, 
worldwide, royalty-bearing license, with the right to 
sublicense, to any or all of Ixion's interests (except to 
the extent excluded by Section 4.4) in the IPSC Technology, 
the UF Patent Rights, Know-How and any improvements made by 
Ixion thereto ("Improvements"), including without 
limitation, the Program Technology, Patent Rights, Ixion 
Inventions, Joint Inventions and other inventions and 
developments made by Ixion during the term for performance 
of the Project Work (including extensions thereof) and 
regardless of whether such improvements are made in the 
course of the GI sponsored Project Work; provided, however, 
that with respect to Improvements made outside the course of 
the Project Work, only Improvements relating to the 
treatment of diabetes shall be included.  Upon expiration or 
termination of the relevant term for performance of the 
Project Work or any extension pursuant to Section 3.2, Ixion 
shall disclose to GI in reasonable written detail all such 
Improvements made outside the course of performing the 
Project Work along with delivery of the applicable final 
progress report under Section 3.4.  Upon request, Ixion 
shall also deliver to GI the cell line, or other biological 
materials, reasonably necessary, and solely for the purpose 
of, evaluating the offer.

(b)     GI's option must be exercised by GI by written notice to 
Ixion no later than ninety (90) days following receipt by GI 
of the applicable final report under Section 3.4, the 
supplemental Improvements information under Subsection 
5.1(a), and the biological materials requested by GI under 
Subsection 5.1(a).  GI shall evaluate the offer during such 
ninety (90) day period.

(c)     No later than ten (10) days following the exercise of the 
option by GI, Ixion shall, in good faith, offer commercial 
terms to GI for such license.  In the event there are 
Improvements relating to the treatment of diabetes made by 
Ixion other than in performance of the Project Work, such 
Improvements shall be offered as a package with the other 
rights, and the rights set forth in Section 5.1 (a) without 
such Improvements shall also be offered under separately 
identifiable terms and conditions.  GI and Ixion shall then 
diligently negotiate in good faith and with a view to 
entering into a definitive license agreement no later than 
ninety (90) days following the expiration of the ninety (90) 
day evaluation period or receipt of Ixion's offer, whichever 
is later.

(d)     If Ixion completed the Project Work on or before 12 months 
following the Effective Date,  GI shall pay Ixion ******** 
upon exercise of the option.

(e)     In addition, in the event Ixion develops any potential use 
of the IPSC Technology, the UF Patent Rights, the Know-How, 
or the Improvements which is useful in any area other than 
the treatment of diabetes ("Non-Diabetes Technology"), then 
if Ixion wishes to have such matter separately considered 
for licensing hereunder, it may give notice thereof to GI at 
any time.  If Ixion does not give such notice, the Non-
Diabetes Technology shall be included in the information 
disclosed to GI pursuant to paragraph 5.1(a) and will be 
subject to paragraphs 5.1(b) and 5.1.(c).  If Ixion gives 
such separate notice, GI shall have an option to obtain an 
exclusive, worldwide, royalty-bearing license, with the 
right to sublicense, to any or all of Ixion's interest in 
the Non-Diabetes Technology.  GI's option under this 
Subsection must be exercised by GI by written notice to 
Ixion no later than ninety (90) days following receipt by GI 
of (a) the applicable notice, and (b) a disclosure in 
reasonable detail of such Non-Diabetes Technology 
(including, if requested by GI, any cell lines or biological 
materials reasonably necessary, and solely for the purpose 
of, evaluating the offer), whichever is later.  GI shall 
evaluate the offer during such ninety-day period.  No later 
than ten days following the exercise of the option by GI, 
Ixion shall offer commercially reasonable terms to GI for a 
license to the Non-Diabetes Technology.  GI and Ixion shall 
then diligently negotiate in good faith with a view to 
entering into a definitive license agreement for the Non-
Diabetes Technology no later than ninety (90) days following 
the expiration of the ninety (90) day evaluation period or 
receipt of Ixion's offer, whichever is later.  If the 
parties do not enter into an agreement, GI shall have no 
further rights with respect to such matter, and Section 5.2 
shall not apply thereto.

5.2     Right of First Refusal.  

(a)     In the event GI and Ixion are unable to reach agreement 
and enter into a definitive license agreement within the 
ninety (90) day period for negotiation under Section 5.1(c), 
then Ixion shall be free to offer such rights to unrelated 
third parties subject to the terms of this Section. 
Improvements which are made by Ixion other than in 
performance of the Project Work are not subject to the 
requirements of this Section, and this Section shall only 
apply to the other rights required to be offered by Ixion to 
GI under Section 5.1 (the "ROFR Rights"). 

(b)     Ixion shall not license a third party to make, have made, 
use, sell or distribute, or otherwise commercialize the ROFR 
Rights on terms, taken as a whole, which are more favorable 
to such third party than the terms last offered to GI.  Both 
parties recognize that in evaluating the favorability of 
licensing terms, numerous factors need to be taken into 
account and given appropriate weight, including without 
limitation, the amount of upfront payments, the amount and 
timing of subsequent payments, the royalty rate(s), the 
definition of territory, the purpose and pricing of equity, 
the identity, experience and market position of the other 
party in the relevant markets, and the contribution of 
patent or other intellectual property rights material to the 
commercial success of Ixion.  Moreover, GI agrees that 
patent rights or other consideration that Ixion receives in 
return for the rights granted by Ixion should also be 
assigned reasonable value.  However, if a reasonable person 
is unable to compare a proposed offer to a third party to a 
prior offer made to GI by Ixion due to differences in the 
structure or terms of the offers for the purpose of 
determining whether the proposed third party offer is or is 
not more favorable to such third party, then Ixion shall 
offer GI such new terms to  pursuant to Subsection (c), 
below.

(c)     At any time before signing an agreement with a third party 
on terms, taken as a whole, which are (i) more favorable to 
such third party than the last offer to GI, or (ii) cannot 
be reasonably compared as described in Subsection (b), Ixion 
shall offer such terms to GI, and GI shall have thirty (30) 
days to accept such terms by written notice to Ixion and the 
parties shall upon such acceptance promptly enter into a 
definitive agreement containing such terms.  

5.4     No Other Rights.  Neither party shall have any rights to the 
inventions, patent rights, technology or know-how of the other party 
except as expressly set forth herein. 


6.     Warranties and Restrictions.

6.1     Ownership of Intellectual Property, Absence of Restrictions.  
Ixion represents and warrants that, to the best of its knowledge, 
all right, title and interest in the IPSC Technology and UF Patent 
Rights furnished by them are vested in Ixion or the University of 
Florida Research Foundation.   Ixion represents and warrants that 
the Research Support Agreement and the Patent License Agreement 
are in full, force and effect, and that it has the requisite 
authority to enter into and perform its obligations and the 
activities under this Agreement. Ixion represents and warrants 
that it has no knowledge of any obligations or duties to any third 
party, including without limitation, the University of Florida or 
the University of Florida Research Foundation, or other conflicts 
of interest which may conflict with its performance of this 
Agreement, and the grant of the option rights hereunder.  For the 
purpose of this Section, knowledge of Dr. Amon Peck, Mr. Weaver 
Gaines, Dr. Sharon Ogden or Dr. Stephen Maddock shall be imputed 
to Ixion.

      6.2     Exclusivity.  Ixion agrees not to perform discovery research on
the IPSC Technology on behalf of any third party during the term 
of performing the  Project Work and prior to the expiration or 
termination of the option rights under Section 5.1, but is not 
restricted from collaboration with academic or non-commercial 
investigators or otherwise limited with regard to its discovery 
research program. Ixion agrees not to perform discovery research 
utilizing any Program Technology or Know-How owned solely by GI 
except in the course of performing the Project Work.  All IPSC 
Technology shall be furnished to such academic or non-commercial 
investigators under the terms of an agreement which is not 
materially different than a form which has been previously 
approved in writing by GI.

6.3     University of Florida Agreements.  Ixion agrees to fully comply 
with the material terms and conditions of the Patent License 
Agreement and the Research Support Agreement, and to indemnify and 
defend GI against any expenses, costs, claims or liabilities 
incurred by GI in connection with any breach thereof by Ixion.  
Ixion agrees to immediately notify GI of receipt of any default 
notices under such agreements, to provide GI with the opportunity 
to intervene and cure such defaults, in GI's sole discretion, and 
shall use all reasonable efforts to obtain the consent of the 
University of Florida and the University of Florida Research 
Foundation that Ixion shall have the right to grant to GI the 
right to cure any such defaults by Ixion prior to any termination 
thereof.

7.     Confidentiality and Publications.

7.1     Confidentiality.  The parties will maintain the confidential 
information and materials of the other party in confidence for a 
period of five (5) years following termination of the performance 
of the Project Work, and will not divulge, use or distribute the 
information or materials to others without the written permission 
of the other disclosing party, except pursuant to the terms and 
objectives of this Agreement.  This obligation does not apply to 
any information that:

(a)     was known or used by the receiving party prior to its date 
of disclosure to the receiving party, as evidenced by the 
prior written records of the receiving party; or

(b)     either before or after the date of disclosure to the 
receiving party, is lawfully disclosed to the receiving 
party by an independent, unaffiliated third party rightfully 
in possession of the information which has the right to make 
the disclosure; or

(c)     either before or after the date of disclosure to the 
receiving party, becomes published or generally known to the 
public through no fault or omission of the receiving party;

provided that if any such information is required to be disclosed 
by the receiving party to comply with applicable laws, the other 
party shall be notified and given the opportunity to intervene and 
protect its rights, and such disclosure shall be deemed to be 
authorized hereunder.

7.2     Publications.  The parties agree that any proposed publications 
resulting from the Project Work, including abstracts for public 
oral presentations, shall be submitted to the other party prior to 
submission to a journal or third party.  Any proposed submission 
will be delayed no more than sixty (60) days for the purposes of 
preparing patent applications on information contained therein, if 
in the reasonable judgement of GI or Ixion, such patent 
applications are considered necessary.  If, in the reasonable 
judgment of GI or Ixion, the application cannot be completed 
within the sixty (60) day period, then GI or Ixion may request a 
thirty (30) day extension, which shall not be unreasonably 
withheld by the publishing party.

7.3     Authorship.  Any publications based on research performed under 
this Agreement will acknowledge authorship according to general 
scientific procedures for such publications.

8.     Termination.

8.1     Termination for Cause.  Either party may terminate this 
Agreement for cause at any time upon thirty (30) days prior 
written notice to the other party, which notice shall specify the 
alleged breach in reasonable detail.  "Cause" shall mean material 
breach by a party of this Agreement where such breach, if curable, 
is not remedied within such thirty (30) day period, and the thirty 
(30) day period shall have passed after the receipt of such notice 
during which the defaulting party fails to cure such specific 
breach.

8.2     Effect of Termination.  Upon termination, neither Ixion nor GI 
shall have any further obligations under this Agreement, except 
for (a) liabilities accrued through the date of termination and 
(b) the obligations which by their terms survive termination, 
including, without limitation, the applicable confidentiality 
provisions, shall survive termination.   Upon termination of this 
Agreement or, in the event that GI does not exercise its option 
for an exclusive license pursuant to Section 5.1 upon expiration 
of this Agreement, (i) Ixion shall promptly return to GI all 
Confidential Information and Know-How of GI and any copies thereof 
which are not jointly owned by Ixion; (ii) GI shall promptly 
return to Ixion all Confidential Information and Know-How of Ixion 
and any copies thereof which are not jointly owned by GI; and 
(iii) except as provided in Section 4.5,  neither party shall have 
any further rights to use any such Confidential Information or 
Know-How or any patent rights relating thereto of the other party 
for any purpose whatsoever. 

9.     Miscellaneous.

9.1     Liability for Damages.  Each Party will be liable for any 
damages incurred by it that occur in the course of this contract 
whether resulting from its own negligence or not.  EXCEPT FOR THE 
EXPRESS WARRANTIES SET FORTH IN THIS AGREEMENT, NEITHER PARTY 
MAKES ANY WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT 
LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A 
PARTICULAR PURPOSE OR AGAINST INFRINGEMENT WITH RESPECT TO THE 
MATERIALS OR INFORMATION FURNISHED BY A PARTY UNDER THIS 
AGREEMENT.  Neither party will be liable for any consequential, 
incidental or special damages except for a breach of Section 7.
9.2     No Publicity.  Upon execution hereof, Ixion may issue a press 
release describing this Agreement in a form satisfactory to GI in 
the exercise of its reasonable judgment.  Otherwise, except as 
required by law, neither party will originate any publicity 
relating to the other party without prior written approval of the 
other party, which approval shall not be unreasonably withheld.

9.3     Successors and Assigns.  This Agreement will be binding upon and 
inure to the benefit of the parties and their respective heirs, 
executors, administrators, legal representatives, successors and 
assigns.

9.4     Assignment.  Neither this Agreement nor any of its contract 
rights or obligations may be assigned by a party without the prior 
written consent of the other parties, except to a party who 
acquires substantially all of the business of the assigning party.

9.5     Applicable Law.  This Agreement will be interpreted in 
accordance with the laws of the Commonwealth of Massachusetts.

9.6     Entire Agreement.  This Agreement supersedes all prior 
agreements, written or oral, between the parties relating to the 
same subject matter and cannot be modified, changed or discharged, 
in whole or in part, except by an agreement in writing signed by 
the parties.

9.7     Notice.  Any notice or other communication regarding this 
Agreement shall be in writing and delivered to the addressee at 
the following address:

If to GI:
Genetics Institute, Inc.
87 CambridgePark Drive
Cambridge, MA 02140 USA
ATTN:  General Counsel

If to Ixion:          Ixion Biotechnology, Inc.
12085 Research Drive
Alachua, FL 32615
ATTN: President



IN WITNESS WHEREOF, the parties have caused this Agreement to be 
executed in their names by their duly authorized representatives as of the 
effective date.


GENETICS INSTITUTE, INC.


By: _________________________________     Date: ___________________

Name: ______________________________

Title: _______________________________


IXION BIOTECHNOLOGY, INC.


By: _________________________________     Date: ___________________

Name: ______________________________

Title: _______________________________


l:\collab\ixionbio.530


     Schedule A

This Schedule sets out the details of the Project Work.












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