<PAGE>

                       YEAST TECHNOLOGY LICENSE AGREEMENT

         YEAST TECHNOLOGY LICENSE AGREEMENT (the "Agreement"), dated as of
February 15, 2000, by and between Cadus Pharmaceutical Corporation, a Delaware
corporation with offices at 767 Fifth Avenue, New York, New York 10153 ("CADUS")
and OSI Pharmaceuticals, Inc., a Delaware corporation with offices at 106
Charles Lindbergh Boulevard, Uniondale, New York 11533 ("OSI").

                              W I T N E S S E T H:
                               - - - - - - - - - -

         WHEREAS, CADUS is the owner of, or has acquired the rights to, CADUS
Technology; and

         WHEREAS, OSI desires to obtain a non-exclusive license for the use and
practice of CADUS Technology, and CADUS is willing to grant such non-exclusive
license, upon the terms and conditions hereinafter set forth;

         NOW, THEREFORE, in consideration of the foregoing recitals and the
mutual covenants and agreements of the Parties contained in this Agreement, the
Parties agree as follows:

1.       DEFINITIONS

         For the purposes of this Agreement, the following terms shall have the
meanings set forth in this Section 1:




<PAGE>



              "CADUS Patents" shall mean all patents and patent applications to
the extent they claim CADUS Technology, which are or become owned by CADUS or to
which CADUS otherwise has, now or in the future, the right to grant licenses.
Included within the definition of CADUS Patents are all continuations,
continuations- in-part, divisions, patents of addition, reissues, renewals,
extensions, registrations, confirmations, re-examinations thereof and any
provisional applications.

              "CADUS Technology" shall mean all proprietary inventions,
improvements, discoveries, claims, formulae, processes, trade secrets and
technologies owned by CADUS or to which CADUS has the right to grant licenses or
sublicenses as of the Effective Date, relating to technology involving the
transfection, expression and functional coupling of Targets into yeast cells and
mammalian cell lines and the development of such yeast cells and mammalian cell
lines as screening assays for the discovery of human diagnostics and
therapeutics. "CADUS Technology" shall include, without limitation, the
bioinformatics databases owned by CADUS required to fully utilize and develop
the CADUS Technology.

              "Covered Material" means a Hybrid Yeast Cell, a Plasmid, a
Mammalian Cell Line or any material that is a Derivative of it. "Covered
Material" includes a Derivative of a Derivative of a Hybrid Yeast Cell, a
Plasmid or a Mammalian Cell Line.

              "Derivative" shall mean any of the following: (i) any substance
derived from or expressed or modified by a Hybrid Yeast Cell, a Plasmid or a
Mammalian Cell Line; (ii) any substance that contains or incorporates a Hybrid
Yeast Cell, a Plasmid or a Mammalian Cell Line; or (iii) any fragment of any of
the foregoing.


                                        2


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              "Effective Date" shall mean the date of this Agreement as set
forth at the beginning of this Agreement.

              "Hybrid Yeast Cells" shall mean genetically modified yeast cells,
which are owned by CADUS.

              "Injunction" shall mean the injunction, dated February 23, 1999,
issued by the United States District Court for the Southern District of
California in the SIBIA Litigation.

              "Mammalian Cell Lines" shall mean mammalian cell lines which are
owned by CADUS.

              "Party" shall mean CADUS or OSI and, when used in the plural,
shall mean CADUS and OSI.

              "Person" shall mean any natural person, corporation, firm,
business trust, joint venture, association, university, organization, company,
partnership or other business entity, or any government or any agency or
political subdivision thereof.

              "Plasmid" shall mean plasmids which are owned by CADUS.

              "Product" shall mean any compound, formulation or composition
whose utility is identified using CADUS Technology.

              "proprietary" shall mean, with respect to intellectual property,
intellectual property that is (in whole or in part) not in the public domain at
the time of transfer to the other party.


                                        3


<PAGE>



              "SIBIA Litigation" shall mean SIBIA Neurosciences, Inc. v. Cadus
Pharmaceutical Corporation, Civil Action Number 961231 1EG POR.

              "Target" shall mean any biological molecular entity that provides
a specific interaction with compounds, extracts, broths or other screening
samples.

              "Third Party" shall mean any Person who or which is neither a
Party nor an affiliate of a Party.

2.       REPRESENTATIONS AND WARRANTIES.

         2.1 Representations and Warranties of Both Parties Each Party
represents and warrants to the other Party that: (i) it is free to enter into
this Agreement; (ii) in so doing, it will not violate any other agreement to
which it is a party; (iii) it has taken all corporate action necessary to
authorize the execution and delivery of this Agreement and the performance of
its obligations under this Agreement; and (iv) this Agreement constitutes a
valid and binding obligation of such Party and is enforceable against it in
accordance with its terms.

         2.2 Representations and Warranties of CADUS. CADUS hereby represents
and warrants to OSI that:

              (a) It is the owner, or a licensee, of the CADUS Technology and
CADUS Patents and has the right to grant licenses therefor; and

              (b) During the term of this Agreement, it shall maintain its
licenses to Cadus Technology licensed to it.



                                        4


<PAGE>



3.       GRANT OF LICENSE

         3.1 License Grant. Subject to the terms and conditions of this
Agreement, CADUS hereby grants to OSI , a non-exclusive, royalty-free, worldwide
right and license to use and practice the CADUS Technology and CADUS Patents
other than to identify and select compounds in a method that infringes any of
the claims of United States Patent No. 5,401,629 so long as any such claim
remains outstanding and in effect.

         3.2 No Violation of Injunction. OSI acknowledges that it has reviewed
the Injunction and covenants that, in practicing the CADUS Technology and CADUS
Patents, OSI will not violate the terms of the Injunction or cause CADUS to be
in violation of the terms of the Injunction so long as the Injunction remains
outstanding and in effect.

         3.3 No Right to Sublicense. OSI shall not have the right to sublicense
its rights hereunder. During the term of this Agreement, OSI may practice the
CADUS Technology and CADUS Patents in connection with assay development and
screening for Third Parties pursuant to collaborative research programs with
such Third Parties ("Third Party Collaborators"), provided that such assay
development and screening takes place at OSI's facilities and is conducted by
OSI personnel. In addition, a Third Party Collaborator may utilize assays
developed by OSI using CADUS Technology to test compounds solely during the term
and in furtherance of its collaboration with OSI.

         3.4 Reservation of Rights. CADUS is retaining all rights to the CADUS
Technology and CADUS Patents that are not specifically being licensed to OSI
pursuant to Section 3.1 hereof.


                                        5


<PAGE>



         3.5 Ownership of CADUS Technology. The Parties acknowledge and agree
that all CADUS Technology is now and shall be solely owned or licensed by CADUS
and that OSI shall have no right, title or interest therein except as explicitly
set forth in this Agreement.

         3.6 Provision of Access to CADUS Technology. Subject to the
confidentiality provisions of Section 10.1, CADUS shall provide to OSI: (i) an
electronic copy of its database of Covered Material, (ii) an electronic copy of
its database of G protein-coupled receptors that are not proprietary to any
Third Party and (iii) an electronic copy of the bioinformatics databases owned
by CADUS required to fully utilize and develop the CADUS Technology.

4.       ACCESS TO COVERED MATERIAL.

         4.1 Access to Covered Material. On or prior to the date hereof, CADUS
has delivered to OSI an aliquot of each Covered Material listed on Exhibit A
annexed hereto. During the term of this Agreement, CADUS shall provide to OSI an
aliquot of each Covered Material not listed on Exhibit A annexed hereto that is
requested by OSI in accordance with the procedure set forth below. OSI may
request a Covered Material by sending to Dr. James Broach at Department of
Molecular Biology, Lewis Thomas Laboratory, Princeton University, Washington
Road, Princeton, New Jersey 08544 (or to such other person at such other place
as CADUS may hereafter designate) a written request for such Covered Material.
OSI shall pay to Dr. James Broach or such other person the incremental cost of
retrieval and shipment of such Covered Material promptly after the receipt of an
invoice therefor. CADUS shall ship such Covered Material to OSI within 15 days
of its receipt of such written request. OSI shall have the right to use Covered
Material only during the term of this Agreement.


                                        6


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         4.2 No Transfer of Covered Material. OSI shall not provide any Covered
Material to any Third Party other than a contract research organization or Third
Party Collaborator that has executed a confidentiality agreement with respect to
the Covered Material containing provisions similar to Section 10 hereof. OSI
shall promptly destroy all Covered Material in its possession upon the
termination of this Agreement. OSI will not take or send Covered Material to any
location other than the facilities of OSI or a contract research organization or
Third Party Collaborator that has executed a confidentiality agreement with
respect to the Covered Material containing provisions similar to Section 10
hereof without CADUS's prior written consent.

         4.3 No Warranties As To Covered Material. Any Covered Material
delivered pursuant to this Agreement is understood to be experimental in nature
and may have hazardous properties. It is supplied AS IS. CADUS MAKES NO
REPRESENTATIONS AND EXTENDS NO WARRANTIES OF ANY KIND, EITHER EXPRESS OR
IMPLIED. THERE ARE NO EXPRESS OR IMPLIED WARRANTIES OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE, OR THAT THE USE OF THE COVERED MATERIAL WILL
NOT INFRINGE ANY PATENT, COPYRIGHT, TRADEMARK, OR OTHER PROPRIETARY RIGHTS.

         4.4 Compliance with Laws. OSI agrees to use the Covered Material in
compliance with all applicable statutes and regulations including, for example,
those relating to research involving the use of animals or recombinant DNA.

5.       LICENSE AND MAINTENANCE FEES.

         5.1 License and Access Fees. In consideration of the license granted to
OSI by CADUS pursuant to Section 3.1 hereof, OSI shall pay to CADUS a license
fee of $100,000 payable on the Effective Date. In consideration of the access to
CADUS


                                        7


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Technology (Section 3.6) and to Covered Material (Section 4.1), OSI shall pay to
CADUS an access fee of $600,000 payable on the Effective Date.

         5.2 Maintenance Fee. OSI shall also pay to CADUS an annual maintenance
fee of $100,000 payable on each of the first ten anniversaries of the Effective
Date during the term of this Agreement.

         5.3 Special Fee. If the Injunction is lifted or dissolved, OSI shall
pay to CADUS a supplemental license fee of $250,000 within ten (10) days after
the receipt of notice of the lifting or dissolution of the Injunction.

         5.4 No Refunds. None of the fees paid by OSI to CADUS pursuant to
Section 5 shall be refundable for any reason whatsoever.

6.       PATENTS.

         6.1 No Obligation to Prosecute or Maintain Patents. CADUS shall not
have any obligation to prosecute or maintain CADUS Patents. Notwithstanding the
foregoing, CADUS shall not abandon any of the United States patent applications
constituting CADUS Patents set forth on Exhibit B until such time as (i) the
corresponding foreign patent application has been published or (ii) CADUS has
taken the appropriate steps with the United States Patent and Trademark Office
to dedicate such patent application to the public.

         6.2 Infringement. OSI shall give CADUS prompt written notice of any
claim or allegation received by it that the use of CADUS Technology constitutes
an infringement of a Third Party patent or patents. OSI shall have the primary
right to control the defense of any such claim against OSI with counsel of its
own choosing.


                                        8


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CADUS agrees to cooperate with OSI, at OSI's expense, in any reasonable manner
deemed by OSI to be necessary in defending such action. Notwithstanding the
foregoing, CADUS shall, in its own discretion and at its own cost, be entitled
to participate through counsel of its own choosing in any such action.

         6.3 Patent Enforcement.
                      (a)     With respect to any alleged infringement involving
a claim(s) of any patents covering CADUS Technology, CADUS shall have the first
right, but not the duty, to institute patent infringement actions against third
parties. If CADUS does not institute an infringement proceeding against an
offending third party, OSI shall have the right, but not the duty, to institute
such an action.

                      (b)     The costs and expenses of any action instituted
pursuant to this Section 6.3 (including fees of attorneys and other
professionals) shall be borne by the Party instituting the action, or, if the
Parties elect to cooperate in instituting and maintaining such action, such
costs and expenses shall be borne by the Parties in such proportions as they may
agree in writing. Each Party shall execute all necessary and proper documents
and take such actions as shall be appropriate to allow the other Party to
institute and prosecute such infringement actions (if such other Party has the
right to institute and prosecute such infringement actions pursuant to this
Section 6.3). Any award paid by Third Parties as a result of such an
infringement action (whether by way of settlement or otherwise) shall be paid to
the Party who instituted and maintained such action, or, if both Parties
instituted and maintained such action, such award shall be allocated among the
Parties in proportion to their respective contributions to the costs and
expenses incurred in such action, or as they may have otherwise agreed.
Notwithstanding the above, CADUS shall receive 25% of any such award by way of
settlement or otherwise after deducting legal and other reasonable expenses.


                                        9


<PAGE>




7.       TERM AND TERMINATION

         7.1 Term. This Agreement shall become effective as of the Effective
Date and shall remain in full force and effect until terminated as provided in
this Section 7.

         7.2 Termination by OSI. OSI may terminate this Agreement at any time by
giving CADUS thirty (30) days prior written notice of termination.

         7.3 Termination for Breach. Failure by either Party to comply with any
of the obligations contained in this Agreement shall entitle the other Party to
give to the defaulting Party notice specifying the nature of the default and
requiring it to cure such default. If such default is not cured within 30 days
after the receipt of such notice, the notifying Party shall be entitled, without
prejudice to any of its other rights conferred on it by this Agreement, in
addition to any other remedies available to it by law or in equity, to terminate
this Agreement by giving written notice to take effect immediately upon delivery
of such notice. The right of either Party to terminate this Agreement shall not
be affected in any way by its waiver or failure to take action with respect to
any previous default.

         7.4 Termination for Bankruptcy. CADUS may terminate this Agreement if,
at any time, OSI shall file in any court or agency pursuant to any statute or
regulation of any state or country, a petition in bankruptcy or insolvency or
for reorganization or for an arrangement or for the appointment of a receiver or
trustee of OSI or of its assets, or if OSI proposes a written agreement of
composition or extension of its debts, or if OSI shall be served with an
involuntary petition against it, filed in any insolvency proceeding, and such
petition shall not be dismissed within sixty (60) days


                                       10


<PAGE>



after the filing thereof, or if OSI shall propose or be a party to any
dissolution or liquidation, or if OSI shall make an assignment for the benefit
of creditors.

         7.5 No Termination in Event of CADUS Bankruptcy. CADUS and OSI
acknowledge that this Agreement and the license granted herein comes within
Section 365(n) of Title 11, United States Code (the "Bankruptcy Code"). CADUS
acknowledges that if CADUS, as a debtor in possession, or a trustee in
bankruptcy in a case under the Bankruptcy Code, rejects the Purchase Agreement
or this Agreement, OSI may elect to retain its rights under this Agreement as
provided in Section 365(n) of the Bankruptcy Code. Upon written request of OSI
to CADUS or the bankruptcy trustee, CADUS shall not interfere with the rights of
OSI as provided in this Agreement.

         7.6 Survival of Certain Provisions. The following provisions of this
Agreement will survive the termination of this Agreement: Sections 2.1, 3.5,
4.2, 4.3, 4.4, 8, 9, 10 and 11.

8.       DISPUTE RESOLUTION

         8.1 Dispute Resolution. If one of the Parties hereto declares that a
dispute between the Parties has arisen related to this Agreement, such dispute
shall, in the first instance, be the subject of good faith negotiations between
the Parties to resolve such dispute. Should the negotiations not lead to a
settlement of the dispute within thirty (30) days of the date of the meeting,
the Parties shall refer the dispute to a mutually acceptable mediation service
to resolve the dispute. The mediation shall be attended by individuals from
within each Party who have decision-making authority with respect to the matter
in question. If the mediation does not lead to a settlement of the dispute
within thirty (30) days of the date of the meeting, then the Parties shall
submit the issue to arbitration before a panel of arbitrators under the
commercial rules of the


                                       11


<PAGE>



American Arbitration Association. Unless the Parties otherwise agree, the
arbitration will be held in New York, New York. The panel of arbitrators shall
consist of three parties: one selected by each Party, as well as a disinterested
third party that the two arbitrators shall name. The third arbitrator shall be a
person who has had experience in the business of biotechnology licensing. If a
qualified person in this field cannot be found and agreed upon, the two
arbitrators shall use their own discretion and select a third arbitrator with
qualifications as they deem appropriate. The three arbitrators shall be given
full power to hear and finally determine and dispose of all disputes between the
parties that may arise from or that are related to this Agreement. The
arbitrator will make their ruling in writing no later than thirty (30) days
after the hearing. The decision of two of the three arbitrators will be binding
on the Parties. No Party has a right to appeal the ruling, to any court or
otherwise. Judgment upon the decision rendered may be entered in any court
having jurisdiction or application may be made to such court of a judicial
acceptance of the award and an order of enforcement, as the case may be. Each
Party shall pay its own attorney's fees. All fees and expenses payable with
respect to the mediation and arbitration proceedings shall be shared by both
Parties during the course of the mediation and arbitration proceedings, but, in
the case of arbitration, shall be reimbursed in favor of the prevailing Party
after the arbitration ruling is rendered. Notwithstanding this Section 8.1,
CADUS shall have the right to seek injunctive relief pursuant to Section 11.12
hereof.

9.       INDEMNITY, INSURANCE AND REPRESENTATIONS

         9.1 Indemnity. OSI agrees to indemnify, hold harmless and defend CADUS,
its directors, officers, employees and agents against any and all claims, suits,
losses, damages, costs, fees and expenses, including attorney fees, resulting
from or arising out of the exercise of this license, including from OSI's use,
storage or disposal


                                       12


<PAGE>



of the Covered Material or manufacture, distribution or sale or Product(s),
unless such losses, damages, costs, fees and expenses arise from the use of
CADUS Technology constituting an infringement of a Third Party patent or
patents. CADUS shall not be responsible for the negligence or intentional
wrongdoing of OSI.

         9.2 Insurance. At the time of its sale of Product(s), OSI shall
maintain in force at its sole cost and expense, with reputable insurance
companies, general liability insurance and products liability insurance coverage
that names CADUS as a beneficiary and protects against liability under Section
9.1 above in such amount as is customary in the industry. CADUS shall have the
right to ascertain from time to time that such coverage exists, such right to be
exercised in a reasonable manner.

         9.3 Warranties and Representations. Nothing in this Agreement shall be
deemed to be a representation or warranty by CADUS of the validity of any of the
CADUS Patents or the accuracy, safety, efficacy or usefulness for any purpose of
any technology licensed hereunder. CADUS shall have no obligation, express or
implied, to supervise, monitor, review or otherwise assume responsibility for
the production, manufacture, testing, marketing or sale of any Product(s), and
CADUS shall have no liability whatsoever to OSI or any Third Parties for or on
account of any injury, loss or damage, of any kind or nature, sustained by, or
any damage assessed or asserted against, or any other liability incurred by or
imposed upon OSI, its affiliates or sublicensees, or any other person or entity
arising out of or in connection with or resulting from: (i) the production, use
or sale of any Product(s); (ii) the use of any CADUS Technology; or (iii) any
advertising or other promotional activities with respect to any of the
foregoing.

10.      CONFIDENTIALITY.



                                       13


<PAGE>



         10.1 CADUS Technology. All CADUS Technology and Covered Material that
is disclosed or provided to OSI shall be maintained by OSI in confidence and
shall not be disclosed to any other person, firm or agency, governmental or
private, or used for purposes other than those set forth in this Agreement,
without the prior written consent of CADUS, except to the extent that such
information:

                    (i) is known at the time of its receipt by OSI as documented
by written records dated prior to such disclosure;

                    (ii) is in the public domain other than through the fault of
OSI;

                    (iii) is subsequently disclosed to OSI by a Third Party who
may lawfully do so and who is not under an obligation of confidentiality to
CADUS; or

                    (iv) is required to be disclosed in a judicial or
administrative proceeding after legal remedies for maintaining the subject
matter in confidence have been exhausted.

         10.2 Duration of Confidentiality Obligation. OSI's obligations of
confidentiality shall continue during the term of this Agreement and for a
period of five years thereafter.

11.      MISCELLANEOUS

         11.1 Relationship of Parties. Nothing in this Agreement is intended or
shall be deemed to constitute a partnership, agency, employer-employee or joint
venture relationship between the Parties. No Party shall incur any debts or make
any commitments for the other.


                                       14


<PAGE>




         11.2 Assignment. Neither Party shall be entitled to assign its rights
or transfer its obligations hereunder without the express written consent of the
other Party hereto, except that CADUS may assign its rights and transfer its
obligations hereunder to a purchaser of CADUS Technology and OSI may assign its
rights and transfer its obligations hereunder to any assignee of all or
substantially all of its assets. No assignment and transfer shall be valid and
effective unless and until the assignee/transferee shall agree in writing to be
bound by the provisions of this Agreement.

         11.3 Further Actions. Each Party agrees to execute, acknowledge and
deliver such further instruments, and to do all such other acts, as may be
necessary or appropriate in order to carry out the purposes and intent of this
Agreement.

         11.4 Notice. Any notice or request required or permitted to be given
under or in connection with this Agreement (other than requests pursuant to
Section 4.1 hereof) shall be deemed to have been sufficiently given if in
writing and personally delivered or sent by registered or certified mail (return
receipt requested), facsimile transmission (receipt verified), express courier
service (signature required), or telegram, prepaid, to the Party for which such
notice is intended, at the address set forth for such Party below:

                      (a)     In the case of OSI, to:

                              OSI Pharmaceuticals, Inc.
                              106 Charles Lindbergh Boulevard
                              Uniondale, New York 11533
                              Attention:  President
                              Facsimile No.: (516) 745-6429



                                       15


<PAGE>



                              with a copy to:

                              Squadron, Ellenoff, Plesent & Sheinfeld, LLP
                              551 Fifth Avenue
                              New York, New York 10176
                              Attention:  Joel I. Papernik, Esq.
                              Facsimile No.: (212) 697-6686

                      (b)     In the case of CADUS, to:

                              Cadus Pharmaceutical Corporation
                              767 Fifth Avenue
                              New York, New York 10153
                              Attention:  President
                              Facsimile No.: (212) 750-5841

                              With a copy to:

                              Morrison Cohen Singer & Weinstein, LLP
                              750 Lexington Avenue
                              New York, New York 10022
                              Attention:  Salomon R. Sassoon, Esq.
                              Facsimile No.: (212) 735-8708

or to such other address for such Party as it shall have specified by like
notice to the other Party, provided that notices of a change of address shall be
effective only upon receipt thereof. If sent by mail, facsimile transmission,
express courier service, or telegram, the date of mailing or transmission shall
be deemed to be the date on which such notice or request has been given.

         11.5 Use of Name. Except as otherwise provided herein, neither Party
shall have any right, express or implied, to use in any manner the name or other
designation of the other Party or any other trade name or trademark of the other
Party for any purpose in connection with the performance of this Agreement.


                                       16


<PAGE>



         11.6 Waiver. A waiver by either Party of any of the terms and
conditions of this Agreement in any instance shall not be deemed or construed to
be a waiver of such term or condition for the future, or of any subsequent
breach hereof. All rights, remedies, undertakings, obligations and agreements
contained in this Agreement shall be cumulative and none of them shall be in
limitation of any other remedy, right, undertaking, obligation or agreement of
either Party.

         11.7 Export Control Laws. OSI agrees to abide by all laws and
regulations of the United States controlling the export of technical data,
computer software, biological materials, laboratory prototypes and other
commodities and technology.

         11.8 Severability. When possible, each provision of this Agreement will
be interpreted in such manner as to be effective and valid under applicable law,
but if any provision of this Agreement is held to be prohibited by or invalid
under applicable law, such provision will be ineffective only to the extent of
such prohibition or invalidity, without invalidating the remainder of this
Agreement, and the Parties shall negotiate in good faith to modify this
Agreement to preserve (to the extent possible) their original intent.

         11.9 Amendment. No amendment, modification or supplement of any
provisions of this Agreement shall be valid or effective unless made in writing
and signed by a duly authorized officer of each Party.

         11.10 Governing Law. This Agreement shall be governed by, and construed
and enforced in accordance with, the laws of the State of New York, without
regard to its choice of law principles.



                                       17


<PAGE>



         11.11 Entire Agreement. This Agreement sets forth the entire agreement
and understanding between the Parties as to the subject matter hereof and
supercedes any previous agreements and understandings between the Parties with
respect to the subject matter hereof including without limitation the Technology
License Agreement between the Parties dated as of July 30, 1999.

         11.12 Injunctive Relief. OSI acknowledges that, in the event of its
breach or threatened breach of any of the provisions of this Agreement, CADUS
would sustain great and irreparable injury and damage. Therefore, in addition to
any other remedies which CADUS may have under this Agreement or otherwise, CADUS
shall be entitled to an injunction issued by any court of competent jurisdiction
restraining such breach or threatened breach. This Section 11.12 shall not,
however, be construed as a waiver of any of the rights which CADUS may have for
damages or otherwise.

         11.13 Counterparts. This Agreement may be executed simultaneously in
any number of counterparts, any one of which need not contain the signature of
more than one Party but all such counterparts taken together shall constitute
one and the same agreement.

         11.14 Descriptive Headings. The descriptive headings of this Agreement
are for convenience only and shall be of no force or effect in construing or
interpreting any of the provisions of this Agreement.



                                       18


<PAGE>



         IN WITNESS WHEREOF, each of the Parties has caused this Agreement to be
executed by its duly authorized officer as of the date first above written.

                                       CADUS PHARMACEUTICAL CORPORATION

                                       By:   /s/ Charles Woler
                                             -----------------------------
                                             Charles Woler, President

                                       OSI  PHARMACEUTICALS, INC.

                                       By:    /s/ Colin Goddard
                                              ----------------------------
                                              Colin Goddard, President
                                              and Chief Executive Officer


                                       19


<PAGE>
                                                                 EXHIBIT A

<TABLE>
<CAPTION>
----------------------------------------------------------------------------------------------------------------------------------
STRAIN_ID  MATINGTYPE    GENOTYPENEW                                            P1NAME           P2NAME          P3NAME
----------------------------------------------------------------------------------------------------------------------------------
<S>        <C>           <C>                                                    <C>              <C>             <C>
     1141  @             FUS1p-HIS3 can1 far1*1442 gpa1(41)-G@i2 his3
                         leu2 lys2 ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1
                         ura3
----------------------------------------------------------------------------------------------------------------------------------
     1316  @             FUS1p-HIS3 can1 far1*1442 gpa1*1163 his3
                         leu2 lys2 ste14::trp1::LYS2 ste3*1156
                         tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
     1455  a             FUS1p-HIS3 bar1::hisG far1-1 his3 leu2
                         ste14::TRP1 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
     1892  a             FUS1p-HIS3 bar1::hisG his3 leu2 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
     4600  @             FUS1p-HIS3 can1 far1*1442 gpa1*1163 his3
                         leu2 lys2 ste14::trp1::LYS2 ste3*1156
                         ste4*2393 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
     6259  a             FUS1p-HIS3 bar1::hisG far1-1 his3  leu2 lys2
                         ste14::trp1::LYS2 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
     6492  a             FUS1p-HIS3 bar1::hisG far1*1442 his3 leu2 tbt1-1
                         trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
     6550  @             FUS1p-HIS3 can1 far1*1442 gpa1*1163 his3 leu2
                         lys2 npr2::nFUS1p-CAN1  ste14::trp1::LYS2
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
     7967  @             FUS1p-HIS3 can1 far1*1442 gpa1(41)-G@i3 his3
                         leu2 lys2 ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1
                         ura3
----------------------------------------------------------------------------------------------------------------------------------
     8342  @             FUS1p-HIS3 can1 far1*1442 gpa1p-rG@sE10K
                         his3 leu2 lys2 ste14::trp1::LYS2 ste3*1156 tbt1-1
                         trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
     8344  @             FUS1p-HIS3 can1 far1*1442 gpa1p-rG@sE10K;
                         D229S his3 leu2 lys2 ste14::trp1::LYS2 ste3*1156
                         tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
</TABLE>

<PAGE>
<TABLE>
<S>        <C>           <C>                                                    <C>              <C>             <C>
----------------------------------------------------------------------------------------------------------------------------------
     8350  @             FUS1p-HIS3 can1 far1*1442 gpa1p-rG@sD229S
                         his3 leu2 lys2 ste14::trp1::LYS2 ste3*1156 tbt1-1
                         trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
     8362  @             FUS1p-HIS3 can1 far1*1442 gpa1p-rG@sE10K               CP1584           CP1766
                         his3 leu2 lys2 ste14::trp1::LYS2 ste3*1156 tbt1-1
                         trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
     8719  @             FUS1p-HIS3 ade2*3447 ade8*3457
                         can1 far1*1442 gpa1(41)-G@i2 his3 leu2 lys2
                         ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
     9034  @             FUS1p-HIS3 can1 far1*1442 gpa1(41)-
                         G@16(S270P) his3 leu2 lys2 ste14::trp1::LYS2
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
     9434  @             FUS1p-HIS3 can1 cyh2 far1*1442 gpa1(41)-G@i2
                         his3 leu2 lys2 ste14::trp1::LYS2 ste18g6-3841
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
     9438  @             FUS1p-HIS3 can1 far1*1442 gpa1*1163 his3
                         leu2 lys2 ste14::trp1::LYS2 ste18g6-3841
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
     9571  @             FUS1p-HIS3 GPA1-3907 can1 far1*1442 his3
                         leu2 lys2 ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1
                         ura3
----------------------------------------------------------------------------------------------------------------------------------
     9595  @             FUS1p-HIS3 can1 far1*1442 gpa1(41)-G@i2 his3           CP1584           CP3776
                         lys2 ste14::trp1::LYS2 ste3*1156 tbt1-1 ura3
----------------------------------------------------------------------------------------------------------------------------------
     9603  @             D314) FUS1p-HIS3 L291, can1 far1*1442
                         gpa1(41)-G@16(S270P, his3 leu2 lys2
                         ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
     9664  a             FUS1p-HIS3 can1 far1*1442 gpa1*1163 his3
                         leu2 lys2 ste14::trp1::LYS2 ste3*1156
                         tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
     9791  @             FUS1p-HIS3 ade2*3447 ade8*3457
                         can1 far1*1442 gpa1*1163 his3 leu2 lys2
                         ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
</TABLE>

<PAGE>

<TABLE>
<S>        <C>           <C>                                                    <C>              <C>             <C>
----------------------------------------------------------------------------------------------------------------------------------
     9805  @             FUS1p-HIS3 can1 far1*1442 gpa1*1163 his3               CP3390           CP4110
                         leu2 lys2 ste14::trp1::LYS2 ste18g6-
                         3841 ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
     9863  @             FUS1p-HIS3 ade2*3447ade8*3457  can1
                         far1*1442 gpa1(41)-G@16(S270P) his3 leu2 lys2
                         ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
     9875  @             FUS1p-HIS3 ade2*3447 ade8*3457
                         can1 far1*1442 gpa1p-rG@sE10K his3 leu2 lys2
                         ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
     9881  @             FUS1p-HIS3 can1 far1*1442 gpa1*1163 his3               CP1947           CP3390          CP4110
                         leu2 lys2 ste14::trp1::LYS2 ste18g6-
                         3841 ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    10091  @             FUS1p-HIS3 ade2*3447 ade8*3457
                         can1 far1*1442 gpa1*1163 his3 leu2 lys2
                         ste14::trp1::LYS2 ste18g6-3841 ste3*1156 tbt1-1
                         trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    10097                trp1-289
----------------------------------------------------------------------------------------------------------------------------------
    10098                gal4
----------------------------------------------------------------------------------------------------------------------------------
    10099                ade
----------------------------------------------------------------------------------------------------------------------------------
    10100                leu
----------------------------------------------------------------------------------------------------------------------------------
    10101                lys
----------------------------------------------------------------------------------------------------------------------------------
    10103  @             FUS1p-HIS3 ade2*3447 ade8*3457 can1 cyh2
                         far1*1442 gpa1(41)-G@i2 his3 leu2
                         lys2 ste14::trp1::LYS2 ste18g6-3841 ste3*1156
                         tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
</TABLE>

<PAGE>

<TABLE>
<S>        <C>           <C>                                                    <C>              <C>             <C>
----------------------------------------------------------------------------------------------------------------------------------
    10106  @             FUS1p-HIS3 ade2*3447 ade8*3457 can1
                         far1*1442 gpa1p-rG@sE10K;D229S his3
                         leu2 lys2 ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1
                         ura3
----------------------------------------------------------------------------------------------------------------------------------
    10131  @             FUS1p-HIS3 GPA1-3907 ade2*3447 ade8*3457 can1
                         far1*1442 his3 leu2 lys2 ste14::trp1::LYS2
                         ste18g6-3841 ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    10132  @             FUS1p-HIS3 ade2*3447 ade8*3457
                         can1 far1*1442 gpa1(41)-G@16(S270P) his3 leu2
                         lys2 ste14::trp1::LYS2 ste18g6-3841 ste3*1156
                         tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    10151  @             FUS1p-HIS3 GPA1p-G@sD229S ade2*3447
                         ade8*3457 can1 far1*1442 his3 leu2 lys2
                         ste14::trp1::LYS2 ste18g6-3841 ste3*1156 tbt1-1
                         trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    10175  @             FUS1p-HIS3 ade2*3447 ade8*3457
                         can1 far1*1442 gpa1p-rG@sD229S his3 leu2 lys2
                         ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    10199                ura
----------------------------------------------------------------------------------------------------------------------------------
    10319  @             FUS1p-HIS3 ade2*3447 ade8*3457
                         can1 far1*1442 gpa1(41)-G@i3 his3 leu2 lys2
                         ste14::trp1::LYS2 ste18g6-3841 ste3*1156 tbt1-1
                         trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    10519  @             FUS1p-HIS3 GPA1p-G@sE10K ade2*3447
                         ade8*3457 can1 far1*1442 his3 leu2 lys2
                         ste14::trp1::LYS2 ste18g6-3841 ste3*1156 tbt1-1
                         trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    10560  @             FUS1p-HIS3 GPA1-3907 ade2*3447 ade8*3457
                         can1 far1*1442 his3 leu2 lys2 sst2*1056
                         ste14::trp1::LYS2 ste18g6-3841 ste3*1156 tbt1-1
                         trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    10562  @             FUS1p-HIS3 S270P can1 far1*1442 gpa1(41)-
                         G@16 his3 leu2 lys2 ste14::trp1::LYS2 ste18g6-
                         3841 ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    10565  @             FUS1p-HIS3 GPA1p-G@sD229S can1 far1*1442
                         his3 leu2 lys2 ste14::trp1::LYS2 ste18g6-3841
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
</TABLE>

<PAGE>

<TABLE>
<S>        <C>           <C>                                                    <C>              <C>             <C>
----------------------------------------------------------------------------------------------------------------------------------
    10652  @             FUS1p-HIS3 GPA1p-ratG@i1 ade2*3447
                         ade8*3457 can1 far1*1442 his3 leu2 lys2
                         ste14::trp1::LYS2 ste18g6-3841 ste3*1156 tbt1-1
                         trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    10734  a             FUS1p-HIS3 can1 far1*1442 gpa1*1163 his3
                         leu2 lys2 ste14::trp1::LYS2 ste2*
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    10771  a             ade1 cdc24-1 his2 leu2 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    10772  a             ade1 cdc42-1 his2 leu2 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    10942  @             FUS1p-HIS3 can1 far1*1442 gpa1*1163 his3
                         leu2 lys2 ste14::trp1::LYS2 ste18g601-
                         4060 ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    10981  @             FUS1p-HIS3 GPA1-3907 can1 far1*1442 his3
                         leu2 lys2 sst2*2 ste14::trp1::LYS2 ste3*1156 tbt1-
                         1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    11063  @             FUS1p-HIS3 GPA1p-G@sE10K can1 far1*1442
                         his3 leu2 lys2 ste14::trp1::LYS2 ste18g6-3841
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    11066  @             FUS1p-HIS3 GPA1p-G@sE10K;D229S
                         ade2*3447 ade8*3457 can1 far1*1442 his3 leu2
                         lys2 ste14::trp1::LYS2 ste18g6-3841 ste3*1156
                         tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    11067  @             FUS1p-HIS3 GPA1p-G@sE10K;D229S can1
                         far1*1442 his3 leu2 lys2 ste14::trp1::LYS2
                         ste18g6-3841 ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    11366  a             FUS1p-HIS3 GPA1-3907 can1 far1*1442 his3
                         leu2 lys2 ste14::trp1::LYS2 ste2* ste3*1156 tbt1-1
                         trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    11368  a             FUS1p-HIS3 can1 far1*1442 gpa1p-G@sD229S
                         his3 leu2 lys2 ste14::trp1::LYS2 ste2* ste3*1156
                         tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
</TABLE>

<PAGE>

<TABLE>
<S>        <C>           <C>                                                    <C>              <C>             <C>
----------------------------------------------------------------------------------------------------------------------------------
    11647  a             FUS1p-HIS3 can1 far1*1442 gpa1(41)-G@i2 his3
                         leu2 lys2 ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1
                         ura3
----------------------------------------------------------------------------------------------------------------------------------
    11714  @             FUS1p-HIS3 can1 far1*1442 gpa1p-rG@sG226A
                         his3 leu2 lys2 ste14::trp1::LYS2 ste3*1156 tbt1-1
                         trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    11715  @             FUS1p-HIS3 can1 far1*1442 gpa1p-rG@sQ227L
                         his3 leu2 lys2 ste14::trp1::LYS2 ste3*1156 tbt1-1
                         trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    11777  @             FUS1p-HIS3 can1 far1*1442 gpa1*1163 his3               CP1947           CP3390          CP4421
                         leu2 lys2 ste14::trp1::LYS2 ste18g601-
                         4060 ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    11778  @             FUS1p-HIS3 can1 far1*1442 gpa1*1163 his3               CP1179           CP1947          CP4261
                         leu2 lys2 sst2*2 ste14::trp1::LYS2
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    11845  @             FUS1p-HIS3 ade2*3447 ade8*3457 can1
                         far1*1442 gpa1*1163 his3 leu2 lys2
                         sst2*1056 ste14::trp1::LYS2 ste18g6-3841
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    12025  @             FUS1p-HIS3 GPA1p-G@sD229S can1 far1*1442
                         leu2 lys2 ste14::trp1::LYS2 ste3*1156
                         stp22::TRP1ste18g6-3841 tbt1-1
                         trp1his3ade2*3447ade8*3457 ura3
----------------------------------------------------------------------------------------------------------------------------------
    12201  @             FUS1p-HIS3 can1 far1*1442 gpa1*1163 his3
                         leu2 lys2 ste14::trp1::LYS2 ste18g6-
                         3841 ste3*1156 stp22::hisG tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    12220  a             FUS1p-HIS3 can1 far1*1442 gpa1(41)-G@i2 his3
                         leu2 lys2 ste14::trp1::LYS2 ste2*1154 ste3*1156
                         tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    12357  @             FUS1p-HIS3 GPA1-3907 can1 far1*1442 his3
                         leu2 lys2 sst2*2 ste14::trp1::LYS2 ste3*1156
                         stp22::hisG tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    12444  @             FUS1p-HIS3 can1 far1*1442 gpa1*1163 his3 leu2
                         lys2 ste14::trp1::LYS2 ste3*1156 ste5 tbt1-1 trp1
                         ura3
----------------------------------------------------------------------------------------------------------------------------------
</TABLE>

<PAGE>

<TABLE>
<S>        <C>           <C>                                                    <C>              <C>             <C>
----------------------------------------------------------------------------------------------------------------------------------
    12660  @             FUS1p-HIS3 can1 far1*1442 gpa1(41)-G@i3 his3           CP1584           CP5095
                         leu2 lys2 ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1
                         ura3
----------------------------------------------------------------------------------------------------------------------------------
    12670  @             FUS1p-HIS3 GPA1p-G@sN254D can1 far1*1442
                         his3 leu2 lys2 ste14::trp1::LYS2 ste18g6-3841
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    12872  @             FUS1p-HIS3 can1 far1*1442 gpa1(41)-
                         G@i2A235T his3  leu2 lys2 ste14::trp1::LYS2
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    12946  @             FUS1p-HIS3 GPA1G@i2(5) can1 far1*1442 his3
                         leu2 lys2 sst2*2 ste14::trp1::LYS2 ste3*1156 tbt1-
                         1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    12949  @             FUS1p-HIS3 GPA1-G@12(5) can1 far1*1442 his3
                         leu2 lys2 sst2*2 ste14::trp1::LYS2 ste3*1156 tbt1-
                         1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    12950  @             FUS1p-HIS3 GPA1-G@q(5) can1 far1*1442 his3
                         leu2 lys2 sst2*2 ste14::trp1::LYS2 ste3*1156 tbt1-
                         1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    12952  @             FUS1p-HIS3 GPA1-G@s(5) can1 far1*1442 his3
                         leu2 lys2 sst2*2 ste14::trp1::LYS2 ste3*1156 tbt1-
                         1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    12954  @             FUS1p-HIS3 can1 far1*1442 gpa1*1163 his3
                         leu2 lys2 sst2*2 ste14::trp1::LYS2
                         ste18*2377 ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    12970  @             FUS1p-HIS3 can1 far1*1442 gpa1*1163 his3
                         leu2 lys2 ste14::trp1::LYS2 ste20::KanR
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    12971  @             FUS1p-HIS3 can1 far1*1442 gpa1*1163 his3
                         leu2 lys2 ste14::trp1::LYS2 ste20::KanR
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    13189  @             FUS1p-HIS3 can1 far1*1442 gpa1*1163 his3               CP1947           CP3390          CP5116
                         leu2 lys2 ste14::trp1::LYS2 ste18g6-
                         3841 ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
</TABLE>

<PAGE>

<TABLE>
<S>        <C>           <C>                                                    <C>              <C>             <C>
----------------------------------------------------------------------------------------------------------------------------------
    13193  @             FUS1p-HIS3 can1 far1*1442 gpa1*1163 his3
                         leu2 lys2 sst2*2 ste14::trp1::LYS2
                         ste18g6-3841 ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    13385  @             FUS1p-HIS3 GPA1G@i2(5) ade2*3447
                         ade8*3457 can1 far1*1442 his3 leu2 lys2
                         sst2*1056 ste14::trp1::LYS2 ste18g6-3841
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    13387  @             FUS1p-HIS3 GPA1G@12(5) ade2*3447
                         ade8*3457 can1 far1*1442 his3 leu2 lys2
                         sst2*1056 ste14::trp1::LYS2 ste18g6-3841
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    13389  @             FUS1p-HIS3 GPA1G@q(5) ade2*3447
                         ade8*3457 can1 far1*1442 his3 leu2 lys2
                         sst2*1056 ste14::trp1::LYS2 ste18g6-3841
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    13391  @             FUS1p-HIS3 GPA1G@s(5) ade2*3447
                         ade8*3457 can1 far1*1442 his3 leu2 lys2
                         sst2*1056 ste14::trp1::LYS2 ste18g6-3841
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    13393  @             FUS1p-HIS3 GPA1G@i2(5) can1 far1*1442 his3
                         leu2 lys2 sst2*2 ste14::trp1::LYS2 ste18g6-3841
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    13395  @             FUS1p-HIS3 GPA1G@12(5) can1 far1*1442 his3
                         leu2 lys2 sst2*2 ste14::trp1::LYS2 ste18g6-3841
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    13397  @             FUS1p-HIS3 GPA1G@q(5) can1 far1*1442 his3
                         leu2 lys2 sst2*2 ste14::trp1::LYS2 ste18g6-3841
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    13399  @             FUS1p-HIS3 GPA1G@s(5) can1 far1*1442 his3
                         leu2 lys2 sst2*2 ste14::trp1::LYS2 ste18g6-3841
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    13771  @             FUS1p-HIS3 can1 far1*1442 gpa1(41)-G@16
                         his3 leu2 lys2 ste14::trp1::LYS2 ste3*1156 tbt1-1
                         trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    13934  @             FUS1p-HIS3 can1 far1*1442 gpa1*1163 his3               CP1947           CP4259          CP5298
                         leu2 lys2 ste14::trp1::LYS2 ste18g6-
                         3841 ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
</TABLE>

<PAGE>

<TABLE>
<S>        <C>           <C>                                                    <C>              <C>             <C>
----------------------------------------------------------------------------------------------------------------------------------
    13937  @             FUS1p-HIS3 can1 cyh2 far1*1442 gpa1(41)-G@i2
                         his3 leu2 lys2 ste14::trp1::LYS2 ste18g26-5261
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    13947  @             FUS1p-HIS3 STE18g26-5363 can1 far1*1442
                         gpa1*1163 his3 leu2 lys2 ste14::trp1::LYS2
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    14011  @             FUS1p-HIS3 GPA1p-G@sE10K can1 far1*1442                CP1584           CP5396
                         his3 leu2 lys2 ste14::trp1::LYS2 ste18g6-3841
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    14012  @             FUS1p-HIS3 GPA1p-G@sD229S can1 far1*1442               CP1947           CP5394
                         leu2 lys2 ste14::trp1::LYS2 ste3*1156
                         stp22::TRP1ste18g6-3841 tbt1-1
                         trp1his3ade2*3447ade8*3457  ura3
----------------------------------------------------------------------------------------------------------------------------------
    14016  @             FUS1p-HIS3 can1 far1*1442 gpa1::klURA3 his3
                         leu2 lys2 sst2*2 ste14::trp1::LYS2 ste18g6-3841
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    14078  @             FUS1p-HIS3 ade2*3447 ade8*3457
                         can1 cyh2 far1*1442 gpa1(41)-G@i2 his3 leu2
                         lys2 ste14::trp1::LYS2 ste18g6-3841 ste3*1156
                         ste5*4276 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    14637  @             E10K FUS1p-HIS3 GPA1p-G@s can1 far1*1442
                         his3 leu2 lys2 pho3*4602 pho4::KAN
                         ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    14638  @             E10K;A249T FUS1p-HIS3 GPA1p-G@s can1
                         cyh2 far1*1442 his3  leu2 lys2 ste14::trp1::LYS2
                         ste18g6-3841 ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    14640  @             FUS1p-HIS3 GPA1p-GPA1-G@z(5) can1 cyh2
                         far1*1442 his3 leu2 lys2 ste14::trp1::LYS2
                         ste18g6-3841 ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    14706  @             ste18g6-3841 GPA+3907 sst2*2 far1*1442 tbt1-1
                         fus1-HIS3 can1 ste14::trp1::LYS2 ste3*1156 lys2
                         ura3 leu2 trp1 his3
----------------------------------------------------------------------------------------------------------------------------------
    15070  @             FUS1p-HIS3 GPA1G@z(5) STE18g6-3841 can1
                         far1*1442 his3 leu2 lys2 sst2*2 ste14::trp1::LYS2
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
</TABLE>

<PAGE>

<TABLE>
<S>        <C>           <C>                                                    <C>              <C>             <C>
----------------------------------------------------------------------------------------------------------------------------------
    15072  @             FUS1p-HIS3 GPA1G@16(6) STE18g6-3841 can1
                         far1*1442 his3 leu2 lys2 sst2*2 ste14::trp1::LYS2
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    15074  @             FUS1p-HIS3 GPA1G@13(5) STE18g6-3841 can1
                         far1*1442 his3 leu2 lys2 sst2*2 ste14::trp1::LYS2
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    15203  a             lys9
----------------------------------------------------------------------------------------------------------------------------------
    15204  @             lys9
----------------------------------------------------------------------------------------------------------------------------------
    15347  @             FUS1p-HIS3 GPA1G@z(5) can1 far1*1442 his3
                         leu2 lys2 sst2*2 ste14::trp1::LYS2 ste3*1156 tbt1-
                         1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    15349  @             FUS1p-HIS3 GPA1G@13(5) can1 far1*1442 his3
                         leu2 lys2 sst2*2 ste14::trp1::LYS2 ste3*1156 tbt1-
                         1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    15351  @             FUS1p-HIS3 GPA1G@16(6) can1 far1*1442 his3
                         leu2 lys2 sst2*2 ste14::trp1::LYS2 ste3*1156 tbt1-
                         1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    15427  @             E10K FUS1p-HIS3 GPA1p-G@s can1 far1*1442               CP1766           CP5223
                         his3 leu2 lys2 pho3*4602 pho4::KAN
                         ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    15659  @             FUS1p-HIS3 can1 far1*1442 gpa1*1163 his3 leu2
                         lys2 sst2*2 ste14::trp1::LYS2 ste3*1156
                         stp22::hisG tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    15836  @             FUS1p-HIS3 can1 far1*1442 gpa1*1163 his3 leu2          CP1930           CP1947          CP5042
                         lys2 sst2*2 ste14::trp1::LYS2 ste3*1156
                         stp22::hisG tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    16160  @             FUS1p-HIS3 GPA1-3907 can1 far1*1442 his3
                         leu2 lys2 sst2*2 ste14::trp1::LYS2 ste18g26-5363
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
</TABLE>

<PAGE>

<TABLE>
<S>        <C>           <C>                                                    <C>              <C>             <C>
----------------------------------------------------------------------------------------------------------------------------------
    16463  @             FUS1p-HIS3 GPA1p-G@sD229S can1 far1*1442
                         his3 leu2 lys2 ste14::trp1::LYS2 ste18g26-5363
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    16637  @             FUS1p-HIS3 GPA1-3907 can1 far1*1442 his3
                         leu2 lys2 sst2*2 ste14::trp1::LYS2 ste3*1156 tbt1-
                         1 trp1::TRP1::nFUS1p-GFPS65T
                         ura3::URA3::nFUS1p-GFPS65T
----------------------------------------------------------------------------------------------------------------------------------
    16961  @             FUS1p-HIS3 GPA1p-G@sD229S STE18g6-3841
                         ade2*3447 ade8*3457 can1 far1*1442 his3 leu2
                         lys2 ste14::trp1::LYS2 ste3*1156 stp22::hisG tbt1-
                         1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    17002  @             FUS1p-HIS3 G@q(1-11)-GPA1(6-467)-G@q(5)
                         STE18g6-3841 can1 far1*1442 his3 leu2 lys2
                         sst2*2 ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1
                         ura3
----------------------------------------------------------------------------------------------------------------------------------
    17004  @             FUS1p-HIS3 STE18g6-3841 can1 far1*1442 his3
                         leu2 lys2 ratG@sE10K-G@q(6) sst2*2
                         ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    17007  @             FUS1p-HIS3 STE18g6-3841 can1 far1*1442 his3
                         leu2 lys2 ratG@sD229S-G@q(6) sst2*2
                         ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    17008  @             FUS1p-HIS3 GPA1-G@s(6) STE18g6-3841 can1
                         far1*1442 his3 leu2 lys2 sst2*2 ste14::trp1::LYS2
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    17010  @             FUS1p-HIS3 G@q(1-21)-GPA1(24-467)-G@q(5)
                         STE18g6-3841 can1 far1*1442 his3 leu2 lys2
                         sst2*2 ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1
                         ura3
----------------------------------------------------------------------------------------------------------------------------------
    17012  @             FUS1p-HIS3 G@q(1-11)-GPA1(6-467)-G@q(5)
                         can1 far1*1442 his3 leu2 lys2 sst2*2
                         ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    17014  @             FUS1p-HIS3 can1 far1*1442 his3 leu2 lys2
                         ratG@sE10K-G@q(6) sst2*2 ste14::trp1::LYS2
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    17016  @             FUS1p-HIS3 can1 far1*1442 his3 leu2 lys2
                         ratG@sD229S-G@q(6) sst2*2 ste14::trp1::LYS2
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
</TABLE>

<PAGE>

<TABLE>
<S>        <C>           <C>                                                    <C>              <C>             <C>
----------------------------------------------------------------------------------------------------------------------------------
    17018  @             FUS1p-HIS3 GPA1-G@s(6) can1 far1*1442 his3
                         leu2 lys2 sst2*2 ste14::trp1::LYS2 ste3*1156 tbt1-
                         1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    17020  @             FUS1p-HIS3 G@q(1-21)-GPA1(24-467)-G@q(5)
                         can1 far1*1442 his3 leu2 lys2 sst2*2
                         ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    17062  @             FUS1p-HIS3 GPA1-G@i2(5) can1 far1*1442 his3
                         leu2 lys2 pho3*4602 pho4::KAN sst2*1056
                         ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    17063  @             FUS1p-HIS3 GPA1-G@q(5) can1 far1*1442 his3
                         leu2 lys2 pho3*4602 pho4::KAN sst2*1056
                         ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    17426  @             FUS1p-HIS3 his3 lys2 sst2*2 GPA1G@q(5) can1
                         far1*1442 leu2 ste14::trp1::LYS2 ste3*1156 tbt1-1
                         trp1 ura3 STE18g26-5363
----------------------------------------------------------------------------------------------------------------------------------
    17549  @             FUS1p-HIS3 can1 far1*1442 gpa1*1163 his3
                         kre1::HisG leu2 lys2 ste14::trp1::LYS2 ste3*1156
                         tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    17551  @             FUS1p-HIS3 can1 far1*1442 gpa1*1163 his3
                         kre1::HisG leu2 lys2 sst2*2 ste14::trp1::LYS2
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    17553  @             FUS1p-HIS3 STE18g6-3841 can1 far1*1442
                         gpa1*1163 his3 kre1::HisG leu2 lys2
                         ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    17555  @             FUS1p-HIS3 STE18g6-3841 can1 far1*1442
                         gpa1*1163 his3 kre1::HisG leu2 lys2 sst2*2
                         ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    17624  a             FUS1p-HIS3 GPA1-3907 can1 far1*1442 his3
                         leu2 lys2 sst2*2 ste14::trp1::LYS2 ste3*1156 tbt1-
                         1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    17625  @             FUS1p-HIS3 GPA1-3907 can1 far1*1442 his3
                         leu2 lys2 nap-16 sst2*2 ste14::trp1::LYS2
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
</TABLE>


<PAGE>

<TABLE>
<S>        <C>           <C>                                                    <C>              <C>             <C>
----------------------------------------------------------------------------------------------------------------------------------
    17626  @             FUS1p-HIS3 GPA1-3907 can1 far1*1442 his3
                         leu2 lys2 nap-17 sst2*2 ste14::trp1::LYS2
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    17627  @             FUS1p-HIS3 GPA1-3907 can1 far1*1442 his3
                         leu2 lys2 nap-39 sst2*2 ste14::trp1::LYS2
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    17628  @             FUS1p-HIS3 GPA1-3907 can1 far1*1442 his3
                         leu2 lys2 nap-43 sst2*2 ste14::trp1::LYS2
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    17629  @             FUS1p-HIS3 GPA1-3907 can1 far1*1442 his3
                         leu2 lys2 nap-61 sst2*2 ste14::trp1::LYS2
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    17630  @             FUS1p-HIS3 GPA1-3907 can1 far1*1442 his3
                         leu2 lys2 nap-63 sst2*2 ste14::trp1::LYS2
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    17631  @             FUS1p-HIS3 GPA1-3907 can1 far1*1442 his3
                         leu2 lys2 nap-64 sst2*2 ste14::trp1::LYS2
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    17632  @             FUS1p-HIS3 can1 far1*1442 gpa1*1163 his3 leu2
                         lys2 nap-16 sst2*2 ste14::trp1::LYS2 ste3*1156
                         tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    17633  @             FUS1p-HIS3 can1 far1*1442 gpa1*1163 his3 leu2
                         lys2 nap-17 sst2*2 ste14::trp1::LYS2 ste3*1156
                         tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    17634  @             FUS1p-HIS3 can1 far1*1442 gpa1*1163 his3 leu2
                         lys2 nap-39 sst2*2 ste14::trp1::LYS2 ste3*1156
                         tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    17635  @             FUS1p-HIS3 can1 far1*1442 gpa1*1163 his3 leu2
                         lys2 nap-43 sst2*2 ste14::trp1::LYS2 ste3*1156
                         tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    17636  @             FUS1p-HIS3 can1 far1*1442 gpa1*1163 his3 leu2
                         lys2 nap-61 sst2*2 ste14::trp1::LYS2 ste3*1156
                         tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
</TABLE>

<PAGE>

<TABLE>
<S>        <C>           <C>                                                    <C>              <C>             <C>
----------------------------------------------------------------------------------------------------------------------------------
    17637  @             FUS1p-HIS3 can1 far1*1442 gpa1*1163 his3 leu2
                         lys2 nap-63 sst2*2 ste14::trp1::LYS2 ste3*1156
                         tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    17638  @             FUS1p-HIS3 can1 far1*1442 gpa1*1163 his3 leu2
                         lys2 nap-64 sst2*2 ste14::trp1::LYS2 ste3*1156
                         tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    17749  @             FUS1p-HIS3 GPA1G@s(5) STE18g6-3841 can1                CP1584           CP1947          CP6281
                         far1*1442 his3 leu2 lys2 sst2*2 ste14::trp1::LYS2
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    17750  @             FUS1p-HIS3 GPA1G@s(5) STE18g6-3841 can1                CP1584           CP1947          CP6281
                         far1*1442 his3 leu2 lys2 sst2*2 ste14::trp1::LYS2
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    17751  @             FUS1p-HIS3 GPA1-G@i2(5) can1 dap2*6253
                         far1*1442 his3 leu2 lys2 sst2*2 ste13*6077
                         ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    17843  a             FUS1p-HIS3 bar1::hisG far1*1442 gpa1*1163
                         his3 leu2 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    17879  @             FUS1p-HIS3 GPA1-3907 can1 far1*1442 his3
                         leu2::LEU2::PGKp-A2aR lys2 sst2*2
                         ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    17880  a             FUS1p-HIS3 bar1::hisG his3 leu2 sst2*1056
                         ste2*1154 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    18039  @             FUS1p-HIS3 GPA1p-G@sD229S STE18g6-3841                 CP1584           CP1947          CP4111
                         ade2*3447 ade8*3457 can1 far1*1442 his3 leu2
                         lys2 ste14::trp1::LYS2 ste3*1156 stp22::hisG tbt1-
                         1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    18043  @             FUS1p-HIS3 GPA1G@o(5) STE18g6-3841 can1
                         far1*1442 his3 leu2 lys2 sst2*2 ste14::trp1::LYS2
                         ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    18045  @             FUS1p-HIS3 GPA1G@o(5) can1 far1*1442 his3
                         leu2 lys2 sst2*2 ste14::trp1::LYS2 ste3*1156 tbt1-
                         1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
</TABLE>


<PAGE>

<TABLE>
<S>        <C>           <C>                                                    <C>              <C>             <C>
----------------------------------------------------------------------------------------------------------------------------------
    18158  @             FUS1p-HIS3 GPA1-3907 can1 far1*1442 his3
                         leu2 lys2 nap-16 sst2*2 ste14::trp1::LYS2
                         ste3*1156 stp22::hisG tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    18189  @             FUS1p-HIS3 GPA1-3907 can1 far1*1442 his3
                         leu2 lys2 nap-16 sst2*2 ste14::trp1::LYS2
                         ste3*1156 stp22::hisG tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    18190  @             FUS1p-HIS3 GPA1G@z(5) STE18g6-3841 can1
                         far1*1442 his3 kre1::hisG leu2 lys2 sst2*2
                         ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    18222  @             FUS1p-HIS3 GPA1G@z(5) STE18g6-3841 can1                CP1947           CP6131
                         far1*1442 his3 kre1::hisG leu2 lys2 sst2*2
                         ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    18774  @             FUS1p-HIS3 lys2 can1 far1*1442 his3 leu2
                         pho3*4602 pho4::KAN sst2*1056
                         ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1 ura3
                         GPA1p-GPA1-G@s(6)
----------------------------------------------------------------------------------------------------------------------------------
    19029  @             FUS1p-HIS3 G@q(1-21)-GPA1(24-467)-G@q(5)
                         STE18g6-3841 can1 far1*1442 his3 kre1::HisG
                         leu2 lys2 sst2*2 ste14::trp1::LYS2 ste3*1156 tbt1-
                         1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    19039  @             FUS1p-HIS3 GPA1p-GPA1-G@s(6) can1                      CP5226           CP6281
                         far1*1442 his3 leu2 lys2 pho3*4602 pho4::KAN
                         sst2*1056 ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1
                         ura3
----------------------------------------------------------------------------------------------------------------------------------
    19055  @             FUS1p-HIS3 GPA1p-GPA1-G@s(6) can1                      CP5226           CP1766
                         far1*1442 his3 leu2 lys2 pho3*4602 pho4::KAN
                         sst2*1056 ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1
                         ura3
----------------------------------------------------------------------------------------------------------------------------------
    19063  @             FUS1p-HIS3 GPA1-G@q(5) GPA1G@q(5) can1                 CP6513           CP1930
                         far1*1442 his3 leu2 lys2 pho3*4602 pho4::KAN
                         sst2*1056 ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1
                         ura3
----------------------------------------------------------------------------------------------------------------------------------
    19493  @             FUS1p-HIS3 his3 lys2 sst2*2 can1 far1*1442 leu2
                         ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1 ura3
                         GPA1p-G@11(1-11)-GPA1(6-467)-G@q(355-
                         359)-GPA1t
----------------------------------------------------------------------------------------------------------------------------------
    19496  @             FUS1p-HIS3 his3 lys2 GPA1G@q(5) can1 cyh2
                         far1*1442 leu2 pho3*4602 pho4::KANMX2
                         sst2*1056 ste14::trp1::LYS2 ste3*1156 tbt1-1
                         ura3 trp1::TRP1::STE12p-
                         SV40NLS(MGAPPKKKRKVA)-PHO4(228-312)-
                         STE12(1-587,EAS,670-688)-ADH1t
----------------------------------------------------------------------------------------------------------------------------------
</TABLE>

<PAGE>

<TABLE>
<S>        <C>           <C>                                                    <C>              <C>             <C>
----------------------------------------------------------------------------------------------------------------------------------
    19507  @             FUS1p-HIS3 his3 lys2 sst2*2 can1 far1*1442 leu2
                         ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1 ura3
                         GPA1p-G@q(1-24)-GPA1(27-467)-G@q(355-
                         359)-GPA1t
----------------------------------------------------------------------------------------------------------------------------------
    19509  @             FUS1p-HIS3 his3 lys2 sst2*2 can1 far1*1442 leu2
                         ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1 ura3
                         GPA1p-G@q(1-32)-GPA1(35-467)-G@q(355-
                         359)-GPA1t
----------------------------------------------------------------------------------------------------------------------------------
    19511  @             FUS1p-HIS3 his3 lys2 sst2*2 can1 far1*1442 leu2
                         ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1 ura3
                         STE18g6-3841 GPA1p-G@11(1-11)-GPA1(6-
                         467)-G@q(355-359)-GPA1t
----------------------------------------------------------------------------------------------------------------------------------
    19512  @             FUS1p-HIS3 his3 lys2 sst2*2 can1 far1*1442 leu2
                         ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1 ura3
                         STE18g6-3841 GPA1p-G@11(1-11)-GPA1(6-
                         467)-G@q(355-359)-GPA1t
----------------------------------------------------------------------------------------------------------------------------------
    19513  @             FUS1p-HIS3 his3 lys2 sst2*2 can1 far1*1442 leu2
                         ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1 ura3
                         STE18g6-3841
----------------------------------------------------------------------------------------------------------------------------------
    19514  @             FUS1p-HIS3 his3 lys2 sst2*2 can1 far1*1442 leu2
                         ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1 ura3
                         STE18g6-3841
----------------------------------------------------------------------------------------------------------------------------------
    19515  @             FUS1p-HIS3 his3 lys2 sst2*2 can1 far1*1442 leu2
                         ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1 ura3
                         STE18g6-3841 GPA1p-G@q(1-32)-GPA1(35-
                         467)-G@q(355-359)-GPA1t
----------------------------------------------------------------------------------------------------------------------------------
    19598  @             FUS1p-HIS3 GPA1-G@i2(5) his3 lys2 can1                 CP6555           CP5095
                         far1*1442 leu2 pho3*4602 pho4::KAN sst2*1056
                         ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1 ura3
----------------------------------------------------------------------------------------------------------------------------------
    19608  @             FUS1p-HIS3 lys2 can1 far1*1442 gpa1*1163 his3
                         leu2 ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1 ura3
                         STE18g26-5363 GPA1-G@s(5)-5102
----------------------------------------------------------------------------------------------------------------------------------
    19608  @             FUS1p-HIS3 lys2 can1 far1*1442 gpa1*1163 his3
                         leu2 ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1 ura3
                         STE18g26-5363 GPA1-G@s(5)-5102
----------------------------------------------------------------------------------------------------------------------------------
    19625  @             FUS1p-HIS3 his3 lys2 GPA1G@q(5) can1 cyh2              CP1930
                         far1*1442 leu2 pho3*4602 pho4::KANMX2
                         sst2*1056 ste14::trp1::LYS2 ste3*1156 tbt1-1
                         ura3 trp1::TRP1::STE12p-
                         SV40NLS(MGAPPKKKRKVA)-PHO4(228-312)-
                         STE12(1-587,EAS,670-688)-ADH1t
----------------------------------------------------------------------------------------------------------------------------------
</TABLE>

<PAGE>

<TABLE>
<S>        <C>           <C>                                                    <C>              <C>             <C>
----------------------------------------------------------------------------------------------------------------------------------
    19888  @             FUS1p-HIS3 GPA1p-G@sD229S his3 lys2
                         ade2*3447 ade8*3457 can1 far1*1442 leu2
                         ste14::trp1::LYS2 ste18*2377 ste3*1156
                         stp22::hisG tbt1-1 trp1 ura3 ste18g26-5363
----------------------------------------------------------------------------------------------------------------------------------
    19888  @             FUS1p-HIS3 GPA1p-G@sD229S his3 lys2
                         ade2*3447 ade8*3457 can1 far1*1442 leu2
                         ste14::trp1::LYS2 ste18*2377 ste3*1156
                         stp22::hisG tbt1-1 trp1 ura3 ste18g26-5363
----------------------------------------------------------------------------------------------------------------------------------
    19889  @             FUS1p-HIS3 GPA1p-G@sD229S his3 lys2                    CP6280           CP5899          CP6684
                         ade2*3447 ade8*3457 can1 far1*1442 leu2
                         ste14::trp1::LYS2 ste18*2377 ste3*1156
                         stp22::hisG tbt1-1 trp1 ura3 ste18g26-5363
----------------------------------------------------------------------------------------------------------------------------------
    19910  @             FUS1p-HIS3 his3 lys2 sst2*2 can1 far1*1442 leu2
                         ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1 ura3
                         GPA1G@z(5) STE18g6-3841
----------------------------------------------------------------------------------------------------------------------------------
    19928  @             FUS1p-HIS3 his3 lys2 sst2*2 can1 far1*1442 leu2        CP6490           CP1584
                         ste14::trp1::LYS2 ste3*1156 tbt1-1 trp1 ura3
                         GPA1G@16(6)
----------------------------------------------------------------------------------------------------------------------------------
</TABLE>

All Mammalian Cell Lines


<PAGE>


                                    EXHIBIT B

Note: US Provisional Applications have serial numbers starting with "60" and
docket number ending in "-1"
Note: Foreign Applications are shown in Bold w/ Shading
<TABLE>
<CAPTION>
<S>                  <C>                   <C>                                <C>               <C>
Docket No.            Serial No.            Title:                              Filing Date      Status

CPI-012CP9            09/201,396            Methods and Compositions for        11/30/98         PENDING
                                            Identifying Receptor Effectors

CPI-012CP9PC          PCT/US99/27909        Methods and Compositions for        11/24/99         PENDING
                                            Identifying Receptor Effectors

CPI-088               09/378,046            Cells Having Amplified Signal       8/30/99          PENDING
                                            Transduction Pathway Responses
                                            and Uses Therefor

CPI-091               09/305,923            Yeast Cells Having Mutations        5/5/99           PENDING
                                            in STP22 and Uses Therefor

CPI-096               09/426,332            Yeast Cells Having Mutations        10/25/99         PENDING
                                            in CAV1 and Uses Therefor

CPI-099               09/362,286            Expression of G Protein             7/27/99          PENDING
                                            Coupled Receptors with Altered
                                            Ligand Binding and/or Coupling
                                            Properties

CPI-102               09/241,888            Cell Based Signal Generation        2/1/99           PENDING

CPI-122-1             60/153,300            Yeast Alpha Agglutinins and         9/10/99          PENDING
                                            Use Thereof as Indicators of                       (Conversion
                                            Activation of the Yeast                          date is 9/09/00)
                                            Pheromone Response Pathway

CPI-123-1             60/139,021            Mating Factor System for            6/14/99          PENDING
                                            Detection of a Functional Inter-                   (Conversion
                                            action  Between A Compound                        date is 6/13/00)
                                            and a Cellular Receptor
</TABLE>