EXHIBIT 8

CONFIDENTIAL PORTIONS OF THIS EXHIBIT HAVE BEEN OMITTED PURSUANT TO REGULATION
240.25B-2B OF THE SECURITIES EXCHANGE ACT OF 1934. [*] INDICATES OMITTED
MATERIAL THAT IS THE SUBJECT OF A CONFIDENTIAL TREATMENT REQUEST AND IS FILED
SEPARATELY WITH THE COMMISSION.

                                                               Execution Copy 2A



                               LICENSE AGREEMENT


                                    BETWEEN


                        RIBOZYME PHARMACEUTICALS, INC.


                                      AND


                         MEDIZYME PHARMACEUTICALS LTD.


                               TABLE OF CONTENTS


                                                                        
 1.  DEFINITIONS.........................................................   1
 2.  RPI LICENSE TO NEWCO................................................   6
 3.  INTELLECTUAL PROPERTY...............................................   8
 4.  NON-COMPETITION/AFTER ACQUIRED TECHNOLOGY...........................   8
 5.  FINANCIAL PROVISIONS................................................   9
 6.  RIGHT OF INSPECTION AND AUDIT.......................................  10
 7.  REPRESENTATIONS AND WARRANTIES......................................  11
 8.  TERM AND TERMINATION................................................  13
 9.  CONFIDENTIAL INFORMATION............................................  16
10.  GOVERNING LAW AND JURISDICTION; ARBITRATION.........................  17
11.  IMPOSSIBILITY OF PERFORMANCE - FORCE MAJEURE........................  19
12.  ASSIGNMENT..........................................................  19
13.  NOTICES.............................................................  19
14.  MISCELLANEOUS.......................................................  21



THIS AGREEMENT made this ___ day of January 2000

between:

(1)  Ribozyme Pharmaceuticals, Inc., a Delaware corporation having its principal
     place of business at 2950 Wilderness Place, Boulder, Colorado 80301.


(2)  Medizyme Pharmaceuticals Ltd., a Bermuda exempted limited liability company
     incorporated under the laws of Bermuda and having its registered office at
     Clarendon House, Church St., Hamilton, Bermuda.


                                   RECITALS:
                                   ---------

A.   Simultaneously herewith, RPI, Elan, EIS, and Newco (capitalized terms used
     herein are defined below) are entering into the JDOA for the purpose of
     recording the terms and conditions of the joint venture and of regulating
     their relationship with each other and certain aspects of the affairs of,
     and their dealings with Newco.


B.   Newco desires to enter into this Agreement with RPI so as to permit Newco
     to utilize the RPI Intellectual Property in making, having made, importing,
     using, offering for sale and selling the Products in the Field in the
     Territory.


C.   Simultaneously herewith Newco and Elan are entering into the Elan License
     Agreement relating to Newco's use of the Elan Intellectual Property.


     Now, Therefore, the Parties agree as follows:


1.   DEFINITIONS


1.1. In this Agreement unless the context otherwise requires:


     "Affiliate" shall mean any corporation or entity controlling, controlled or
     under the common control of Elan or RPI, as the case may be. For the
     purpose of this definition, "control" shall mean direct or indirect
     ownership of fifty percent (50%) or more of the stock or shares entitled to
     vote for the election of directors. For purposes of this Agreement, Newco
     is not an Affiliate of Elan or EIS.


     "Agreement" shall mean this license agreement (which expression shall be
     deemed to include the Recitals and Schedules hereto).


     [ ]shall mean a Ribozyme targeted against [ * ]


     "Business Plan" shall have the meaning, as such term is defined in the
     JDOA.


     "Confidential Information" shall have the meaning, as such term is defined
     in Clause 9.

     "Definitive Documents" shall mean the definitive agreements relating to the
     transactions including finance, stock purchase, research and license
     agreements.


     "EIS" shall mean Elan International Services, Limited, a Bermuda exempted
     limited liability company incorporated under the laws of Bermuda and having
     its registered office at St James Court, Flatts, Smiths, FL04 Bermuda.

     "Elan" shall mean Elan, plc and EPIL, and their respective successors and
     permitted assigns.

     "Elan, plc" shall mean Elan Corporation, plc, a public limited company
     incorporated under the laws of Ireland acting through its division Elan
     Pharmaceutical Technologies.

     "Effective Date" shall mean the date of this Agreement.

     "Elan Improvements" shall have the meaning as such term is defined in the
     Elan License Agreement.

     "Elan Intellectual Property" shall have the meaning as such term is defined
     in the Elan License Agreement.

     "Elan Know-How" shall have the meaning as such term is defined in the Elan
     License Agreement.

     "Elan License" shall have the meaning set forth in Clause 2.1 of the Elan
     License Agreement.

     "Elan Patents" shall have the meaning as such term is defined in the Elan
     License Agreement.

     "Elan Research License" shall have the meaning as such term is defined in
     the Elan License Agreement.

     "EPIL" shall mean Elan Pharma International Limited a private limited
     company incorporated under the laws of Ireland.

     "Existing RPI License Agreements" shall mean the following agreements: (a)
     License Agreement, dated September 1993, between RPI and Competitive
     Technologies Inc., as amended; (b) License Agreement, dated January 15,
     1993, between RPI and Massachusetts Institute of Technology; (c) License
     Agreement, dated February 7, 1992, between RPI and Garching Instruments
     GmbH, as amended;


     and (d) License Agreement, dated November 11, 1994, between Ribonetics GmbH
     and European Molecular Biological Laboratory, as assigned to RPI.

     "Field" shall mean the [ * ] of the Target Ribozyme using the System
     for the down regulation of HER-2.

     "Financial Year" shall mean each year commencing on 1 January (or in the
     case of the first Financial Year, the Effective Date) and expiring on 31
     December of each year.

     "HER-2" shall mean Human Epidermal Growth Factor Receptor Type 2.

     "In Market" shall mean the sale of the Product in the Territory by Newco or
     its Affiliates, or where applicable by a permitted sub-licensee, to an
     unaffiliated third party, such as (i) the end-user consumer of the Product
     (ii) a wholesaler, managed care organization, hospital or pharmacy or other
     third party who effects the final commercial sale to the end-user consumer
     of the Product, and shall exclude the transfer pricing of the Product(s) by
     Newco to an Affiliate or a sub-licensee.

     "JDOA" shall mean that certain Joint Development and Operating Agreement,
     of even date herewith, by and between Elan, RPI, EIS and Newco.

     "Licensed Technologies" shall mean the Elan Intellectual Property and the
     RPI Intellectual Property.

     "Licenses" shall mean the Elan License, the Elan Research License and the
     RPI License.

     "Management Committee" shall have the meaning, as such term is defined in
     the JDOA.

     "Net Sales" shall mean that sum determined by deducting the following
     deductions from the aggregate gross In Market sales proceeds billed for the
     Products by Newco or its Affiliate or a permitted sub-licensee, as the case
     may be:

     (i)    transportation charges or allowances, if any, included in such
            price;

     (ii)   trade, quantity or cash discounts, broker's or agent's commissions,
            if any, allowed or paid;

     (iii)  credits or allowances, if any, given or made on account of price
            adjustments, returns, promotional discounts, rebates and any and all
            federal, state or local government rebates whether in existence now
            or enacted at any time during the term of the Licenses; and

     (iv)   any tax, excise or governmental charge upon or measured by the sale,


     transportation, delivery or use of the Products.

     "Newco" shall mean Medizyme Pharmaceuticals Ltd., Bermuda exempted limited
     liability company incorporated under the laws of Bermuda.

     "Newco Intellectual Property" shall mean the Newco Patents and the Newco
     Know- How.

     "Newco Know-How" shall mean any and all rights owned, licensed or
     controlled by Newco to any scientific, pharmaceutical or technical
     information, data, discovery, invention (whether patentable or not),
     technique, process, procedure, system, formulation or design that is not
     generally known to the public arising out of the conduct of the Project by
     any person that does not constitute Elan Improvements or RPI Improvements.

     "Newco Patents" shall mean any and all patents and patent applications
     arising out of the conduct of the Project by any person that does not
     constitute Elan Improvements or RPI Improvements and all rights therein,
     and including all extensions, continuations, continuations-in-part,
     divisionals, patents-of-additions, re-examinations, re-issues,
     supplementary protection certificates and foreign counterparts thereto
     owned or licensed to Newco.

     "Oligonucleotide" shall mean a [ * ] non-protein, non-peptide encoding
     nucleic acid molecule including those with [ * ] used as a human
     therapeutic and/or prophylactic compound comprising between [ * ] including
     oligonucleotide analogs which may include natural or non-natural
     heterocycles, sugars and/or backbone linkage modifications, capable of
     specifically inhibiting the function, activity or expression of a gene. For
     the purposes hereof Oligonucleotide (a) shall include [ * ], and (b) shall
     exclude polymers in which the linkages are [ ]

     "Party" shall mean RPI or Newco, as the case may be, and "Parties" shall
     mean RPI and Newco.

     "Product(s)" shall mean the pharmaceutical formulation incorporating the
     Target Ribozyme and incorporated within or packaged with the System.

     "Project" shall mean all activities as undertaken by Elan, RPI and Newco in
     order to develop the Products.

     "R&D Committee" shall have the meaning, as such term is defined in the
     JDOA.

     "R&D Plan" shall have the meaning, as such term is defined in the JDOA.

     "R&D Program" shall mean any research and development program commenced by


     Newco pursuant to the Project.

     "Ribozyme" shall mean an [ * ] which is directed to inhibit, by catalytic
     cleavage, the translation of mRNA coding for a gene. For the avoidance of
     doubt, Ribozyme does not include [ * ]

     "RPI" shall mean Ribozyme Pharmaceuticals, Inc., a Delaware corporation and
     its Affiliates, excluding Newco.

     "RPI Improvements" shall mean improvements to the RPI Patents and/or the
     RPI Know-How developed (i) by RPI whether or not pursuant to the Project,
     (ii) by Newco or Elan or by a third party (under contract with Newco)
     pursuant to the Project, and/or (iii) jointly by any combination of RPI,
     Elan or Newco pursuant to the Project, except as limited by agreements with
     third parties.

     Subject to third party agreements, RPI Improvements shall constitute part
     of RPI Intellectual Property and be included in the license of the RPI
     Intellectual Property pursuant to Clause 2.1 solely for the purposes set
     forth therein. If the inclusion of a RPI Improvement in the license of RPI
     Intellectual Property is restricted or limited by a third party agreement,
     RPI shall use reasonable commercial efforts to minimize any such
     restriction or limitation.

     "RPI Intellectual Property" shall mean the RPI Know-How, the RPI Patents
     and the RPI Improvements.

     "RPI Know-How" shall mean any and all rights owned, licensed or controlled
     by RPI to any scientific, pharmaceutical or technical information, data,
     discovery, invention (whether patentable or not), technique, process,
     procedure, system, formulation or design relating to the Ribozyme that is
     not generally known to the public.

     "RPI License" shall have the meaning set forth in Clause 2.1.

     "RPI Patents" shall mean any and all patents and patent applications as set
     forth in Schedule 1, and all rights therein, and including all extensions,
     continuations, continuations-in-part, divisionals, patents-of-additions,
     re-examinations, re-issues, supplementary protection certificates and
     foreign counterparts thereto owned by or licensed to RPI containing claims
     relating to the Ribozyme.

     "RPI Third Party Agreements" shall mean all agreements existing as of the
     date hereof between RPI and third parties, including Affiliates, that
     relate to or affect the Licenses, the Product, the Ribozyme for use in the
     Field, and/or the transactions contemplated hereunder, including, without
     limitation, the Existing RPI License Agreements.

     "Strategic Investor" shall mean a company, corporation or person investing
     in RPI


     or Newco for strategic purposes as evidenced by, inter alia, and shall
     exclude financial institutions but not any of their direct or indirect
     assignees or transferees that are not financial institutions.

     "Substitute Ribozyme" shall have the meaning set forth in Clause 2.2 of the
     JDOA.

     "Substitute Target" shall have the meaning set forth in Clause 2.2 of the
     JDOA.

     "System" shall mean an ambulatory drug delivery system for direct
     attachment to the body of a patient having a flexible diaphragm drug
     reservoir, which is capable of delivering factory pre-programmed continuous
     amounts of drug upon activation as disclosed and described in the Elan
     Patents set forth in Schedule 1 of the Elan License Agreement.


     "Target Ribozyme" shall mean a Ribozyme directed to HER-2 unless and until
     a [ * ] directed to a [ * ] is designated to be the subject of the Project
     pursuant to the designation of a [ * ] and [ * ] under the provisions of
     Clause 2.2 of the JDOA, in which case the term [ * ] shall mean such
     designated [ * ] directed to [ * ]

     "Technological Competitor of Elan" shall mean a company, corporation or
     person listed in Schedule 2 and successors thereof or any additional broad-
     based technological competitor of Elan added to such Schedule from time to
     time upon mutual agreement of the Parties.

     "Term" shall have the meaning set forth in Clause 8.

     "Territory" shall mean all the countries of the world.

     "United States Dollar" and "US$" shall mean the lawful currency for the
     time being of the United States of America.


1.2. In this Agreement:


     1.2.1  The singular includes the plural and vice versa, and the masculine
            includes the feminine and vice versa and the neuter includes the
            masculine and the feminine.

     1.2.2  Any reference to a Clause or Schedule shall, unless otherwise
            specifically provided, be to a Clause or Schedule of this Agreement.

     1.2.3  The headings of this Agreement are for ease of reference only and
            shall not affect its construction or interpretation.


2.   RPI LICENSE TO NEWCO


2.1. RPI hereby grants to Newco for the Term an exclusive license (including the
     limited right to grant sublicenses under Clause 2.6 below) (the "RPI
     License") to the RPI Intellectual Property to make, have made, import, use,
     offer for sale and sell the Products in the Field in the Territory, subject
     to any contractual obligations that RPI has as of the Effective Date.


2.2  RPI hereby confirms that no obligations are in effect on the date hereof
     between RPI and an unaffiliated third party relating to the Ribozyme for
     use in the Field, other than the Existing RPI License Agreements.

     RPI shall be responsible for payments related to the financial provisions
     and obligations under the RPI Third Party Agreements (including amendments
     thereto), including, without limitation, any royalty or other compensation
     obligations. RPI shall satisfy its responsibility to make such payments by
     offsetting against such payments the royalties that are otherwise due to
     RPI by Newco pursuant to Clause 5 below.

     For the avoidance of doubt, royalties, milestones or other payments which
     arise from the process of the commercialization or exploitation of products
     under the RPI Third Party Agreements (for example, a milestone payment
     payable upon successful completion of Phase II clinical trials, the filing
     of an NDA application, obtaining NDA approval, or first commercial sale)
     shall be payments for which RPI will be responsible under this Clause 2.2.

2.3  To the extent royalty or other compensation obligations that are payable to
     third parties with respect to the RPI Intellectual Property would be
     triggered after the Effective Date, under any third party agreement entered
     into by RPI after the Effective Date (the "RPI Post-Effective Date
     Agreements"), by a proposed use of such RPI Intellectual Property in
     connection with the Project, RPI will inform Newco of such royalty or
     compensation obligations. If Newco agrees to utilize such RPI Intellectual
     Property in connection with the Project, Newco will be responsible for the
     payment of such royalty or other compensation obligations relating thereto.

     For the avoidance of doubt, royalties, milestones or other payments which
     arise from the process of the commercialization or exploitation of products
     under the RPI Post-Effective Date Agreements (for example, a milestone
     payment payable upon successful completion of Phase II clinical trials, the
     filing of an NDA application, obtaining NDA approval, or first commercial
     sale) shall be payments for which Newco will be responsible under this
     Clause 2.3.

2.4  Elan shall be a third party beneficiary under this Agreement and shall have
     the right to cause Newco to enforce Newco's rights under this Agreement
     against RPI.

2.5  Notwithstanding anything contained in this Agreement to the contrary, RPI
     shall have the right outside the Field and subject to the non-competition
     provisions of Clause 4


     to exploit and grant licenses and sublicenses of the RPI Intellectual
     Property.

     For the avoidance of doubt, Newco shall have no right to use the RPI
     Intellectual Property outside the Field.

2.6  Newco shall not assign any of its rights under the RPI License relating to
     the RPI Intellectual Property without the prior written consent of Elan and
     RPI.

     Newco shall not sublicense any of its rights under the RPI License relating
     to the RPI Intellectual Property without the prior written consent of Elan
     and RPI, which consent shall not be unreasonably withheld or delayed;
     provided, however, that the consent of Elan may be withheld in Elan's sole
     discretion in the case of a proposed sublicense of such rights to a
     Technological Competitor of Elan.

2.7  Any agreement between Newco and any permitted third party for the
     development or exploitation of the RPI Intellectual Property shall require
     such third party to maintain the confidentiality of all information
     concerning the RPI Intellectual Property.

     Insofar as the obligations owed by Newco to RPI are concerned, Newco shall
     remain responsible for all acts and omissions of any permitted sub-
     licensee, including Elan, as if they were acts and omissions by Newco.

3.   INTELLECTUAL PROPERTY

3.1  Ownership of Intellectual Property:
     -----------------------------------

     3.1.1  Newco shall own the Newco Intellectual Property.

     3.1.2  RPI shall own the RPI Intellectual Property.


4.   NON-COMPETITION/AFTER ACQUIRED TECHNOLOGY


4.1  Subject to Clause 4.3, during the Term, RPI, alone or in conjunction with a
     third party, shall not develop or commercialize [ * ] to inhibit the
     translation of [ * ]

4.2  If after the Effective Date RPI acquires know-how or patent rights from a
     third party relating to the System, or if RPI acquires or merges with a
     third party entity that owns or has license rights to know-how or patent
     rights relating to the System, then RPI shall offer to license such know-
     how and patent rights to Newco (subject to existing contractual
     obligations) solely for Newco to research, develop and otherwise engage in
     the commercialization of the Product solely for use in the Field on such
     terms as would be offered to an independent third party negotiating in good
     faith on an arms-length basis.


4.3  If Newco determines that Newco should not acquire such license as is
     referred to in Clause 4.2, then RPI shall be free to fully exploit such
     know-how and patent rights, with the Elan Intellectual Property licensed to
     Newco, whether inside or outside the Field and to grant to third parties
     licenses and sublicenses with respect thereto.


5.   FINANCIAL PROVISIONS


5.1  Royalties:
     ----------

     The intent of the Parties is to provide for equivalent economic benefit to
     each of RPI and Elan, except in respect of the License Fee (as defined in
     the Elan License Agreement). Accordingly, the Management Committee shall
     decide by unanimous consent on the royalties which shall be payable by
     Newco to RPI and Elan on Net Sales. When determining such royalties, the
     Management Committee shall consider the royalty obligations of RPI under
     the Existing RPI License Agreements, provided that any royalties payable by
     Newco to RPI and Elan hereunder shall be distributed in equal amount to
     each of RPI and Elan. RPI represents and warrants to Newco and Elan that
     RPI's royalty obligations under the Existing RPI License Agreements do not
     exceed an aggregate of [ * ]

5.2  Payment of royalties pursuant to Clause 5.1 shall be made quarterly in
     arrears during each Financial Year within 30 days after the expiry of the
     calendar quarter. The method of payment shall be by wire transfer to an
     account specified by RPI. Each payment made to RPI shall be accompanied by
     a true accounting of all Products sold by Newco's permitted sublicensees,
     if any, during such quarter.

     Such accounting shall show, on a country-by-country and Product-by-Product
     basis, Net Sales (and the calculation thereof) and each calculation of
     royalties with respect thereto, including the calculation of all
     adjustments and currency conversions.

5.3  Newco shall maintain and keep clear, detailed, complete, accurate and
     separate records for a period of 3 years:

     5.3.1  to enable any royalties on Net Sales that shall have accrued
            hereunder to be determined; and


     5.3.2  to enable any deductions made in the Net Sales calculation to be
            determined.

5.4  All payments due hereunder shall be made in United States Dollars. Payments
     due on Net Sales of any Product for each calendar quarter made in a
     currency other than United States Dollars shall first be calculated in the
     foreign currency and then converted to United States Dollars on the basis
     of the exchange rate in effect on the last working day for such quarter for
     the purchase of United States Dollars with such


     foreign currency quoted in the Wall Street Journal (or comparable
     publication if not quoted in the Wall Street Journal) with respect to the
     currency of the country of origin of such payment, determined by averaging
     the rates so quoted on each business day of such quarter.

5.5  If, at any time, legal restrictions in the Territory prevent the prompt
     payment when due of royalties or any portion thereof, the Parties shall
     meet to discuss suitable and reasonable alternative methods of paying RPI
     the amount of such royalties. In the event that Newco is prevented from
     making any payment under this Agreement by virtue of the statutes, laws,
     codes or government regulations of the country from which the payment is to
     be made, then such payments may be paid by depositing them in the currency
     in which they accrue to RPI's account in a bank acceptable to RPI in the
     country the currency of which is involved or as otherwise agreed by the
     Parties.

5.6  RPI and Newco agree to co-operate in all respects necessary to take
     advantage of any double taxation agreements or similar agreements as may,
     from time to time, be available.

5.7  Any taxes payable by RPI on any payment made to RPI pursuant to this
     Agreement shall be for the account of RPI. If so required by applicable
     law, any payment made pursuant to this Agreement shall be made by Newco
     after deduction of the appropriate withholding tax, in which event the
     Parties shall co-operate to obtain the appropriate tax clearance as soon as
     is practicable. On receipt of such clearance, Newco shall forthwith arrange
     payment to RPI of the amount so withheld.


6.   RIGHT OF INSPECTION AND AUDIT


6.1  Once during each Financial Year, or more often not to exceed quarterly as
     reasonably requested by RPI, Newco shall permit RPI or its duly authorized
     representatives, upon reasonable notice and at any reasonable time during
     normal business hours, to have access to inspect and audit the accounts and
     records of Newco and any other book, record, voucher, receipt or invoice
     relating to the calculation of the royalty payments on Net Sales submitted
     to RPI.

     Any such inspection of Newco's records shall be at the expense of RPI,
     except that if any such inspection reveals a deficiency in the amount of
     the royalty actually paid to RPI hereunder in any Financial Year quarter of
     5% or more of the amount of any royalty actually due to RPI hereunder, then
     the expense of such inspection shall be borne solely by Newco. Any amount
     of deficiency shall be paid promptly to RPI by Newco.

     If such inspection reveals a surplus in the amount of royalties actually
     paid to RPI by Newco, RPI shall reimburse Newco the surplus within 15 days
     after determination.


6.2  In the event of any unresolved dispute regarding any alleged deficiency or
     overpayment of royalty payments hereunder, the matter will be referred to
     an independent firm of chartered accountants chosen by agreement of RPI and
     Elan for a resolution of such dispute. Any decision by the said firm of
     chartered accountants shall be binding on the Parties.

7.   REPRESENTATIONS AND WARRANTIES


7.1  RPI represents and warrants to Newco and Elan as follows:


     7.1.1  RPI has the right to grant the RPI License;


     7.1.2  there are no agreements between RPI and any third party that
            conflict with the RPI License;

     7.1.3  the patents and patent applications included in the RPI Patents are
            free and clear of encumbrances and liens;

     7.1.4  to the best of RPI's knowledge, there are no proceedings or
            threatened proceedings against RPI in connection with the RPI
            Intellectual Property in relation to the Field; and

     7.1.5  the RPI Intellectual Property constitutes all intellectual property
            owned or licensed by RPI that are reasonably applicable to the
            Project as it relates to the Ribozyme.

7.2  RPI shall not amend, modify, waive or terminate any of its rights under any
     RPI Third Party Agreement without the prior written consent of the
     Management Committee (by the unanimous vote of its members); provided,
     however, that such consent will be required only if such amendment,
     modification, waiver or termination would have an adverse effect,
     individually or in the aggregate, on the financial condition, prospects,
     results of operation, business, and/or assets (including, without
     limitation, the Licensed Technologies, and/or the Newco Intellectual
     Property) of Newco.

7.3. RPI agrees and represents and warrants to Newco and Elan as follows: (i)
     the RPI Third Party Agreements are valid and in full force and effect, (ii)
     there are no existing or claimed defaults by RPI, and to RPI's knowledge by
     any other party, under the RPI Third Party Agreements; and no event, act or
     omission has occurred which (with or without notice, lapse of time or the
     happening or occurrence of any other event) would result in a default under
     the RPI Third Party Agreements by RPI, or to RPI's knowledge by any other
     party, and (iii) RPI shall during the term of the Licenses, fully comply
     with all terms and conditions of the RPI Third Party Agreements; RPI


     will enforce its rights under the RPI Third Party Agreements; and RPI will
     not assign its rights under the RPI Third Party Agreements. RPI will keep
     Newco and Elan fully informed with respect to RPI's arrangements under the
     RPI Third Party Agreements that relate to Newco and/or the transactions
     contemplated hereunder. RPI shall provide Newco and Elan with any written
     notices delivered by any party under the RPI Third Party Agreements, which
     written notices relate to or could affect Newco and/or the transactions
     contemplated hereunder.


7.4  In addition to any other indemnities provided for herein, RPI shall
     indemnify and hold harmless Newco and its Affiliates and their respective
     employees, agents, officers and directors from and against any claims,
     losses, liabilities or damages (including reasonable attorney's fees and
     expenses) incurred or sustained by Newco arising out of or in connection
     with any:

     7.4.1  breach of any representation, covenant, warranty or obligation by
            RPI hereunder; or

     7.4.2  act or omission on the part of RPI or any of its respective
            employees, agents, officers and directors in the performance of this
            Agreement.

7.5  In addition to any other indemnities provided for herein, Newco shall
     indemnify and hold harmless RPI and its Affiliates and their respective
     employees, agents, officers and directors from and against any claims,
     losses, liabilities or damages (including reasonable attorney's fees and
     expenses) incurred or sustained by RPI arising out of or in connection with
     any:

     7.5.1  breach of any representation, covenant, warranty or obligation by
            Newco hereunder; or

     7.5.2  act or omission on the part of Newco or any of its agents or
            employees in the performance of this Agreement.

7.6  The Party seeking an indemnity shall:


     7.6.1  fully and promptly notify the other Party of any claim or
            proceeding, or threatened claim or proceeding;

     7.6.2  permit the indemnifying Party to take full care and control of such
            claim or proceeding;

     7.6.3  co-operate in the investigation and defense of such claim or
            proceeding;

     7.6.4  not compromise or otherwise settle any such claim or proceeding
            without the prior written consent of the other Party, which consent
            shall not be unreasonably withheld conditioned or delayed; and


     7.6.5  take all reasonable steps to mitigate any loss or liability in
            respect of any such claim or proceeding.

7.7  EXCEPT AS SET FORTH IN THIS CLAUSE 7, RPI IS GRANTING THE LICENSES
     HEREUNDER ON AN "AS IS" BASIS WITHOUT REPRESENTATION OR WARRANTY WHETHER
     EXPRESS OR IMPLIED INCLUDING WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A
     PARTICULAR PURPOSE, OR INFRINGEMENT OF THIRD PARTY RIGHTS, AND ALL SUCH
     WARRANTIES ARE EXPRESSLY DISCLAIMED.

7.8  NOTWITHSTANDING ANYTHING TO THE CONTRARY IN THIS AGREEMENT, RPI AND NEWCO
     SHALL NOT BE LIABLE TO THE OTHER BY REASON OF ANY REPRESENTATION OR
     WARRANTY, CONDITION OR OTHER TERM OR ANY DUTY OF COMMON LAW, OR UNDER THE
     EXPRESS TERMS OF THIS AGREEMENT, FOR ANY CONSEQUENTIAL, SPECIAL OR
     INCIDENTAL OR PUNITIVE LOSS OR DAMAGE (WHETHER FOR LOSS OF PROFITS OR
     OTHERWISE) AND WHETHER OCCASIONED BY THE NEGLIGENCE OF THE RESPECTIVE
     PARTIES, THEIR EMPLOYEES OR AGENTS OR OTHERWISE.

8.   TERM AND TERMINATION

8.1  The term of this Agreement shall commence as of the Effective Date and
     shall, subject to the rights of termination outlined in this Clause 8,
     expire on a Product-by-Product basis and on a country-by-country basis on
     the last to occur of:

     8.1.1  [ * ] starting from the date of the first commercial sale of the
            Product in the country concerned; or

     8.1.2  the date of expiration of the last to expire of the patents included
            in the Elan Patents and the Elan Improvements and/or the RPI Patents
            and the RPI Improvements

     ("the Term")

8.2  If either Party commits a Relevant Event, the other Party shall have, in
     addition to all other legal and equitable rights and remedies hereunder,
     the right to terminate this Agreement upon 30 days' prior written notice to
     the defaulting Party.

8.3  For the purpose of this Clause 8, a "Relevant Event" is committed or
     suffered by a Party if:

     8.3.1  it commits a material breach of its obligations under this Agreement
            or the


     7.6.5  take all reasonable steps to mitigate any loss or liability in
            respect of any such claim or proceeding.


7.7  EXCEPT AS SET FORTH IN THIS CLAUSE 7, RPI IS GRANTING THE LICENSES
     HEREUNDER ON AN "AS IS" BASIS WITHOUT REPRESENTATION OR WARRANTY WHETHER
     EXPRESS OR IMPLIED INCLUDING WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A
     PARTICULAR PURPOSE, OR INFRINGEMENT OF THIRD PARTY RIGHTS, AND ALL SUCH
     WARRANTIES ARE EXPRESSLY DISCLAIMED.


7.8  NOTWITHSTANDING ANYTHING TO THE CONTRARY IN THIS AGREEMENT, RPI AND NEWCO
     SHALL NOT BE LIABLE TO THE OTHER BY REASON OF ANY REPRESENTATION OR
     WARRANTY, CONDITION OR OTHER TERM OR ANY DUTY OF COMMON LAW, OR UNDER THE
     EXPRESS TERMS OF THIS AGREEMENT, FOR ANY CONSEQUENTIAL, SPECIAL OR
     INCIDENTAL OR PUNITIVE LOSS OR DAMAGE (WHETHER FOR LOSS OF PROFITS OR
     OTHERWISE) AND WHETHER OCCASIONED BY THE NEGLIGENCE OF THE RESPECTIVE
     PARTIES, THEIR EMPLOYEES OR AGENTS OR OTHERWISE.


8.   TERM AND TERMINATION

8.1  The term of this Agreement shall commence as of the Effective Date and
     shall, subject to the rights of termination outlined in this Clause 8,
     expire on a Product-by-Product basis and on a country-by-country basis on
     the last to occur of:

     8.1.1  15 years starting from the date of the first commercial sale of the
            Product in the country concerned; or

     8.1.2  the date of expiration of the last to expire of the patents included
            in the Elan Patents and the Elan Improvements and/or the RPI Patents
            and the RPI Improvements

     ("the Term")

8.2  If either Party commits a Relevant Event, the other Party shall have, in
     addition to all other legal and equitable rights and remedies hereunder,
     the right to terminate this Agreement upon 30 days' prior written notice to
     the defaulting Party.

8.3  For the purpose of this Clause 8, a "Relevant Event" is committed or
     suffered by a Party if:

     8.3.1  it commits a material breach of its obligations under this Agreement
            or the


            JDOA and fails to remedy it within 60 days of being
            specifically required in writing to do so by the other Party;
            provided, that if the breaching Party has proposed a course of
            action to rectify the breach and is acting in good faith to rectify
            same but has not cured the breach by the 60th day, such period shall
            be extended by such period as is reasonably necessary to permit the
            breach to be rectified;

     8.3.2  a distress, execution, sequestration or other process is levied or
            enforced upon or sued out against a material part of its property
            which is not discharged or challenged within 30 days;

     8.3.3  it is unable to pay its debts in the normal course of business;

     8.3.4  it ceases wholly or substantially to carry on its business,
            otherwise than for the purpose of a reconstruction or amalgamation,
            without the prior written consent of the other Party (such consent
            not to be unreasonably withheld);

     8.3.5  the appointment of a liquidator, receiver, administrator, examiner,
            trustee or similar officer of such Party or over all or
            substantially all of its assets under the law of any applicable
            jurisdiction, including without limitation, the United States of
            America, Bermuda or Ireland;

     8.3.6  an application or petition for bankruptcy, corporate re-
            organization, composition, administration, examination, arrangement
            or any other procedure similar to any of the foregoing under the law
            of any applicable jurisdiction, including without limitation, the
            United States of America, Bermuda or Ireland, is filed, and is not
            discharged within 60 days, or a Party applies for or consents to the
            appointment of a receiver, administrator, examiner or similar
            officer of it or of all or a material part of its assets, rights or
            revenues or the assets and/or the business of a Party are for any
            reason seized, confiscated or condemned.

8.4  Upon expiration or termination of the Agreement:

     8.4.1.  any sums that were due from Newco to RPI on Net Sales in the
             Territory or in such particular country or countries in the
             Territory (as the case may be) prior to the expiration or
             termination of this Agreement as set forth herein shall be paid in
             full within 60 days after the expiration or termination of this
             Agreement for the Territory or for such particular country or
             countries in the Territory (as the case may be);

     8.4.2  any provisions that expressly survive termination or expiration of
            this Agreement, including without limitation this Clause 8, shall
            remain in full force and effect;


     8.4.3  all representations, warranties and indemnities shall insofar as are
            appropriate remain in full force and effect;

     8.4.4  the rights of inspection and audit set out in Clause 6 shall
            continue in force for a period of one year;

     8.4.5  all rights and licenses granted pursuant to this Agreement and to
            the RPI Intellectual Property pursuant to the JDOA (including the
            rights of Newco pursuant to Clause 11 of the JDOA with respect to
            patent prosecution and maintenance; and the rights of Newco to the
            RPI Intellectual Property pursuant to Clause 7.2 of the JDOA with
            respect to the development and commercialization of [ * ] using the
            System) shall cease for the Territory or for such particular country
            or countries in the Territory (as the case may be) and shall revert
            to or be transferred to RPI, and Newco shall not thereafter use in
            the Territory or in such particular country or countries in the
            Territory (as the case may be) any rights covered by this Agreement;

     8.4.6  subject to Clause 8.4.7 and to such license, if any, granted by
            Newco to RPI pursuant to the provisions of Clause 12 of the JDOA
            (entitled "Cross Licensing/Exploitation of Products Outside the
            Field"), all rights to Newco Intellectual Property shall be
            transferred to and jointly owned by RPI and Elan and may be
            exploited by both Elan and RPI separately, provided that Elan and
            RPI will cooperate reasonably in the prosecution and maintenance of
            patents claiming such technology and rights and provided further
            that nothing hereunder shall grant, or be construed to grant, the
            right (a) to Elan to make, have made, import, use, offer for sale or
            sell the Target Ribozyme, and (b) to RPI to make, have made, import,
            use, offer for sale or sell the System;

            In the event of a dispute arising pursuant to this Clause 8.4.6,
            Elan and RPI agree to negotiate in good faith on the course of
            action to be taken with respect to determining their respective
            entitlements pursuant to this Clause; and

     8.4.7  the rights of permitted third party sub-licensees in and to the RPI
            Intellectual Property shall survive the termination of the license
            and sublicense agreements granting said intellectual property rights
            to Newco; and Newco, Elan and RPI shall in good faith agree upon the
            form most advantageous to Elan and RPI in which the rights of Newco
            under any such licenses and sublicenses are to be held (which form
            may include continuation of Newco solely as the holder of such
            licenses or assignment of such rights to a third party or parties,
            including an assignment to both Elan and RPI).

            Any sublicense agreement between Newco and such permitted
            sublicensee shall permit an assignment of rights by Newco and shall
            contain appropriate confidentiality provisions.


9.   CONFIDENTIAL INFORMATION

9.1  The Parties agree that it will be necessary, from time to time, to disclose
     to each other confidential and proprietary information, including without
     limitation, inventions, works of authorship, trade secrets, specifications,
     designs, data, know-how and other proprietary information relating to the
     Field, the Products, processes, services and business of the disclosing
     Party.

     The foregoing shall be referred to collectively as "Confidential
     Information".

9.2  Any Confidential Information disclosed by one Party to another Party shall
     be used by the receiving Party exclusively for the purposes of fulfilling
     the receiving Party's obligations under this Agreement and the JDOA and for
     no other purpose.

9.3  Each Party shall disclose Confidential Information of the other Party only
     to those employees, representatives and agents requiring knowledge thereof
     in connection with fulfilling the Party's obligations under this Agreement.
     Each Party further agrees to inform all such employees, representatives and
     agents of the terms and provisions of this Agreement and their duties
     hereunder and to obtain their agreement hereto as a condition of receiving
     Confidential Information.  Each Party shall exercise the same standard of
     care as it would itself exercise in relation to its own confidential
     information (but in no event less than a reasonable standard of care) to
     protect and preserve the proprietary and confidential nature of the
     Confidential Information disclosed to it by the other Party.  Each Party
     shall, upon request of the other Party, return all documents and any copies
     thereof containing Confidential Information belonging to, or disclosed by,
     such other Party.

9.4  Any breach of this Clause 9 by any person informed by one of the Parties is
     considered a breach by the Party itself.

9.5  Confidential Information shall not be deemed to include:

     9.5.1  information that is in the public domain;

     9.5.2  information which is made public through no breach of this
            Agreement;

     9.5.3  information which is independently developed by a Party as evidenced
            by such Party's records;

     9.5.4  information that becomes available to a Party on a non-confidential
            basis, whether directly or indirectly, from a source other than a
            Party, which source did not acquire this information on a
            confidential basis; or

     9.5.5  information which the receiving Party is required to disclose
            pursuant to:


               (i)    a valid order of a court or other governmental body; or

               (ii)   any other requirement of law;

               provided that if the receiving Party becomes legally required to
               disclose any Confidential Information, the receiving Party shall
               give the disclosing Party prompt notice of such fact so that the
               disclosing Party may obtain a protective order or other
               appropriate remedy concerning any such disclosure. The receiving
               Party shall fully co-operate with the disclosing Party in
               connection with the disclosing Party's efforts to obtain any such
               order or other remedy. If any such order or other remedy does not
               fully preclude disclosure, the receiving Party shall make such
               disclosure only to the extent that such disclosure is legally
               required.

9.6  The provisions relating to confidentiality in this Clause 9 shall remain in
     effect during the term of this Agreement, and for a period of 7 years
     following the expiration or earlier termination of this Agreement.

9.7  The Parties agree that the obligations of this Clause 9 are necessary and
     reasonable in order to protect the Parties' respective businesses, and each
     Party agrees that monetary damages would be inadequate to compensate a
     Party for any breach by the other Party of its covenants and agreements set
     forth herein.

     Accordingly, the Parties agree that any such violation or threatened
     violation shall cause irreparable injury to a Party and that, in addition
     to any other remedies that may be available, in law and equity or
     otherwise, each Party shall be entitled to obtain injunctive relief against
     the threatened breach of the provisions of this Clause 9, or a continuation
     of any such breach by the other Party, specific performance and other
     equitable relief to redress such breach together with its damages and
     reasonable counsel fees and expenses to enforce its rights hereunder,
     without the necessity of proving actual or express damages.

10.  GOVERNING LAW AND JURISDICTION; ARBITRATION

10.1.  This Agreement shall be governed by and construed in accordance with the
       laws of the State of New York, without giving effect to the provisions
       thereof relating to the conflict of laws.

10.2   The Parties will attempt in good faith to resolve any dispute arising out
       of or relating to this Agreement promptly by negotiation between
       executives of the Parties. In the event that such negotiations do not
       result in a mutually acceptable resolution, the Parties agree to consider
       other dispute resolution mechanisms including mediation.


       In the event that the Parties fail to agree on a mutually acceptable
       dispute resolution mechanism, any such dispute shall be finally settled
       by arbitration pursuant to Clause 10.3.

10.3   Any dispute under this Agreement which is not settled by mutual consent
       under Clause 10.2 and which relates to (i) the interpretation or
       enforcement of any provision of this Agreement, (ii) the interpretation
       or application of law, or (iii) the ownership of any intellectual
       property shall be finally settled by binding arbitration, conducted in
       accordance with the Commercial Arbitration Rules of the American
       Arbitration Association ("AAA") by one arbitrator appointed in accordance
       with said rules. Such arbitrator shall be an independent expert in
       pharmaceutical product development and marketing (including clinical
       development and regulatory affairs) and shall be reasonably satisfactory
       to each of the Parties; provided, that if the Parties are unable to agree
       upon the identity of such arbitrator within 15 days of demand by either
       Party, then either Party shall have the right to petition the AAA to
       appoint an arbitrator.

       The arbitration shall be held in New York, New York.

       The arbitrator shall determine what discovery will be permitted,
       consistent with the goal of limiting the cost and time which the Parties
       must expend for discovery; provided the arbitrator shall permit such
       discovery as they deem necessary to permit an equitable resolution of the
       dispute.

       Any written evidence originally in a language other than English shall be
       submitted in English translation accompanied by the original or a true
       copy thereof.

       The costs of the arbitration, including administrative and arbitrators'
       fees, shall be shared equally by the Parties and each Party shall bear
       its own costs and attorneys' and witness' fees incurred in connection
       with the arbitration.

       In rendering judgment, the arbitrators may not provide for punitive or
       similar exemplary damages.

       A disputed performance or suspended performances pending the resolution
       of the arbitration must be completed within 30 days following the final
       decision of the arbitrators or such other reasonable period as the
       arbitrators determine in a written opinion.

       Any arbitration under this Agreement shall be completed within one year
       from the filing of notice of a request for such arbitration.

       The arbitration proceedings and the decision shall not be made public
       without the joint consent of the Parties and each Party shall maintain
       the confidentiality of such proceedings and decision unless otherwise
       permitted by the other Party.


     The Parties agree that the decision shall be the sole, exclusive and
     binding remedy between them regarding any and all disputes, controversies,
     claims and counterclaims presented to the arbitrators.  Application may be
     made to any court having jurisdiction over the Party (or its assets)
     against whom the decision is rendered for a judicial recognition of the
     decision and an order of enforcement.

11.  IMPOSSIBILITY OF PERFORMANCE - FORCE MAJEURE

     Neither RPI nor Newco shall be liable for delay in the performance of any
     of its obligations hereunder if such delay results from causes beyond its
     reasonable control, including, without limitation, acts of God, fires,
     strikes, acts of war, intervention of a government authority, but any such
     delay or failure shall be remedied by such Party as soon as practicable.

12.  ASSIGNMENT

     This Agreement may not be assigned by either Party without the prior
     written consent of the other, save that either Party may assign this
     Agreement to its Affiliates or subsidiaries without such prior written
     consent; provided that such assignment does not have any adverse tax
     consequences on the other Party.

13.  NOTICES

13.1 Any notice to be given under this Agreement shall be sent in writing in
     English by registered airmail or telefaxed to the following addresses:

     If to Newco at:

     Medizyme Pharmaceuticals Ltd.
     102 St. James Court
     Clarendon House
     Church St.
     Hamilton, Bermuda
     Attention:  Secretary
     Telephone:  441-295-1422
     Fax:        441-292-4720

     with a copy to Elan, plc and EPIL at:

     Elan Corporation, plc
     Elan Pharma International Limited


     C/o Elan International Services, Ltd.
     102 St. James Court
     Flatts,
     Smiths FL04
     Bermuda
     Attention:  Secretary
     Telephone:  441 292 9169
     Fax:        441 292 2224

     If to RPI at:

     Ribozyme Pharmaceuticals Incorporated
     2950 Wilderness Place
     Boulder, Colorado 80301
     Attention:  Chief Executive Officer
     Telephone   303-449-6500
     Fax:        303-449-6995

     with a copy to:

     Rothgerber Johnson & Lyons LLP
     One Tabor Center, Suite 3000
     1200 Seventeenth Street
     Denver, Colorado 80202
     Attention:  Woody Davis, Esq.
     Telephone   303-623-9000
     Fax:        303-623-9222

     If to Elan, plc and/or EPIL at:

     Elan Corporation, plc
     Elan Pharma International Limited
     C/o Elan International Services, Ltd.
     102 St. James Court
     Flatts,
     Smiths FL04
     Bermuda
     Attention:  Secretary
     Telephone:  441 292 9169
     Fax:        441 292 2224

     or to such other address(es) and telefax numbers as may from time to time
     be notified by either Party to the other hereunder.


13.2 Any notice sent by mail shall be deemed to have been delivered within seven
     7 working days after dispatch and any notice sent by telex or telefax shall
     be deemed to have been delivered within twenty 24 hours of the time of the
     dispatch.  Notice of change of address shall be effective upon receipt.

14.  MISCELLANEOUS

14.1 Waiver:
     -------

     No waiver of any right under this Agreement shall be deemed effective
     unless contained in a written document signed by the Party charged with
     such waiver, and no waiver of any breach or failure to perform shall be
     deemed to be a waiver of any other breach or failure to perform or of any
     other right arising under this Agreement.

14.2 Severability:
     -------------

     If any provision in this Agreement is agreed by the Parties to be, or is
     deemed to be, or becomes invalid, illegal, void or unenforceable under any
     law that is applicable hereto:

     14.2.1  such provision will be deemed amended to conform to applicable laws
             so as to be valid and enforceable; or

     14.2.2  if it cannot be so amended without materially altering the
             intention of the Parties, it will be deleted, with effect from the
             date of such agreement or such earlier date as the Parties may
             agree, and the validity, legality and enforceability of the
             remaining provisions of this Agreement shall not be impaired or
             affected in any way.

14.3 Further Assurances:
     -------------------

     At the request of any of the Parties, the other Party or Parties shall (and
     shall use reasonable efforts to procure that any other necessary parties
     shall) execute and perform all such documents, acts and things as may
     reasonably be required subsequent to the signing of this Agreement for
     assuring to or vesting in the requesting Party the full benefit of the
     terms hereof.

14.4 Successors:
     -----------

     This Agreement shall be binding upon and inure to the benefit of the
     Parties hereto, their successors and permitted assigns.

14.5 No Effect on Other Agreements/Conflict:
     ---------------------------------------


     No provision of this Agreement shall be construed so as to negate, modify
     or affect in any way the provisions of any other agreement between the
     Parties unless specifically referred to, and solely to the extent provided
     herein.

     In the event of a conflict between the provisions of this Agreement and the
     provisions of the JDOA, the terms of the JDOA shall prevail unless this
     Agreement specifically provides otherwise.

14.6  Amendments:
      -----------

     No amendment, modification or addition hereto shall be effective or binding
     on any Party unless set forth in writing and executed by a duly authorized
     representative of each Party.

14.7  Counterparts:
      -------------

     This Agreement may be executed in any number of counterparts, each of which
     when so executed shall be deemed to be an original and all of which when
     taken together shall constitute this Agreement.

14.8  Good Faith:
      -----------

     Each Party undertakes to do all things reasonably within its power which
     are necessary or desirable to give effect to the spirit and intent of this
     Agreement.

14.9  No Reliance:
      ------------

     Each Party hereby acknowledges that in entering into this Agreement it has
     not relied on any representation or warranty save as expressly set out
     herein or in any document referred to herein.

14.10 Relationship of the Parties:
      ----------------------------

     Nothing contained in this Agreement is intended or is to be construed to
     constitute Elan and Newco as partners, or Elan as an employee of Newco, or
     Newco as an employee of Elan.

     Neither Party hereto shall have any express or implied right or authority
     to assume or create any obligations on behalf of or in the name of the
     other Party or to bind the other Party to any contract, agreement or
     undertaking with any third party.


IN WITNESS WHEREOF the Parties hereto have executed this Agreement.

SIGNED

BY_______________________
For and on behalf of
Ribozyme Pharmaceuticals, Inc.

SIGNED

BY: _____________________
For and on behalf of
Medizyme Pharmaceuticals Ltd.

CONSENTED AND AGREED TO:

SIGNED

BY: ____________________
for and on behalf of
Elan Corporation, plc acting
through its division Elan
Pharmaceutical Technologies

SIGNED

BY: ____________________
for and on behalf of
Elan Pharma International Limited


                                   SCHEDULE 1
                                   ----------

                                  RPI PATENTS

CECH PATENTS - US




                   Title/Invention                     Patent No.                 Assignee
- -----------------------------------------------------------------------------------------------------
                                                                 
1         RNA Ribozyme Polymerases,                   US 4,987,071        University Patents, Inc.
          Dephosphorylases, Restriction
          Endoribonucleases and Methods
 -----------------------------------------------------------------------------------------------------
2        RNA Ribozyme Polymerases, and Methods        US 5,037,746        University Patents, Inc.
- ------------------------------------------------------------------------------------------------------
3        RNA Ribozyme Polymerases,                    US 5,093,246        University Patents, Inc.
         Dephosphorylases, Restriction
         Endoribonucleases and Methods
- ------------------------------------------------------------------------------------------------------
4        RNA Ribozyme Restriction                     US 5,116,742        University Patents, Inc.
         Endoribonucleases and Methods
- ------------------------------------------------------------------------------------------------------
5        RNA Ribozyme Which Cleaves Substrate RNA     US 5,354,855        University Patents, Inc.
         Without Formation of a Covalent Bond
- ------------------------------------------------------------------------------------------------------
6        RNA Ribozyme Polymerases,                    US 5,591,610        University Patents, Inc.
         Dephosphorylases, Restriction
         Endoribonucleases and Methods
- ------------------------------------------------------------------------------------------------------


CECH PATENTS - FOREIGN


- ------------------------------------------------------------------------------------------------------
                                                               
1        RNA Ribozyme Polymerases,            European Patent No.       University Patents, Inc.
         Dephosphorylases, Restriction        N0. 291533 B1
         Endoribonucleases and Methods
- ------------------------------------------------------------------------------------------------------
2        RNA Ribozyme Polymerases,            Japanese Patent No.       University Patents, Inc.
         Dephosphorylases, Restriction           No. 2530906
         Endoribonucleases and Methods
- ------------------------------------------------------------------------------------------------------



OTHER PATENTS/1/


                                                                            
- -----------------------------------------------------------------------------------------------------
   1  ErbB-2/neu Targeted Ribozymes               U.S. 5,599,704                     RPI
- -----------------------------------------------------------------------------------------------------
   2  Method and Reagent for Inhibiting           Australian Pat.
      Cancer Development                          No. 687001                         RPI
- -----------------------------------------------------------------------------------------------------
   3        [ * ]                                      [ * ]                         RPI
- -----------------------------------------------------------------------------------------------------
   4        [ * ]                                 US Patent Pending                  RPI
- -----------------------------------------------------------------------------------------------------
   5        [ * ]                                 US Patent Pending                  RPI
- -----------------------------------------------------------------------------------------------------


________________
/1/  In addition to the patents listed in this table, RPI has rights to several
patents covering various aspects of ribozyme technology such as chemical
stabilization of ribozymes, new ribozyme motifs, and manufacture of ribozymes,
all of which provide additional coverage for the HERZYME Ribozyme Product. RPI
has rights to 102 issued/allowed patents and over 100 applications pending
worldwide covering various aspects of Ribozyme Technology


                                 SCHEDULE 2/1/

                       TECHNOLOGICAL COMPETITORS OF ELAN


[ * ]

1.  Including any and all divisions or subsidiaries of such entities and
successor entities.