CYPRESS BIOSCIENCE INC
S-3/A, 1996-05-02
BIOLOGICAL PRODUCTS, (NO DIAGNOSTIC SUBSTANCES)
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<PAGE>
   
      As filed with the Securities and Exchange Commission on May 2, 1996
                                                     Registration No. 333-01071
    
===============================================================================
                    SECURITIES AND EXCHANGE COMMISSION
                          WASHINGTON, D.C. 20549
                              _______________
   
                              AMENDMENT NO. 2
                                    TO
                                 FORM S-3
                          REGISTRATION STATEMENT
                                  UNDER
                        THE SECURITIES ACT OF 1933
                              _______________

                          CYPRESS BIOSCIENCE, INC.
          (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)
    
                 DELAWARE                           22-2389839
       (STATE OR OTHER JURISDICTION              (I.R.S. EMPLOYER
     OF INCORPORATION OR ORGANIZATION)         IDENTIFICATION NUMBER)

                        401 QUEEN ANNE AVENUE NORTH
                             SEATTLE, WA 98109
                              (206) 667-9242
        (ADDRESS, INCLUDING ZIP CODE AND TELEPHONE NUMBER, INCLUDING 
           AREA CODE, OF REGISTRANT'S PRINCIPAL EXECUTIVE OFFICES)
                              _______________
   
                              JAY D. KRANZLER
    VICE CHAIRMAN OF THE BOARD OF DIRECTORS AND CHIEF EXECUTIVE OFFICER
                          CYPRESS BIOSCIENCE, INC.
                        401 QUEEN ANNE AVENUE NORTH
                             SEATTLE, WA 98109
                              (206) 667-9242
         (NAME, ADDRESS, INCLUDING ZIP CODE AND TELEPHONE NUMBER, 
                INCLUDING AREA CODE, OF AGENT FOR SERVICE)
                              _______________
    
                                COPIES TO:

                          FREDERICK T. MUTO, ESQ.
                           COOLEY GODWARD CASTRO
                             HUDDLESON & TATUM
                     4365 EXECUTIVE DRIVE, SUITE 1100
                           SAN DIEGO, CA  92121
                              _______________

    APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC: from 
time to time after the effective date of this Registration Statement.

    If any of the securities being registered on this Form are being offered 
pursuant to dividend or interest reinvestment plans, please check the 
following box. / /

    If any of the securities being registered on this Form are to be offered 
on a delayed or continuous basis pursuant to Rule 415 under the Securities 
Act of 1933, other than securities offered only in connection with dividend 
or interest reinvestment plans, check the following box. /X/

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

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

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

                       CALCULATION OF REGISTRATION FEE
<TABLE>
<CAPTION>
==============================================================================================================
                                                                                PROPOSED
                                                             PROPOSED           MAXIMUM
                                                              MAXIMUM          AGGREGATE         AMOUNT OF
      TITLE OF EACH CLASS OF               AMOUNT TO       OFFERING PRICE       OFFERING        REGISTRATION
    SECURITIES TO BE REGISTERED          BE REGISTERED      PER SHARE(1)        PRICE(1)           FEE(2)
- --------------------------------------------------------------------------------------------------------------
<S>                                      <C>               <C>               <C>                <C>
Common Stock, $.02 par value . . . . .     8,920,701          $2.0625        $18,398,946.81       $6,799.64
==============================================================================================================
</TABLE>
(1) Estimated in accordance with Rule 457(c) solely for the purpose of
    computing the amount of the registration fee based on the average of the
    high and low prices of the Registrant's Common Stock as reported on the
    Nasdaq SmallCap Market on February 14, 1996, the date prior to the date
    this Registration Statement was originally filed.

(2) The registration fee was previously paid in connection with the
    initial filing of this Registration Statement.

    THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR 
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT 
SHALL FILE A FURTHER AMENDMENT THAT SPECIFICALLY STATES THAT THIS 
REGISTRATION STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH 
SECTION 8(a) OF THE SECURITIES ACT OF 1933 OR UNTIL THE REGISTRATION 
STATEMENT SHALL BECOME EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING 
PURSUANT TO SAID SECTION 8(a), MAY DETERMINE.
===============================================================================


<PAGE>

   
                SUBJECT TO COMPLETION, DATED MAY 2, 1996
    
PROSPECTUS

                               8,920,701 SHARES
   
                           CYPRESS BIOSCIENCE, INC.
                                 COMMON STOCK
    
   
    This Prospectus relates to 8,920,701 shares (the "Shares") of Common 
Stock, par value $.02 per share (the "Common Stock") of Cypress Bioscience, 
Inc. ("Cypress" or the "Company"). The Shares being offered hereby were 
acquired by certain stockholders of the Company (the "Selling Stockholders") 
in January 1996 at a per share sales price of $1.50. The Shares may be 
offered by the Selling Stockholder from time to time in transactions on the 
Nasdaq SmallCap Market, in privately negotiated transactions or a combination 
of such methods of sale, at fixed prices that may be changed, at market 
prices prevailing at the time of sale, at prices related to such prevailing 
market prices or at negotiated prices. The Selling Stockholders may effect 
such transactions by selling the Shares to or through broker-dealers, and 
such broker-dealers may receive compensation in the form of discounts, 
concessions or commissions from the Selling Stockholders or the purchasers of 
the Shares for whom such broker-dealers may act as agent or to whom they sell 
as principal or both (which compensation to a particular broker-dealer might 
be in excess of customary commissions). See "Selling Stockholders" and "Plan 
of Distribution."
    

    None of the proceeds from the sale of the Shares by the Selling 
Stockholders will be received by the Company. The Company has agreed to bear 
certain expenses (other than fees and expenses, if any, of counsel or other 
advisors to the Selling Stockholders) in connection with the registration of 
the Shares being offered by the Selling Stockholders. The Company has agreed 
to indemnify the Selling Stockholders against certain liabilities, including 
certain liabilities under the Securities Act of 1933, as amended (the 
"Securities Act"). See "Plan of Distribution."

   
    The Common Stock of the Company is traded on the Nasdaq SmallCap Market 
under the symbol "IMRE." The last reported sales price of the Company's 
Common Stock on the Nasdaq SmallCap Market on April 30, 1996 was $2.4375 per 
share."
    
                               _______________

           THE SHARES OFFERED HEREBY INVOLVE A HIGH DEGREE OF RISK.
SEE "RISK FACTORS" COMMENCING ON PAGE 5 FOR A DISCUSSION OF CERTAIN FACTORS 
THAT SHOULD BE CONSIDERED BY PROSPECTIVE PURCHASES OF THE SHARES OFFERED 
HEREBY.

                               _______________

         THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE
          SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES
         COMMISSION NOR HAS THE SECURITIES AND EXCHANGE COMMISSION OR
          ANY STATE SECURITIES COMMISSION PASSED UPON THE ACCURACY OR
             ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE
                       CONTRARY IS A CRIMINAL OFFENSE.

   
              THE DATE OF THIS PROSPECTUS IS MAY 2, 1996.
    

<PAGE>

    No person is authorized in connection with any offering made hereby to 
give any information or make any representation not contained or incorporated 
by reference in this Prospectus, and any information not contained or 
incorporated herein must not be relied upon as having been authorized by the 
Company. This Prospectus does not constitute an offer to sell, or a 
solicitation of an offer to buy, by any person in any jurisdiction in which 
it is unlawful for such person to make such offer or solicitation. Neither 
the delivery of this Prospectus at any time nor any sale made hereunder 
shall, under any circumstances, imply that the information herein is correct 
as of any date subsequent to the date hereof.

    Except for the historical information contained herein, the discussion in 
this Prospectus contains forward-looking statements that involve risks and 
uncertainties. The Company's actual results could differ materially from 
those discussed here. Factors that could cause or contribute to such 
differences include, but are not limited to, those discussed in the section 
entitled "Risk Factors," as well as those discussed elsewhere in this 
Prospectus.

                            AVAILABLE INFORMATION

     The Company is subject to the informational requirements of the 
Securities Exchange Act of 1934, as amended (the "Exchange Act"), and in 
accordance therewith files reports, proxy statements and other information 
with the Securities and Exchange Commission (the "Commission"). Such reports, 
proxy statements and other information can be inspected and copied at the 
public reference facilities maintained by the Commission at Room 1024, 450 
Fifth Street, N.W., Judiciary Plaza, Washington, D.C. 20549, and at the 
Commission's following Regional Offices: Chicago Regional Office, Suite 1400, 
Northwest Atrium Center, 500 West Madison Street, Chicago, Illinois 60661; 
and New York Regional Office, Seven World Trade Center, Suite 1300, New York, 
New York 10048. Copies of such material also can be obtained at prescribed 
rates from the Public Reference Section of the Commission at 450 Fifth 
Street, N.W., Judiciary Plaza, Washington, D.C. 20549.

    The Company has filed with the Commission a Registration Statement on 
Form S-3 under the Securities Act, with respect to the Shares being offered 
hereby. This Prospectus does not contain all of the information set forth in 
the Registration Statement, certain portions of which are omitted in 
accordance with the rules and regulations of the Commission. For further 
information pertaining to the Company and the Shares, reference is made to 
the Registration Statement and the exhibits and schedules thereto, which may 
be inspected without charge at, and copies thereof may be obtained at 
prescribed rates from, the office of the Commission at 450 Fifth Street, 
N.W., Judiciary Plaza, Washington, D.C. 20549.

    PROSORBA-Registered Trademark- column is a registered trademark of the 
Company. All other brand names or trademarks appearing in this Prospectus are 
the property of their respective holders.

               INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

    The Company's Annual Report on Form 10-K for the fiscal year ended 
December 31, 1995, the Company's Proxy Statement for the 1996 Annual Meeting 
of Stockholders filed on March 11, 1996 pursuant to Rule 14a-6 of the 
Exchange Act, the Company's Current Report on Form 8-K dated 

                                       3

<PAGE>

   
as of March 28, 1995, the Company's Current Report on Form 8-K dated as of 
November 22, 1995, the Company's Current Report on Form 8-K dated as of 
January 29, 1996, the Company's Current Report on Form 8-K dated as of March 
8, 1996, the Company's Current Report on Form 8-K dated as of April 1, 1996 
and the Company's Annual Report on Form 10-K/A for the fiscal year ended 
December 31, 1995 filed by the Company with the Commission are hereby 
incorporated by reference in this Prospectus except as superseded or modified 
herein. All documents filed by the Company with the Commission pursuant to 
Section 13(a), 13(c), 14 or 15(d) of the Exchange Act after the date of this 
Prospectus and prior to the termination of the offering shall be deemed to be 
incorporated by reference into this Prospectus and to be a part hereof from 
the date of filing of such documents. Any statement contained in any document 
incorporated or deemed to be incorporated by reference herein shall be deemed 
to be modified or superseded for purposes of this Prospectus to the extent 
that a statement contained herein or in any other subsequently filed document 
which also is or is deemed to be incorporated by reference herein modifies or 
supersedes such statement. Any such statement so modified or superseded shall 
not be deemed, except as modified or superseded, to constitute a part of this 
Prospectus.
    

    The Company will provide without charge to each person, including any 
beneficial owner of shares of Common Stock of the Company, to whom this 
Prospectus is delivered, upon written or oral request of such person, a copy 
of any and all of the documents that have been or may be incorporated by 
reference herein (other than exhibits to such documents which are not 
specifically incorporated by reference into such documents). Such requests 
should be directed to the Chief Financial Officer at the Company's principal 
executive offices at 401 Queen Anne Avenue North, Seattle, Washington 98109 
(telephone (206) 667-9242).

                                 THE COMPANY

   
    Cypress Bioscience, Inc. ("Cypress" or the "Company") was incorporated in 
1981 to research, develop, manufacture and market medical devices for the 
treatment and diagnosis of select immune-mediated diseases, transplantations 
and cancers. The Company's first product, the PROSORBA-Registered Trademark- 
column, a medical device, treats a patient's defective immune system so that 
it can more effectively respond to certain diseases. The Company received 
marketing approval from the U.S. Food and Drug Administration (the "FDA") in 
December 1987 to distribute the PROSORBA-Registered Trademark- column for 
treatment of idiopathic thrombocytopenic purpura ("ITP"), an immune-mediated 
bleeding disorder. Since 1987, the Company has had approximately $23 million 
of sales of the PROSORBA-Registered Trademark- column.
    

    In February 1994, the Company entered into a 10-year exclusive 
distribution agreement with Baxter Healthcare Corporation ("Baxter") granting 
distribution rights of its PROSORBA-Registered Trademark- column in the 
United States and Canada for the treatment of thrombocytopenia and the first 
right to negotiate for new PROSORBA-Registered Trademark- column indications. 
In March 1995, the two companies amended the agreement whereby Baxter, among 
other things, gave the Company the right to co-market with Baxter and 
relinquished its first right to negotiate for new PROSORBA-Registered 
Trademark- column indication.  On March 18, 1996, the Company and Baxter entered
into a termination agreement terminating the exclusive distribution agreement.
Under the termination agreement, effective May 1, 1996, the Company may, among
other things, sell its PROSORBA-Registered Trademark- column directly to 
customers who had previously purchased PROSORBA-Registered Trademark- columns
through Baxter, as well as directly to any other potential customers who wish to
purchase PROSORBA-Registered Trademark- columns. See "Risk Factors -- 
Exclusive Agreement With Baxter."


    In December 1995, Martin D. Cleary resigned as Chief Executive Officer 
and a member of the Board of Directors of the Company. Mr. Cleary's 
resignation was a result of the Company's determination that it would best be 
served by having senior management resident on the West Coast near the 
Company's principal executive offices and other operations. Because Mr. 
Cleary was unable to relocate from the East Coast, he agreed to resign as 
Chief Executive Officer and as a director. Also in December 1995, Harvey J. 
Hoyt resigned as Executive Vice President and a member of the Board of 
Directors of the Company. Dr. Hoyt's resignation was a result of the 
appointments of new members of senior management and the restructuring of the 
Company, which restructuring eliminated Dr. Hoyt's position. Jay D. Kranzler, 
M.D., Ph.D. was appointed as Chief

                                       4

<PAGE>

Executive Officer and Vice Chairman of the Board of Directors and DebbyJo 
Blank, M.D. was appointed as President, Chief Operating Officer and a member 
of the Board of Directors.

    The Company is in the process of developing a substantial restructuring 
plan. The restructuring plan is intended to reduce the Company's overhead and 
recurring costs by reducing the Company's work force and consolidating its 
two manufacturing facilities into one central manufacturing facility located 
in Redmond, Washington. By eliminating approximately 20 positions, the 
Company expects to realize an annual salary savings in excess of $1.0 
million. In addition, although the Company estimates it will incur 
approximately $1.0 million in capital expenditures associated with the 
consolidation of its manufacturing operations, the Company believes such 
consolidation will result in a reduction of overhead expenses.

     Furthermore, the restructuring plan includes relocating all of the 
Company's operations, except manufacturing, from Seattle, Washington to San 
Diego, California by the end of 1996. The Company believes that relocating 
its operations to San Diego, recognized as the fourth largest biotechnology 
center in the United States, will provide the Company with greater exposure 
within the industry and better position the Company to market its products. 
In addition, in the event the Company wishes to expand staffing, San Diego's 
highly skilled work force will provide significant resources from which the 
Company may draw upon to fill any future staffing needs. The restructuring is 
not yet completed and there can be no assurance that such a restructuring 
will be completed. Even if such a restructuring is completed, there can be no 
assurance that it will be successfully implemented.

    In December 1995, the Company completed an offering of $1,500,000 of 
Senior Convertible Debentures (the "Debentures") to certain accredited 
investors. In January 1996, the Company completed a private placement of 
8,540,702 shares of the Company's Common Stock (the "Private Placement") with 
certain accredited investors at a per share sales price of $1.50. Upon the 
closing of the Private Placement, the Debentures were automatically converted 
into 1,000,000 shares of Common Stock of the Company.

     Allen & Company, the Company's largest stockholder, purchased $500,000 
of the Debentures. Upon the closing of the Private Placement, the Debentures 
purchased by Allen & Company automatically converted into 333,333 shares of 
Common Stock of the Company.

     Allen & Company acted as a non-exclusive placement agent for the Company 
with respect to the Debenture Offering and the Private Placement, receiving a 
placement fee of 6% of the gross proceeds attributable to securities actually 
placed by Allen & Company. The Company paid Allen & Company a placement fee 
in the form of 20,000 shares of Common Stock of the Company in connection 
with the Debenture Offering and a cash fee of $225,000 in connection with the 
Private Placement.

    The Company was incorporated under the laws of the State of Delaware in 
1981. The Company's executive offices are located at 401 Queen Anne Avenue 
North Seattle, Washington, 98109-4517 and its telephone number is (206) 
298-9400.

                                 RISK FACTORS

    This Prospectus contains forward-looking statements within the meaning of
Section 27A of the Securities Act and Section 21E of the Exchange Act that 
involve risks and uncertainties.  The Company's actual results could differ 
materially from those projected in the forward-looking statements.  Factors 
that could cause or contribute to such differences include, but are not 
limited to, those discussed in this section, as well as those discuss in this 
Prospectus.  The following risk factors should be considered carefully in
addition to the other information contained in this prospectus before purchasing
the shares being offered hereby.

    NEED FOR ADDITIONAL CAPITAL. The Company is actively seeking 
opportunities to raise additional capital through the private equity market 
and corporate partners. Such capital would be used primarily to develop new 
and complete existing research and development activities, including funding 
clinical trials for rheumatoid arthritis and certain platelet disorders. The 
amount of capital required by the Company is primarily dependent upon the 
following factors: results of clinical trials, results of current research 
and development efforts, the FDA regulatory process, potential competitive 
and technological advances and levels of product sales. Because the Company 
is unable to predict the outcome of the previously noted factors, some of 
which are beyond the Company's control, the Company is unable to estimate, 
with certainty, its mid- to long-term total capital needs. There can be no 
assurance that the Company will be able to raise additional capital through 
the private equity market or corporate partnering transactions or that funds 
raised thereby will allow the Company to maintain its current and planned 
operations as provided herein. If the Company is unable to obtain additional 
financing, it may be required to delay, scale back or eliminate some or all 
of its research and development activities, to license to third parties 
technologies that the Company would otherwise seek to develop itself, to seek 
financing through the debt market at potentially higher costs to the Company 
and/or to seek additional methods of financing.

                                       5

<PAGE>

    HISTORY OF OPERATING LOSSES. The Company has operated at a loss since its 
formation in October 1981. In the years ended December 31, 1994 and 1995, the 
Company had revenues of $4,918,126 and $4,104,224 and net losses of 
$6,151,312 and $6,826,252, respectively. As of December 31, 1995, the Company 
had an accumulated deficit of $44,041,634. The ability of the Company to 
achieve profitability is dependent upon successful completion of anticipated 
clinical trials and obtaining FDA marketing approval of the 
PROSORBA-Registered Trademark- column for the treatment of additional 
diseases in a timely manner, among other factors. The Company would have to 
significantly scale back its plans, curtail clinical trials, and limit its 
present operations in order to become profitable or operate on a break-even 
basis if it does not receive marketing approval from the FDA for the 
PROSORBA-Registered Trademark- column for the treatment of diseases in 
addition to idiopathic thrombocytopenic purpura ("ITP"). There can be no 
assurance that the Company will meet applicable regulatory standards or 
successfully market its products to generate sufficient revenues to render 
the Company profitable.

    MANAGEMENT CHANGES; RESTRUCTURING PLAN; DEPENDENCE UPON KEY PERSONNEL. 
The Company has recently undergone changes in senior management and new 
management is in the process of developing and implementing a substantial 
restructuring plan. The restructuring plan has not been completed and there 
can be no assurance that it will be completed. Even if such a restructuring 
plan is completed, there can be no assurance that the restructuring will be 
successfully implemented. The Company's success is dependent upon certain key 
management and technical personnel, including the new senior management 
members. The loss of the services of any of these key employees could have a 
material adverse effect on the Company. The Company does not currently 
maintain any key employee insurance coverage. See "Management Changes and 
Pending Restructuring Plan."

    FDA APPROVAL AND REGULATIONS. The Company is currently planning to 
conduct a controlled clinical trial of the PROSORBA-Registered 
Trademark-column for treatment of rheumatoid arthritis. Although the FDA has 
approved the commercial sale of the PROSORBA-Registered Trademark- column for 
the treatment of ITP, there can be no assurance that current or future 
clinical trials will produce data satisfactory to the FDA to establish the 
effectiveness of the PROSORBA-Registered Trademark- column for treatment of 
diseases other than ITP, such as rheumatoid arthritis, transplantations and 
certain cancers, or that the FDA will approve the PROSORBA-Registered 
Trademark- column for treatment of such diseases in a timely manner, if at 
all.

    The PROSORBA-Registered Trademark- column is commercially distributed 
under a premarket approval ("PMA") application that was approved by the FDA 
in 1987. Changes to the product and its manufacturing process, and certain 
types of labeling changes must be approved by the FDA prior to 
implementation. The Company currently has one supplement to the PMA pending 
with the FDA for a labeling change dealing with the use of ancillary 
equipment during the use of the PROSORBA-Registered Trademark- column. The 
FDA has indicated to the Company that the PMA supplement would be approvable 
if certain additional information is provided. There can be no assurance that 
the Company will receive approval of its pending PMA supplement or any future 
PMA supplements will be approved by the FDA.

    Even if FDA approval is granted to market a product for treatment of a 
particular disease, subsequent discovery of previously unknown problems may 
result in restrictions on the product's

                                       6

<PAGE>

future use or withdrawal of the product from the market. In addition, any 
other products developed in the future will require clinical testing and FDA 
marketing approval before they can be commercially exploited in the United 
States. Such approval process is typically very lengthy and there is no 
assurance that approvals will be obtained.

    The manufacture and distribution of medical devices are subject to 
continuing FDA regulation. In addition to the requirement that the device be 
marketed only for its approved use, applicable law requires compliance with 
the FDA's good manufacturing practices ("GMP") regulations. Failure to comply 
with the GMP regulations or with other applicable legal requirements can lead 
to federal seizure of non-complying products, injunctive actions brought by 
the federal government, and potential criminal liability on the part of the 
Company and of the officers and employees of the Company who are responsible 
for the activities that lead to the violations.

    COMPETITIVE ENVIRONMENT; TECHNOLOGICAL CHANGE; EFFECTIVENESS OF PRODUCTS. 
The field of medical devices in general and the particular areas in which the 
Company will market its products are extremely competitive. In developing and 
marketing medical devices to treat immune-mediated diseases and cancers, the 
Company competes with other products, therapeutic techniques and treatments 
which are offered by national and international healthcare and pharmaceutical 
companies, many of which have greater marketing, human and financial 
resources than the Company.

    The immunological therapies market is characterized by rapid 
technological change and potential introductions of new products or 
therapies. To respond to these changes, the Company may be required to 
develop or purchase new products to protect its technology from obsolescence. 
There can be no assurance that the Company will be able to develop or obtain 
such products, or, if developed or obtained, that such products will be 
commercially viable. In addition, there can be no assurance that the 
Company's products will prove effective in the treatment of diseases other 
than ITP.

    DEPENDENCE ON THIRD PARTY ARRANGEMENTS. The Company's commercial sale of 
its proposed products and its future product development may be dependent 
upon entering into arrangements with corporate partners and other third 
parties for the development, marketing, distribution and/or manufacturing of 
products utilizing the Company's proprietary technology. While the Company is 
currently seeking collaborative research and development arrangements and 
joint venture opportunities with corporate sponsors and other partners, there 
can be no assurance that the Company will be successful in entering into such 
arrangements or joint ventures or that any such arrangements will prove to be 
successful.

    EXCLUSIVE AGREEMENT WITH BAXTER. In February 1994, the Company entered 
into a 10-year exclusive distribution agreement with Baxter Healthcare 
Corporation ("Baxter") granting to Baxter distribution rights of its 
PROSORBA-Registered Trademark- column in the United States and Canada for the 
treatment of thrombocytopenia and the first right to negotiate for new 
PROSORBA-Registered Trademark- column indications. The distribution agreement 
also contained certain "take-or-pay" and minimum purchase commitments. 
Baxter, at its own expense, was to provide sales and marketing support for 
the sale of the product

                                       7

<PAGE>

during the term of the agreement. Baxter assumed the Company's sales and 
distribution responsibilities in April 1994. The Company was to provide 
significant marketing and promotional support to Baxter for the first three 
years of the agreement. The Company no longer maintains a domestic sales 
force.

    The "take-or-pay" commitments and purchase minimums were primarily 
subject to the Company having FDA marketing approval for immune 
thrombocytopenic purpura and the lack of any new significant competitive 
technology being introduced before October 1995 to the thrombocytopenia 
therapy marketplace. The Company received a response from the FDA in January 
1995 to a PMA supplement filed in March 1993 requesting the name of the 
Company's approved indication be changed from idiopathic thrombocytopenic 
purpura to immune thrombocytopenic purpura. The request was made by the 
Company as it believes the two names are used interchangeably by the medical 
community. The FDA's response denied the Company's request for such a change.

    As a result of the FDA action, in February 1995, Baxter exercised its 
right to re-negotiate the minimum purchase commitments. In March 1995, the 
two companies amended the agreement whereby Baxter: (a) made a take-or-pay 
payment for the first sales year of $3.0 million on March 31, 1995 compared 
to the original $3.5 million due, (b) agreed to purchase $1.0 million of 
product during the second quarter of 1995, (c) released the Company from its 
obligation to provide marketing and promotional support for the second and 
third years of the agreement, (d) gave the Company the right to co-market 
with Baxter, (e) relinquished its first right to negotiate for new 
PROSORBA-Registered Trademark- column indications, and (f) agreed under 
certain circumstances to provide advance payments to the Company for Baxter's 
1996 purchases. The Company agreed to eliminate purchase minimums and the 
take-or-pay concept included in the original agreement and has freed Baxter 
to pursue competing thrombocytopenia therapies.

    On March 18, 1996, the Company and Baxter entered into a termination 
agreement terminating the exclusive distribution agreement. Under the 
termination agreement, effective May 1, 1996, the Company may, among other 
things, sell its PROSORBA-Registered Trademark- column directly to customers 
who had previously purchased PROSORBA-Registered Trademark- columns through 
Baxter as well as to any other potential customers who wish to purchase 
PROSORBA-Registered Trademark- columns.

    No assurance can be given that prior to May 1, 1996, Baxter will maximize 
the Company's potential sales in North America, or that Baxter will be 
successful in marketing the Company's PROSORBA-Registered Trademark- column. 
There can be no assurances that the Company will be able to develop a sales 
force by May 1, 1996, if at all, to sell its PROSORBA-Registered Trademark- 
column directly to customers who previously purchased PROSORBA-Registered 
Trademark- columns from Baxter or to any other potential customers who 
wish to purchase PROSORBA-Registered Trademark- columns. In addition, even if 
the Company can establish a sales force for its PROSORBA-Registered 
Trademark- column, there can be no assurance that the Company will be 
successful in selling its PROSORBA-Registered Trademark- columns directly to 
any new customers or to any customers who previously purchased 
PROSORBA-Registered Trademark- columns through Baxter.

    UNCERTAINTY OF PATENT PROTECTION AND CLAIMS TO TECHNOLOGY. The Company 
currently holds nine United States and four foreign patents relating to its 
technology and has also filed other patent applications. In addition, the 
Company has an exclusive license for a U.S. patent for a genetic screening 
test to predict which rheumatoid arthritis patients will develop severe 
disease. Neither the protection afforded by these patents nor their 
enforceability can be assured. Furthermore, there can be no assurance that 
additional patents will be obtained either in the United States or in foreign 
jurisdictions or that, if issued, such additional patents will provide 
sufficient protection to the Company's technology or be of commercial benefit 
to the Company. Insofar as the Company relies on trade secrets and unpatented 
proprietary know-how, there can be no assurance that others will not 
independently develop similar technology or that secrecy will not be 

                                       8

<PAGE>

breached. There can be no assurance that the Company will be able to develop 
further technological innovations.

    Others have filed applications for, or have been issued, patents and may 
obtain additional patents and other proprietary rights relating to products 
or processes competitive with those of the Company. The scope and validity of 
such patents is presently unknown. If existing or future patents are 
challenged in litigation or interference proceedings, the Company may become 
subject to significant liabilities to third parties or be required to seek 
licenses from third parties. There can be no assurance that such licenses 
would be available or, if available, obtainable on acceptable terms.

    In November 1995, a complaint was filed with the United States District 
Court, Northern District of California, claiming that the Company's 
PROSORBA-Registered Trademark- column allegedly infringes a patent issued to 
David S. Terman, M.D. which patent subsequently was assigned in July 1993 to 
DTER-ENT, Inc., a California corporation. The Company first received a notice 
of a claim of infringement from DTER-ENT, Inc. in July 1993. Although the 
Company intends to vigorously contest the claim, there can be no assurances 
that the Company will be successful.

    In addition, various scientific personnel of the Company were previously 
associated with non-profit research or education institutions that typically 
require researchers to execute agreements giving such institutions broad 
rights to inventions created or developed during the period that the 
scientist is associated with such institution. Dr. Frank R. Jones, Chairman 
of the Board and Chief Scientific Officer of the Company, has been a party to 
such agreements in the past. While no such institution has to date asserted 
rights to the Company's technology, such assertions may be made in the 
future, and if made, there can be no assurances that the Company will be 
successful in any such litigation.

    CONCENTRATION OF OWNERSHIP. Allen & Company Incorporated beneficially 
owns approximately 18.14% of the outstanding Common Stock of the Company and 
is the largest stockholder of the Company.

    SALES AND MARKETING. In addition to marketing through Baxter, the Company 
also conducts limited marketing of the PROSORBA-Registered Trademark- column 
outside the United States through foreign distributors. Sales to foreign 
distributors have not been material to the Company's results from operations. 
There can be no assurance that such domestic sales efforts or foreign sales 
arrangements will become material to the Company's results of operations.

   
    RECOVERABILITY OF ENDING INVENTORIES. As of December 31, 1995, the 
Company's ending inventory balances consisted of $513,883 of raw materials, 
$557,222 of work in progress and $77,401 of finished goods. In order to 
recover such ending inventory balances, the Company would have to sell 
approximately 20% more PROSORBA-Registered Trademark- column units to 
customers than that amount sold to customers by Baxter during 1995. Such 
increase represents approximately 60% of the total sales made by the 
Company's sales force in fiscal year 1993 prior to entering into the Baxter 
agreement. See "-- Exclusive Agreement with Baxter." As a result of the 
termination of the Baxter Agreement, the Company is actively seeking to 
establish a sales force to sell the PROSORBA-Registered Trademark- column 
directly to customers who previously purchased PROSORBA-Registered Trademark- 
columns from Baxter and to other potential customers who wish to purchase 
PROSORBA-Registered Trademark- columns directly from the Company. Although 
there can be no assurances that the Company's sales force, when and if 
established, will be successful in selling the Company's product, the Company 
believes, based upon historical sales figures, that it can generate 
sufficient sales to recover the ending inventory balances described above 
with a sales force of between 5 and 7 salespersons dedicated solely to 
selling the Company's PROSORBA-Registered Trademark- column. In addition, on 
May 1, 1996, the Company increased the sales price of the PROSORBA-Registered 
Trademark- columns to be sold directly to customers by approximately 9%. This 
is the first such price increase implemented by the Company since January 1, 
1994. The Company believes that such price increase reflects a nominal price 
increase for a medical device for the period covered by such increase. 
However, there can be no assurance that the Company will be successful in 
selling the PROSORBA-Registered Trademark- column at the increased price, if 
at all. 
    

    INSURANCE REIMBURSEMENT. Successful commercialization of a new medical 
product, such as the PROSORBA-Registered Trademark- column depends, in part, 
on reimbursement by public and private health insurers to health care 
providers for use of such product. The availability of such reimbursement is
subject to a variety of factors, many of which could affect the Company as it
commercializes use of the PROSORBA-Registered Trademark- column. Although the
Company has been generally successful in assisting health care providers in
arranging reimbursement for the use of the PROSORBA-Registered Trademark- column
in the treatment of ITP, there can no assurance that public and private insurers
will continue to reimburse for the use of the PROSORBA-Registered Trademark-
column.

                                       9

<PAGE>

    UNCERTAINTY OF HEALTH CARE REFORM. There are widespread efforts to 
control health care costs in the U.S. and worldwide. Various federal and 
state legislative initiatives regarding health care reform and similar issues 
continue to be at the forefront of social and political discussion. These 
trends may lead third-party payors to decline or limit reimbursement for the 
Company's product, which could negatively impact the pricing and 
profitability of, or demand for, the Company's product. The Company believes 
that government and private efforts to contain or reduce health care costs 
are likely to continue. There can be no assurance concerning the likelihood 
that any such legislative or regulatory initiative will be enacted, or market 
reform initiated, or that, if enacted such reform or initiative will not 
result in a material adverse impact on the business, financial condition or 
results of operations of the Company.

    PRODUCT LIABILITY. The use of the PROSORBA-Registered Trademark- column 
involves the possibility of adverse effects occurring to end-users that could 
expose the Company to product liability claims. The Company believes that its 
product liability insurance coverage is adequate in light of the Company's 
business. However, although the Company currently maintains product liability 
insurance coverage, there can be no assurance that such coverage or any 
increased amount of coverage will be adequate to protect the Company and 
there can be no assurance that the Company will have sufficient resources to 
pay any liability resulting from such a claim.

    POSSIBLE VOLATILITY OF STOCK PRICE; ABSENCE OF DIVIDENDS. There has been 
a history of significant volatility in the market prices of securities of 
biotechnology companies, including the Company's Common Stock. Factors such 
as announcements by the Company or others of technological innovations, 
results of clinical trials, new commercial products, regulatory approvals or 
proprietary rights developments, coverage decisions by third-party payers for 
therapies and public concerns regarding the safety and other implications of 
biotechnology all may have a significant impact on the Company's business and 
market price of the Company's Common Stock. No dividends have been paid on 
the Common Stock to date, and the Company does not anticipate paying cash 
dividends on the Common Stock in the foreseeable future.

    HAZARDOUS MATERIAL. The Company's research and development programs 
involve the controlled use of biohazard materials such as viruses, including 
the HIV virus that causes AIDS. Although the Company believes that its safety 
procedures for handling such materials comply with the standards prescribed 
by state and federal regulations, the risk of accidental contamination or 
injury from these materials cannot be completely eliminated. In the event of 
such an accident, the Company could be held liable for any damages that 
result, and any such liability could exceed the resources of the Company.

    LIMITATION OF NET OPERATING LOSS CARRYFORWARDS. The Company's sale of 
Common Stock in November 1990, September 1991, April 1993, and January 1996 
when taken together with prior issuances, caused the limitation of Section 
382 of the Internal Revenue Code of 1986, as amended (the "Internal Revenue 
Code"), to be applicable. This limitation will allow the Company to use only 
a portion of the net operating loss carryforwards to offset future taxable
income, if any, for federal income tax purposes. Based on the limitations of
Section 382 and before consideration of the effect of the sale of securities
offered hereby, the Company may be allowed to use no more than approximately
$3,700,000 of such losses each year to reduce taxable income, if any. To the
extent not utilized by the Company, unused losses will

                                       10

<PAGE>

carry forward subject to the limitations to offset future taxable income, if 
any, until such unused losses expire. All unused net operating losses will 
expire 15 years after any year in which they were generated. The years in 
which such expiration will take place range from 1998-2010.

                             SELLING STOCKHOLDERS

    The Selling Stockholders represented in their purchase agreements that 
they were acquiring the Shares for investment and with no present intention 
of distributing the Shares. In recognition of the fact that the Selling 
Stockholders, even though purchasing the Shares without a view to distribute, 
may wish to be legally permitted to sell the Shares when each deems 
appropriate, the Company has filed with the Commission a Registration 
Statement on Form S-3, which this Prospectus forms a part, with respect to, 
among other things, the resale of the Shares from time to time at prevailing 
prices in the over-the-counter market or in privately-negotiated transactions 
and has agreed to prepare and file such amendments and supplements to the 
Registration Statement as may be necessary to keep the Registration Statement 
effective until all Shares offered hereby have been sold pursuant thereto or 
until such Shares are no longer, by reason of Rule 144 under the Securities 
Act or any other rule of similar effect, required to be registered for the 
sale thereof by the Selling Stockholders.

    The following table sets forth the name of the Selling Stockholders, the 
number of Shares beneficially owned by each Selling Stockholder as of January 
31, 1996 and the number of Shares which may be offered pursuant to this 
Prospectus. This information is based upon information provided to the 
Company by the Selling Stockholders. Because the Selling Stockholders may 
offer all, some or none of their shares of Common Stock, no definitive 
estimate as to the number of shares thereof that will be held by the Selling 
Stockholders after such offering can be provided.

<TABLE>
<CAPTION>

                                 SHARES BENEFICIALLY           NUMBER OF         SHARES BENEFICIALLY
                                    OWNED PRIOR TO            SHARES BEING           OWNED AFTER
                                      OFFERING(1)               OFFERED            OFFERING(1)(3)
     NAME OF                    ---------------------         ------------      ---------------------
SELLING STOCKHOLDERS            NUMBER     PERCENT(2)            NUMBER          NUMBER    PERCENT(2)
- --------------------           ---------   ----------         ------------      --------   ----------
<S>                            <C>         <C>                <C>               <C>        <C>
 A. Brean Murray                 50,000       .18%                50,000            0         0%
 Allen, Susan                   630,119      2.23%               166,667        463,452    1.64%
 Apollo Medical Partners        100,000       .35%               100,000            0         0%
 Aries Domestic Fund, L.P.      896,666      3.17%               866,666         30,000      .11%
 The Aries Trust                894,166      3.16%               866,666         27,500      .10%
 Barlow, Gordon                  20,000       .07%                20,000            0         0%
 Berrard, Steve                 333,334      1.18%               333,334            0         0%
 Binder, Richard                 50,000       .18%                50,000            0         0%
 Bollag, Michael                100,000       .35%               100,000            0         0%
 Cantor, Michael                 66,667       .24%                66,667            0         0%
 Capotorto, Vito                 20,000       .07%                20,000            0         0%
 Chez, Ronald IRA #2             40,000       .14%                40,000            0         0%
 Cless, Gerhard                 340,000      1.20%               340,000            0         0%

</TABLE>

                                       11

<PAGE>

<TABLE>
<CAPTION>

                                SHARES BENEFICIALLY            NUMBER OF        SHARES BENEFICIALLY
                                   OWNED PRIOR TO            SHARES BEING           OWNED AFTER
                                     OFFERING(1)                OFFERED            OFFERING(1)(3)
     NAME OF                    --------------------         ------------       -------------------
SELLING STOCKHOLDERS            NUMBER    PERCENT(2)            NUMBER          NUMBER   PERCENT(2)
- --------------------            ------    ----------            ------          ------   ----------
<S>                            <C>         <C>             <C>                 <C>         <C>
 Comitor, Loren                    5,000     .02%               5,000              0         0%
 Courcoux Bouvet (5)              35,000     .12%              20,000           15,000      .05%
 Delaware Fund-
    Emerging Growth               52,933     .19%              52,933              0         0%
 Delaware Fund-Trend           1,280,400    4.53%           1,280,400              0         0%
 DeVries, Walter                  66,000     .23%              50,000           16,000      .06%
 Diners Fugazy Travel and
    Incentive Ltd Profit
    Sharing Plan                  40,000     .14%              40,000              0         0%
 Doherty & Co.                   135,000     .48%             100,000           35,000      .12%
 Drobny Fischer Partnership      234,000     .83%             234,000              0         0%
 Drueke, Paul C.                  25,000     .09%              25,000              0         0%
 The Pharmaceutical/Medical
    Technology Fund, LP          140,000      50%             140,000              0         0%
 Eisen, Nathan & Rose             33,333     .12%              33,333              0         0%
 Emerge Capital (6)               40,000     .14%              40,000              0         0%
 Foisie, Robert A.               133,333     .47%             133,333              0         0%
 Garbelmann, Wolgang
    & Barbara                     20,000     .07%              20,000              0         0%
 Gelber, Howard                   15,000     .05%              15,000              0         0%
 Goby, Jeffrey                    20,000     .07%              20,000              0         0%
 Gold, Arthur                     10,000     .04%              10,000              0         0%
 Goldstick, Phillip               34,000     .12%              34,000              0         0%
 Gonsky, Sharon dba SDG
    Associates                    40,000     .14%              40,000              0         0%
 Gordon Barlow Design PP&T        20,000     .07%              20,000              0         0%
 Goulding, Randall                25,184     .09%              25,184              0         0%
 Goulding, Richard                28,700     .10%              28,700              0         0%
 Green, Dr. Richard               14,000     .05%              14,000              0         0%
 Hakeem, James & Jacklyn          22,000     .08%              17,000            5,000      .02%
 Hakeem, Robert & Jaynie          26,600     .09%              17,000            9,600      .03%
 Hanosh, James J., Jr.            40,623     .14%              16,667           23,956      .08%
 Hanosh, James J.                 38,667     .14%              36,667            2,000        *
 Hirsch, Richard L.               33,333     .12%              33,333              0         0%
 Holmes, James and Donna          10,000     .04%              10,000              0         0%
 Huizenga, Wayne                 333,333    1.18%             333,333              0         0%
 Incavo, Noel                     10,000     .04%              10,000              0         0%
 John F. Northway Trust           87,000     .31%              67,000           20,000      .07%
 John Z. Kosowski Trust           30,000     .11%              30,000              0         0%
 Judge, Jack                      33,333     .12%              33,333              0         0%
 Kaiser, Gary R.                  72,500     .26%              50,000           22,500      .08%
 Kaspar III, Charles J.           31,667     .11%              17,000           14,667      .05%
 Kaufmann, Dr. Regina             16,700     .06%              16,700              0         0%
 Kelabe Investment Corp. (5)      10,000     .04%              10,000              0         0%
 Kranzler, Leonard, M.D.          10,000     .04%              10,000              0         0%
 Kranzler, Moses                  10,000     .04%              10,000              0         0%
 Kushnir, Richard                 30,000     .11%              30,000              0         0%
 Laven, Alan                      10,000     .04%              10,000              0         0%
 Lehrer, Benjamin                 16,667     .06%              16,667              0         0%
 Levy, Steve                      80,000     .28%              80,000              0         0%
 Liss, Arthur                     10,000     .04%              10,000              0         0%
 Mackie, Robert                   33,334     .12%              33,334              0         0%
 Mark, Rueben                     66,667     .24%              66,667              0         0%
 McLaren, James I.                16,667     .06%              16,667              0         0%
 MDB Capital Corporation          33,333     .12%              33,333              0         0%

</TABLE>

                                       12

<PAGE>

<TABLE>
<CAPTION>

                                 SHARES BENEFICIALLY            NUMBER OF        SHARES BENEFICIALLY
                                    OWNED PRIOR TO             SHARES BEING          OWNED AFTER
                                      OFFERING(1)                OFFERED           OFFERING(1)(3)
     NAME OF                     --------------------         ------------       -------------------
SELLING STOCKHOLDERS             NUMBER    PERCENT(2)            NUMBER          NUMBER   PERCENT(2)
- --------------------             ------    ----------            ------          ------   ----------
<S>                             <C>        <C>                <C>                <C>      <C>
 Mizebourne Investment Corp.     13,333       .05%               10,000           3,333         *
 Morgenstern, J. Michael, M.D.   10,000       .04%               10,000             0          0%
 Murdoch & Company              250,000       .88%              250,000             0          0%
 Nagorsky, Sy                    10,000       .04%               10,000             0          0%
 Nordruk Partners
    Investment Co.               70,000       .25%               50,000          20,000       .07%
 Olshansky, Melvin               10,000       .04%               10,000             0          0%
 Olson, Arthur                   20,000       .07%               20,000             0          0%
 Pritikin, Mark                   8,000       .03%                5,000           3,000         *
 Proper Service PP&T             10,000       .04%               10,000             0          0%
 Provezano, Annette              15,000       .05%               15,000             0          0%
 Quagliata, Franco & Laura(7)   120,709       .43%               70,000          50,709      .18%
 Redlich, Alon & Cindy           10,000       .04%               10,000             0          0%
 Renov, Kalman & Ruki O.        166,667       .59%              166,667             0          0%
 Rice Asset Management          200,000       .71%              200,000             0          0%
 Richard Goulding
    Pension Plan                 16,700       .06%               16,700             0          0%
 Rochon, Richard C.             133,333       .47%              133,333             0          0%
 Rosenberg, Gregg                 8,000       .03%                8,000             0          0%
 Rosenberg, Stacey                8,000       .03%                8,000             0          0%
 Rosin, Joe                      16,700       .06%               16,700             0          0%
 Sadosky, Andrew                 16,000       .06%               16,000             0          0%
 Samisa Investment Corp.         40,000       .14%               40,000             0          0%
 Schachter, Jerome               20,000       .07%               20,000             0          0%
 Schmidt, Karen                  30,000       .11%               30,000             0          0%
 Scott Partners                  50,000       .18%               50,000             0          0%
 Seminer, Scott                   8,350       .03%                8,350             0          0%
 Shapiro, E. Donald              50,000       .18%               50,000             0          0%
 Sherman, Lawrence               10,000       .04%               10,000             0          0%
 Sherman, Steven A.              10,000       .04%               10,000             0          0%
 Shiman, Stewart                150,000       .53%              150,000             0          0%
 Siciliano, Michael              20,000       .07%               20,000             0          0%
 Simons, Howard "Buzz"           84,000       .30%               84,000             0          0%
 Sirazi, Semir                   20,000       .07%               20,000             0          0%
 Stahler, Alan & Esther         166,667       .59%              166,667             0          0%
 Strattman, James K.
    & Julie M.                  100,000       .35%              100,000             0          0%
 Strattman, Robert A.
    & Joan F.                    40,133       .14%               33,333           6,800       .02%
 Thomas A. Petrovito Trust       30,000       .11%               30,000             0          0%
 Venturetek, L. P.              333,333      1.18%              333,333             0          0%
 Vernon, Elliott                 16,667       .06%               16,667             0          0%
 Vitali Maritime Corp.           31,500       .11%               30,000           1,500         *
 Weingrad, Michael               30,000       .11%               30,000             0          0%
 Weisburg, Burton                10,000       .04%               10,000             0          0%
 Wienckowski, Dr. Thomas         16,700       .06%               16,700             0          0%

</TABLE>

                                       13

<PAGE>

<TABLE>
<CAPTION>

                                 SHARES BENEFICIALLY            NUMBER OF        SHARES BENEFICIALLY
                                    OWNED PRIOR TO            SHARES BEING           OWNED AFTER
                                     OFFERING(1)                 OFFERED            OFFERING(1)(3)
     NAME OF                     --------------------         ------------       -------------------
SELLING STOCKHOLDERS             NUMBER    PERCENT(2)            NUMBER          NUMBER   PERCENT(2)
- --------------------             ------    ----------            ------          ------   ----------
<S>                              <C>       <C>                <C>                <C>      <C>
 Wierenga, Pete                  84,200       .30%               50,000          34,200      .12%
 Wilfam Ltd.                     40,000       .14%               40,000             0         0%
 Wolff, Joel                     66,667       .24%               66,667             0         0%
 Wood, Kenton E.                 20,000       .07%               20,000             0         0%
 Yahav, Yigal                    34,000       .12%               34,000             0         0%


*  Less than .01%

</TABLE>

(1) Unless otherwise indicated below, the persons named in the
    table have sole voting and investment power with respect to
    all shares beneficially owned by them, subject to community
    property laws where applicable.

(2) Applicable percentage of ownership is based on 28,279,297
    shares of Common Stock of the Company outstanding on
    January 31, 1996, adjusted as required by rules promulgated
    by the Commission.

(3) Assumes the sale of all shares offered hereby.

(4) Includes outstanding warrants to purchase 1,060,590 shares of
    Common Stock of the Company (of which 760,590 shares are
    purchasable for $2.50 per share and 300,000 shares are
    purchasable for $2.875 per share).

(5) Shares are held in the name of Republic New York Securities, as
    custodian of the shares and for the benefit of the above listed
    parties.

(6) Shares are held in the name of Farbank & Co., as custodian of the
    shares and for the benefit of the above listed party.

(7) Includes outstanding options to purchase 20,000 shares at an
    exercise price of $2.125 per share and options to purchase 26,666
    shares at an exercise price of $3.75 per share.


                             PLAN OF DISTRIBUTION

    The Company has been advised that the Selling Stockholders or pledgees, 
donees, tranferees of or other successors in interest to the Selling 
Stockholders may sell Shares from time to time in transactions on the Nasdaq 
SmallCap Market, in privately negotiated transactions or a combination of 
such methods of sale, at fixed prices which may be changed, at market prices 
prevailing at the time of sale, at prices related to such prevailing market 
prices or at negotiated prices. The Selling Stockholders may effect such 
transactions by selling the Shares to or through broker-dealers, and such 
broker-dealers may receive compensation in the form of discounts, concession 
or commissions from the Selling Stockholders or the purchasers of the Shares 
for whom such broker-dealers may act as agent or to whom they sell as 
principal, or both (which compensation to a particular broker-dealer might be 
in excess of customary commission).

    At any time a particular offer of Shares is made, to the extent required, 
a supplemental Prospectus will be distributed which will set forth the number 
of shares offered and the terms of the offering including the names or names 
of any underwriters, dealers or agents, the purchase price paid by any 
underwriter for the Shares purchased from the Selling Stockholders, any 
discounts, commission and other items constituting compensation from the 
Selling Stockholders and any discounts, concessions or commissions allowed or 
reallowed or paid to dealers.

    The Selling Stockholders and any broker-dealers who act in connection 
with the sale of Shares hereunder may be deemed to be "underwriters" as that 
term is defined in the Securities Act, and any commissions received by them 
and profit on any resale of the Shares as principal might be deemed to be 
underwriting discounts and commissions under the Securities Act.

    Any or all of the sales or other transactions involving the Shares 
described above, whether effected by the Selling Stockholders, any 
broker-dealer or others, may be made pursuant

                                       14

<PAGE>

to this Prospectus. In addition, any Shares that qualify for sale pursuant to 
Rule 144 under the Act may be sold under Rule 144 rather than pursuant to 
this Prospectus.

    In order to comply with the securities laws of certain states, if 
applicable, the Shares may be sold in such jurisdictions only through 
registered or licensed brokers or dealers. In addition, in certain states the 
Shares may not be sold unless they have been registered or qualified for sale 
or an exemption from registration or qualification requirements is available 
and is complied with.

    Under applicable rules and regulations under the Exchange Act, any person 
engaged in the distribution of the Shares may not simultaneously engage in 
market making activities with respect to IMRE Common Stock for a period of 
two business days prior to the commencement of such distribution. In addition 
and without limiting the foregoing, the Selling Stockholders will be subject 
to applicable provisions of the Exchange Act and the rules and regulations 
thereunder, including without limitation, Rules 10b-6 and 10b-7, which 
provisions may limit the timing of purchases and sales of shares of the 
Shares by the Selling Stockholders.

    All costs associated with the shares being offered hereunder will be paid 
by the Company.

    The Company and the Selling Stockholders may agree to indemnify certain 
persons including broker-dealers or others, against certain liabilities in 
connection with any offering of the Shares, including liabilities under the 
Securities Act.

                                LEGAL MATTERS

    The validity of the issuance of the Shares will be passed upon for the 
Company by Cooley Godward Castro Huddleson & Tatum, San Diego, California 
("Cooley Godward").

                                   EXPERTS
   
    The consolidated financial statements of Cypress Bioscience, Inc. 
incorporated by reference from Cypress Bioscience, Inc.'s 1995 Annual Report 
(Form 10-K) as of December 31, 1995 and 1994 and for the years then ended, 
have been audited by Ernst & Young LLP, independent auditors, as set forth in 
their report thereon included therein and incorporated herein by reference. 
Such consolidated financial statements are incorporated herein by reference 
in reliance upon such report given upon the authority of such firm as experts 
in accounting and auditing.
    

   
     The consolidated statements of operations, cash flows and stockholders' 
equity of Cypress Bioscience, Inc. for the year ended December 31, 1993, 
incorporated by reference in this Registration Statement, have been 
incorporated herein in reliance on the report of Coopers & Lybrand L.L.P., 
independent accountants, given on the authority of that firm as experts in 
accounting and auditing.
    

                                       15

<PAGE>
                                    PART II

                    INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 14.  OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION

   The following table sets forth all expenses payable by the Registrant in 
connection with the sale of the Common Stock being registered. All the 
amounts shown are estimates except for the SEC registration fee and the NASD 
filing fee.

              SEC Registration fee......................     $ 6,800
              Nasdaq SmallCap Market Listing Fee........         -0-
              Legal fees and expenses...................       7,500
              Blue sky qualification fees and expenses..       2,500
              Accounting fees and expenses..............       5,000
              Printing and engraving expenses...........       5,000
              Miscellaneous.............................       5,000
                                                             -------
                   Total................................     $31,800
                                                             =======

ITEM 15.  INDEMNIFICATION OF OFFICERS AND DIRECTORS.

    Under Section 145 of the Delaware General Corporation Law (the "DGCL"), 
the Registrant has broad powers to indemnify its Directors and officers 
against liabilities they may incur in such capacities, including liabilities 
under the Securities Act of 1933, as amended (the "Securities Act").

    The Registrant's Certificate of Incorporation and By-laws include 
provisions to (i) eliminate the personal liability of its directors for 
monetary damages resulting from breaches of their fiduciary duty to the 
extent permitted by Section 102(b)(7) of the DGCL and (ii) require the 
Registrant to indemnify its Directors and officers to the fullest extent 
permitted by applicable law, including circumstances in which indemnification 
is otherwise discretionary. Pursuant to Section 145 of the DGCL, a 
corporation generally has the power to indemnify its present and former 
directors, officers, employees and agents against expenses incurred by them 
in connection with any suit to which they are or are threatened to be made, a 
party by reason of their serving in such positions so long as they acted in 
good faith and in a manner they reasonably believed to be in or not opposed 
to, the best interests of the corporation and with respect to any criminal 
action, they had no reasonable cause to believe their conduct was unlawful. 
The Registrant believes that these provisions are necessary to attract and 
retain qualified persons as Directors and officers. These provisions do not 
eliminate the Directors' or officers' duty of care, and, in appropriate 
circumstances, equitable remedies such as injunctive or other forms of 
non-monetary relief will remain available under the DGCL. In addition, each 
Director will continue to be subject to

                                      II-1

<PAGE>

liability pursuant to Section 174 of the DGCL, for breach of the Director's 
duty of loyalty to the Registrant, for acts or omissions not in good faith or 
involving intentional misconduct, for knowing violations of law, for acts or 
omissions that the Director believes to be contrary to the best interests of 
the Registrant or its stockholders, for any transaction from which the 
Director derived an improper personal benefit, for acts or omissions 
involving a reckless disregard for the Director's duty to the Registrant or 
its stockholders when the Director was aware or should have been aware of a 
risk of serious injury to the Registrant or its stockholders, for acts or 
omission that constitute an unexcused pattern of inattention that amounts to 
an abdication of the Director's duty to the Registrant or its stockholders, 
for improper transactions between the Director and the Registrant and for 
improper loans to Directors and officers. The provision also does not affect 
a Director's responsibilities under any other law, such as the federal 
securities law or state or federal environmental laws.

    The Registrant has entered into a letter agreement with a certain 
executive officer whereby the Registrant has agreed to pay for expenses 
(including attorney's fees) incurred by such executive officer in connection 
with an ongoing SEC inquiry in advance of any final disposition of such 
inquiry. In the event it is ultimately determined that such executive officer
is not entitled to indemnification under the terms of the Registrant's Bylaws
or other applicable laws or regulations such executive officer is obligated to
repay all amounts advanced by the Registrant on such executive officer's behalf.

    The Registrant has an insurance policy covering the officers and 
Directors of the Registrant with respect to certain liabilities, including 
liabilities arising under the Securities Act or otherwise.

ITEM 16.  EXHIBITS

    EXHIBIT
    NUMBER                       DESCRIPTION OF DOCUMENT
    ------
      5.1       Opinion of Cooley Godward Castro Huddleson & Tatum

     23.1       Consent of Ernst & Young LLP, Independent Auditors

     23.2       Consent of Coopers & Lybrand L.L.P., Independent Accountants


                                      II-2

<PAGE>

     23.3       Consent of Cooley Godward Castro Huddleson & Tatum.
                Reference is made to Exhibit 5.1

     24.1       Power of Attorney. Reference is made to page II-6.

- ------------------

ITEM 17.  UNDERTAKINGS.

    Insofar as indemnification for liabilities arising under the Act may be 
permitted to directors, officers and controlling persons of the registrant 
pursuant to provisions described in Item 15 or otherwise, the registrant has 
been advised that in the opinion of the Commission such indemnification is 
against public policy as expressed in the Act and is, therefore, 
unenforceable. In the event that a claim for indemnification against such 
liabilities (other than the payment by the registrant of expenses incurred or 
paid by a director, officer or controlling person of the registrant in the 
successful defense of any action, suit or proceeding) is asserted by such 
director, officer or controlling person in connection with the securities 
being registered, the registrant will, unless in the opinion of its counsel 
the matter has been settled by controlling precedent, submit to a court of 
appropriate jurisdiction the question whether such indemnification by it is 
against public policy as expressed in the Act and will be governed by the 
final adjudication of such issue.

    The undersigned Registrant hereby undertakes:

    (1) That, for purposes of determining any liability under the Securities 
Act, each filing of the registrant's annual report pursuant to Section 13(a) 
or 15(d) of the Exchange Act that is incorporated by reference in the 
registration statement shall be deemed to be a new registration statement 
relating to the securities offered therein and the offering of such 
securities at that time shall be deemed to be the initial bona fide offering 
thereof.

    (2) To deliver or cause to be delivered with the Prospectus, to each 
person to whom the Prospectus is sent or given, the latest annual report to 
security holders that is incorporated by reference in the Prospectus and 
furnished pursuant to and meeting the requirements of Rule 14a-3 or Rule 
14c-3 under the Exchange Act; and where interim financial information 
required to be presented by Article 3 of Regulation S-X are not set forth in 
the Prospectus, to deliver or caused to be delivered to each person to whom 
the Prospectus is sent or given, the latest quarterly report that is 
specifically incorporated by reference in the Prospectus to provide such 
interim financial information.

    (3) That, for the purposes of determining liability under the Act, each 
post-effective amendment shall be deemed to be a new registration statement 
relating to the securities offered therein, and the offering of such 
securities at that time shall be deemed to be the initial bona fide offering 
thereof.

                                      II-3

<PAGE>

    (4) To remove from registration by means of a post-effective amendment 
any of the securities being registered which remain unsold at the termination 
of the offering.

    (5) To file, during any period in which it offers or sells securities, a 
post-effective amendment to this registration statement to include any 
additional or changed material information on the plan of distribution.

                                      II-4

<PAGE>

                                  SIGNATURES
   
    Pursuant to the requirements of the Securities Act of 1933, as amended, 
the Registrant certifies that it has reasonable grounds to believe that it 
meets all of the requirements for filing on Form S-3 and has duly caused this 
Amendment No. 2 to Registration Statement to be signed on its behalf by the 
undersigned, thereunto duly authorized, in the City of Seattle, State of 
Washington, on May 2, 1996.
    
   
                                       CYPRESS BIOSCIENCE, INC.
    
   
                                      By:      /s/ Alex P. de Soto
                                         ------------------------------------
                                                   Alex P. de Soto
                                                  Vice President and
                                                Chief Financial Officer
    


                                      II-5

<PAGE>

   
    Pursuant to the requirements of the Securities Act of 1933, this 
Amendment No. 2 to Registration Statement has been signed below by the 
following persons in the capacities and on the dates indicated.
    

<TABLE>
<CAPTION>

   
            SIGNATURE                           TITLE                        DATE
            ---------                           -----                        ----
<S>                                  <C>                                  <C>
        Jay D. Kranzler*             Vice Chairman of the Board of
- --------------------------------     Directors and Chief Executive        May 2, 1996
  Jay D. Kranzler, M.D. Ph.D.        Officer
                                     (Principal Executive Officer)


     /s/ Alex P. de Soto             Vice President and Chief 
- --------------------------------     Financial Officer (Principal         May 2, 1996
        Alex P. de Soto              Financial Officer)


         DebbyJo Blank*              Director, President and Chief
- --------------------------------     Operating Officer                    May 2, 1996
       DebbyJo Blank, M.D.


     Richard M. Crooks, Jr.*
- --------------------------------     Chairman of the Board                May 2, 1996
     Richard M. Crooks, Jr.


        Philip J. O'Reilly*
- --------------------------------     Director                             May 2, 1996
        Philip J. O'Reilly


          Jack H. Vaughn*
- --------------------------------     Director                             May 2, 1996
          Jack H. Vaughn


* By Alex P. de Soto as attorney-in-fact

    
</TABLE>

                                      II-6

<PAGE>


                                   INDEX TO EXHIBITS

<TABLE>
<CAPTION>

 EXHIBIT                                                                  SEQUENTIAL
 NUMBER                        DESCRIPTION                                 PAGE NO.
- --------                       -----------                                ----------
<S>        <C>                                                            <C>
  5.1      Opinion of Cooley Godward Castro Huddleson & Tatum

 23.1      Consent of Ernst & Young LLP, Independent Auditors

 23.2      Consent of Coopers & Lybrand L.L.P., Independent Accountants

 23.3      Consent of Cooley Godward Castro Huddleson & Tatum.
           Reference is made to Exhibit 5.1  

 24.1      Power of Attorney. Reference is made to page II-6

__________

</TABLE>

                                      II-7




<PAGE>
                                                                    EXHIBIT 5.1


February 20, 1996
   
IMRE Corporation
401 Queen Anne Avenue North
Seattle, WA 98109

    
Gentlemen:

   
You have requested our opinion with respect to certain matters in connection 
with the filing by IMRE Corporation (the "Company") of a Registration 
Statement on Form S-3 (the "Registration Statement") with the Securities and 
Exchange Commission, including a related prospectus filed with the 
Registration Statement (the "Prospectus"), covering the public offering of up 
to 9,560,702 shares of the Company's Common Stock, par value $.02 (the 
"Shares"), to be sold by certain stockholders, as described in the 
Registration Statement.
    

In connection with this opinion, we have examined and relied upon the 
Registration Statement and related Prospectus, the Company's Certificate of 
Incorporation and Bylaws, both as amended, and the originals or copies 
certified to our satisfaction of such records, documents, certificates, 
memoranda and other instruments as in our judgment are necessary or 
appropriate to enable us to render the opinion expressed below.

On the basis of the foregoing, and in reliance thereon, we are of the opinion 
that the Shares, when sold and issued in accordance with the Registration 
Statement and related Prospectus, will be validly issued, fully paid, and 
nonassessable.

We consent to the reference to our firm under the caption "Legal Matters" in 
the Prospectus included in the Registration Statement and to the filing of 
this opinion as an exhibit to the Registration Statement.

Very truly yours,



COOLEY GODWARD CASTRO
HUDDLESON & TATUM



By: /s/ FREDERICK T. MUTO
    ----------------------------
    Frederick T. Muto





<PAGE>

                                                                  EXHIBIT 23.1




                CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS

   
We consent to the reference to our firm under the caption "Experts" in 
Amendment No. 2 to the Registration Statement (Form S-3, No. 333-01071) and 
related Prospectus of Cypress Bioscience, Inc., formerly known as IMRE 
Corporation, and to the incorporation by reference therein of our report 
dated January 23, 1996, with respect to the consolidated financial statements 
of Cypress Bioscience, Inc. at December 31, 1995 and 1994 and for each year 
then ended, included in its Annual Report (Form 10-K/A) for the year ended 
December 31, 1995, filed with the Securities and Exchange Commission.
    

                                                       ERNST & YOUNG LLP

   
Seattle, Washington
May 1, 1996
    



<PAGE>

                                                                    EXHIBIT 23.2




                       CONSENT OF INDEPENDENT ACCOUNTANTS

   
We consent to incorporation by reference in Amendment No. 2 to the 
registration statement of Cypress Bioscience, Inc. (formerly IMRE Corporation)
on Form S-3 (Form S-3 No. 333-01071) of our report dated March 15, 1994, on 
our audit of the consolidated statements of operations, cash flows and 
stockholders' equity of IMRE Corporation for the year ended December 31, 1993
included in its Annual Report on Form 10-K, as amended, for the year ended 
December 31, 1995, filed with the Securities and Exchange Commission.
    

/s/ Coopers & Lybrand L.L.P.

   
Seattle, Washington
May 1, 1996
    



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