AURORA BIOSCIENCES CORP
10-Q, 1998-11-16
COMMERCIAL PHYSICAL & BIOLOGICAL RESEARCH
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<PAGE>     1
                                UNITED STATES
                      SECURITIES AND EXCHANGE COMMISSION
                           WASHINGTON, D.C.  20549


                                  FORM 10-Q


[X]   QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
      EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED September 30, 1998

                                      or

[ ]   TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
      EXCHANGE ACT OF 1934


Commission File Number:  0-22669
                         -------


                        AURORA BIOSCIENCES CORPORATION
           ------------------------------------------------------
           (Exact name of registrant as specified in its charter)

           Delaware                                      33-0669859
- ----------------------------------         ------------------------------------
(State or other jurisdiction of            (I.R.S. Employer Identification No.)
 incorporation or organization)

11010 Torreyana Road, San Diego, CA                         92121
- -----------------------------------         -----------------------------------
(Address of principal executive offices)                 (Zip code)

                                (619) 452-5000
               ---------------------------------------------------
               (Registrant's telephone number, including area code)

- -------------------------------------------------------------------------------
               (Former name, former address and former fiscal year, 
                          if changed since last report)


Indicate by check mark whether the registrant(1) has filed all reports required
to be filed by Section 13 or 15(d)of the Securities Exchange Act of 1934 during
the preceding 12 months(or such shorter period that the registrant was required
to file such reports), and (2) has been subject to such filing requirements for
the past 90 days.  Yes  [X]  No  [ ]       	

Indicate the number of shares outstanding of each of the issuer's classes of
common stock, as of the latest practicable date.
                                                                 Outstanding at
           Class                                                October 31, 1998
           -----                                                ----------------
Common Stock, $.001 par value                                      16,972,577




<PAGE>     2

                          AURORA BIOSCIENCES CORPORATION

                                   FORM 10-Q

                                     INDEX

                                                                        Page No.
                                                                        --------

PART I.  FINANCIAL INFORMATION

  ITEM 1.  Financial Statements

    Balance Sheets - September 30, 1998 (Unaudited) and December 31, 1997......3

    Statements of Operations (Unaudited) - Three and nine months ended
    September 30, 1998 and 1997................................................4

    Statements of Cash Flows (Unaudited) - Nine months ended 
    September 30, 1998 and 1997................................................5

    Notes to Financial Statements (Unaudited)..................................6

  ITEM 2.  Management's Discussion and Analysis of Financial Condition
           and Results of Operations...........................................8

PART II.  OTHER INFORMATION

  ITEM 2.  Changes in Securities and Use of Proceeds..........................13

  ITEM 6.  Exhibits and Reports on Form 8-K...................................13

SIGNATURE.....................................................................14


<PAGE>     3
                        PART I - FINANCIAL INFORMATION
   
ITEM 1.  Financial Statements.
    
                        AURORA BIOSCIENCES CORPORATION
                                BALANCE SHEETS
<TABLE>
<CAPTION>
                                                                 September 30,         December 31,
                                                                    1998                  1997
                                                                -------------        ------------- 
                                                                  (Unaudited)            (Note)
                              ASSETS
<S>                                                             <C>                  <C> 
Current assets:   
   Cash and cash equivalents                                   $    8,660,411       $   23,168,690
   Investment securities, available-for-sale                       23,161,905           25,737,734
   Accounts receivable under collaborative agreements               4,558,618            3,207,166
   Prepaid expenses                                                   881,171              563,017
   Other current assets                                             1,165,367              763,330
                                                                -------------        -------------
     Total current assets                                          38,427,472           53,439,937
Equipment, furniture and leaseholds, net                           10,933,727            6,691,939
Notes receivable from officers and employees                          260,000              290,000
Restricted cash                                                     1,080,284            1,311,923
Other assets                                                        5,162,803            1,302,033
                                                                -------------        -------------
                                                               $   55,864,286       $   63,035,832
                                                                =============        =============
                   LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:   
   Accounts payable                                            $    4,107,260       $    1,111,946
   Accrued compensation                                               449,416              278,852
   Other current liabilities                                               --              227,778
   Unearned revenue                                                 2,923,333            2,324,001
   Capital lease obligations, current portion                       1,726,681            1,153,185
                                                                -------------        -------------
      Total current liabilities                                     9,206,690            5,095,762
   
Capital lease obligations, less current portion                     4,425,435            3,421,652
Other noncurrent liabilities                                          155,528              154,346
   
Stockholders' equity:   
   Common stock, $.001 par value, 50,000,000 shares 
     authorized, 16,972,427 and 17,032,885 shares issued 
     and outstanding at September 30, 1998 (unaudited) and 
     December 31, 1997, respectively                                   16,972               17,033
   Additional paid-in capital                                      61,045,809           60,497,472
   Deferred compensation                                           (2,190,507)          (3,072,560)
   Accumulated deficit                                            (16,795,641)          (3,077,873)
                                                                -------------        -------------
     Total stockholders' equity                                    42,076,633           54,364,072
                                                                -------------        -------------
                                                               $   55,864,286       $   63,035,832
                                                                =============        ============= 
</TABLE>
Note:  The balance sheet at December 31, 1997 has been derived from the audited
       financial statements at that date but does not include all of the 
       information and footnotes required by generally accepted accounting 
       principles for complete financial statements.

                             See accompanying notes.

<PAGE>    4
                        AURORA BIOSCIENCES CORPORATION
                           STATEMENTS OF OPERATIONS 
                                  (UNAUDITED)
<TABLE>
<CAPTION>            
                                               Three Months Ended            Nine Months Ended 
                                                  September 30,                 September 30,
                                               1998           1997           1998           1997
                                           ------------   ------------   ------------   ------------
<S>                                        <C>            <C>            <C>            <C> 
Revenue:
   Screening systems                       $  6,343,341   $  2,604,056   $  9,883,341   $  3,852,056
   Screening services                         1,539,995        922,907      4,021,355      2,270,407
   License fees                               1,262,501        487,500      4,287,501      1,462,500
                                           ------------   ------------   ------------   ------------
     Total revenue                            9,145,837      4,014,463     18,192,197      7,584,963
                     
Operating expenses:       
   Cost of screening systems                  6,586,720        996,771     14,068,172      3,263,254
   Cost of screening services                   522,205        567,437      2,018,000      1,374,198
   Research and development                   4,053,497      1,289,841     13,005,576      3,132,912
   Selling, general and administrative        1,871,001        829,440      4,307,355      2,223,820
                                           ------------   ------------   ------------   ------------
     Total operating expenses                13,033,423      3,683,489     33,399,103      9,994,184
                                           ------------   ------------   ------------   ------------
Loss from operations                         (3,887,586)       330,974    (15,206,906)    (2,409,221)
       
Interest income                                 554,552        666,338      1,970,581      1,098,180
Interest expense                               (168,018)      (100,553)      (481,443)      (236,374)
                                           ------------   ------------   ------------   ------------  
Net income(loss)                           $ (3,501,052)   $   896,759  $ (13,717,768)  $ (1,547,415)
                                           ============   ============   ============   ============
       
Basic net income (loss) per share          $      (0.21)   $      0.06  $       (0.85)  $      (0.23)
                                           ============   ============   ============   ============
       
Diluted net income (loss) per share        $      (0.21)   $      0.05  $       (0.85)  $      (0.23)
                                           ============   ============   ============   ============
       
Shares used in computing: 
      
  Basic net income (loss) per share          16,417,747     15,597,573     16,219,425      6,684,138
                                           ============   ============   ============   ============

  Diluted net income (loss) per share        16,417,747     17,514,030     16,219,425      6,684,138
                                           ============   ============   ============   ============
</TABLE>
                             See accompanying notes.


<PAGE>     5
                        AURORA BIOSCIENCES CORPORATION
                           STATEMENTS OF CASH FLOWS
                                 (UNAUDITED)
<TABLE>
<CAPTION>
 
                                                                     Nine Months Ended September 30,
                                                                          1998              1997
                                                                    --------------    --------------
<S>                                                                 <C>               <C>
OPERATING ACTIVITIES:   
Net loss                                                            $  (13,717,768)   $   (1,547,415)
Adjustments to reconcile net loss to net cash used in operating
  activities:   
    Depreciation and amortization                                        1,669,409           616,977
    Amortization of deferred compensation                                  613,703           572,493
    Changes in operating assets and liabilities:
      Accounts receivable under collaborative agreements                (1,351,452)       (1,499,171)
      Prepaid expenses and other current assets                           (720,191)       (3,130,170)
      Accounts payable and accrued compensation                          3,165,878           429,945
      Other current liabilities                                           (227,778)               -- 
      Unearned revenue                                                     599,332           177,501
      Other noncurrent liabilities                                           1,182                --
                                                                    --------------    --------------
Net cash used in operating activities                                   (9,967,685)       (4,379,840)
                                                                    
INVESTING ACTIVITIES:
Purchases of investment securities                                     (23,629,171)      (14,472,855)
Sales and maturities of investment securities                           26,205,000         7,470,381
Purchases of equipment, furniture and leaseholds                        (3,310,599)         (382,867)
Notes receivable from officers and employees                                30,000           (90,000)
Restricted cash                                                            231,639                --
Other assets                                                            (3,860,770)         (296,240)
                                                                    --------------    --------------
Net cash used in investing activities                                   (4,333,901)       (7,771,581)
   
FINANCING ACTIVITIES:
Cost of convertible preferred stock, net                                        --           (36,528)
Issuance of common stock, net                                              816,626        38,068,997
Principal payments on capital lease obligations                         (1,023,319)         (448,761)
                                                                    --------------    --------------
Net cash (used in) provided by financing activities                       (206,693)       37,583,708
                                                                    --------------    --------------
Net (decrease) increase in cash and cash equivalents                   (14,508,279)       25,432,287
   
Cash and cash equivalents at beginning of period                        23,168,690         3,914,038
                                                                    --------------    --------------
Cash and cash equivalents at end of period                          $    8,660,411    $   29,346,325
                                                                    ==============    ==============
  
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Interest paid                                                       $      481,443    $      236,374
                                                                    ==============    ==============
   
SUPPLEMENTAL SCHEDULE OF NONCASH INVESTING AND
  FINANCING ACTIVITIES:
Property and equipment acquired under capital leases                $    2,600,598    $    2,126,383
                                                                    ==============    ==============
</TABLE>
                             See accompanying notes.


<PAGE>      6
                        AURORA BIOSCIENCES CORPORATION

                         NOTES TO FINANCIAL STATEMENTS
                              SEPTEMBER 30, 1998      
                                 (UNAUDITED)

1. BASIS OF PRESENTATION

The accompanying unaudited financial statements of Aurora Biosciences 
Corporation ("Aurora" or the "Company") have been prepared in accordance with
generally accepted accounting principles for interim financial information and
with the instructions to Form 10-Q and Article 10 of Regulation S-X. 
Accordingly, they do not include all of the information and footnotes required
by generally accepted accounting principles for complete financial statements.
In the opinion of management, all adjustments, consisting of normal recurring 
adjustments, considered necessary for a fair presentation have been included.
Interim results are not necessarily indicative of results for a full year. 
These financial statements should be read in conjunction with the audited 
financial statements and footnotes thereto included in the Company's Annual 
Report on Form 10-K for the year ended December 31, 1997, as filed with the
Securities and Exchange Commission ("SEC").

2.	INCOME (LOSS) PER SHARE

Recent interpretations by the SEC have altered the treatment of convertible pre
ferred stock previously included in computing certain income (loss) per share 
data. For periods prior to the Company's initial public offering ("IPO") in 
June 1997, the Company previously considered convertible preferred stock, which
converted into common stock upon completion of the IPO, as outstanding from
the original date of issuance ("as-if converted method") in computing income
(loss) per share. To conform to the recent interpretations, the Company has
revised its calculation of income (loss) per share for all pre-IPO periods 
presented on the Statements of Operations to exclude the impact of convertible
preferred shares. For comparative purposes, the schedule below presents income
(loss) per share (basic and diluted) for the three and nine month periods
ended September 30, 1998 and 1997, under the as-if converted method.

<TABLE>
<CAPTION>
                                            Three Months Ended             Nine Months Ended
                                               September 30,                 September 30,
                                            1998           1997           1998           1997
                                        ------------   ------------   ------------   ------------
<S>                                     <C>            <C>            <C>            <C> 
Numerator:       
       
  Net income (loss)                     $ (3,501,052)  $    896,759   $(13,717,768)  $ (1,547,415)
                                        ------------   ------------   ------------   ------------
     
  Numerator - income available to
    common stockholders                 $ (3,501,052)  $    896,759   $(13,717,768)  $ (1,547,415)
                                        ============   ============   ============   ============
Denominator:       
       
  Weighted average common shares          16,417,747     15,597,573     16,219,425      6,684,138
       
  Adjustment to reflect the effect
    of assumed conversion of convertible 
    preferred stock to common stock 
    from the date of issuance                     --             --             --      6,138,459
</TABLE>       


<PAGE>     7
                       AURORA BIOSCIENCES CORPORATION

                        NOTES TO FINANCIAL STATEMENTS
                             SEPTEMBER 30, 1998      
                                (UNAUDITED)
<TABLE>
<CAPTION>
                                            Three Months Ended             Nine Months Ended
                                               September 30,                 September 30,
                                            1998           1997           1998           1997
                                        ------------   ------------   ------------   ------------
<S>                                     <C>            <C>            <C>            <C>  
  Effect of diluted securities:
    Nonvested common stock                        --      1,394,543             --             --
    Common stock options                          --        521,914             --             --
                                        ------------   ------------   ------------   ------------
      Dilutive securities subtotal                --      1,916,457             --             --
                                        ------------   ------------   ------------   ------------
       
Denominator - adjusted weighted
  average common shares                   16,417,747     17,514,030     16,219,425     12,822,597
                                        ============   ============   ============   ============
       
Basic net income (loss) per share
  under the as-if converted method      $      (0.21)  $       0.06   $      (0.85)  $      (0.12)
                                        ============   ============   ============   ============
       
Diluted net income (loss) per share
  under the as-if converted method      $      (0.21)  $       0.05   $      (0.85)  $      (0.12)
                                        ============   ============   ============   ============
</TABLE>
For the nine months ended September 30, 1997, the basic and diluted net loss 
per share without an adjustment for convertible preferred stock is $(0.23), 
computed using 6,684,138 weighted average common shares, as stated on the 
Statement of Operations.

3.	NEW ACCOUNTING STANDARDS

Effective January 1, 1998, the Company adopted the Financial Accounting 
Standards Board's Statement of Financial Accounting Standards No. 130, 
Reporting Comprehensive Income ("SFAS 130") and Statement of Financial 
Accounting Standards No. 131, Disclosures about Segments of an Enterprise and
Related Information ("SFAS 131"). SFAS 130 requires that all components of 
comprehensive income, including net income, be reported in the financial
statements in the period in which they are recognized. Comprehensive income
is defined as the change in equity during a period from transactions and other
events and circumstances from non-owner sources. Net income and other 
comprehensive income, including foreign currency translation adjustments, 
minimum pension accrual, and unrealized gains and losses on investments, shall
be reported, net of their related tax effect, to arrive at comprehensive 
income.  The adoption of SFAS 130 did not affect the results of operations or 
financial position because the Company's only component of comprehensive income
is unrealized gains and losses on investments, which is not significant. SFAS
131 establishes standards for the way that public business enterprises report 
information about operating segments in annual financial statements and 
requires that those enterprises report selected information about operating 
segments in interim financial reports. SFAS 131 also establishes standards 
for related disclosures about products and services, geographic areas and major
customers. The adoption of SFAS 131 did not affect the results of operations or
financial position, and did not affect the disclosure of segment information 
because the Company operates in only one operating segment.


<PAGE>     8

                        AURORA BIOSCIENCES CORPORATION
                              SEPTEMBER 30, 1998      

ITEM 2.	MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
		AND RESULTS OF OPERATIONS

This Form 10-Q contains certain statements of a forward-looking nature relating
to future events or the future financial performance of the Company. Such 
statements are only predictions and actual events or results may differ 
materially. Factors that could cause or contribute to such differences include,
without limitation, those discussed in this Item 2 as well as those discussed
in the Company's Annual Report on Form 10-K for the year ended December 31, 
1997 and Forms 10-Q for the quarters ended March 31, 1998 and June 30, 1998,
as filed with the Securities and Exchange Commission.

OVERVIEW

Aurora Biosciences Corporation ("Aurora" or the "Company") designs and 
develops proprietary drug discovery systems, services and technologies intended
to accelerate and enhance the discovery of new medicines. From May 8, 1995 
(inception) to December 31, 1995, the Company's operating activities related
primarily to recruitment of personnel and raising capital. Operating activities
since the beginning of 1996 have focused principally on the development of an 
integrated technology platform comprised of a portfolio of proprietary 
fluorescent assay technologies and an Ultra-high Throughput Screening System 
("UHTSS (Trademark)") designed to allow assay miniaturization and automation
with the potential to help change the paradigm of drug discovery.

The Company had an accumulated deficit of $16.8 million as of September 30,
1998. The $13.7 million net loss in the first nine months of 1998 primarily 
reflects the Company's substantial expenditures to accelerate the development 
and implementation of its UHTSS technology. The Company's ability to achieve 
profitability in the future will depend in part on its ability to successfully
develop and achieve acceptable performance specifications for the UHTSS, 
provide screen development and screening services to pharmaceutical and 
biotechnology companies and gain industry acceptance of its systems, services
and technologies. Payments from corporate collaborators and interest income are
expected to be the only sources of revenue for the foreseeable future. Royalties
or other revenue from commercial sales of products developed from any compounds
identified by using the Company's technologies are not expected for at least
several years, if at all. Payments under collaborative agreements and revenue
recognition thereof will be subject to significant fluctuation in both timing
and amount. Furthermore, the Company will continue to follow a strategy of
investing in new technologies to expand its technology platform as well as 
support existing technology alliances. Accordingly, the Company's results of 
operations for any period may not be comparable to the results of operations 
for any other period.

RESULTS OF OPERATIONS FOR THE THREE AND NINE MONTHS ENDED SEPTEMBER 30, 1998
AND 1997

Total revenue increased 128% from the three months ended September 30, 1997 to
the three months ended September 30, 1998 (the "three-month period") and
increased 140% from the nine months ended September 30, 1997 to the nine months
ended September 30, 1998 (the "nine-month period"). The increases in revenue
for the three-month and nine-month periods resulted primarily from the


<PAGE>     9

                        AURORA BIOSCIENCES CORPORATION
                              SEPTEMBER 30, 1998

Company's collaborative agreements with Warner-Lambert Company ("Warner-
Lambert") and Merck & Co., Inc. ("Merck"), which were executed in September 
1997 and December 1997, respectively. Under these collaborative agreements, 
screening systems, screening services and license fees revenue were recorded
in the three months and nine months ended September 30, 1998 while only
screening systems revenue was recorded in the three months and nine months
ended September 30, 1997. In addition, revenue from an agreement executed 
in August 1998 with Warner-Lambert to develop an automated master compound 
storage ("AMCS(Trademark)") system contributed to the increases in revenue 
for the three-month and nine-month periods. Screening systems, screening 
services and license fees revenue under the Company's collaborative agreements
with Bristol-Myers Squibb Pharmaceutical Research Institute ("BMS") and Eli
Lilly and Company ("Lilly") were recorded in the three months and nine months
ended September 30, 1998 and 1997.

Total operating expenses increased 254% for the three-month period and 234% 
for the nine-month period. The increases in operating expenses resulted 
primarily from the growth of the Company and its research and development 
programs. This growth is reflected by the increase to 144 employees at 
September 30, 1998 from 71 at September 30, 1997 and expansion of the
Company's facilities in October 1997 to 81,000 square feet from 22,000 
square feet.

Cost of screening systems increased 561% for the three-month period and 331%
for the nine-month period.  In addition to the factors noted above, the 
increases were attributable to increased purchases of materials and increased
technology development expenses related to the development of the UHTSS and
AMCS system for the Company's collaborators. Production costs for screening 
subsystems delivered to certain of the Company's collaborators in the quarter
ended September 30, 1998 also contributed to the increases.

Cost of screening services decreased 8% for the three-month period and 
increased 47% for the nine-month period. The slight decrease in the three-month
period is attributable to variations in the activity level of development
of screening assays for collaborators. In addition to the factors noted above,
the increase in the nine-month period resulted from development of screening
assays for Warner-Lambert and Merck under collaborative agreements executed
in the second half of 1997. 

Research and development expenses increased 214% for the three-month period
and 315% for the nine-month period. In addition to the factors noted above,
the increases were primarily due to ongoing development of Aurora's own UHTSS
and the expansion of the Company's human cell functional genomics program. In
addition, licensing of technology from OSI Pharmaceuticals, Inc. and 
Xenometrix, Inc. and the costs of initiating a collaboration with SIDDCO, 
Inc. to produce a large library of compounds for Aurora's UHTSS contributed
to the increases.

Selling, general and administrative expenses increased 126% for the three-month
period and 94% for the nine-month period with the overall expansion of the
Company's operations as noted above.


<PAGE>     10

                        AURORA BIOSCIENCES CORPORATION
                              SEPTEMBER 30, 1998

Net interest income decreased 32% for the three-month period and increased 73%
for the nine-month period. The decrease in the three-month period reflected 
decreased interest income from lower average cash and investment balances in 
the 1998 three-month period as the 1997 three-month period included proceeds 
from the Company's initial public offering in June 1997. The increase in the
nine-month period reflected increased interest income from higher average cash
and investment balances in the 1998 nine-month period, partially offset by 
increased interest expense incurred on capital lease obligations entered into 
during the last three months of 1997 and the first nine months of 1998.

LIQUIDITY AND CAPITAL RESOURCES

At September 30, 1998, Aurora held cash, cash equivalents and investment 
securities available-for-sale of $31.8 million and working capital of $29.2 
million. The Company has funded its operations through September 30, 1998 
primarily through the issuance of equity securities with aggregate net proceeds
of $57.6 million, receipts from corporate collaborations and strategic 
technology alliances of $33.5 million, capital equipment lease financing of 
$8.0 million and interest income of $4.3 million.

The Company's facility lease agreements are secured by letters of credit, which
are secured by certificates of deposit recorded as restricted cash. At 
September 30, 1998, such restricted cash totaled $1.1 million. The letters of 
credit will be released over the next three years on a predetermined schedule.

The Company has entered into certain contractual commitments, subject to 
satisfactory performance by third parties, which total approximately $6.0 
million over the next three years.

The Company expects significant cash expenditures to continue into 1999
as it continues its development of screening technology and seeks 
access to new technologies to expand its technology platform through 
investments, licensing agreements, research and development alliances or 
acquisitions.

To date, all revenue received by the Company has been from collaborations,
interest earned on cash and investment balances and technology alliances. 
The Company expects that substantially all revenue for the foreseeable future
will come from collaborators and interest income.

The Company's strategy for the development of the UHTSS includes the 
establishment of a syndicate of collaborators to provide the Company with 
funding for development, technology and personnel resources and payments for
system validation. The Company's UHTSS co-development syndicate currently 
includes BMS, Lilly, Warner-Lambert and Merck. In addition, the Company has
entered into collaborations with Roche Bioscience Corporation, Allelix
Biopharmaceuticals, Inc. and Cytovia, Inc. to provide screening services. 
The Company has also entered into an agreement with Warner-Lambert to develop
an AMCS system. Other collaborations include a combinatorial chemsistry
agreement with SIDDCO, Inc. for synthesis of chemical compounds.


<PAGE>     11

                        AURORA BIOSCIENCES CORPORATION
                              SEPTEMBER 30, 1998

The Company's ability to achieve sustained profitability will be dependent
upon its ability to enter into additional corporate collaborations. 
Although the Company is actively seeking to enter into additional
collaborations, there can be no assurance that the Company will be able 
to negotiate additional collaborative agreements on acceptable terms, if
at all. The Company's current collaborative agreements provide that the 
agreements generally may be terminated by the collaborator without cause
upon short notice, which would result in loss of anticipated revenue. Although 
the Company's collaborators would be required to pay certain penalties in the
event they terminate their agreements without cause, there can be no assurance
that any one or more of the Company's collaborators will not elect to terminate
their agreements with the Company. In addition, the amount and timing of 
resources that current and future collaborators, if any, devote to
collaborations with the Company are not within the control of the Company.
There can be no assurance that such collaborators will perform their 
obligations as expected, that the Company will derive any additional revenue
from such agreements or that such current or future collaborative agreements 
will be successful and provide the Company with expected benefits. Termination
of the Company's existing or future collaborative agreements, or the failure to
enter into a sufficient number of additional collaborative agreements on 
favorable terms, could have a material adverse effect on the Company's 
business, financial condition and results of operations.

The Company may be required to raise additional capital over a period of
several years in order to conduct or expand its operations or acquire new 
technology. Such capital may be raised through additional public or private
equity financings, borrowings and other available sources. No assurance can 
be given that the Company's business or operations will not change in a manner
that would consume available resources more rapidly than anticipated, or that 
substantial additional funding will not be required before the Company can 
achieve or sustain profitable operations. There can be no assurance that the
Company will continue to receive funding under its existing collaborative 
agreements or that the Company's existing or potential future agreements will
be adequate to fund the Company's operations.  If additional funding becomes
necessary, there can be no assurance that additional funds will be available
on favorable terms, if at all.  If adequate funds are not available, the
Company may be required to curtail operations significantly or to obtain funds
by entering into arrangements with others that may have a material adverse 
effect on the Company's business, financial condition and results of 
operations.

IMPACT OF YEAR 2000

The Company recognizes the need to ensure its operations will not be adversely
impacted by the inability of computer systems to process data having dates on 
or after January 1, 2000 (the "Year 2000" issue). The Company is completing an
assessment of whether it will have to modify or replace portions of its
software and certain hardware so that its systems will function properly with 
respect to dates in the year 2000 and thereafter. This assessment is
substantially complete and no significant modifications or conversions of 
existing software and certain hardware have been required to date. The 
assessment is expected to be completed no later than December 31, 1998 and all
required modifications and conversions of existing software and certain 


<PAGE>     12

                        AURORA BIOSCIENCES CORPORATION
                              SEPTEMBER 30, 1998

hardware are expected to be completed by March 31, 1999, which is prior to any
anticipated impact on the Company's systems. The Company believes that, with 
modifications and conversions of existing software and certain hardware, the 
Year 2000 issue will not pose significant operational problems for its systems.
However, if such modifications and conversions are not made, or are not 
completed timely, the Year 2000 issue could have a material impact on the
operations of the Company.

The Company has gathered information about its significant suppliers, financial
institutions and others with whom the Company does business to determine the 
extent to which the Company's systems are vulnerable to those third parties' 
failure to remediate their own Year 2000 issues. The Company continues to 
monitor the Year 2000 compliance status of such third parties and no
significant issues with third parties' systems have been identified to date.
While the Company has no material systems that interface directly with those 
of third parties, there can be no assurance that the systems of third parties
will not have a material impact on the operations of the Company.

The Company does not expect purchases of new or upgraded software and hardware
required for Year 2000 compliance to be significant. In addition, the Company
does not expect to utilize significant external resources to assess, test,
modify or replace existing software and hardware for Year 2000 issues. 
Accordingly, the total Year 2000 issue cost to the Company is not expected 
to be material.

The costs of the project and the date on which the Company believes it will
complete the modifications necessary to resolve the Year 2000 Issue are based
on management's best estimates, which were derived utilizing numerous 
assumptions of future events, including the continued availability of certain
resources and other factors.  However, there can be no assurance that these 
estimates will be achieved and actual results could differ materially from 
those anticipated.  Specific factors that might cause such material differences
include, but are not limited to, the availability and cost of personnel trained
in this area, the ability to locate and correct all relevant computer codes,
and similar uncertainties.

The Company currently has no contingency plans in place in the event it does not
complete all phases of the Year 2000 program.  The Company plans to evaluate the
status of completion in March 1999 and determine whether such plans are 
necessary.

<PAGE>     13
                        
                        AURORA BIOSCIENCES CORPORATION
                              SEPTEMBER 30, 1998

                         PART II - OTHER INFORMATION

ITEM 2.  CHANGES IN SECURITIES AND USE OF PROCEEDS

(d) Net offering proceeds to the Company from its initial public offering in
June 1997 and partial exercise of an over-allotment option granted to the
underwriters totaled $37.7 million. Through September 30, 1998, approximately
$21.0 million was used for general corporate purposes, approximately $11.9 
million was used for enhancement of internal research and development 
capabilities and the acquisition of chemical libraries and approximately $4.8
million was used for facilities expansion and improvements. No payments were
made to directors, officers or affiliates of the Company or 10% owners of any
class of equity securities of the Company, other than compensation payments 
to directors and officers of the Company. As of September 30, 1998, the total
net offering proceeds of $37.7 million have been used.

ITEM 6.  EXHIBITS AND REPORTS ON FORM 8-K

(a)   Exhibits:

      10.36(1)    Agreement dated July 16, 1998 between the Registrant and 
                  Deborah J. Tower.
      10.37*      Collaborative Research Agreement dated July 16, 1998 between
                  the Registrant and Cytovia, Inc.
      10.38*      AMCS Development Agreement dated August 21, 1998 between the
                  Registrant and Warner-Lambert Company.
      27.1        Financial Data Schedule related to the Financial Statements
                  for the period ended September 30, 1998.
- --------------
     (1)          Previously filed as exhibit of the same number with the
                  Registrant's Form 10-Q for the quarter ended June 30, 1998
                  (No. 0-22669) and incorporated herein by reference.

      *           The Company has requested confidential treatment with respect
                  to certain portions of this exhibit. Omitted portions have
                  been filed separately with the Securities and Exchange 
                  Commission.

(b)   Reports on Form 8-K:

                  No reports on Form 8-K were filed during the quarter ended
                  September 30, 1998


<PAGE>     14    

                        AURORA BIOSCIENCES CORPORATION
                              SEPTEMBER 30, 1998
 

                                  SIGNATURE



Pursuant to the requirements of the Securities and Exchange Act of 1934, the
registrant has duly caused this report to be signed in its behalf by the
undersigned thereunto duly authorized.

 
                                              Aurora Biosciences Corporation




Date: NOVEMBER 13, 1998                       By:  /s/ JOHN PASHKOWSKY
                                              ------------------------------
                                              John Pashkowsky
                                              Director of Finance and Treasurer
                                              (On behalf of the Registrant and 
                                              as Registrant's Principal 
                                              Financial and Accounting Officer)




<PAGE>     1                                                      EXHIBIT 10.37

CONFIDENTIAL TREATMENT REQUESTED UNDER 17 C.F.R. SECTIONS 200.80(B)(4),200.83
AND 240.24B-2.  "***" INDICATES OMITTED MATERIAL THAT IS THE SUBJECT OF A
CONFIDENTIAL TREATMENT REQUEST THAT HAS BEEN FILED SEPARATELY WITH THE SECRETARY
OF THE COMMISSION.





                           COLLABORATION AGREEMENT


                                   BETWEEN


                                CYTOVIA, INC.

                                     AND

                        AURORA BIOSCIENCES CORPORATION



***Confidential Information Requested  1


<PAGE>     2

                             COLLABORATION AGREEMENT


This COLLABORATION AGREEMENT (the "Agreement"), is entered into as of the
Effective Date (defined below), by and between Aurora Biosciences Corporation,
a Delaware corporation, having a principal place of business at 11010 Torreyana
Road, San Diego, California 92121 ("Aurora"), and Cytovia, Inc., having a 
principal place of business at 201 Technology Drive, Irvine CA 92616 
"Cytovia").

                                  BACKGROUND

WHEREAS, Aurora designs, develops, and manufactures automation, instruments and
fluorescent assay technologies which it may use for accelerated drug discovery;

WHEREAS, Cytovia develops cellular assays using its proprietary fluorogenic 
substrates for the discovery of drugs to be developed by Cytovia,

WHEREAS, Aurora and Cytovia desire to enter into a collaborative research and 
development program to develop screens and use such screens to identify 
compounds having biological activity; all in accordance with the terms and 
conditions set forth below.

NOW, THEREFORE, Aurora and Cytovia agree as follows:


ARTICLE 1.  DEFINITIONS

The following terms shall have the meanings provided below when used herein:

     1.1  "Affiliate" shall mean a person or entity, other than an entity 
     jointly owned or controlled by the parties, that directly or indirectly 
     controls, is controlled by, or is under common control with the person or 
     entity specified.  For purposes of this definition, "control" means the 
     direct or indirect ownership of greater than fifty percent (50%) of the 
     outstanding shares or other voting rights of the specified entity to elect
     directors or other management authority, or if not meeting the preceding, 
     that level of control which is the maximum ownership right permitted in 
     the jurisdiction where such entity exists.

     1.2  "Agency" shall mean the U.S. Food and Drug Administration ("FDA") or
     its successor, or an equivalent agency of any other government of another 
     country having jurisdiction over the development, manufacturing, and/or 
     marketing of pharmaceutical products.

     1.3  "Agreement Compound" shall mean ***. 



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<PAGE>     3

     1.4  "Annual Screening Program" shall have the meaning set forth in 
     Section 2.4.2.
	
     1.5  "Aurora Compound" shall mean ***

     1.6  "Aurora Know-How" shall mean ***.

     1.7  "Aurora Patents" shall mean Patent Rights owned, licensed or 
     Controlled by Aurora  (including its Affiliates, Licensors or its 
     Licensees) which relate to Compounds, Agreement Compounds, Products or
     Screens ***.

     1.8  "Aurora Technology" shall mean Aurora Patents and Aurora Know-How.

     1.9  "Collaboration Committee" or "CC" shall have the meaning set forth 
     in Section 2.1.

     1.10 "Collaboration Period" shall begin on the Effective Date and ***.

     1.11 "Compound" shall mean ***. 

     1.12 "Compound Library and Database Program"  or ("CLDP") and ***is 
     defined in Exhibit B. 

     1.13 "Confidential Information" shall mean information or material 
     disclosed hereunder by one party (the "Disclosing Party") to the other 
     party (the "Receiving Party") and as further defined in Section 9.1.

     1.14 "Control" or "Controlled" shall mean, with respect to Intellectual 
     Property, possession by a party or its Affiliates of the ability to grant 
     a license or sublicense in accordance with the terms of this Agreement, 
     and without violating the terms of any agreement by such party with a 
     Third Party.

     1.15 "CPI" shall mean the Consumer Price Index, All Urban Consumers, as 
     published by the U.S. Bureau of Labor Statistics.



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<PAGE>     4

      1.16 "Cytovia Collaborator" shall mean ***.  

      1.17 "Cytovia Compound" shall mean ***. 

      1.18 "Cytovia Know-How" shall mean ***.

      1.19 "Cytovia Patent Rights" shall mean Patent Rights owned, licensed or 
      Controlled by Cytovia (including its Affiliates, Licensors or its 
      Licensees)***.

      1.20 "Cytovia Technology" shall mean ***.


      1.21 "***



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<PAGE>    5

     1.22 "Development Candidate" shall mean a ***.
 
     1.23 "Excluded Compound" shall mean ***. 

     1.24 "Full Time Equivalent" or "FTE" shall mean the full time equivalent 
     of one (1) Aurora researcher, based on a minimum of one thousand seven 
     hundred sixty (1,760) hours per year.

     1.25 "Hit" shall ***.

     1.26 "Intellectual Property" means any a) information or data, 
     techniques, methods, trade secrets, results, tangible or intangible know-
     how, or chemical, biological or physical materials that is not generally 
     known to the public, b) world-wide copyrights, and c) patent rights.

     1.27 "Joint Technology" shall have the meaning set forth in Section 8.3.

     1.28 "Licensee" shall mean any Third Party (other than an Affiliate of 
     Cytovia or Aurora) which is granted a license, sublicense or other right 
     to manufacture, use, sell, offer for sale, distribute and/or import one or
     more Products or Agreement Compounds.

     1.29 "Licensor" shall mean any Third Party that grants a license,
     sublicense or other right to manufacture, use, sell, offer for sale, 
     distribute and/or import one or more Products or Compounds.

     1.30 "NDA" shall mean a New Drug Application ("NDA"), Biologics License 
     Application ("BLA") or Product License Application ("PLA"), as defined in 
     the U.S. Food, Drug, and Cosmetic Act and the regulations promulgated 
     thereunder, or any equivalent foreign application.



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<PAGE>     6

     1.31 "Net Royalty" shall mean all consideration, including without 
     limitation, ***, received by Cytovia, from an Affiliate, a Third Party, 
     Cytovia Collaborator, or Licensee in respect of the sale or other 
     distribution of any Product. Net Royalty excludes milestone payments or 
     any amounts received by Cytovia which do not accrue upon the sale or
     distribution of any Product, such as a loan, purchase of equity, or 
     support for research and development activity for such Product.

     1.32 "Net Sales" shall mean the invoice price of Products, as the case
     may be, sold by Cytovia or its Affiliates, Cytovia Collaborators, or 
     Licensees to bona fide independent Third Parties in arm's length 
     transactions, less, to the extent included in such invoice price the total 
     of: (i) ordinary and customary trade discounts actually allowed; (ii) 
     credits, rebates and returns(including, but not limited to, wholesaler and 
     retailer returns); (iii) freight, postage and duties paid for and 
     separately identified on the invoice or other documentation maintained in 
     the ordinary course of business, and (iv) excise taxes, other consumption 
     taxes, customs duties and compulsory payments to governmental authorities 
     actually paid and separately identified on the invoice or other
     documentation maintained in the ordinary course of business.  Net Sales
     shall also include the amount or fair market value of all other 
     consideration received by Cytovia or its Affiliates, Cytovia 
     Collaborators, or Licensees which accrues upon the sale or other 
     distribution of Products, as the case may be, whether such consideration 
     is in cash, payment in kind, exchange or another form.

     1.33 "Non-exclusive Compounds" means a single set of ***by Aurora
     during the Collaboration Period wherein each compound in such set ***.

     1.34 "Patent Rights" shall mean all U.S. or foreign jurisdiction    
     (including the European Patent Convention) patent applications, including 
     any regular, or provisional applications and any continuation (in whole or
     in part), division, or substitute thereof, and any patent issuing thereon,
     including any reissue, re-examination, or extension thereof or any 
     equivalent of any of the foregoing.

     1.35 "Phase I," "Phase II," and "Phase III" shall mean Phase I, Phase II, 
     or Phase III human clinical trials of a pharmaceutical product, 
     respectively, in each case as customarily related to applicable FDA 
     Investigational New Drug ("IND") regulations, or any equivalent or
     corresponding foreign statutes, rules, or regulations.

     1.36 "Product" shall mean ***.

     1.37 "Screen" shall mean an ***.



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<PAGE>     7

     1.38 ***

     1.39 ***

     1.40 "Term" shall have the meaning set forth in Section 12.1.

     1.41 "Third Party" shall mean any person or entity other than (i) Aurora 
     and any of its Affiliates, and (ii) Cytovia and any of its Affiliates.
 
     1.42 "Tracking Records" shall have the meaning set forth in Section 
     5.2.5.

     1.43 "Valid Claim" shall mean (a) an issued claim under an issued patent 
     within the Patent Rights, which has not (i) expired or been canceled, (ii) 
     been declared invalid by an unreversed and unappealable decision of a 
     court or other appropriate body of competent jurisdiction, (iii) been 
     admitted to be invalid or unenforceable through reissue, disclaimer or 
     otherwise, and/or (iv) been abandoned; or (b) a claim included in a 
     pending patent application within the Patent Rights that is being actively
     prosecuted in accordance with this Agreement and which has not been (i) 
     canceled, (ii) withdrawn from consideration, (iii) finally determined to 
     be unallowable by the applicable governmental authority for whatever 
     reason (and from which no appeal is or can be taken), and/or (iv)
     abandoned.

     1.44 ***




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<PAGE>     8

ARTICLE 2.  SCREENING PROGRAM
 
2.1 Collaboration Committee.

     2.1.1 Responsibilities. Within thirty (30) days after the Effective
     Date, Aurora and Cytovia shall establish a committee (the "Collaboration 
     Committee" or "CC"), to review and coordinate the Screening Programs 
     pursuant to Article 2.

     2.1.2 Membership.  The CC shall be comprised of ***from Cytovia and *** 
     from Aurora.  Each party may select and replace its CC representatives at 
     any time, with written notice to the other party.  Each party shall each 
     appoint one of its CC representatives to be responsible for coordinating 
     communications between the parties.

     2.1.3 Meetings.  During the Collaboration Period, the CC shall meet at 
     least quarterly, or more often as mutually agreed, in person, by telephone
     or televideo conference.  Each party shall pay its own expenses incurred 
     in connection with participation at CC meetings.  With the consent of the 
     parties, other representatives of Cytovia and/or Aurora may attend CC
     meetings as nonvoting observers.  On an alternating basis, one party shall
     promptly prepare and deliver to the members of the CC minutes in respect 
     thereof, for review and approval by both parties.

     2.1.4 CC Decisions.  Decisions of the CC shall be made by simple 
     majority approval of all CC members.  In the event that approval is not 
     obtained within the CC, the undecided matter will be referred to a 
     Business Development officer of each party, who shall promptly meet in 
     person or by telephone or by televideo conference to endeavor to resolve
     the dispute.  In the event such individuals are unable to resolve such
     dispute within thirty (30) days, the matter shall be referred to the Chief
     Executive Officers or equivalent of the parties, who shall promptly meet 
     in person or by televideo conference within thirty (30) days after such
     dispute is submitted to such officer, to endeavor to resolve the dispute.
     If such officers are unable to resolve the dispute in a timely manner, at 
     the request of either party, it shall be settled by binding arbitration
     pursuant to Section 13.2 below, or as otherwise mutually agreed in writing.

2.2 Screen Proposals and Selection. During ***the Collaboration Period, ***,
as defined Section 2.4. ***, Cytovia will ***identified by Cytovia relating to 
such Screen. In performing its obligations under the foregoing sentence***. 
Within thirty (30) days of receiving such information, and further information 
as Aurora may reasonably request regarding a proposed Screen, (i) the CC will 
meet to review whether the CC reasonably believes that it is ***feasible to use 




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<PAGE>     9

the Screen in an Annual Screening Program and (ii) Aurora shall notify Cytovia 
in writing whether Aurora reasonably believes that Aurora is ***feasible to 
work with such Screen. Aurora may determine that performing a Screen may not be
legally feasible for *** Aurora being subject to conflicting obligations under 
this Agreement and another then existing agreement with a Third Party. If the 
CC determines that it is feasible to use a Screen developed by Cytovia, ***, 
the CC will develop a written plan for such Screen ("Screen Work Plan")
containing a complete description of the Screen, delivery schedule, screening 
plan, and the screening schedule. If the CC does not determine that it is 
feasible to use the Screen, it shall notify Cytovia in writing thereof, and in 
such case Aurora shall have no obligation to use such Screen.  

2.3 Screen Delivery and Cytovia ***. Promptly after development of a 
Screen Work Plan, Cytovia will deliver to Aurora such Screen as set forth in 
the appropriate Screen Work Plan.   Such Screen will be delivered with a 
written summary describing the Screen and data indicating that such Screen
satisfies the Screen Specifications and the applicable provisions of the Screen
Work Plan.

2.4 Screening Services and Aurora ***

     2.4.1 ***

     2.4.2 ***

     2.4.3 ***

     2.4.4 CLDP Selection and Upgrade. At least thirty (30) days prior to 
     commencement of the Annual Screening Program, Cytovia shall notify Aurora
     in writing of the CLDP Cytovia has selected for use in the Annual 
     Screening Program for a particular Screen. Following commencement of the 
     Annual Screening Program, the CLDP for the Annual Screening Program may be
     upgraded as follows. 

          (i) ***

          (ii) ***





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<PAGE>     10

     Requests for such CLDP upgrades shall be submitted in writing by Cytovia 
     to Aurora. With respect to the payments in Section 5.2.1, the terms and
     conditions for the highest CLDP level selected for an Annual Screening 
     Program shall apply to all Aurora Compounds used in such Annual Screening
     Program. 

     2.4.5 Screening Program Reports. During the course of the Annual 
     Screening Program, individuals from Cytovia and Aurora, appointed by the
     CC, will discuss and review monthly, if not more frequently, the progress
     and any issues relating to the Annual Screening Program. During the
     Collaboration Period, the CC will review and prepare quarterly reports for
     the Annual Screening Program in progress at that time.  Each progress 
     report shall provide a written update of work performed, any Hits 
     identified, and all available supporting data.

     2.4.6 Screening Database Access and Maintenance. For a period of 
     ***following completion of each Annual Screening Program, Aurora will 
     maintain all data generated in such Annual Screening Program and Cytovia 
     may have access to such data subject to the terms of the CLDP selected for
     such Annual Screening Program. All data provided by Aurora to Cytovia will
     be transferred electronically. 

     2.4.7 Optional Screening Services. During the Collaboration Period,
     Cytovia may purchase from Aurora optional screening services to provide 
     (i) additional data points from the Screen used in the Annual Screening
     Program, (ii) screening services for additional screens, or (iii) 
     development services beyond those included in the Annual Screening 
     Program. The fees for such optional screening services will be negotiated 
     in good faith by the parties. 

     2.4.8 Credit for Unused Screening Services. If during the course of an 
     Annual Screening Program, Cytovia elects to end the screening process
     before ***.   Unless mutually agreed to in writing by the parties, ***.

     2.4.9 Exclusion of Aurora Compounds.	The use of an Aurora Compound 
     and data associated with such Aurora Compound may ***. 



***Confidential Treatment Requested    10


<PAGE>     11

     2.4.10 Designation of Excluded Compounds.  At least ***days prior to 
     commencement of each Annual Screening Program, Cytovia ***

2.5 Payments for Screening Services.

     2.5.1 Funding for Annual Screening Program.  In consideration for the ***.
     The first payment shall be made within ***of the Effective Date, and 
     subsequent payments shall be paid to Aurora no later than the first day of
     the second month of the calendar quarter to which such payment pertains. 
     Cytovia will have responsibility for paying for any associated sales, use,
     value added, or transfer tax, or similar governmental charge if any, but 
     not taxes based on net income or profit.

     2.5.2 Funding for Additional Screens.  If Aurora determines, in good 
     faith, that the expenses that would be incurred by Aurora ***for an Annual
     Screening Program, ***, and in such event the parties shall in good faith 
     determine the *** for the applicable screening and development activities.
     *** shall be calculated based on the number of additional FTEs required to
     complete the Annual Screening Program, and the duration of the additional
     FTEs' participation in such activities.  The fully burdened FTE rate for
     each Aurora scientist shall be ***per FTE per year.  Such amount shall be
     ***. In addition, Aurora reserves the right ***.




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<PAGE>     12

ARTICLE 3.  DEVELOPMENT AND COMMERCIALIZATION

The selection of Agreement Compound(s), Development Candidate(s), and 
Product(s) for development and commercialization will be at the discretion of 
Cytovia.  Cytovia will, at no expense to Aurora, be responsible for conducting 
or arranging all development and commercialization of such selected Agreement 
Compound(s) Development Candidate(s) and Product(s)that Cytovia, at its 
discretion, chooses to develop and commercialize. Cytovia, its Affiliates, 
Cytovia Collaborators or Licensees will ***, or have its Affiliates, Cytovia 
Collaborators or its Licensees *** meet the market demand therefor.  Cytovia 
will promptly notify Aurora at such time as any Agreement Compound becomes a 
Development Candidate, or otherwise achieves any milestone for which Cytovia 
will owe Aurora a milestone payment pursuant to Section 5.1. Cytovia agrees to 
provide Aurora with a written summary of the development progress made in 
respect of an Agreement Compound(s), Development Candidate(s), and Product(s) 
within thirty (30) days of the end of each calendar quarter during the period 
in which an Agreement Compound(s), Development Candidate(s), and Product(s) is 
under development by Cytovia (or its designee). 


ARTICLE 4.  LICENSES

4.1 License to Aurora.  Cytovia hereby grants to Aurora, ***.

4.2 No Implied Licenses and Grant Backs. Only those licenses expressly granted
in Section 4.1 and Article 8 shall be of any force and effect.  No license or 
other right in the Aurora Technology or Cytovia Technology shall be created 
hereunder by implication, estoppel, or otherwise.   


ARTICLE 5.  MILESTONES AND ROYALTIES

5.1 Milestone Payments.	Cytovia will pay to Aurora the following amounts 
upon achievement of each of the following milestone events by Cytovia, 
***Screen to have ***.



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<PAGE>     13

     Milestone Events Per Screen:                         Payment

     ***                                                  ***

     Milestone Events Per Compound:

     ***                                                  ***
     ***                                                  ***
     ***                                                  ***
     ***                                                  ***


Cytovia will notify Aurora in writing and pay Aurora the appropriate amounts 
set forth in this Section 5.1, within ***of the achievement of a milestone, or,
in the case of a Third Party achieving a milestone, within the earlier of a) 
***of Cytovia receiving notification from a Third Party of the achievement of a
milestone set forth in this Section 5.1 or b) ***of Cytovia receiving payment 
from a Third Party for the achievement of such milestone. If in the course of 
compound development any of the above milestones are combined or skipped, 
Aurora will receive the above milestone payments as if each milestone were 
initiated separately or completed separately. 

5.2 Royalties to Aurora. ***, Cytovia shall pay Aurora a royalty ***. Sales of 
any products that contain Excluded Compounds and do not contain any Products 
shall ***. 

     5.2.1 Sales of Products derived from Aurora Compounds.  With respect to 
     Product(s) containing Aurora Compounds or Derivatives thereof pursuant to 
     the Compound Library Database Program selected in accordance with Section
     2.4.3, Cytovia shall pay Aurora an amount equal to 

          (i) ***,

          (ii) ***, and

          (iii) ***.



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<PAGE>     14

     5.2.2. Sales of Products ***. With respect to Product(s) ***Compounds or 
     Derivatives thereof, Cytovia shall pay Aurora an amount equal to ***of 
     such Products if the Product is marketed by ***if the Product is marketed
     by an ***; provided, however, that such amount payable to Aurora pursuant
     to this Section 5.2.2 shall not be less *** of such Product(s).

     5.2.3 Trade Secret Royalty.  The parties acknowledge that the principal 
     value contributed by Aurora under this Agreement is the enhanced 
     probability of identifying leads for human pharmaceutical products (or 
     other products having commercial value) and the potential to generate 
     multiple leads, either or both of which the parties reasonably believe 
     will lessen the time required to bring pharmaceutical products to market
     and increase the efficiency of drug discovery and development processes 
     and technologies.  Additionally, the parties acknowledge that Aurora may
     not own or control Patent Rights covering the manufacture, sale, use, or
     importation of a particular Agreement Compound or Product.  Cytovia 
     acknowledges and agrees that the value it receives hereunder is primarily
     in the access and use of the Aurora Compounds and the Aurora Technology.
     Accordingly, Cytovia agrees to pay those royalties and other amounts at 
     the applicable rate specified in this Section 5.2, regardless of whether
     a Product is covered by Patent Rights within the Aurora Technology.

     5.2.4 Royalty Term.  Cytovia's obligation to pay royalties to Aurora 
     pursuant to this Section 5.2 shall continue on a Product-by-Product and 
     country-by-country basis until *** after the date of the first commercial
     sale of such Product in a particular country by Cytovia, its Affiliates, 
     designees, Cytovia Collaborators or Licensees. 

     5.2.5 Tracking Records for Royalty Obligations. Records of any Hits or any 
     Compound subject to additional screening will be stored by Cytovia in a 
     computer searchable file or database that may be separate from other 
     Cytovia data not related to Screens.  Such records or information from a 
     Screen will be recorded and stored by Cytovia using its customary means 
     and in a computer searchable database on a storage device. The information 
     stored will include ***tested, and date of testing. Upon written request 
     by Aurora, Cytovia will create an annual written report of Hits or
     Derivatives subjected to additional screening, in vivo testing, computer 
     modeling, medicinal chemistry or an Investigational New Drug application 
     or foreign equivalent to date to be accessible by an independent 
     consultant of Aurora.  All the records described in this Section 5.2.5 are
     collectively referred to as tracking records (the "Tracking Records"). 
     Cytovia will permit a Third Party appointed by Aurora and Cytovia, and 
     subject to a confidential relationship with Cytovia, to inspect the 
     Tracking Records once per year or upon reasonable request for the sole 
     purpose of determining the attainment of a milestone or royalty under this
     Agreement.  The Tracking Records shall be securely retained for no less
     than ***from the last use of a Screen. When a compound, such as a Hit or 
     Derivative is selected for ***, Cytovia will disclose this compound to 
     Aurora and such information shall be Cytovia's Confidential Information 
     for the purpose of Article 9.  In addition, Cytovia will make reasonable 



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<PAGE>     15

     efforts to obligate its Affiliates, designees, Cytovia Collaborators or 
     Licensees to a provision substantially the same as this provision in this 
     Section 5.2.5 with respect to Cytovia and wherein such party will grant 
     access to Aurora in event Cytovia is unable to access such Tracking 
     Records.  Upon reasonable request by Aurora and at a minimum once per year,
     Cytovia will provide Aurora with a summary of the status of Agreement 
     Compounds and Products that may be used to calculate royalties or 
     milestones.

     5.2.6 Payment of Royalties. Cytovia will notify Aurora in writing and pay 
     Aurora the appropriate amounts set forth in this Section 5.2,  (a) within 
     ***of receipt of ***by Cytovia, (b) within ***of Cytovia receiving 
     royalties from a Third Party for the of receipt of ***, or (c) if Cytovia 
     is not due any royalties, within ***of Cytovia receiving notification from
     a Third Party of the receipt of ***. 

5.3 Payment of Milestones and Royalties in the Event of Bankruptcy.  Cytovia
shall contractually obligate its Affiliates, designees, Cytovia Collaborators 
or Licensees so that in the event of bankruptcy by Cytovia such parties will 
either a) pay milestones directly to Aurora pursuant to Section 5.1 and pay 
royalties directly to Aurora pursuant to Section 5.2 or b) terminate all rights
and activities under any agreement relating to the development and 
commercialization of Agreement Compounds or Products as permitted under this 
Agreement.

5.4 Exemptions from Milestones and Royalties.  Notwithstanding any other 
provision of this Agreement, Cytovia shall not be obligated to make any 
milestone payment or royalty payment with respect to products ***. 


ARTICLE 6.	INVESTMENT AND SCREENING REFERRALS

6.1 Aurora Contribution. Within ***of the Effective Date, Aurora will ***. 

6.2 Screening Referrals. For a period of ***following the Effective Date, 
Cytovia will grant Aurora a ***




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<PAGE>     16

ARTICLE 7.  PAYMENTS; BOOKS AND RECORDS

7.1 Royalty Reports.  After the first commercial sale of a Product on which
royalties are payable hereunder to Aurora by Cytovia, Cytovia shall make 
quarterly written reports to Aurora within *** after the end of each calendar
quarter or ***from the receipt of such information from a Third Party, stating 
in each such report, on a country-by-country basis, the number, description, 
and *** of each Product sold in a country during the calendar quarter upon 
which a royalty is payable under Section 5.2 above.

7.2 Screen Development and Screening Payments.  Any payments due pursuant to 
Section 2.5 shall be paid within thirty (30) days of receipt of an invoice 
therefor. Any payments due pursuant to Section 5.1 shall be paid as provided in
that Section 5.1. Any payments due pursuant to Section 5.2 shall be paid as 
provided in that Section 5.2.

7.3 Payment Method.	All payments due under this Agreement shall be made by 
bank wire transfer when due in immediately available funds to an account 
designated by Aurora.  Any payments that are not paid on the date such payments
are due under this Agreement shall bear interest to the extent permitted by 
applicable law at the lesser of the prime rate as reported by the ***, on the 
date such payment is due, plus an additional *** per annum, or the maximum rate
allowed by law, calculated on the number of days such payment is delinquent.

7.4 Currency Conversion.  All payments outlined in this Agreement are in U.S. 
Dollars.  If any currency conversion shall be required in connection with the 
calculation of royalties or any other payments hereunder, such conversion shall
be made using the selling exchange rate for conversion of the foreign currency 
into U.S. Dollars, quoted for current transactions as reported in The Wall 
Street Journal for the last reported day of the calendar quarter to which such 
payment pertains.

7.5 Records; Inspection.  Cytovia and its Affiliates shall keep complete, 
true, and accurate books of account and records for the purpose of determining 
the royalty amounts payable under this Agreement.  Such books and records shall
be kept at the principal place of business of such party for at least 
***following the end of the calendar quarter to which they pertain.  Such 
records will be open for inspection during such ***period by an accounting firm
appointed by Aurora that is reasonably acceptable to Cytovia or its Affiliates.
Such inspections may be made no more than once each calendar year, at 
reasonable times and on reasonable notice.  Inspections conducted under this 
Section 7.5 shall be at the expense of Aurora, unless a variation or error



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<PAGE>     17

producing an increase exceeding ***of the amount stated for any period covered 
by the inspection is established in the course of any such inspection, 
whereupon all costs relating to the inspection for such period and any unpaid
amounts that are discovered will be paid promptly by Cytovia, together with 
interest thereon from the date such payments were due at the lesser of the 
prime rate as reported by the ***, plus an additional ***per annum, or the 
maximum allowed by law.

7.6 Tax Matters.  All royalty amounts required to be paid to Aurora pursuant
to this Agreement shall be paid without deduction for withholding for or on 
account of any taxes, including any sales, use, value added, or transfer tax, 
or similar governmental charge imposed by a jurisdiction other than the United 
States but exclusive of taxes based on net income or profits.  Payment of any 
such tax or similar governmental charge, including any due in connection with 
the transfer of the Screens hereunder, shall be the sole responsibility of 
Cytovia.  In the event that Aurora is required to pay any such tax or other 
similar charge, Cytovia shall promptly reimburse Aurora for payment of such 
amounts.


ARTICLE 8.  INTELLECTUAL PROPERTY

8.1 Cytovia Sole Ownership.	 Cytovia shall be the sole owner of any 
Intellectual Property conceived and reduced to practice or otherwise developed
solely by its employees, consultants and agents, and all patent applications 
and patents claiming such Intellectual Property; provided, however, that
Intellectual Property that covers *** will be assigned by Cytovia to Aurora***

8.2 Aurora Sole Ownership.  Aurora shall be the sole owner of any Intellectual
Property conceived and reduced to practice or otherwise developed solely by its 
employees, consultants and agents and all patent applications and patents 
claiming such Intellectual Property; provided, however, that Intellectual 
Property that ***



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<PAGE>     18

8.3 Joint Technology.  

            8.3.1 Joint Ownership. If, during the Collaboration Period, one or 
            more employees or consultants of Aurora, together with one or more 
            employees or consultants of Cytovia, jointly conceive or reduce to 
            practice any Intellectual Property, (the "Joint Technology"), each 
            of the parties shall ***the Joint Technology, except as set forth 
            herein. 

            8.3.2 Joint Technology Assigned to Aurora. Cytovia will assign to 
            Aurora Cytovia's interest in all Joint Technology *** provided, 
            however, that Cytovia shall retain thereto a non-exclusive, 
            worldwide, royalty-free license, without the right to grant 
            sublicenses, to such Intellectual Property ***. 

            8.3.3 Joint Technology Assigned to Cytovia. Aurora will assign to 
            Cytovia Aurora's interest in all Joint Technology ***; provided, 
            however, that Aurora shall retain thereto a non-exclusive, 
            worldwide, royalty-free license, without the right to grant 
            sublicenses, to such Intellectual Property ***. 

8.4 Additional Licenses.  The parties recognize and agree, that (i) in some 
instances the practice of Joint Technology licensed in either Section 8.3.2 or 
8.3.3, may require additional license(s) under Aurora Technology or Cytovia 
Technology, respectively, such as for Technology that was developed outside the
scope of this Agreement; and (ii) in some instances that the practice of non-
exclusively licensed Technology in Sections 8.1 and 8.2 may require additional
license(s) under Aurora Technology or Cytovia Technology, respectively, such as
for Technology that was developed outside the scope of this Agreement. 

8.5 U.S. Law.  Inventorship and rights of ownership with respect to Aurora 
Technology, Cytovia Technology, and Joint Technology shall be determined in 
accordance with the intellectual property and patent laws of the United States.

8.6 Retained Rights.  Except as otherwise expressly provided in this 
Agreement, nothing in this Agreement is intended to convey or transfer 
ownership by one party to the other of any rights, title or interest in any 
Confidential Information, technology or Patents Rights owned or Controlled by 
a party.  Except as expressly provided for in this Agreement, nothing in this 
Agreement shall be construed as a license or sublicense by one party to the 
other of any rights in any technology or Patent Rights owned or Controlled by 
a party or its Affiliates.



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<PAGE>     19

8.7 Patent Filing and Prosecution.

     8.7.1 Cooperation. Cytovia and Aurora shall cooperate with each other on 
     all matters relating to the filing, prosecution, and maintenance of patent
     applications and patents specifically related to this Agreement that are 
     included within Joint Technology that is jointly owned.  Each party shall 
     have the right but not the obligation, to file, prosecute, and maintain 
     (including conducting interference and opposition proceedings) all patent 
     applications and patents that are solely owned or Controlled by such party
     or assigned to such party pursuant to this Agreement that claim inventions
     arising out of the parties' performance under this Agreement. In regard to
     jointly owned Patent Rights, the party filing, prosecuting or maintaining 
     a patent application or patent hereunder shall provide to the other party
     the opportunity to review and comment upon the text of any priority 
     application before filing; consulting about the decision whether or not to
     foreign file an application, and if so, in which countries such filings 
     will be made; and giving the other party the opportunity, as far in 
     advance of filing dates as feasible, to fully review and comment on the 
     basic foreign filing text; provided, however that if a party chooses not 
     to share in the cost and attorneys for such activities such party will 
     lose its rights to such Patent Rights, each party shall provide to the 
     other copies of any search reports and official actions relating to 
     jointly owned Patent Rights, including notice of all interferences, 
     reissues, re-examinations, and oppositions received from the relevant 
     patent offices promptly after receipt of any such action.  With respect to
     Patent Rights owned or Controlled by a single party to this Agreement, 
     each party shall reasonably cooperate with and assist the other in 
     connection with activities described in this Section 8.7.1 in regard to 
     jointly owned Patent Rights, at the request of the Party owning or 
     Controlling such Patent Rights.  Each party shall execute and require that
     its employee, agent or consultant inventors to execute all documents 
     reasonably required in connection with the filing, prosecution, or 
     maintenance of patent applications or patents within respect to the 
     foregoing.  

     8.7.2 Failure to Prosecute.  Either party may elect upon ***prior notice 
     to discontinue prosecution or maintenance of any patent within Joint 
     Technology in any or all countries.  In such case, the other party shall 
     have the right to prosecute and maintain such patent applications and 
     patents in such countries it deems appropriate, at its sole expense.

8.8 Enforcement.  Cytovia and Aurora shall ***, to bring proceedings against 
any Third Party for the inappropriate use, including patent infringement, of 
technology, trade secrets or Patent Rights solely owned or Controlled by it, 
and *** risk and expense. ***retain any and all awards or damages obtained in 
any such proceeding.  At the request and expense of either party, the other 
party shall give the requesting party all reasonable assistance required to 
file and conduct any such proceeding.  For jointly owned Joint Technology, 
Cytovia and Aurora shall use their best efforts to coordinate pursuing a 
commercially reasonable action to address inappropriate use, including patent 



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<PAGE>    20

infringement, by third parties of such Joint Technology and to determine how 
expenses and any recovery from such action shall be allocated between the 
parties.  Cytovia, as a non-exclusive licensee, ***to provide Aurora with any
information known to Cytovia relating to the suspected or actual inappropriate 
use, including patent infringement, of the Aurora Technology.


ARTICLE 9.  CONFIDENTIALITY

9.1 Confidential Information.  Except as expressly provided herein, the 
parties agree that, for the Term of this Agreement and for five (5) years 
thereafter, the Receiving Party, except as expressly provided in this Article 
9, shall not disclose to any Third Party or use for any purpose other than as 
permitted under this Agreement any Confidential Information of the Disclosing 
Party, except to the extent that it can be established by the Receiving Party 
by competent written proof that such information:  

          (i )  was already known to the Receiving Party, other than under an
                obligation of confidentiality, at the time of disclosure;

          (ii)  was generally available to the public or otherwise part of the
                public domain at the time of its disclosure to the Receiving 
                Party;

          (iii) became generally available to the public or otherwise part of 
                the public domain after its disclosure and other than through 
                any act or omission of the Receiving Party in breach of this 
                Agreement;

          (iv)  was independently developed by the Receiving Party;
 
          (v)   was, subsequently, lawfully disclosed to the Receiving Party
                by a person other than the Disclosing Party; or

          (vi)  was approved in writing by the Disclosing Party for public
                disclosure by the Receiving Party.

9.2 Permitted Use and Disclosures.  Each party hereto may use or disclose 
Confidential Information disclosed to it by the other party to the extent such 
information is included in the Aurora Technology, Cytovia Technology or Joint 
Technology, and to the extent such use or disclosure is reasonably necessary 
and permitted in the exercise of the rights granted hereunder in filing or 
prosecuting patent applications, prosecuting or defending litigation, complying
with applicable governmental regulations, or court orders or otherwise 
submitting information to tax or other governmental authorities, conducting
clinical trials, or making a permitted sublicense or otherwise exercising 
license rights expressly granted to the other party pursuant to the terms of 
this Agreement, provided that if a party is required to make any such 
disclosure of the other party's Confidential Information, other than pursuant 



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<PAGE>     21

to a confidentiality agreement, it will give reasonable advance notice of such 
disclosure to the other party where reasonably possible and, save to the extent
inappropriate in the case of patent applications, will use its reasonable 
efforts to secure confidential treatment of such Confidential Information in 
consultation with the other party prior to such disclosure (whether through 
protective orders or otherwise) and disclose only the minimum necessary to 
comply with such requirements.

9.3 Nondisclosure of Terms.  Each of the parties hereto agrees not to 
disclose to any Third Party the terms of this Agreement without the prior 
written consent of the other party hereto, except to such party's attorneys,
advisors, investors, and others on a need-to-know basis under circumstances 
that reasonably ensure the confidentiality thereof, or to potential investors 
or corporate partners under an obligation of confidentiality, or to the extent 
required by law.  Notwithstanding the foregoing, the parties shall agree upon 
a press release to announce the execution of this Agreement.  Thereafter, 
Aurora and Cytovia may each disclose to Third Parties the information 
contained in such press release without the need for further approval by the 
other. 

9.4 Use of Data for Promotional Purposes.  Either party may (i) make public 
statements regarding Development Candidates or Products by announcing the 
achievement of milestones and fees therefor, following consultation with the 
other party and with the written consent of the other party to the form and 
content of the public statement, and (ii) without the prior consent of the 
other party, make public statements regarding the overall success rate(s) 
achieved by and/or for its customers with the use of Aurora Technology, and 
Cytovia Technology, provided it may not disclose any Compound structures, 
Screens or the other party's identity.  



ARTICLE 10.  REPRESENTATIONS AND WARRANTIES

10.1 Cytovia.  As of the Effective Date, Cytovia warrants and represents that: 

           (i)    it has the legal power, authority and right to enter into 
                  this Agreement, and to perform all of its obligations 
                  hereunder;

           (ii)   to the best of its knowledge it has the legal right and power 
                  to extend to Aurora the rights granted in this Agreement; and 

           (iii)  to the best of its knowledge, there are no existing or 
                  threatened actions, suits, or claims pending against it with 
                  respect to the Cytovia Technology.



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<PAGE>     22

10.2 Aurora.  As of the Effective Date, Aurora represents and warrants that:  

          (i)     it has the full legal power, authority, and right to enter 
                  into this Agreement, and to perform all of its obligations 
                  hereunder; 

          (ii)    to the best of its knowledge it has the legal right and power 
                  to extend the rights to Cytovia granted in this Agreement;

          (iii)   to the best of its knowledge there are no existing or
                  threatened actions, suits, or claims pending against it with 
                  respect to the Aurora Technology; and 

          (iv)    to the best of its knowledge and without performing any 
                  special investigation, ***. 
 
10.3 Disclaimer.  EXCEPT AS OTHERWISE EXPRESSLY SET FORTH IN THIS AGREEMENT, 
AURORA AND CYTOVIA MAKE NO REPRESENTATIONS AND EXTEND NO WARRANTIES OR 
CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED, STATUTORY OR OTHERWISE, WITH
RESPECT TO AURORA TECHNOLOGY, CYTOVIA TECHNOLOGY, SCREENS, COMPOUNDS, AGENTS, 
DEVELOPMENT CANDIDATES, DERIVATIVES, PRODUCTS, OR INFORMATION DISCLOSED 
INCLUDING, BUT NOT LIMITED TO, WARRANTIES OF MERCHANTABILITY, FITNESS FOR A 
PARTICULAR PURPOSE, VALIDITY OF ANY AURORA TECHNOLOGY OR CYTOVIA TECHNOLOGY, 
PATENTED OR UNPATENTED, OR NONINFRINGEMENT OF THE INTELLECTUAL PROPERTY RIGHTS
OF THIRD PARTIES.


ARTICLE 11.  INDEMNIFICATION

11.1 Cytovia.  Cytovia agrees to indemnify, defend, and hold Aurora, its 
Affiliates, and the directors, officers, employees, and agents of each of them 
(the "Aurora Indemnitees") harmless from and against any losses, costs, claims,
damages, liabilities or expenses (including reasonable attorneys' and 
professional fees and court and other expenses of litigation) (collectively, 
"Liabilities") arising out of or in connection with Third Party claims relating
to
 
          (i)     ***



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<PAGE>     23

11.2 Aurora.  Aurora agrees to indemnify, defend, and hold Cytovia, its 
Affiliates, Cytovia Collaborators and Licensees, and the directors, officers, 
employees, and agents of each of them (the "Cytovia Indemnitees") harmless from
and against any Liabilities arising out of or in connection with Third Party 
claims relating to 

          (i)     ***

11.3 Procedure.  In the event that any Indemnitee intends to claim 
indemnification under this Article 11, it shall promptly notify the other party
in writing of such alleged Liability.  The indemnifying party shall have the 
right to control the defense or settlement thereof using counsel of its choice 
that is reasonably acceptable to the Indemnitees; provided, however, that any 
Indemnitee shall have the right to retain its own counsel at its own expense, 
for any reason, including if representation of any Indemnitee by the counsel 
retained by the indemnifying party would be inappropriate due to actual or 
potential differing interests between such Indemnitee and any other party 
reasonably represented by such counsel in such proceeding.  The affected 
Indemnitees shall cooperate with the indemnifying party and its legal 
representatives in the investigation of any action, claim, or liability covered
by this Article 11.  The indemnified party shall not voluntarily make any 
payment or incur any expense with respect to any claim or suit without the 
prior written consent of the indemnifying party, which such party shall not be 
required to give.


ARTICLE 12.  TERM AND TERMINATION

12.1 Term.  The term of this Agreement shall begin as of the Effective Date 
and, unless terminated earlier as provided in this Article 12, continue in full 
force and effect until the *** (the "Term").

12.2 Termination for Cause.  Either party hereto may terminate this Agreement 
in the event the other party has materially breached or defaulted in the 
performance of any of its material obligations hereunder, and such default 
shall have continued for ***after written notice thereof was provided to the 
breaching party by the nonbreaching party.  Any termination shall become 
effective at the end of such *** period, unless the breaching party has cured 
any such breach or default prior to the expiration of the *** cure period or 
has provided a written plan to cure any such breach or default that is
acceptable to the other party.



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<PAGE>     24

12.3 Termination for Insolvency.  If voluntary or involuntary proceedings by or
against a party are instituted in bankruptcy under any insolvency law, or a 
receiver or custodian is appointed for such party, or proceedings are 
instituted by or against such party for corporate reorganization or the 
dissolution of such party, which proceedings, if involuntary, shall not have 
been dismissed within ***after the date of filing, or if such party makes an 
assignment for the benefit of creditors, or substantially all of the assets of 
such party are seized or attached and not released within *** thereafter, the 
other party may immediately terminate this Agreement effective upon giving 
notice of such termination to such party.

12.4 Effect of Breach or Termination.

     12.4.1 Accrued Obligations.  Termination of this Agreement for any reason 
     shall not release any party hereto from any liability which, at the time
     of such termination, has already accrued to the other party or which is 
     attributable to a period prior to such termination nor preclude either 
     party from pursuing all rights and remedies it may have hereunder or at 
     law or in equity with respect to any breach of this Agreement.
 
     12.4.2 Return of Confidential Information.  In the event of termination, 
     but not expiration, of this Agreement, Aurora and Cytovia shall promptly 
     return to the other party all Confidential Information received from the 
     other party (except one (1) copy of which may be retained for archival 
     purposes), and neither party shall be entitled to use any Confidential 
     Information of the other party for any purpose during the Term such 
     Confidential Information is to remain confidential, as provided in Section
     9.1, provided, however, that if this Agreement terminates prior to its 
     expiration pursuant to Section 12.1 for breach of this Agreement by 
     Aurora, Cytovia may continue to use the Confidential Information 
     pertaining to Aurora Compounds, Cytovia Compounds, Screens and data from
     Screens for the purposes permitted in this Agreement, including without 
     limitation for purposes set forth in Section 2.4.3.  Upon any such 
     termination all materials provided by Cytovia to Aurora, including but not
     limited to Compounds, shall be returned to Cytovia or destroyed at the 
     discretion of Cytovia.  For any termination by Aurora for cause, all 
     materials provided by Aurora to Cytovia shall be returned to Aurora or 
     destroyed at the discretion of Aurora.

     12.4.3 Licenses. The licenses granted to Aurora hereunder shall terminate
     in the event of termination of this Agreement.

12.5 Survival.  Articles 1, 3, 5, 7, 8, 9, 11,12 and 13 shall survive 
expiration or termination of this Agreement for any reason.



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<PAGE>     25

ARTICLE 13.  MISCELLANEOUS

13.1 Governing Law.  This Agreement and any dispute arising from the 
construction, performance, or breach hereof shall be governed by, construed, 
and enforced in accordance with the laws of the State of California, without 
reference to conflicts of laws principles.

13.2 Dispute Resolution.

      13.2.1 Arbitration.  The parties recognize that disputes as to certain 
      matters may from time to time arise during the term of this Agreement 
      which relate to either party's rights and/or obligations hereunder.  It 
      is the objective of the parties to establish procedures to facilitate the
      resolution of disputes arising under this Agreement in an expedient 
      manner by  utual cooperation and without resort to arbitration.  The 
      parties agree that prior to any arbitration concerning this Agreement, 
      Cytovia's president or CEO and Aurora's president or CEO will meet in 
      person in a good faith effort to resolve any disputes concerning this 
      Agreement as set forth in Section 2.1.4. Any dispute arising out of or 
      relating to this Agreement which is not resolved between the parties or 
      the designated officers of the parties as set forth in Section 2.1.4 shall
      be resolved by final and binding arbitration conducted in San Diego, 
      California (unless the parties mutually agree to another location) under 
      the then current Licensing Agreement Arbitration Rules of the American 
      Arbitration Association ("AAA").  The arbitration shall be conducted by 
      three (3) arbitrators who are knowledgeable in the subject matter which 
      is at issue in the dispute. One arbitrator is selected by Cytovia and one
      arbitrator is selected Aurora and the third arbitrator is appointed by 
      the AAA. In conducting the arbitration, the arbitrators shall determine 
      what discovery will be permitted, consistent with the goal of limiting 
      the cost and time which the parties must expend for discovery (and 
      provided that the arbitrators shall permit such discovery they deem 
      necessary to permit an equitable resolution of the dispute), ensure that 
      the total time of the arbitration from filing to a final decision or 
      executed settlement agreement is less than six months, and be able to 
      decree any and all relief of an equitable nature, including but not 
      limited to such relief as a temporary restraining order, a preliminary 
      injunction, a permanent injunction, specific performance or repletion of 
      property.  Discovery shall be permitted as set forth in the Federal Rules
      of Civil Procedure with respect to the performance by the parties of 
      their obligations under this Agreement and such other matters as the 
      arbiters may determine (it being the intent of the parties that full 
      discovery occur with respect to salient facts). The arbitrators shall 
      also be able to award actual or general damages, but shall not award any 
      other form of damage (e.g., consequential, punitive or exemplary 
      damages).  The parties shall share equally the arbitrator's fees and 
      expenses pending the resolution of the arbitration unless the arbitrator,
      pursuant to its right but not its obligations, requires the non-
      prevailing party to bear all or any portion of the costs of the 
      prevailing party.  The decision of the arbitrator shall be final and may
      


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<PAGE>     26

      be sued on or enforced by the party in whose favor it runs in any court 
      of competent jurisdiction at the option of such party. Notwithstanding 
      anything to the contrary in this Section 13, either party may seek 
      immediate injunctive or other interim relief from any court of competent 
      jurisdiction to enforce and protect the patent rights, copyrights, 
      trademarks, or other intellectual property rights owned or Controlled by 
      such party.  In no event shall a demand for arbitration be made after the
      date when the institution of a legal or equitable proceeding based on 
      such claim, dispute or other matter in question would be barred by the 
      applicable statute. Notwithstanding any other provisions of this 
      Agreement, all disputes regarding the validity, scope or enforceability 
      of patents shall be submitted to a court of competent jurisdiction in the
      country where such patent has issued. 

13.3 Assignment.  This Agreement shall not be assignable by either party, 
without the written consent of the other party, provided, however, that either 
party may assign this Agreement without the written consent of the other party 
in the event a merger, reorganization, operation of law, acquisition, or sale 
of all or substantially all of the business or assets of such party relating 
to the subject matter hereof. This Agreement shall be binding upon and inure to
the benefit of any permitted assignee or other transferee, and any such party 
shall agree to perform the obligations of the assignor or transferor.

13.4 Independent Contractors.  The relationship of the parties hereto is that
of independent contractors.  Neither party hereto is to be deemed to be an 
agent, partner, or joint venturer of the other party for any purpose as a 
result of this Agreement or the transactions contemplated thereby.

13.5 Compliance with Laws. In exercising their rights under this Agreement, the
parties shall fully comply in all material respects with the requirements of 
any and all applicable laws, regulations, rules, and orders of any governmental
body having jurisdiction over the exercise of rights under this Agreement, 
including, without limitation, those applicable to the discovery, development,
manufacture, distribution, import and export, and sale of pharmaceutical 
products.

13.6 Notices. Legal notices, requests, and other communications hereunder shall
be in writing and shall be delivered personally or by registered or certified 
mail, return receipt requested, postage prepaid, in each case to the respective 
address specified below or such other address as may be specified in writing to 
the other party hereto, and shall be deemed to have been given upon receipt, or
if transmitted by fax, upon electronic confirmation of receipt:


          If to Aurora:          Aurora Biosciences Corporation
                                 11010 Torreyana Road
                                 San Diego, CA 92121 U.S.A.
                                 Attn.:  President and CEO
                                 CC:  Legal and Business Development
                                 Fax: (619) 452-5723



**Confidential Treatment Requested     26


<PAGE>     27

          If to Cytovia:          Cytovia, Inc.
                                  201 Technology Drive
                                  Irvine CA 92616 U.S.A.
                                  Attn.:  President and CEO
                                  CC. Business Development
                                  Fax: (949) 753-6109

13.7 Severability. In the event that any provision of this Agreement becomes or
is declared by a court of competent jurisdiction to be illegal, unenforceable 
or void, this Agreement shall continue in full force and effect to the fullest 
extent permitted by law without said provision, and the parties shall amend the
Agreement to the extent feasible to lawfully include the substance of the 
excluded term to as fully as possible realize the intent of the parties and
their commercial bargain.

13.8 Waiver.  It is agreed that no waiver by either party hereto of any breach
or default of any of the covenants or agreements herein set forth shall be 
deemed a waiver as to any subsequent and/or similar breach or default.  No 
waiver shall be effective unless in writing signed by the party having the 
waived right.

13.9 Force Majeure.  Nonperformance or delayed performance of any party shall 
be excused to the extent that performance is rendered impossible or untimely 
by strike, fire, earthquake, flood, governmental acts or orders or 
restrictions, failure of suppliers, or any other reason where such failure to
perform or delay in performance is beyond the reasonable control and not caused
by the negligence or intentional conduct or misconduct of the nonperforming 
party, provided such party uses its *** to resume performance as promptly as 
possible.

13.10 Advice of Counsel.  This Agreement has been negotiated by the parties and
their respective counsel and shall be fairly interpreted in accordance with its
terms and without application of any rules of construction relating to which 
party drafted the Agreement being applied in favor or against either party.

13.11 No Consequential Damages.  IN NO EVENT SHALL EITHER PARTY TO THIS 
AGREEMENT HAVE ANY LIABILITY TO THE OTHER FOR ANY SPECIAL, CONSEQUENTIAL, OR 
INCIDENTAL DAMAGES ARISING UNDER THIS AGREEMENT UNDER ANY THEORY OF LIABILITY,
REGARDLESS OF WHETHER A PARTY HAS NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.



***Confidential Treatment Requested    27


<PAGE>  28

13.12 Complete Agreement. This Agreement, constitutes the entire agreement, 
both written and oral, between the parties with respect to the subject matter 
hereof, and all prior agreements respecting the subject matter hereof, either 
written or oral, expressed or implied, shall be abrogated, canceled, and are 
null and void and of no effect.  No amendment or change hereof or addition 
hereto shall be effective or binding on either of the parties unless reduced 
to writing and executed by a duly authorized representative of each of Aurora 
and Cytovia.

13.13 Counterparts.  This Agreement may be executed in counterparts, each of 
which shall be deemed to be an original and all of which together shall be 
deemed to be one and the same agreement.



IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be duly 
executed by their authorized representatives and delivered in duplicate 
originals as of the Effective Date.


AURORA BIOSCIENCES CORPORATION                  CYTOVIA INC.

By:     /s/ Timothy J. Rink                     By:     /s/  Eckard Weber
        ---------------------                           --------------------
Date:   July 16, 1998                           Date:   July 16, 1998
        ---------------------                           --------------------
Name:   Timothy Rink                            Name:   Eckard Weber
        ---------------------                           --------------------
Title:  President and CEO                       Title:  President and CEO
        ---------------------                           --------------------



***Confidential Treatment Requested    28


<PAGE>     29

                                   EXHIBIT A

                                     ***


                                   EXHIBIT B
									
                                     ***



***Confidential Treatment Requested    29
 


<PAGE>     1                                                    EXHIBIT 10.38

CONFIDENTIAL TREATMENT REQUESTED UNDER 17 C.F.R. SECTIONS 200.80(B)(4), 200.83
AND 240.24B-2.  "***" INDICATES OMITTED MATERIAL THAT IS THE SUBJECT OF A
CONFIDENTIAL TREATMENT REQUEST THAT HAS BEEN FILED SEPARATELY WITH THE SECRETARY
OF THE COMMISSION.



   

                          AMCS DEVELOPMENT AGREEMENT



                                   BETWEEN


                            WARNER-LAMBERT COMPANY


                                     AND


                        AURORA BIOSCIENCES CORPORATION



***Confidential Information Requested  1


<PAGE>     2

                          AMCS DEVELOPMENT AGREEMENT

THIS AGREEMENT is entered into as of the Effective Date (as defined below) by
and between WARNER-LAMBERT COMPANY, a Delaware corporation, having offices at
2800 Plymouth Road Ann Arbor, Michigan, 48105 ("PD"), and AURORA BIOSCIENCES
CORPORATION, a Delaware corporation having offices at 11010 Torreyana Road
San Diego, California 92121 ("Aurora").

                                   RECITALS

WHEREAS, Aurora has expertise in the design and development of automated
systems for the storage of chemical and biological compounds; and

WHEREAS, PD desires to acquire and Aurora desires to develop and supply PD
with an automated system for the storage and retrieval of chemical and
biological compounds.

NOW, THEREFORE, in consideration of the foregoing premises and of the
covenants, representations and agreements set forth below, the parties agree
as follows:

1.     DEFINITIONS

As used herein, the following terms shall have the following meanings:

"Affiliate" means any corporation, association or other entity which directly
or indirectly controls, is controlled by or is under common control with the
party in question.  As used herein, the term control shall mean direct or
indirect beneficial ownership of more than 50% of the voting or income
interest in such corporation or other business entity.

"Agreement" means this agreement, together with all appendices, exhibits and
schedules hereto, and as the same may be amended or supplemented from time to
time hereafter by a written agreement duly executed by authorized
representatives of each party hereto.

"Approved Engineering Change Order" shall have the meaning set forth in
Section 2.9 hereof.

"Aurora Copyrights" means all ***.

"Aurora Patent Rights" means ***.

"Aurora System Technology" means all ***.

"Confidential Information" means all confidential information, data, and
materials received by either party from the other party pursuant to this
Agreement which if in writing is marked confidential, and all information,
data and materials, developed pursuant to this Agreement, including, without
limitation, Technology of each party, subject to the exceptions set forth in
Section 6.2.


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<PAGE>     3

"Control" or "Controlled" means possession by a party of the ability to grant
a license or sublicense in accordance with the terms of this Agreement, and
without violating the terms of any agreement by such party with any Third 
Party.

"Copyrights" means copyrights throughout the world which a party hereto owns
or Controls, individually or jointly, any title thereto or rights thereunder.

"CPI" shall have the meaning set forth in Section 3.2 hereof.

"Effective Date" means the date that this Agreement is executed by the last
party to so execute.

"Engineering Change Order" has the meaning set forth in Section 2.9 hereof.

"First Milestone" has the meaning set forth in Section 2.8.2 hereof.

"Invention" means any new and useful process, machine, method, technique or
composition of matter, or improvement thereto, whether or not patentable.

"Initial Support Period"  shall have the meaning set forth in Section 3.1
hereof.

"Know-How" means information and data which is not generally known to the
public, comprising: Inventions, designs, concepts, algorithms, formulae,
software, techniques, practices, processes, methods, knowledge, skill,
experience, expertise and technical information.

"Patent Rights" means all U.S. or foreign (including regional authorities
such as the European Patent Office) regular or provisional patent
applications, including any continuation, continuation-in-part, or division
thereof or any substitute application therefor or equivalent thereof, and any
patent issuing thereon, including any reissue, reexamination or extension
thereof and any confirmation patent or registration patent or patent of
additions based on any such patent, containing one or more claims to an
Invention, and which a party hereto owns or Controls, individually or jointly,
any title thereto or rights thereunder. 

"Person" shall mean an individual, corporation, partnership, limited
liability company, trust, business trust, association, joint stock company,
joint venture, pool, syndicate, sole proprietorship, unincorporated
organization, governmental authority or any other form of entity not
specifically listed herein.

***
"Service and Support" shall have the meaning set forth in Section 3.1 hereof.

***.



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<PAGE>     4

"***.

"System Steering Committee" shall have the meaning set forth in Section 2.2
hereof.



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<PAGE>     5

***
"Technology" means Know-How, Copyrights and Patent Rights.

"Term" means the period beginning on the Effective Date and terminating in
accordance with Section 11 hereof.

"Third Party" means any Person other than Aurora or PD.

***
 "Validation" has the meaning set forth in Section 2.7 hereof.

2.     SYSTEM DEVELOPMENT, ACCEPTANCE AND DELIVERY

       2.1. System Development.
       On the Effective Date, Aurora will initiate the design, development and
       plans for supply and installation of the System by the System Target
       Acceptance Date.  Both parties will act within the presently estimated
       time periods and in accordance with the terms hereof and in accordance
       with U.S. laws, rules and regulations applicable to the design,       
       development, manufacture, supply, and installation of instrumentation.
       ***.

       2.2. System Steering Committee.
       Aurora and PD shall establish a committee (the "System Steering
       Committee") to oversee the development of the System and formally 
       review, the status of such development, including project timelines, the
       System Specifications, coordination of the review of the ***.  For the 
       first ***following the Effective Date, the System Steering Committee 
       shall meet on a monthly basis, and on a quarterly basis thereafter, at 
       mutually agreed upon times and locations using mutually agreed upon 
       meeting formats, including tele- and video-conferencing.  On an 
       alternating basis, one party shall promptly prepare and deliver to the 
       members of the System Steering Committee minutes in respect thereof, for 
       review and approval by both parties.  The System Steering Committee will 
       be established not later than ***after the Effective Date.  The System 
       Steering Committee will consist of ***representatives designated by PD 
       and ***representatives designated by Aurora.  Each representative will 
       have one ***



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<PAGE>     6

       ***.  Either party may, upon reasonable written notice, require up to 
       two(2) special meetings of the System Steering Committee per year, at 
       mutually agreed upon times and locations using mutually agreed upon 
       meeting formats, including tele- and video-conferencing; provided, 
       however, that such meeting shall occur within ***of written notice of
       such meeting.

       2.3. Audits.
       From time to time during the term of this Agreement, PD representatives 
       shall have the right, upon reasonable advance written notice to Aurora,
       to visit the facilities where the System is being developed to verify 
       the information in the progress reports submitted to the System Steering
       Committee and to confirm Aurora's compliance with the terms hereof.

       2.4. Shipment, and Installation. 
       ***

       2.5. Aurora Employees. 
       All Aurora employees or independent contractors will be informed by PD
       of PD's security and work rules and will be required to comply with such 
       security and work rules. Aurora will be responsible for its employees or 
       contractors performing such installation, including salaries, benefits
       and workers compensation. Such personnel shall be and remain employees or
       independent contractors of Aurora and Aurora shall require all such 
       employees to adhere to all PD work policies and procedures while on PD 
       premises and shall indemnify and hold PD harmless from and against any
       and all liability, costs, damages and expenses arising out of claims by 
       such employees or independent contractors of Aurora relating to the 
       presence of such employees or independent contractors on PD's premises; 
       provided, however, that Aurora shall not indemnify and hold harmless PD
       or any such claim arising from PD's negligence or willful or reckless 
       misconduct.  

       2.6. Employment Relationship.
       All persons assigned by Aurora to perform work on its behalf are and    
       shall remain its employees or independent contractors and Aurora shall 
       be solely responsible for complying with all United States federal, 
       state and municipal laws, rules and regulations, including, without



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<PAGE>     7 

       limitation, reporting and payment of the entire compensation (including 
       all fringe benefits) of each person, withholding of federal income taxes,
       state income taxes, FICA and FUTA taxes and other payroll deductions, and
       all premiums or payments made for workmen's compensation coverage, made 
       for or on behalf of Aurora employees or independent contractors. Aurora 
       acknowledges that none of its employees are employees of PD and that no 
       such employees are eligible to participate in any employee benefit plans 
       of PD.  Aurora further acknowledges that no such individuals are
       eligible to participate in any such benefit plans even if it is later
       determined that any of its employees' status during the period of this
       Agreement was that of an employee of PD.  In addition, Aurora waives
       any claims that it may have under the terms of any such benefit plans
       or under any law for participation in or benefits under any of PD's
       benefit plans. 

       2.7. ***.

       ***

       2.8. Payments Relating to Development of the System.  
       PD will make the following payments to Aurora in consideration of the 
       development, delivery and Validation of the System:

       ***



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<PAGE>     8

***

       ***

***

***

3.     SERVICE AND SUPPORT

       3.1. Initial Service Period.
       *** (the "Initial Support Period"), Aurora will provide service and 
       support for the System, ***.  The service and support is more fully 
       described on Exhibit 3 attached hereto ("Service and Support***.  Aurora 
       will designate an appropriate Aurora employee to act as its primary 
       contact with PD to coordinate such Service and Support and Aurora shall
       notify PD of the identity of such Person.

       3.2. Future Service and Support.
       ***. This purchased annual Service and Support will be available to PD 
       until ***, after which period PD and Aurora may at their discretion 
       negotiate in good faith for further Service and Support.  Following the 
       Initial Support Period, Aurora and PD may also, at their discretion, 
       negotiate in good faith the terms and conditions for alternative service 
       and support to be provided by Aurora, including more limited service and 
       support for System components or software.



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<PAGE>     9

4.     INTELLECTUAL PROPERTY RIGHTS

       4.1. Grant of Rights from Aurora to PD.
       
       ***

       4.2. Ownership of Intellectual Property and Property

            4.2.1. No Implied License.  Except as otherwise expressly provided
            in this Agreement, nothing in this Agreement is intended to convey 
            or transfer ownership by one party to the other of any rights, title
            or interest in any Confidential Information, Technology, Copyrights
            or Patent Rights owned or Controlled by a party.  Except as
            expressly provided for in this Agreement, nothing in this Agreement
            shall be construed as a license or sublicense by one party to the
            other of any rights in any Technology, Copyrights, or Patent Rights 
            owned or Controlled by a party.
  
            4.2.2. Inventions By PD. ***



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<PAGE>     10

            ***

            4.2.3. Inventions By Aurora.  Aurora shall own such Inventions and 
            other Technology made solely by its employees and agents, and all 
            patent applications and patents claiming such Inventions and other 
            Technology.

            4.2.4.  ***

            4.2.5. No Implied License.  The parties recognize and agree, that
            in some instances the practice of Technology conceived or made
            jointly by employees or agents of PD and employees or agents of
            Aurora and owned jointly pursuant to Section 4.2.4 may require
            additional license(s) under Aurora System Technology, Aurora's
            Copyrights and Aurora's Patent Rights.

            4.2.6. Inventorship. PD and Aurora agree, for the purpose of this 
            Section 4, inventorship of patentable Inventions shall be determined
            in accordance with U.S. patent law.

5.     INTELLECTUAL PROPERTY ENFORCEMENT AND DEFENSE OF INFRINGEMENT CLAIMS
  
       5.1. Intellectual Property Enforcement.
       PD and Aurora shall *** bring proceedings against any Third Party for 
       the inappropriate use, including patent infringement, of Technology or 
       Patent Rights ***Controlled by it, and ***party shall be entitled to 
       retain any and all awards or damages obtained in any such proceeding.  
       At the request and expense ***shall give ***all reasonable assistance 
       required to file and conduct any such proceeding.  For jointly owned 
       Technology or Patent Rights, PD and Aurora shall use their best efforts



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<PAGE>     11
 
       to coordinate pursuing a commercially reasonable action to address 
       inappropriate use, including patent infringement, by Third Parties of 
       such Technology and Patent Rights and to determine how expenses and any 
       recovery from such action shall be allocated between the parties.  

       ***

       5.2. Defense of Infringement Claims Pertaining to Aurora Technology
       and Aurora Patent Rights.
       PD will cooperate with Aurora, at Aurora's expense, in the defense of
       any suit, action or proceeding against Aurora alleging the
       infringement of the intellectual property rights of a Third Party by
       reason of Aurora's use of any Aurora Patent Rights and Aurora System
       Technology licensed to PD under this Agreement. ***. 

6.     TREATMENT OF CONFIDENTIAL INFORMATION; PUBLICITY

       6.1. Confidentiality Obligation.
       Subject to the terms and conditions of this Agreement, PD and Aurora each
       agree that, during the term of this Agreement and for ***thereafter, it 
       will keep confidential all Confidential Information (including, without 
       limitation, not to disclose such Confidential Information in patent 
       applications).  Neither PD nor Aurora shall use the other party's 
       Confidential Information except as expressly permitted in this Agreement;
       provided, however, Aurora shall be able to disclose that Confidential 
       Information which specifically describes the components of the System, 
       including hardware and software components, to potential Third Party 
       collaborators.

       PD and Aurora each agree that any disclosure of the other's Confidential
       Information to any officer, employee, contractor, consultant, sublicensee
       or  agent of the other party or any of the other party's Affiliates may 
       be made only if and to the extent necessary to carry out its 
       responsibilities under this Agreement and to exercise the rights granted
       to it hereunder, shall be limited to the extent consistent with such
       responsibilities and rights, and shall be provided only to such persons 
       or entities who are bound to maintain same in confidence in a like manner
       as the party receiving same hereunder is so required. Each party, upon 
       the other's request, will return all the Confidential Information 
       received from  the other party pursuant to this Agreement, including all 
       copies and extracts of documents, ***of the request of the other party 
       following any termination of this Agreement, except for one (1) copy 
       which may be kept for the purpose of ascertaining and complying with 
       continuing confidentiality obligations under this Agreement.



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<PAGE>     12

       6.2. Exceptions to Confidential Information.
       Confidential Information shall not include any information which the   
       receiving party can prove by competent evidence:

            i)     is now, or hereafter becomes, through no act or failure to 
                   act on the part of the receiving party, generally known or 
                   available;

            ii)    is known by the receiving party or any of its Affiliates at 
                   the time of receiving such information, as evidenced by its 
                   records;

            iii)   is hereafter furnished to the receiving party or any of its 
                   Affiliates without restriction as to disclosure or use by a 
                   Third Party lawfully entitled to so furnish same;

            iv)    is independently developed by the employees, agents or 
                   contractors of the receiving party or any of its Affiliates 
                   without the aid, application or use of the disclosing
                   party's Confidential Information;

            v)     is the subject of a written permission to disclose provided 
                   by the disclosing party; or

            vi)    is provided by the disclosing party to a Third Party without 
                   restriction as to confidentiality.

       A party may also disclose Confidential Information of the other where 
       required to do so by law or legal process, provided that, in such event,
       the party required to so disclose shall give maximum practical advance 
       written notice of same to the other party and will cooperate with the 
       other party's efforts to seek, at the request and expense of the other 
       party, all confidential treatment and protection for such disclosure
       as is permitted by applicable law.

       6.3. Confidentiality of Agreement Terms.
       The parties agree that the material financial terms of this Agreement   
       will be considered Confidential Information of both parties.  
       Notwithstanding the foregoing, either party may disclose such terms in
       legal proceedings or as are required to be disclosed in its financial 
       statements, by law. Either party shall have the further right to 
       disclose the material financial terms of this Agreement under
       strictures of confidentiality to any of its Affiliates and to any
       potential acquirer, merger partner, bank, venture capital firm, or
       other financial institution to obtain financing.



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       6.4. Publicity.
       Except as required by law and as provided in this Article 6, neither 
       party may make any public announcement or otherwise disclose the terms
       of this Agreement without the prior written consent of the other party, 
       which consent shall not be unreasonably withheld.

7.     PATENT PROSECUTION AND COPYRIGHTS

       7.1. Patents.
       ***

       The control and expense of the filing, prosecution (including an 
       opposition or interference) and maintenance of applications claiming
       solely owned Inventions will be at the discretion of the owner.  At PD's 
       reasonable request, ***.

       7.2. Copyrights. 
       The parties agree to treat and handle, to the maximum practical extent,
       any Copyrights owned or Controlled by a party in the same manner as 
       Patent Rights owned or Controlled by such party.

8.     WARRANTIES AND INDEMNIFICATION

       8.1. Mutual Representations and Warranties. 
       The parties make the following representations and warranties to each 
       other:

            8.1.1. Corporate Power.  Each party hereby represents and warrants 
            that such party (a) is duly organized and validly existing under
            the laws of the state of its incorporation and has full corporate
            power and authority to enter into this Agreement and to carry out
            the provisions hereof; (b) has the requisite power and authority
            and the legal right to own and operate its property and assets,
            to lease the property and assets it operates under lease, and to
            carry on its business as it is now being conducted; and (c) is in
            compliance with all requirements of applicable law, except to the
            extent that any noncompliance would not have a material adverse
            effect on the properties, business, financial or other condition
            of it and would not materially adversely affect its ability to
            perform its obligations under the Agreement.

            8.1.2. Due Authorization.  Each party hereby represents and
            warrants that such party (a) has the requisite power and
            authority and the legal right to enter into the Agreement and to
            perform its obligations hereunder; and (b) has taken all necessary
            action on its part to authorize the execution and delivery of the
            Agreement and to authorize the performance of its obligations  
            hereunder and the grant of rights extended by it hereunder.


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            8.1.3. Binding Agreement.  Each party hereby represents and
            warrants to the other that: (a) this Agreement has been duly
            executed and delivered on its behalf and is a legal and valid
            obligation binding upon it and is enforceable in accordance with
            its terms; (b) the execution, delivery and performance of this
            Agreement by such party does not conflict with any agreement,
            instrument or understanding, oral or written, to which it is a
            party or by which it may be bound, nor violate any law or
            regulation of any court, governmental body or administrative or
            other agency having authority over it; and (c) all necessary
            consents, approvals and authorizations of all governmental 
            authorities and other persons required to be obtained by it in 
            connection with the Agreement have been obtained.

       8.2. Warranties and Aurora Technology. 
       Aurora represents and warrants to PD as of the Effective Date the 
       following:

            8.2.1. ***

            8.2.2. EXCEPT AS SET FORTH IN SECTION 8.2.1 ABOVE, AURORA
            (INCLUDING ITS OFFICERS, EMPLOYEES AND AGENTS) EXPRESSLY
            DISCLAIMS ANY REPRESENTATIONS AND WARRANTIES, WHETHER EXPRESS OR
            IMPLIED, RELATING TO THE SYSTEM, AURORA PATENT RIGHTS, AURORA
            COPYRIGHTS AND AURORA SYSTEM  TECHNOLOGY. AURORA FURTHER
            DISCLAIMS I) ANY EXPRESS OR IMPLIED WARRANTY OF MERCHANTABILITY
            OR FITNESS FOR A PARTICULAR PURPOSE OF THE SYSTEM, AURORA SYSTEM
            TECHNOLOGY AND AURORA PATENT RIGHTS, II) ANY EXPRESS OR IMPLIED
            WARRANTY THAT THE SYSTEM, PRACTICE OF AURORA COPYRIGHTS, AURORA
            SYSTEM TECHNOLOGY OR AURORA PATENT RIGHTS WILL NOT INFRINGE A
            PATENT, COPYRIGHT, TRADEMARK OR OTHER RIGHT OF A THIRD PARTY, AND
            III)  ANY EXPRESS OR IMPLIED WARRANTY REGARDING THE PATENTABILITY
            OF ANY AURORA SYSTEM TECHNOLOGY, INCLUDING THE SYSTEM, AURORA
            SYSTEM TECHNOLOGY CLAIMED IN PATENT APPLICATIONS AS PART OF
            AURORA PATENT RIGHTS.


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       8.3. Aurora Indemnification.
       ***

       IN NO EVENT SHALL AURORA BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL 
       DAMAGES SUFFERED BY PD RESULTING FROM THE EXERCISE OF ANY RIGHTS GRANTED 
       IN ACCORDANCE WITH THIS AGREEMENT.

       8.4. PD Indemnification. 
       ***

       IN NO EVENT SHALL PD BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL 
       DAMAGES SUFFERED BY AURORA RESULTING FROM THE EXERCISE OF ANY RIGHTS 
       GRANTED IN ACCORDANCE WITH THIS AGREEMENT.

9.     TERM  AND TERMINATION

       ***



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<PAGE>     16

       9.2	Termination By Mutual Agreement.
       ***
 
       9.3	Termination for Cause.
       Either party shall have the right to terminate this Agreement at any time
       for a material breach of this Agreement by the other party, provided
       that the non-breaching party shall have given the breaching party ***of
       the breach and intention to terminate this Agreement in the absence of a
       cure*** of receipt of such notice by the beaching party.   Upon
       termination of this Agreement for cause by Aurora, all licenses and
       sublicenses granted in accordance with this Agreement shall be
       terminated.  The non-breaching party, upon termination of this
       Agreement may seek actual or general damages, but not consequential
       damages, and remedies available to it at law or in equity.

       ***

       9.5	Effect of Expiration or Termination.
       The obligations and rights of the parties under Sections 3.1 and 4.1, 
       4.2, 6, 7, 8.1  and 8.2 thereof, as well as any provisions, which, by 
       their intent or meaning are intended to so survive, shall survive 
       termination or expiration of this Agreement.  

10.    MISCELLANEOUS

       10.1. Assignment.
       ***



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       ***

       10.2. Binding Effect.
       This Agreement shall be binding upon and inure to the benefit of the 
       successors and permitted assigns of the parties.  Any assignment not in 
       accordance with this Agreement shall be void.

       10.3. Force Majeure.
       Neither party shall lose any rights hereunder or be liable to the other 
       party for damages or losses on account of failure of performance by the 
       defaulting party if the failure is occasioned by war, fire, explosion, 
       floods (including but not limited to floods caused by El Nino), 
       earthquake, strike, lockout, embargo, act of God, or any other similar 
       cause beyond the control of the defaulting party, provided that the party
       claiming force majeure has exerted all reasonable efforts to avoid or    
       remedy such force majeure and thereafter takes all reasonable steps to 
       mitigate any such delay in performance hereunder and any damages that
       may be incurred by the other party thereby.

       10.4. Notices.
       Any notices or communications provided for in this Agreement to be made 
       by either of the parties to the other shall be in writing, in English, 
       and shall be made by prepaid air mail or overnight carrier with return 
       receipt addressed to the other at its address set forth below.  Any such 
       notice or communication may also be given by hand, or facsimile to the 
       appropriate designation.  Notices shall be sent:


       If to PD, to:          Warner-Lambert Company
                              2800 Plymouth Road
                              Ann Arbor, Michigan, 48105
       Facsimile number:      (734) 622-1553


       Attention:             Dr. Ronald Cresswell
                              Vice President and Chairman
                              Parke-Davis Research Division


       Copy:                  Warner-Lambert Company
                              201 Tabor Road
                              Morris Plains, NJ 07950
                              Attn: Vice President and General Counsel
       Facsimile number:      (973) 540-3117



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<PAGE>     18

       If to Aurora, to:       Aurora Biosciences Corporation
                               11010 Torreyana Road
                               San Diego, CA 92121
       Facsimile number:       (619) 452-5723


       Attention:              Timothy J. Rink, M.D., Sc.D.
                               Chairman, CEO, and President


       Copy:                   Paul Grayson
                               Senior Vice President, Corporate Development

       provided that if such notice or communication relates to an amendment to
       this Agreement or to any notice pursuant to Article 11 hereof, a copy 
       shall also be sent to:


       If to PD, to:           Jeffery M. Brinza
                               Assistant General Counsel
                               Pharmaceutical Research Division
                               Warner-Lambert Company
                               2800 Plymouth Road
                               Ann Arbor, MI 48105
                               Fax:  734-622-1553
			

       If to Aurora, to:       John D. Mendlein
                               Senior Legal Counsel
                               Aurora Biosciences Corporation
                               11010 Torreyana Road
                               San Diego, California  92121
                               Fax:  619-973-6748

       Either party may by like notice specify or change an address to which
       notices and communications shall thereafter be sent.  Notices sent by 
       mail, facsimile or cable shall be effective upon receipt and notices 
       given by hand shall be effective when delivered.

       10.5. Governing Law and Jurisdiction.  
       This Agreement shall be governed by the laws of the State of California,
       as such laws are applied to contracts entered into and to be performed 
       within such state. Any dispute arising out of or relating to this 
       Agreement ***

       10.6	Waiver.
       Except as specifically provided for herein, the waiver from time to time 
       by either of the parties of any of their rights or their failure to 
       exercise any remedy shall not operate or be construed as a continuing 
       waiver of same or any of the other of such party's rights or remedies 
       provided in this Agreement.



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       10.7. Severability.
       If any term, covenant or condition of this Agreement or the application 
       thereof to any party or circumstance shall, to any extent, be held to be
       invalid or unenforceable, then the remainder of this Agreement, or the  
       application of such term, covenant or condition to the parties or 
       circumstances other than those as to which it is held invalid or 
       unenforceable, shall not be affected thereby and each term, covenant or 
       condition of this Agreement shall be valid and be enforced to the
       fullest extent permitted by law; and the parties hereto covenant and
       agree to renegotiate any such term, covenant or application thereof in
       good faith in order to provide a reasonably acceptable alternative to
       the term, covenant or condition of this Agreement or the application
       thereof that is invalid or unenforceable, it being the intent of the
       parties that the basic purposes of this Agreement are to be effectuated.

       10.8. Independent Contractors.
       It is expressly agreed that Aurora and PD shall be independent 
       contractors and that the relationship between the two parties shall not 
       constitute a partnership or agency of any kind.  Neither Aurora nor PD 
       shall have the authority to make any statements, representations or 
       commitments of any kind, or to take any action, which shall be binding on
       the other, without the prior written authorization of the other party to 
       do so.
 
       10.9. Counterparts.
       This Agreement may be executed in two (2) or more counterparts, each of 
       which shall be deemed an original, but all of which together shall 
       constitute one and the same instrument.

       10.10. Entire Agreement.
       This Agreement between the parties of even date herewith sets forth all 
       of the covenants, promises, agreements, warranties, representations, 
       conditions and understandings between the parties hereto, and supersedes 
       and terminates all prior agreements and understanding between the 
       parties, with respect to the subject matter hereof.  There are no 
       covenants, promises, agreements, warranties, representations conditions 
       or understandings, either oral or written, between the parties other
       than as set forth herein and therein.  No subsequent alteration,
       amendment, change or addition to this Agreement shall be binding upon
       the parties hereto unless reduced to writing and signed by the
       respective authorized officers of the parties.  This Agreement shall
       not be strictly construed against either party hereto.  Any conflict
       between the terms set forth in the text of this Agreement and the
       terms of any Exhibit hereto shall be resolved in favor of the text of
       this Agreement.



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<PAGE>     20

       10.11. No Third Party Beneficiaries.
       No third party, including any employee of any party this Agreement, shall
       have or acquire any rights by reason of this Agreement.  Nothing 
       contained in this Agreement shall be deemed to constitute the parties 
       partners with each other or any third party.

       10.12. Construction. 
       The term "Section" can refer to any single paragraph level found herein 
       or any collection of multiple paragraphs thereunder.

       10.13. Dispute Resolution.
       The parties recognize that disputes as to certain matters may from time 
       to time arise during the term of this Agreement which relate to either 
       party's rights and/or obligations hereunder.  It is the objective of the 
       parties to establish procedures to facilitate the resolution of disputes 
       arising under this Agreement in an expedient manner by mutual
       cooperation and without resort to litigation or arbitration.  The
       parties agree that prior to any litigation or arbitration concerning this
       Agreement, PD's president and Aurora's president will meet in person or
       by video-conferencing in a good faith effort to resolve any disputes
       concerning this Agreement. ***. 

       IN WITNESS WHEREOF, the parties have caused this Agreement to be executed
       by their duly authorized representatives.


WARNER-LAMBERT COMPANY                        AURORA BIOSCIENCES CORPORATION 

By:    /s/ Ronald M. Cresswell                By:    /s/  Timothy J. Rink
       -------------------------                     -------------------------

Name:  Prof. Ronald M. Cresswell              Name:  Dr. Timothy J. Rink
       -------------------------                     -------------------------

Title: Vice President and Chairman            Title: President, CEO and Chairman
       -------------------------                     ---------------------------

Date:  August 21, 1998                         Date: August 4, 1998
       -------------------------                     -------------------------
					


***Confidential Treatment Requested    20


<PAGE>     21

                               LIST OF EXHIBITS

***


EXHIBIT 1 - PAGE 1

***



EXHIBIT 2 - PAGE 1

***



***Confidential Treatment Requested    21



<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANICAL INFORMATION EXTRACTED FROM THE BALANCE
SHEET AT SEPTEMBER 30, 1998 (UNAUDITED) AND THE STATEMENT OF OPERATIONS FOR THE
NINE MONTHS ENDED SEPTEMER 30, 1998 (UNAUDITED) AND IS QUALIFIED IN ITS ENTIRETY
BY REFERENCE TO SUCH FORM 10-Q FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30,
1998.
</LEGEND>
       
<S>                             <C>
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               SEP-30-1998
<CASH>                                       8,660,441
<SECURITIES>                                23,161,905
<RECEIVABLES>                                4,558,618
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                            38,427,472
<PP&E>                                      13,709,781
<DEPRECIATION>                               2,776,054
<TOTAL-ASSETS>                              55,864,286
<CURRENT-LIABILITIES>                        9,206,690
<BONDS>                                              0
                                0
                                          0
<COMMON>                                        16,972
<OTHER-SE>                                  42,059,661
<TOTAL-LIABILITY-AND-EQUITY>                55,864,286
<SALES>                                              0
<TOTAL-REVENUES>                            18,192,197
<CGS>                                                0
<TOTAL-COSTS>                               16,086,172
<OTHER-EXPENSES>                            17,312,931
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                             481,443
<INCOME-PRETAX>                           (13,717,768)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                       (13,717,768)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                              (13,717,768)
<EPS-PRIMARY>                                   (0.85)
<EPS-DILUTED>                                   (0.85)
        

</TABLE>


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