HEMISPHERX BIOPHARMA INC
424B3, 1996-09-30
DRUGS, PROPRIETARIES & DRUGGISTS' SUNDRIES
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PROSPECTUS
- ----------

                           HEMISPHERx BIOPHARMA, INC.

                          2,770 SHARES OF COMMON STOCK
      2,427,275 SHARES OF COMMON STOCK UNDERLYING SERIES D PREFERRED STOCK
                    890,543 SHARES OF COMMON STOCK UNDERLYING
                         COMMON STOCK PURCHASE WARRANTS


     This Prospectus relates to the possible resale of up to 2,770 shares of the
common stock, $.001 par value (the "Common Stock") of Hemispherx Biopharma, Inc.
(the  "Company")  currently  outstanding,   2,427,275  shares  of  Common  Stock
underlying  the  Company's  Series  D  Preferred  Stock,  $.01  par  value  (the
"Preferred  Stock")  and  up  to  890,543  additional  shares  of  Common  Stock
underlying certain  outstanding Common Stock Purchase Warrants (the "Warrants").
The Warrants  represent the right of the registered holder to purchase one share
of Common Stock at an average weighted exercise price of $4.56.

     The Company  will not receive any  proceeds  from  possible  resales by the
Selling  Securityholders  of their  respective  shares  of  Common  Stock of the
Company.   The  Company  has  agreed  to   indemnify   certain  of  the  Selling
Securityholders against certain liabilities, including certain liabilities under
the Securities Act of 1933, as amended (the "Securities  Act"), or contribute to
payments which such Selling  Securityholders  may be required to make in respect
thereof.  The Company  will  receive  gross  proceeds of up to  $4,064,900  upon
exercise of the  Warrants.  There can be no  assurance  that any of the Warrants
will be exercised.

     The Selling Securityholders may sell their shares of Common Stock from time
to time, in market transactions, in negotiated transactions, through the writing
of options,  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
Securityholders  may effect such  transactions by selling their shares of Common
Stock  to  or  through  broker-dealers,  and  such  broker-dealers  may  receive
compensation  in the form of  discounts,  concessions  or  commissions  from the
Selling Securityholders and/or the purchasers of such shares of Common Stock for
whom  such  broker-dealer  may  act as  agents  or to  whom  they  may  sell  as
principals,  or both (which compensation as to a particular  broker-dealer might
be in excess of  customary  commissions).  The  Company  has  agreed to bear all
expenses in connection  with the  registration  of the shares of Common Stock to
which this Prospectus relates.

     The  Company's  Common Stock and Class A Redeemable  Warrants (the "Class A
Warrants") are quoted on the Nasdaq SmallCap Market System  ("Nasdaq") under the
symbols HEMX and HEMXW,  respectively.  On September 9, 1996 the last sale price
of the Common  Stock and Class A Warrants  as  reported on Nasdaq was $3.625 and
$1.25, respectively.

THESE  SECURITIES  ARE HIGHLY  SPECULATIVE.  THEY INVOLVE A HIGH DEGREE OF RISK.
THEY SHOULD BE PURCHASED  ONLY BY PERSONS WHO CAN AFFORD TO SUSTAIN A TOTAL LOSS
OF THEIR ENTIRE INVESTMENT (SEE "RISK FACTORS" - PAGE 7)

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 September 16, 1996
<PAGE>

                             ADDITIONAL INFORMATION

     With respect to the securities  offered hereby,  the Company has filed with
the  principal   office  of  the   Securities  and  Exchange   Commission   (the
"Commission")  in Washington,  D.C., a Registration  Statement on Form S-1 under
the Securities Act. For purposes hereof, the term "Registration Statement" means
the original  Registration  Statement and any and all amendments  thereto.  This
Prospectus does not contain all of the information set forth in the Registration
Statement and the exhibits  thereto,  to which  reference  hereby is made.  Each
statement made in this  Prospectus  concerning a document filed as an exhibit to
the Registration  Statement is not necessarily  complete and is qualified in its
entirety  by  reference  to  such  exhibit  for  a  complete  statement  of  its
provisions.  The  Company is subject to the  informational  requirements  of the
Securities Exchange Act of 1934 (the "Exchange Act") and in accordance therewith
files reports and other  information  with the Commission.  Any interested party
may inspect the  Registration  Statement  and its exhibits and other reports and
information filed by the Company with the Commission without charge, or obtain a
copy of all or any portion thereof, at prescribed rates, at the public reference
facilities of the  Commission at its principal  office at Judiciary  Plaza,  450
Fifth  Street,  N.W.,  Room  1024,  Washington,  D.C.  20549.  The  Registration
Statement  and  exhibits  may also be  inspected  at the  Commission's  regional
offices at  Northwestern  Atrium Center,  500 West Madison  Street,  Suite 1400,
Chicago, Illinois 60661-2511, and at 7 World Trade Center, Suite 1300, New York,
New York 10048.

                                       2
<PAGE>

                               PROSPECTUS SUMMARY

     The  following  summary is qualified  in its entirety by the more  detailed
information  and  the  Consolidated   Financial  Statements  and  Notes  thereto
appearing  elsewhere or incorporated by reference  elsewhere in this Prospectus,
including  information  under "Risk  Factors".  See  "Glossary of Terms" for the
definition of certain terms used in this Prospectus.

                                   THE COMPANY

     Hemispherx   Biopharma,   Inc.  ("HEM"  or  the  "Company")  (formerly  HEM
Pharmaceuticals   Corp.)  is  a   pharmaceutical   company  using  nucleic  acid
technologies to develop therapeutic products for the treatment of viral diseases
and certain cancers. Nucleic acid compounds represent a potentially new class of
pharmaceutical  products that are designed to act at the molecular level for the
treatment of human disease.  The Company's drug  technology  utilizes  specially
configured  ribonucleic  acid ("RNA").  The Company's  double  stranded RNA drug
product,  trademarked Ampligen(R),  which is administered  intravenously,  is in
human clinical  development for various  therapeutic  indications.  Based on the
results of pre-clinical  studies and clinical trials,  the Company believes that
Ampligen may have broad-spectrum anti-viral and anti-cancer activities. Over 300
patients have received  Ampligen in clinical trials  authorized by the U.S. Food
and Drug  Administration  ("FDA") at over twenty clinical trial sites across the
United States, representing the administration of more than 40,000 doses of this
drug.  Ampligen  is  being  developed  clinically  for  use  in  treating  three
anti-viral indications:  chronic Hepatitis B virus ("HBV") infection (Phase I/II
clinical  trial),  human  immunodeficiency  virus ("HIV")  associated  disorders
(Phase  II),  and  myalgic  encephalomyelitis,  also  known as  chronic  fatigue
syndrome ("ME/CFS") (Phase II/III).  The Company's business strategy is designed
around  seeking  the  required   regulatory   approvals  which  will  allow  the
progressive  introduction  of Ampligen for HIV followed by HBV and ME/CFS in the
U.S.,  Canada,  Europe and Japan.  There can be no assurance  that Ampligen will
receive  regulatory  approval for any of such  disorders.  Ampligen has received
Orphan Drug  designation  from the FDA for four  indications  (AIDS,  renal cell
carcinoma, chronic fatigue syndrome and invasive malignant melanoma), the latter
two of which were obtained in December  1993.  The Company is also  developing a
second  generation  RNA drug  technology,  termed  Oragen  compounds,  which the
Company believes offers the potential for broad spectrum  antiviral  activity by
oral administration.

     The  World   Health   Organization   ("WHO")   estimates   that  there  are
approximately  300 million chronic  carriers of HBV worldwide.  More than 40% of
the  persistently  infected  persons  who  survive  to  adulthood  will die from
cirrhosis, hepatocellular carcinoma (liver cancer), or some other consequence of
their  infection.  In the  U.S.  alone,  there  are an  estimated  1.25  million
carriers.  HBV is  one  of  several  viruses  that  cause  human  hepatitis,  or
inflammation of the liver. The Company has been conducting a Phase I/II clinical
trial of Ampligen in the U.S.  for the  treatment  of chronic HBV  infection  at
Stanford University and the University of Pennsylvania.  A significant reduction
in viral  components  and  improvement  in liver  function  was noted during the
course of the Phase I/II clinical  trial to date and the drug has been generally
well tolerated.  At present,  interferon-alpha  is the only approved product for
the treatment of this disease;  however, 60% to 75% of patients with chronic HBV
ultimately fail to respond to  interferon-alpha.  The global sales of interferon
are presently  estimated at more than $1 billion,  largely because of its use in
liver infections.

     The Centers for Disease  Control  ("CDC") has estimated that  approximately
one million  people in the U.S. are infected  with HIV,  excluding  patients who
have progressed to fully  symptomatic  AIDS. The WHO has estimated that 30 to 40
million people will be infected with HIV worldwide by the year 2000. The Company
is in Phase II clinical  testing of Ampligen in the U.S.  for the  treatment  of
symptomatic HIV infection.

     ME/CFS is a condition  recently  recognized by the CDC and characterized by
unexplained  fatigue  or chronic  illness  for six months or longer for which no
cause has been identified after a thorough medical work-up.  Although the CDC is
presently  conducting studies to more exactly determine the rate of incidence of
ME/CFS,  the CDC's latest estimate of the prevalence rate of this disease in the
U.S. is in excess of 200 per 100,000  population.  In November 1992, the Company
received  approval  from  the  Health  Protection  Branch  ("HPB")  of  Canada's
Department of Health and Welfare,  the federal drug regulatory agency in Canada,
to conduct an  open-label  clinical  trial of Ampligen in patients with severely
debilitating  ME/CFS. In this clinical trial, the HPB has authorized the Company
to charge  patients  for the cost of the Ampligen  administered.  The Company is
presently  receiving  limited revenues from sales of Ampligen in Belgium under a
similar cost recovery  program.  The Company has also received  authorization in
1993 from the FDA,  in the U.S.,  and the HPB,  in Canada,  to  initiate a Phase
II/III  clinical  trial of  Ampligen  in patients  with  ME/CFS.  The Company is
unaware of any  investigational  new drugs  which are  currently  at  comparable
stages of clinical development for ME/CFS.

                                       3
<PAGE>

     The Company also has clinical  experience  with  Ampligen in patients  with
certain cancers,  including renal cell carcinoma  (kidney cancer) and metastatic
malignant melanoma.  Based on estimates prepared by the American Cancer Society,
the  Company  anticipates  that  approximately  25,000  new cases of renal  cell
carcinoma  will be  diagnosed  in the U.S.  in 1996.  In March and  June,  1993,
respectively,  the Company was  authorized by the FDA, in the U.S., and the HPB,
in Canada,  to initiate a Phase II/III  clinical trial of Ampligen in renal cell
carcinoma patients. In late 1993, the HPB authorized the Company to proceed with
an open-label clinical trial of Ampligen for renal cell carcinoma in Canada. The
HPB has authorized  the Company to charge  patients for the cost of the Ampligen
administered  in this  clinical  trial.  The  Company  has not  initiated  these
programs  to date  because of  limited  resources  and a shift in the  Company's
clinical  priorities.  The Company  does not believe  that  approvals  for these
studies will be withdrawn as a result of the delay since the approvals  were not
conditioned upon a particular  commencement date. Based on estimates prepared by
the American Cancer Society,  the Company anticipates that approximately  34,000
new cases of malignant melanoma will be diagnosed in the U.S. in 1996. Data from
the American Cancer Society and the World Health Organization indicate that both
the incidence and mortality  from malignant  melanoma are rising  steadily among
white  populations  throughout the world.  In the past decade,  the incidence of
melanoma has  increased  faster than that of any other cancer except lung cancer
in women.

     In November  1995,  the Company  sold  5,313,000  Units  through an initial
public offering. Each Unit consists of one share of Common Stock and one Class A
Warrant.

     In September 1995, the Company entered into an agreement with Rivex Pharma,
Inc., a Canadian-based pharmaceutical company ("Rivex"), pursuant to which Rivex
will provide various  services in connection with the exclusive  distribution of
Ampligen in Canada on an emergency drug release  basis.  Under the terms of this
agreement,  the Company will supply and Rivex will  purchase as much Ampligen as
necessary  to satisfy  Rivex's  customers  at a mutually  agreed  upon cost.  In
return, Rivex will retain the exclusive right to distribute Ampligen in Canada.

     In October  1994,  the Company  entered  into an agreement  with  Bioclones
Proprietary  Limited  ("Bioclones"),   a  biopharmaceutical   company  which  is
associated with The South African  Breweries  Limited ("SAB" and,  together with
Bioclones,  "SAB/Bioclones") with respect to codevelopment of various RNA drugs,
including Ampligen,  for which the Company has previously obtained international
patent  protection.  The licensing  agreement,  as amended (the "SAB Agreement")
provides  that  the  Company  will  provide   SAB/Bioclones  with  an  exclusive
manufacturing  and marketing license for certain Southern  hemisphere  countries
(including  certain  countries in South America) as well as the United  Kingdom,
Ireland,  Africa,  Australia,  Tasmania, New Zealand and certain other countries
and territories.  In exchange for these marketing and distribution  rights,  the
SAB  Agreement  provides  for:  (a) a $3 million  cash  payment to the  Company,
payable in installments upon the occurrence of certain milestones, including the
transfer of certain technical documents which have already been transferred; (b)
the  formation  and  issuance to the Company of 24.9% of the capital  stock of a
company which is developing and operating a new  manufacturing  facility for RNA
drugs  constructed  by  SAB/Bioclones;  and (c)  royalties  on all  sales of the
Company's  product in the  licensed  territories  after the first $50 million of
sales. In addition, SAB/Bioclones has agreed to use reasonable efforts to pursue
the marketing approval of Ampligen for HBV in Australia,  South Africa,  Brazil,
and the United  Kingdom,  as well as to perform (at its own expense) a phase III
study of Ampligen for chronic HBV  infection  in South  Africa,  which  clinical
study is to be performed  pursuant to U.S. FDA good  clinical  practice and good
laboratory  practice  ("GLP")  guidelines and standards.  SAB/Bioclones  will be
granted a right of first  refusal to  manufacture  and supply to the Company the
drug product  required for not less than  one-third of its  world-wide  sales of
Ampligen (after deducting SAB/Bioclones-related sales). To date, the Company has
received approximately $3,000,000 pursuant to the SAB Agreement.

     In  September  1994,  the Company  formed  three  subsidiaries  and granted
licenses to the  subsidiaries  for the purpose of developing  its technology for
ultimate sale into certain  non-pharmaceutical  specialty consumer markets, such
as the  tobacco  market,  the market for  skincare  products  and the market for
diagnostic  devices.  The  Company  intends  to  issue  equity  in one  of  such
subsidiaries  and has granted  options to certain of its officers and directors.
See "Business Subsidiary Companies." No assurance can be given that any of these
companies will be able to complete testing in these areas,  develop any products
or  successfully  produce  and market any  products  in the  targeted  specialty
consumer markets.

     The Company's  corporate  headquarters  are located at 1617 JFK  Boulevard,
Philadelphia,  Pennsylvania  19103.  The  Company's  telephone  number  is (215)
988-0080.

                                       4
<PAGE>

As of July 15, 1996

Securities Outstanding (1)(2)(3)(4)   Common Stock                     9,470,675
                                      Series D Preferred Stock             6,000
                                      Units                            6,110,917
                                                                      
Risk Factors:                         AN INVESTMENT IN THE COMPANY'S  SECURITIES
                                      INVOLVES  A HIGH  DEGREE  OF  RISK.  FOR A
                                      DISCUSSION   OF   CERTAIN   RISK   FACTORS
                                      EFFECTING THE COMPANY, SEE "RISK FACTORS".

Nasdaq Symbols
  for Common Stock                    HEMX
  for Warrants                        HEMXW

- ---------------
(1)  Excludes: (i) 460,798 shares of Common Stock reserved for issuance pursuant
     to the  Company's  1990 Stock  Option Plan under which  options to purchase
     228,502  shares  have been  granted;  (ii)  92,160  shares of Common  Stock
     reserved  for  issuance  pursuant to the  Company's  1992 Stock Option Plan
     under  which no  options  or other  rights  to  purchase  shares  have been
     granted;  (iii)  138,240  shares  of Common  Stock  reserved  for  issuance
     pursuant to the  Company's  1993 Employee  Stock  Purchase Plan pursuant to
     which no rights to purchase  shares have been  granted;  (iv) 556 shares of
     Common Stock  reserved for issuance  pursuant to options  granted  prior to
     1990; (v) 1,663,797  shares of Common Stock reserved for issuance  pursuant
     to certain outstanding  warrants with an average weighted exercise price of
     $3.70;  (vi)  2,080,000  warrants to purchase  Common  Stock of the Company
     issued to officers,  directors and  consultants  of the Company in reliance
     upon Rule 701 of the  Securities  Act,  at an  exercise  price of $3.50 per
     share (the "Rule 701 Warrants");  and (vii) 2,750,000  warrants to purchase
     Common Stock at an exercise  price of $1.75 per share issued in  accordance
     with the terms of the 1995 Standby Financing  Agreement.  See "Management's
     Discussion and Analysis of Financial  Condition and Results of Operations,"
     "Management--1992  Stock  Option  Plan,"  "--1990  Stock  Option  Plan" and
     "--Employee Stock Purchase Plan," "Description of Securities--Warrants"

 (2) Does not  include  195,833  shares of Common  Stock and  1,000,000  Class A
     Warrants  contained  in the Bridge  Units  issuable  upon  exercise  of the
     Bridgeholder Option issued in connection with the Bridge Loans.

 (3) Does not  include  6,110,917  shares  of  Common  Stock  issuable  upon the
     exercise  of the Class A  Warrants  contained  in the Units at an  exercise
     price of $4.00 per share.

 (4) Does not include  2,427,275  shares of Common  Stock  reserved for issuance
     upon conversion of the Preferred Stock.

                                       5
<PAGE>

                          SUMMARY FINANCIAL INFORMATION
                 (in thousands, except share and per share data)

     The  data  set  forth  below  should  be  read  in  conjunction   with  the
Consolidated Financial Statements, related Notes and other financial information
included or incorporated by reference elsewhere in this Prospectus.
<TABLE>
<CAPTION>

                                                                                                    Six Months Ended
                                                        December 31,                                    June 30,
                                 ----------------------------------------------------------      ----------------------
                                                                                                       (unaudited)
                                     1991       1992       1993        1994          1995          1995            1996
                                     ----       ----       ----        ----          ----          ----            ----
<S>                                 <C>        <C>        <C>         <C>           <C>             <C>             <C>
Consolidated Statements
of Operations Data:                                                                                             
  Revenues                                                                                                      
    Research and Development       $   --     $   --     $   48      $   76        $   66        $   33          $   18
    License fee                        --         --         --         100         2,900         1,000              --
                                   ------     ------     ------      ------        ------        ------          ------
  Total Revenues                       --         --         48         176         2,966         1,033              18
  Cost and expenses:                                                                                            
    Research and development        6,181      4,734      2,119       1,638         1,029           533             694
    General and administrative      2,469      2,825      3,347       2,618         2,880         1,274           1,236
                                   ------     ------     ------      ------        ------        ------          ------
    Total costs and expenses        8,650      7,559      5,466       4,256         3,909         1,807           1,930
    Debt conversion expenses           --         --     (1,215)        (10)         (149)         (149)             --
  Net interest income (expense)       172       (322)    (1.069)     (1,043)         (748)         (449)            166
                                   ------     ------     ------      ------        ------        ------          ------
  Net loss                        $(8,478)   $(7,881)   $(7,702)    $(5,133)      $(1,840)      $(1,372)        $(1,746)
                                   ======     ======     ======      ======        ======        ======          ======
  Net loss per share                   --         --         --      $ (.44)(1)   $  (.13)(1)   $  (.11)(1)     $  (.11)
  Weighted average                                                                                          
    number of shares outstanding
    used in computing
    net loss per share                 --         --         --   11,536,276(1) 14,199,701(1) 13,047,506(1)  15,581,592
</TABLE>



                                               December 31, 1995   June 30, 1996
                                               ----------------    ------------
Consolidated Balance Sheet Data:                                    (Unaudited)
Current assets .............................       $11,354            $2,625
Current liabilities ........................         8,279             1,366
Total assets ...............................        12,700             4,043
Long-term obligations ......................             0                 0
Accumulated deficit ........................       (43,544)          (45,291)
Stockholders' equity .......................         4,421             2,678

- -------------
(1)  Computed  on a  proforma  basis  described  in  Note 3 to the  Consolidated
     Financial Statements.

                                       6
<PAGE>

                                  RISK FACTORS

     AN  INVESTMENT  IN THE  SECURITIES  OFFERED  HEREBY IS HIGHLY  SPECULATIVE,
INVOLVES  A HIGH  DEGREE OF RISK AND  SHOULD BE MADE ONLY BY  INVESTORS  WHO CAN
AFFORD THE LOSS OF THEIR ENTIRE  INVESTMENT.  PROSPECTIVE  PURCHASERS,  PRIOR TO
MAKING AN  INVESTMENT  DECISION,  SHOULD  CAREFULLY  CONSIDER,  ALONG WITH OTHER
MATTERS REFERRED TO HEREIN, THE FOLLOWING RISK FACTORS:

     Dependence on Ampligen;  Non-Exclusive  Right to  Manufacture  of Ampligen;
Expiration of Patents.

     The  Company's  principal  development  efforts  are  currently  focused on
Ampligen. While most clinical trials of Ampligen have to date produced favorable
results,  additional  trials  sponsored  by  the  Company  are  planned,  and no
assurance can be given that the drug will  ultimately be demonstrated to be safe
or  efficacious.  In addition,  while  Ampligen has been  authorized  for use in
clinical  trials in the United States and other  countries,  no assurance can be
given that additional clinical trials approvals will be authorized in the United
States or in other countries in a timely fashion or at all or that such clinical
trials will be  completed  by the  Company.  The Company has never  commercially
introduced a product,  and no assurance can be given that  commercialization  of
Ampligen in any countries where Ampligen may be approved will prove  successful.
In addition, the Company does not have exclusive rights to manufacture Ampligen.
Competitors  of the Company are  currently  able to  manufacture  Ampligen.  The
Company  believes,  however,  that its  extensive  patent estate may hinder such
competitors  from testing and  developing  Ampligen for  particular  indications
since the Company has patented the use of Ampligen for many disease indications.
The Company further believes that the available market for non-patented  disease
indications  for Ampligen  which might be available  to  competitors  is minimal
since the Company believes,  based on laboratory tests, that Ampligen may not be
effective against such disease indications; however, no assurances can be given.
Willful  infringement of the Company's  patents by a competitor  could result in
significant  monetary damages to the Company in the event that such infringement
was not  enjoined  by a court  of  law.  Nevertheless,  in the  event  that  the
Company's   patent   protection  is  not  adequate  for  all  relevant   disease
indications,  competitors  might  be able to  test,  develop  and  commercialize
Ampligen. Additionally, as a result of the Company's dependence on Ampligen, the
failure to  demonstrate  the  drug's  safety and  efficacy  in planned  clinical
trials, to conduct the planned clinical trials,  to obtain additional  approvals
for the drug or to successfully  commercialize  the drug would have a materially
adverse effect on the Company.

     No Assurance of Regulatory Approval; Government Regulation.

     The Company's research,  preclinical development,  clinical trials, and the
manufacturing and marketing of its products are subject to extensive  regulation
by numerous governmental authorities in the U.S. and other countries, including,
but not limited to, the Food and Drug Administration ("FDA") in the U.S. and the
Health Protection Branch of Canada's Department of Health and Welfare ("HPB"), a
federal  regulatory  agency in Canada.  None of the Company's  products has been
approved for commercial sale by the FDA, the HPB or any other foreign regulatory
authority  and the  Company  does not  expect to achieve  profitable  operations
unless Ampligen  receives FDA approval and is  commercialized  successfully.  In
order to obtain  FDA  approval  of a new drug  product  for an  indication,  the
Company must  demonstrate  to the  satisfaction  of the FDA that such product is
safe and  effective  for its  intended  uses and that the  Company is capable of
manufacturing the product to the applicable regulatory standards. The process of
obtaining FDA and other required  regulatory  approvals  (including those of the
HPB) is rigorous and lengthy and has  required and will  continue to require the
expenditure of substantial resources. There can be no assurance that the Company
will  be able to  obtain  the  necessary  regulatory  approvals.  Unsatisfactory
clinical  trial  results,  clinical  trials not  conducted  in  accordance  with
applicable protocol requirements and/or delays in obtaining regulatory approvals
would  prevent the marketing of products  developed by the Company,  and pending
the receipt of such approvals,  the Company will not receive product revenues or
royalties.

     Pharmaceutical  products  and their  manufacture  are subject to  continued
review following regulatory approval,  and later discovery of previously unknown
problems may result in the imposition of  restrictions on such products or their
manufacture,  including  withdrawal of the products from the market.  Failure to
comply with applicable regulatory requirements could, among other things, result
in  fines,  suspension  of  regulatory  approvals,  operating  restrictions  and
criminal prosecution.  The Company cannot predict the extent to which current or
future  government  regulations  might have a materially  adverse  effect on the
production,  marketing and sale of the Company's products.  Such regulations may
delay or prevent clinical trials,  regulatory  approval,  and the manufacture or
marketing of the Company's potential products. In addition,  such regulation may


                                       7
<PAGE>

impose costly procedures upon the Company's  activities or furnish a competitive
advantage to other  companies more  experienced  in regulatory  affairs than the
Company and may deplete the Company's liquidity and capital resources.

     Additional Financing Requirements.

     The development of the Company's products has required and will continue to
require the  commitment of substantial  resources to conduct the  time-consuming
research,  preclinical  development,  and clinical  trials that are necessary to
bring  pharmaceutical  products  to  market  and  to  establish  commercial-sale
production and marketing capabilities.  Based on its current operating plan, the
Company  anticipates  that  projected  cash flow from  operations  and currently
available  financing  arrangements  will be  sufficient  to meet  the  Company's
capital  requirements  for  approximately  18  months  from  the  date  of  this
Prospectus.  It is not  expected  that the  Company's  current cash flow will be
sufficient  to enable the Company to complete the necessary  clinical  trials or
regulatory  approval  process for  Ampligen for any  indication  or, if any such
approval  were  obtained,  to begin  manufacturing  or  marketing  Ampligen on a
commercial  basis.  Accordingly,  the  Company  may  need to  raise  substantial
additional  funds through  additional  equity or debt  financing,  collaborative
arrangements with corporate partners,  off balance sheet financing or from other
sources in order to complete the necessary  clinical  trials and the  regulatory
approval processes and begin commercializing its products. If adequate funds are
not available from operations, as is anticipated, and if the Company is not able
to secure  additional  sources of financing on acceptable  terms,  the Company's
business will be materially adversely affected.  In addition,  certain officers,
directors and shareholders have entered into a 1995 Standby Financing  Agreement
pursuant to which they have agreed to provide  funding up to  $5,500,000  to the
Company in the event that existing and additional  financing is  insufficient to
cover the cash needs of the Company through December 1, 1996.

     Moreover,  because of the Company's long-term capital requirements,  it may
seek to access the public equity market whenever conditions are favorable,  even
if it does not have an immediate need for additional capital at that time. There
can be no assurance that any additional funding will be available to the Company
on terms acceptable to the Company, if at all. Any additional funding may result
in significant dilution and could involve the issuance of securities with rights
which are senior to those of  existing  stockholders.  The Company may also need
additional funding earlier than anticipated, and the Company's cash requirements
in general may vary  materially from those now planned,  for reasons  including,
but not limited to, changes in the Company's research and development  programs,
clinical trials, competitive and technological advances, the regulatory process,
and higher than anticipated  expenses and lower than  anticipated  revenues from
certain  of the  Company's  clinical  trials  as to  which  cost  recovery  from
participants has been approved.

     Uncertainty Regarding Patents and Proprietary Rights.

     The Company's  success will depend, in large part, on its ability to obtain
patent  protection  for its  products  and to obtain  and  preserve  proprietary
information and trade secrets. The Company does not have exclusive rights to the
manufacture of Ampligen. Consequently, the Company's ability to obtain exclusive
rights  for  the  commercial  sale  of  Ampligen  is  subject  to the  Company's
acquisition of enforceable patents covering the use of the drug for a particular
indication.  The Company has been issued certain  patents on the use of Ampligen
alone and Ampligen in combination  with certain other drugs for the treatment of
human  immunodeficiency virus ("HIV"). The Company has also been issued a patent
on the use of Ampligen in combination with certain other drugs for the treatment
of chronic Hepatitis B virus ("HBV") and chronic Hepatitis C virus ("HCV") and a
patent which affords  protection on the use of Ampligen in patients with myalgic
encephalomyetis,  also know as chronic fatigue syndrome ("ME/CFS"). To date, the
Company has not been  issued any patents in the U.S.  for the use of Ampligen as
monotherapy  for HBV or for any of the  cancers  which the Company has sought to
target.  The Company's  applications for U.S. patents for the use of Ampligen as
monotherapy for HBV and in the treatment of renal cell carcinoma and lung cancer
are  currently  pending,  although no  assurances  can be given that any of such
applications will be approved.  No assurances can be given that competitors will
not seek and obtain patents  regarding the use of Ampligen in  combination  with
various other agents (including AZT) for a particular target indication prior to
the  Company.   Although  the  Company's  license  to  manufacture  Ampligen  is
non-exclusive,  the  Company  believes  that  the  existence  of  the  Company's
treatment indication patents precludes a competitor from selling an identical or
similar product for the same treatment  indication  without  infringing upon the
Company's issued patents. No assurance can be given, however, that the Company's
patent  protection  will be  adequate  to  prevent  the entry into the market of
competitors for all of the Company's treatment indications.

                                       8
<PAGE>

     The Company has been unable to secure Orphan Drug  designation from the FDA
for  treatment  of HBV in the U.S.  In the event  that the  Company is unable to
obtain  adequate  patent  protection for the  indication,  it would be unable to
maintain a competitive advantage over other drug manufacturers which could enter
the market immediately.

     The patent position of  biotechnology  and  pharmaceutical  firms is highly
uncertain  and  involves  complex  legal  and  factual  questions.  To date,  no
consistent  policy has emerged  regarding the breadth of protection  afforded by
pharmaceutical and biotechnology patents. Accordingly, there can be no assurance
that patent  applications  relating to the Company's products or technology will
result in patents  being  issued or that,  if issued,  such  patents will afford
meaningful  protection  against  competitors  with  similar  technology.  It  is
generally  anticipated that there may be significant  litigation in the industry
regarding patent and other intellectual property rights and that such litigation
could consume  substantial  resources of the Company.  No assurance can be given
that the Company's patents will provide competitive  advantages for its products
or will not be successfully  challenged or circumvented by its  competitors.  No
assurance  can be given that  patents  do not exist or could not be filed  which
would have a materially  adverse  effect on the Company's  ability to market its
products  or to obtain or  maintain  any  competitive  position  the Company may
achieve with respect to its products. The Company's patents also may not prevent
others from  developing  competitive  products using related  technology.  Other
companies obtaining patents covering products or processes useful to the Company
may bring  infringement  actions against the Company.  There can be no assurance
that the Company will have the financial  resources  necessary to enforce patent
rights it may hold. As a result,  the Company may be required to obtain licenses
from  others to develop,  manufacture  or market its  products.  There can be no
assurance  that  the  Company  would be able to  obtain  any  such  licenses  on
commercially  reasonable  terms, if at all. The Company licenses certain patents
and  proprietary  information  from third  parties,  some of which  patents  and
proprietary  information  may have been developed with  government  grants under
circumstances where the government maintained certain rights with respect to the
patents/information  developed.  No  assurances  can be given  that  such  third
parties will adequately  enforce any rights they may have or that the rights, if
any,  retained  by the  government  will not  adversely  affect the value of the
Company's  license.  Certain of the  Company's  know-how and  technology  is not
patentable,  particularly  the procedures  for the  manufacture of the Company's
drug product  which are carried out  according to standard  operating  procedure
manuals.  To protect its rights,  the Company has since 1991 required  employees
and consultants to enter into confidentiality agreements with the Company. There
can be no assurance that these agreements will not be breached, that the Company
would have adequate and enforceable  remedies for any breach,  or that any trade
secrets of the  Company  will not  otherwise  become  known or be  independently
developed by competitors.

     Disputes and Legal Proceedings Related to Patent Rights.

     The  Company's  ownership of one of its patents for the use of Ampligen for
the  treatment  of HIV is the subject of a dispute.  Vanderbilt  University  has
advised the Company of its position that  employees of the  University  were the
inventors of the patent at issue.  The Company does not believe the University's
position to have merit, and if the University filed a claim against the Company,
the Company would vigorously defend against such an action. If such a claim were
filed and if such a claim  were found to have  merit,  the loss of the patent at
issue would not have a materially  adverse  effect on the  Company's  long range
business  since  the  University  would  be able to limit  or  prevent  only the
Company's  use of Ampligen in  combination  with AZT in the treatment of HIV. In
the event that the University  obtained  ownership of the disputed  patent,  the
University  could  license  a third  entity  to  sell  Ampligen  for a  specific
combinational  treatment.  However,  without the Company's consent,  the Company
believes  that the  commercialization  process by a third  party  would  require
substantial   expenditure  to  repeat   clinical  trials  and  establish  a  new
manufacturing  protocol  acceptable to  regulatory  agencies and would require a
license  from  the  Company  for  the  use of  Ampligen  as a  component  of the
combinational requirement. Furthermore, the loss of this patent would not affect
the  Company's  ability  to  market  Ampligen  as a  monotherapy  for HIV  which
treatment the Company has tested and expects to continue to develop.

     In July 1994, Temple  University  advised the Company that it was in breach
of a certain  licensing  agreement  for certain  ribonucleic  acid  ("RNA") drug
compounds  termed  Oragen   compounds  at  the  preclinical   stage  of  product
development.  In November 1994, in an action captioned HEM Pharmaceuticals Corp.
v. Temple University of the Commonwealth System of Higher Education, the Company
filed suit against  Temple in the Superior  Court of the State of Delaware,  New
Castle County  seeking a declaratory  judgment that the licensing  agreement was
unlawfully terminated by Temple and remains in full force and effect and seeking
monetary  damages  estimated to be in excess of $10 million for Temple's alleged

                                       9
<PAGE>

breach of its  obligations  of good faith and fair dealing and certain  terms of
the  Temple  Agreement.  In January  1995,  Temple  filed a separate  litigation
against the Company in the Court of Common Pleas of Philadelphia  County seeking
declaratory  judgment that the Temple  Agreement  was lawfully  terminated as of
July 1, 1994,  together with an award of costs,  including  attorney  fees.  The
Court of Common Pleas has stayed further  proceedings in that litigation pending
the outcome of the  Company's  Superior  Court case. If the Company were to lose
its claim,  the  Company  would lose its  investment  to date in certain  Oragen
compounds  acquired  pursuant to the Temple  Agreement.  While not yet tested on
humans these Oragen  compounds have the potential and  theoretical  advantage of
having an  Ampligen-like  effect upon oral  administration.  No assurance can be
given that as a result of such loss,  Temple or its new licensee,  if any, would
not become  competitors of the Company or that the  termination of the licensing
agreement will not have a materially  adverse effect on the Company's long range
business or financial condition.

     History of Losses; Future Profitability Uncertain.

     The Company began  operations in 1966 and has reported net profit only from
1985 through 1987.  Since 1987, the Company has incurred  substantial  operating
losses  and  as of  March  31,  1996,  the  Company's  accumulated  deficit  was
approximately $44 million.  The Company has not generated  significant  revenues
from its products and could incur substantial and increased losses over the next
several years. Such losses may fluctuate  significantly from quarter to quarter.
There  can be no  assurance  that the  Company  will  ever  achieve  significant
revenues  from product  sales or become  profitable.  The  Company's  ability to
achieve  profitable  operations  is dependent,  in large part,  on  successfully
developing  products,  obtaining  regulatory  approvals on a timely  basis,  and
making the transition  from a research and  development  firm to an organization
producing commercial products or entering into joint ventures or other licensing
arrangements.  No assurance can be given that the Company's product  development
efforts will be successfully  completed,  required regulatory  approvals will be
obtained,  any  products  will be  manufactured  and marketed  successfully,  or
profitability will be achieved.

     No Assurance of Successful Product Development.

     The  development of new  pharmaceutical  products is subject to a number of
significant  risks.  Potential  products that appear to be promising at an early
stage of  research  or  development  may not  reach the  market  for a number of
reasons.  Potential  products may be found to be  ineffective or to have adverse
side effects, fail to receive necessary regulatory  clearances,  be difficult to
manufacture on a commercial  scale,  be  uneconomical  to market or be precluded
from  commercialization  by proprietary  rights of third parties.  The Company's
products are in various stages of clinical and  pre-clinical  development;  each
will  need  to  progress   through  further  clinical  studies  and  appropriate
regulatory approval processes before any such products can be marketed. Ampligen
is not expected to be generally available for commercial sale for any indication
for at  least  the  next  several  years,  if at  all.  Generally,  only a small
percentage of potential  therapeutic products are eventually approved by the FDA
for commercial sale. The transition from limited  production of pre-clinical and
clinical  research  quantities to  production  of  commercial  quantities of the
Company's products will involve distinct management and technical challenges and
will require  additional  management and technical  personnel and capital to the
extent  such  manufacturing  is not  handled by third  parties.  There can be no
assurance  that the  Company's  efforts  will be  successful  or that any  given
product  will  be  determined  to  be  safe  and  effective,  capable  of  being
manufactured economically in commercial quantities or successfully marketed.

     Limited Manufacturing Experience and Capacity.

     Ampligen is currently  produced only in limited  quantities  for use in its
clinical trials. To be successful,  the Company's  products must be manufactured
in commercial  quantities  in compliance  with  regulatory  requirements  and at
acceptable  costs.  Although  the  Company has entered  into an  agreement  with
Bioclones Proprietary, Ltd. ("Bioclones"),  a biopharmaceutical company which is
associated  with  South  African  Breweries,   Ltd.  (together  with  Bioclones,
"SAB")(the  "SAB  Agreement")  which  provides  for  the  construction  of a new
commercial  manufacturing  facility  by a  company  which is 24.9%  owned by the
Company,  no assurance can be given as to the timing of such  construction,  and
therefore  the  Company  may  continue to be  dependent  on third  parties for a
considerable  portion  of the  manufacturing  and  production  process.  A pilot
facility  in South  Africa is being  expanded  to  provide  a limited  supply of
Ampligen raw  material.  While the Company  believes  that  construction  of the
commercial  facility will begin in 1997, the  construction is dependent upon the

                                       10
<PAGE>

regulatory status of Ampligen in various global markets, and no assurance can be
given with respect to when, and if,  construction  will occur. To the extent the
Company is involved in the production process,  the Company's current facilities
are not adequate for the  production  of its proposed  products for  large-scale
commercialization, and the Company currently does not have adequate personnel to
conduct   commercial-scale   manufacturing.   The  Company  intends  to  utilize
third-party facilities if and when the need arises or, if it is unable to do so,
to build or acquire commercial-scale  manufacturing facilities. The Company will
need to comply with regulatory requirements for such facilities, including those
of  the  FDA  and  HPB  pertaining  to  Good  Manufacturing   Practices  ("GMP")
regulations.  There can be no assurance that such facilities can be used, built,
or acquired on commercially  acceptable  terms,  that such facilities,  if used,
built,  or  acquired,  will be  adequate  for  the  Company's  long-term  needs.
Moreover,  there is no  assurance  that  successful  manufacture  of a drug on a
limited scale basis for investigational use will lead to a successful transition
to commercial,  large-scale production.  Small changes in methods of manufacture
may affect the chemical  structure of Ampligen and other such RNA drugs, as well
as their  safety and  efficacy.  Changes in  methods of  manufacture,  including
commercial scale-up,  can, among other things,  require new clinical studies and
affect orphan drug status,  particularly,  market  exclusivity  rights,  if any,
under the Orphan Drug Act.

     Lack of Marketing Experience and Capacity.

     The Company  currently has limited  marketing or sales  capability and does
not expect to establish a significant  direct sales  capability for at least the
next several years. To the extent that the Company determines not, or is unable,
to enter into marketing  agreements or third party  distribution  agreements for
its products,  significant  additional  resources  will be required to develop a
sales force and distribution  organization.  Pursuant to the SAB Agreement,  the
corporate  partner will be  responsible  for fielding an adequate sales force in
South America, Africa, United Kingdom, Australia and New Zealand.  Nevertheless,
there  can be no  assurance  that the  Company  will be able to  establish  such
arrangements,  under the SAB Agreement or otherwise,  on terms acceptable to the
Company,  if at all, or that the cost of establishing such arrangements will not
exceed any product revenues,  or that such  arrangements will be successful.  To
the  extent  that the  Company  enters  into  co-marketing  or  other  licensing
arrangements,  any  revenues  received by the Company  will be  dependent on the
efforts of third  parties,  and there can be no assurance that such efforts will
be successful.

     Rapid Technological Change and Substantial Competition.

     The  pharmaceutical  and biotechnology  industries are subject to rapid and
substantial technological change.  Technological competition from pharmaceutical
and  biotechnology  companies,  universities,  governmental  entities and others
diversifying  into the field is intense  and is expected  to  increase.  Most of
these entities have significantly greater research and development  capabilities
than the Company,  as well as  substantial  marketing,  financial and managerial
resources,  and represent significant  competition for the Company.  Acquisition
of, or investments in,  competing  companies by large  pharmaceutical  companies
could increase such competitors' financial, marketing and other resources. There
can be no assurance  that  developments  by others will not render the Company's
products or technologies  obsolete or noncompetitive or that the Company will be
able to keep pace with technological developments. Competitors have developed or
are in the process of developing technologies that are, or in the future may be,
the basis for competitive products.  Some of these products may have an entirely
different  approach or means of  accomplishing  similar  therapeutic  effects to
products being developed by the Company.  These  competing  products may be more
effective and less costly than the Company's products. In addition, conventional
drug therapy,  surgery and other more familiar treatments will offer competition
to the Company's products.  Furthermore,  many of the Company's competitors have
significantly  greater  experience than the Company in pre-clinical  testing and
human clinical trials of  pharmaceutical  products and in obtaining FDA, HPB and
other regulatory approvals of products.  Accordingly,  the Company's competitors
may succeed in  obtaining  FDA and HPB product  approvals  more rapidly than the
Company.  If any of the Company's products receive regulatory  approvals for any
indication and the Company commences  commercial sales of its products,  it will
also be  competing  with  respect  to  manufacturing  efficiency  and  marketing
capabilities, areas in which it has no experience. The Company's competitors may
possess or obtain patent protection or other  intellectual  property rights that
prevent, limit or otherwise adversely affect the Company's ability to develop or
exploit its products.

     Dependence upon Qualified and Key Personnel.

     Because of the specialized nature of the Company's business,  the Company's
success will depend,  among other  things,  on its ability to attract and retain
qualified management and scientific personnel. Competition for such personnel is

                                       11
<PAGE>

intense.  There can be no assurance that the Company will be able to continue to
attract or retain such persons.  The Company currently depends upon the services
of Dr. William A. Carter, its President, Chief Executive Officer and Chairman of
the Board,  Robert E.  Peterson,  its Chief  Financial  Officer and Dr. Carol A.
Smith, the Company's Director of Manufacturing and Process Development.  Certain
key  individuals  upon whom the Company  currently  depends,  including  but not
limited to the Company's Medical Director,  Dr. David Strayer, are not employees
of the  Company,  but  instead are  employees  of an  institution  with whom the
Company  has a  collaborative  at will  arrangement.  R.  Douglas  Hulse,  Chief
Operating  Officer,  is an employee of The Sage Group and serves in his position
under a written agreement.  In addition,  Dr. Smith and Mr. Peterson do not have
written employment  agreements with the Company.  The continued  availability to
the Company of the services of these  individuals  is subject to the policies of
the  institution  which  employs  them;  any change in such policies may have an
adverse effect upon the Company's  continued  retention of the services of these
individuals.  While the Company has an employment  agreement with Dr. William A.
Carter,  and has secured key man life  insurance  in the amount of $2 million on
the life of Dr. Carter,  the loss of Dr. Carter or other key personnel or of the
services of such employees of collaborators or the failure to recruit additional
personnel  as needed  could have a materially  adverse  effect on the  Company's
ability to achieve its objectives.

     Dependence on Third Parties.

     The Company's strategy for research,  development and  commercialization is
to  rely  in  part  upon  collaborative   arrangements  with  third  parties  in
appropriate  circumstances.  The  Company's  strategy  has led it to enter  into
various arrangements with universities,  research groups,  licensors and others.
The  Company  is  dependent  on a number of  important  arrangements  with third
parties.  In particular,  the Company  utilizes the services of employees of and
regularly makes use of certain equipment and facilities at Hahnemann  University
and has obtained certain of its technology for Oragen products through a license
with Temple  University,  which  agreement is alleged by Temple to be terminated
and which is the subject of a suit filed by the Company in November 1994.  There
can be no assurance that the Company will be able to negotiate  additional third
party arrangements or continue any existing  arrangements on terms acceptable to
the  Company,  if at all,  or that key  researchers  upon  whom the  Company  is
dependent will continue to be associated with such  universities  and/or to work
on the  Company's  products.  The loss of any such existing  arrangement  or key
researcher  could have a materially  adverse effect on the Company.  The Company
may  seek  a  significant  portion  of  its  future  capital  requirements  from
arrangements  with  pharmaceutical  companies or others pursuant to arrangements
under which,  among other things,  the Company would receive payment for certain
research and  development  activities in exchange for future  royalty  payments.
There can be no assurance  that any such  arrangements  will be established on a
basis  acceptable  to  the  Company,  if at  all,  or if  established,  will  be
scientifically  or  commercially   successful.   The  failure  to  achieve  such
arrangements on satisfactory terms could have a materially adverse effect on the
Company.  The Company is dependent  upon certain  third party  suppliers for key
components of its proposed  products and for substantially all of the production
process. The failure to continue  arrangements with such third parties or obtain
satisfactory  substitute  arrangements could have a materially adverse effect on
the Company.

     Impact of  Potential  Nasdaq  Delisting  on  Marketability  of  Securities;
Broker-Dealer Sales of the Company's Securities.

     The Company's  Common Stock and Class A Warrants trade on Nasdaq.  The NASD
has rules which  establish  criteria  for the initial and  continued  listing of
securities on Nasdaq.  Under the rules for initial listing,  a company must have
at least $4,000,000 in total assets, at least $2,000,000 in total  stockholders'
equity,  and a minimum bid price of $3.00 per share.  For  continued  listing on
Nasdaq,  a company must maintain at least  $2,000,000 in total assets,  at least
$1,000,000 in shareholders'  equity, and a minimum bid price of $1.00 per share.
The  Company  currently  has  approximately   $5,079,000  in  total  assets  and
approximately $3,750,000 in total shareholders' equity.

     If the  Company  were to continue to incur  operating  losses,  it might be
unable to maintain the standards for continued listing and the listed securities
could be subject to  delisting  from Nasdaq.  If the  Company's  securities  are
delisted,  trading in the delisted  securities  could thereafter be conducted on
the NASD Bulletin  Board or in the  over-the-counter  market in what is commonly
referred to as the "pink sheets." If this were to occur,  an investor would find
it more difficult to dispose of the Company's  securities or to obtain  accurate
quotations  as to the price of the  Company's  securities  and it could  have an
adverse effect on the coverage of news concerning the Company.  In addition,  if
the Company's  securities  were  delisted,  they would be subject to a rule that
imposes  additional sales practice  requirements on broker-dealers who sell such

                                       12
<PAGE>

securities to persons other than established  customers and accredited investors
(accredited  investors  are  generally  persons  having  net  worth in excess of
$1,000,000  or annual income  exceeding  $200,000,  or $300,000  together with a
spouse).  For transactions  covered by this rule, the broker-dealer  must make a
special  suitability  determination for the purchaser and must have received the
purchaser's  written  consent  to the  transaction  prior  to  sale,  as well as
disclosing  certain  information  concerning the risks of purchasing  low-priced
securities on the market for such  securities.  Consequently,  delisting,  if it
occurred,  would  adversely  affect the  ability of  broker-dealers  to sell the
Company's securities and would make subsequent financing more difficult.

     In order for the Company's securities to be included for trading on Nasdaq,
there must exist market makers and specialists, respectively, to support trading
in such securities. As of the date of this Prospectus,  several brokerage firms,
sufficient  to satisfy the  requirements  of Nasdaq are engaged in market making
activities with respect to the securities. There is no obligation on the part of
the brokerage  firm to continue to act as market  makers.  In the event that the
market makers and specialists  cease to function as such,  public trading in the
securities will be adversely affected or may cease entirely.

     Product Liability Exposure.

     The  Company  faces  an  inherent  business  risk of  exposure  to  product
liability  claims in the event that the use of its  products  results in adverse
effects.  Such  liability  might  result from claims made  directly by patients,
hospitals,  clinics or other consumers, or by pharmaceutical companies or others
manufacturing  such  products on behalf of the  Company.  While the Company will
continue to attempt to take appropriate  precautions,  there can be no assurance
that it will avoid significant product liability exposure.  The Company does not
currently  maintain any product liability  insurance  coverage;  accordingly,  a
significant  uninsured  risk exists  with  respect to product  liability  claims
arising out of the Company's human clinical trials.  The Company plans to obtain
product liability insurance coverage for its product distribution in Canada.

     Uncertainty of Health Care Reimbursement and Potential Legislation.

     The  Company's  ability to  successfully  commercialize  its products  will
depend,  in part,  on the  extent  to which  reimbursement  for the cost of such
products  and  related  treatment  will  be  available  from  government  health
administration   authorities,   private  health  coverage   insurers  and  other
organizations.  Significant uncertainty exists as to the reimbursement status of
newly  approved  health  care  products,  and from time to time  legislation  is
proposed which, if adopted,  could further restrict the prices charged by and/or
amounts  reimbursable to manufacturers of pharmaceutical  products.  The Company
cannot  predict  what,  if any,  legislation  will  ultimately be adopted or the
impact  of  such  legislation  on the  Company.  Reimbursement  from  government
agencies may become more restricted in the future.  The Company also understands
that there is  increasing  political  pressure  in Canada to limit  health  care
costs; no assurances can be given that the legislative or regulatory results, if
any,  of  such  pressure  will  not  have  an  adverse  impact  on the  Company.
Furthermore, there can be no assurance that third party insurance companies will
allow the Company to charge and receive payments for its products  sufficient to
realize an  appropriate  return on its  investment in product  development.  The
Company's  potential products  represent a new mode of therapy,  and the Company
expects that the costs associated with purchasing and administering its products
will be  substantial.  There can be no  assurance  that the  Company's  proposed
products,  if  successfully  developed,  will be  considered  cost  effective to
third-party payors, that reimbursement will be available or, if available,  that
the timing and amount of such payors'  reimbursement  will not adversely  affect
the Company's ability to sell its products on a profitable basis.

     Legal Proceedings

     In February 1991, Vanderbilt University advised the Company of its position
that University  employees were the inventors of an issued U.S. patent regarding
the use of Ampligen in combination with various other agents (including AZT) for
the  treatment  of HIV  infection.  See  Risk  Factors  -  "Disputes  and  Legal
Proceedings Related to Patent Rights".

     The Company is the  plaintiff in an action  captioned  HEM  Pharmaceuticals
Corp. v. Temple University of the Commonwealth  System of Higher  Education,  in
which the Company is seeking a declaratory judgment that the Company's licensing
agreement with Temple University was unlawfully terminated by Temple. Temple has
filed a motion to dismiss  this  lawsuit  upon the  grounds of lack of  personal
jurisdiction  and forum non-conviens.  In January 1995,  Temple filed a separate
litigation  against the Company  seeking  declaratory  judgment  that the Temple

                                       13
<PAGE>

Agreement was lawfully  terminated as of July 1, 1994, together with an award of
costs, including attorney fees. See Risk Factors "Disputes and Legal Proceedings
Related to Patent Rights".

     While the Company intends to vigorously  prosecute or defend against all of
the  litigation  described  above,  no assurance can be given as to the ultimate
outcome or the Company's  costs in bringing or defending  this  litigation,  and
with regard to the Temple litigation,  no assurance can be given that an outcome
adverse  to the  Company  will  not  have a  materially  adverse  effect  on the
Company's business or financial condition.

     Hazardous Materials.

     The Company's business involves the controlled use of hazardous  materials,
carcinogenic chemicals and various radioactive  compounds.  Although the Company
believes that its safety procedures for handling and disposing of such materials
comply in all material  respects  with the  standards  prescribed  by applicable
regulations, the risk of accidental contamination or injury from these materials
cannot be completely eliminated. In the event of such an accident or the failure
to comply with applicable regulations,  the Company could be held liable for any
damages that result,  and any such liability could be  significant.  The Company
does not maintain  insurance  coverage against such liabilities.  The Company is
also  subject  to a variety of laws and  regulations  relating  to  occupational
health and safety,  environmental  protection,  hazardous substance control, and
waste  management  and  disposal.  The  failure  to  comply  with  any  of  such
regulations could subject the Company to, among other things, third party damage
claims, civil penalties and criminal liability.

     Control  of  the  Company  by  Certain  Officers,   Directors  and  Current
Stockholders.

     The  officers,  directors  and  current  5%  stockholders  of  the  Company
beneficially own approximately  32.5% of the outstanding shares of Common Stock.
Pursuant to certain irrevocable  proxies,  Dr. William A. Carter,  President and
Chief  Executive  Officer of the  Company,  has the power to control the vote of
21.1% of the  outstanding  shares of Common Stock. As a result of such ownership
or voting  power  these  persons,  should  they  vote as a bloc,  may be able to
effectively  control all matters  requiring  approval by the stockholders of the
Company, including the election of directors.

     Possible Volatility of Stock Price.

     The stock market in general and biotechnology and pharmaceutical  stocks in
particular  have  from time to time  experienced  significant  price and  volume
fluctuations  that may be unrelated to the operating  performance  of particular
companies.  The market  price of the  Securities,  like the stock prices of many
publicly  traded  biotechnology  and smaller  pharmaceutical  companies,  may be
highly volatile. Announcements of technological innovations,  regulatory matters
or new commercial  products by the Company or its  competitors,  developments or
disputes concerning patent or proprietary rights,  publicity regarding actual or
potential  medical results relating to products under development by the Company
or its  competitors,  regulatory  developments  in both  the  U.S.  and  foreign
countries,  public concern as to the safety of pharmaceutical products, economic
and other  external  factors,  and  period-to-period  fluctuations  in financial
results, may have a significant impact on the market price of the Securities.

     Shares Eligible for Future Sale; Registration Rights.

     Of the 15,587,842  (32,750,313 upon the exercise of the outstanding Class A
Warrants,  other  warrants,  stock options and  conversion  of Preferred  Stock)
shares of Common Stock issued and  outstanding as of the date of this Prospectus
a significant number of such shares are "restricted  securities" as that term is
defined under Rule 144 promulgated  under the Securities Act. William A. Carter,
the Company's President, Chief Executive Officer and Chairman, has agreed not to
sell or transfer his securities for a period of 36 months  following  commencing
November 2, 1995. The  purchasers of the Bridge Loans who hold the  Bridgeholder
Options and the holder of 5,898 shares of Common Stock have agreed (with certain
exceptions)  not to sell or transfer their  securities for a period of 13 months
commencing  November  2, 1995.  The  Tisch/Tsai  Entities  have  agreed with the
Company (with  certain  exceptions  including  the transfer to immediate  family
members or related  entities)  not to sell or transfer  their  securities  for a
period of 18 months  commencing  November 2, 1995. In addition,  Canaan  Venture
Limited  Partnership and Canaan Venture Offshore  Limited  Partnership C.V. (the
"Canaan Entities"),  Michael Dubilier,  a principal  stockholder of the Company,
and three other stockholders  holding an aggregate of 1,253,227 shares of Common
Stock have agreed not to sell or transfer  their  securities  for a period of 18
months  commencing  November  2, 1995.  These  agreements  are  subject to early
termination  in the event of the early release of other  securityholders  of the
Company from lock-up agreements by the Company.  The holders of the remainder of

                                       14
<PAGE>

the  Company's  securities  are subject to  agreements  with the  Company  which
prohibit  the sale or  transfer  of such  securities  for a period  of 24 months
commencing   November  2,  1995,   without  the  Company's   consent  ("Lock  Up
Agreements").  As of October 25, 1995, the holders of  approximately  10% of the
Company's  securities  had not  executed  lock  up  agreements.  The  restricted
securities may be sold without registration  pursuant to Rule 144, under certain
circumstances.  In  addition,  the  Company  has  issued  warrants  to  purchase
2,080,000  shares of Common Stock (the "Rule 701 Warrants") in reliance upon the
provisions  of Rule 701 of the  Securities  Act,  pursuant to which,  in certain
circumstances,  such  Rule  701  Warrants  may be  sold.  The  holders  of these
securities are subject to Lock Up Agreements with the Company for a period of 24
months.  The sale,  or  availability  for sale,  of  substantial  amounts of the
Company's  securities  in the  public  market  subsequent  to  this  Prospectus,
including  the  securities  held by those  stockholders  who  have not  executed
24-month Lock Up Agreements and the Securities issued pursuant to Rule 144, Rule
701 or otherwise,  could  adversely  affect the market price of the Common Stock
and could impair the Company's  ability to raise additional  capital through the
sale of its equity  securities or debt financing.  The  availability of Rule 144
and Rule 701 to the holders of  restricted  securities  of the Company  would be
conditioned  on,  among  other  factors,  the  availability  of  certain  public
information concerning the Company.

     Adverse  Consequences  Associated with  Substantial  Shares of Common Stock
Reserved for Issuance Pursuant to Outstanding  Warrants,  Options and Conversion
of the Preferred Stock.

     The Company has reserved an aggregate of up to 17,162,407  shares of Common
Stock for  issuance  upon  exercise  of the Class A  Warrants,  warrants,  stock
options and upon conversion of the Preferred  Stock.  Holders of these warrants,
options and Preferred Stock are likely to exercise and convert them when, in all
likelihood,  the Company could obtain additional capital on terms more favorable
than those  provided  by such  convertible  securities.  Furthermore,  while the
convertible  securities are outstanding,  they may adversely affect the terms on
which the Company could obtain additional capital.  Should a significant portion
of such  convertible  securities  be exercised,  the  resulting  increase in the
amount of the Common Stock in the public  market may have the effect of reducing
the market price thereof.

     Conflicts of Interest.

     All of the members of the Company's  Scientific Advisory Board are employed
other than by the Company and may have  commitments to or consulting or advisory
contracts  with other  entities  (which may include  competitors of the Company)
that may limit  their  availability  to the  Company.  While each  member of the
Company's   Scientific   Advisory  Board  does  execute  a  non-disclosure   and
non-competition  agreement  with  respect  to  proprietary  data  that he or she
receives from the Company,  there can be no assurance that these agreements will
absolutely  protect  the Company  from the results of such data being  revealed,
accidentally or otherwise, by a member of its Scientific Advisory Board.

     Absence of Dividends.

     The Company intends to retain future earnings, if any, to provide funds for
the operations of its business and, accordingly,  does not anticipate paying any
dividends on its Common Stock in the reasonably foreseeable future.

                                       15
<PAGE>

                                 CAPITALIZATION

     The following  table sets forth the  capitalization  of the Company at June
30,  1996.  This  table  should  be read in  conjunction  with the  Consolidated
Financial Statements and related Notes appearing elsewhere in this Prospectus.


                                                                   June 30, 1996
                                                                   -------------
                                                (in thousands except share data)
                                                                     (unaudited)
                             
Notes Payable and Stockholder Loans                         
(including accrued related interest) ...............................     $    0
Stockholders' equity (deficit):
Common Stock, $.001 par value, 50,000,000 shares authorized;
  15,581,592 issued and outstanding ................................         16
Additional paid-in capital .........................................     47,953
Accumulated deficit ................................................    (45,291)
Total stockholders' equity .........................................      2,678
Total capitalization ...............................................      2,678

(1)  Assumes no exercise of (i) outstanding  options to purchase an aggregate of
     228,502 shares of Common Stock or of options to purchase  392,624 shares of
     Common  Stock which may be granted  under the  Company's  stock  option and
     stock  purchase  plans;  (ii)  outstanding  warrants to purchase  shares of
     Common Stock and Bridgeholders  Options to purchase Bridge Units consisting
     of 195,833 shares of Common Stock and 1,000,000 Class A Warrants;  or (iii)
     5,313,000  Class A Warrants  included in the Units;  (iv) other warrants to
     purchase Common Stock totaling  6,493,797 shares; or (v) 1,504,000 warrants
     to purchase  Common Stock issued in connection  with the Company's  initial
     public offering  ("IPO") and subsequent  financing.  See  "Management--1990
     Stock  Option  Plan,"  "--1992  Stock  Option  Plan and  "--Employee  Stock
     Purchase Plan, "Descriptions of Securities--Class A Redeemable Warrants .



                                       16
<PAGE>

                             SELECTED FINANCIAL DATA
                 (in thousands, except share and per share data)

     The  selected  financial  data  should  be read  in  conjunction  with  the
Consolidated  Financial Statements as of December 31, 1995 and 1994 and for each
of the years in the three year period ended December 31, 1995, the related notes
and the independent auditors' report. The consolidated  statements of operations
data for the  years  ended  December  31,  1991 and 1992,  and the  consolidated
balance sheet data at December 31, 1991,  1992 and 1993 are derived from audited
Consolidated  Financial  Statements  not included in this  Prospectus.  Selected
financial  data for the six months ended June 30, 1995 and 1996 are derived from
unaudited  condensed   consolidated   financial   statements  included  in  this
Prospectus.  The unaudited condensed consolidated  financial statements,  in the
opinion of management,  include all adjustments,  consisting of normal recurring
adjustments,  which the  Company  considers  necessary  to  present  fairly  the
financial position of the Company at June 30, 1996 and the results of operations
and cash flows for the six months  ended June 30, 1995 and 1996.  The results of
operations for the six months ended June 30, 1996 are not necessarily indicative
of results  that may be expected  for the full fiscal year ending  December  31,
1996.
<TABLE>
<CAPTION>
                                                                                                      Six Months Ended  
                                                        December 31,                                      June 30,
                                 ----------------------------------------------------------          ------------------
                                                                                                         (unaudited)
                                     1991       1992       1993          1994        1995           1995            1996
                                     ----       ----       ----          ----        ----           ----            ----
<S>                                 <C>        <C>        <C>           <C>           <C>            <C>             <C>
Consolidated Statements
of Operations Data:    
  Revenues                                                                                                         
    Research and Development .... $    --    $    --    $    48       $    76       $    66        $    33         $    18
    License fee .................      --         --         --           100         2,900          1,000              --
                                   ------     ------     ------        ------        ------         ------          ------
  Total Revenues ................      --         --         48           176         2,966          1,033              18
  Cost and expenses:                                                                                               
    Research and development ....   6,181      4,734      2,119         1,638         1,029            533             694
    General and administrative ..   2,469      2,825      3,347         2,618         2,880          1,274           1,236
                                   ------     ------     ------        ------        ------         ------          ------
    Total costs and expenses ....   8,650      7,559      5,466         4,256         3,909          1,807           1,930
    Debt conversion expenses ....      --         --     (1,215)          (10)         (149)          (149)             --
  Net interest income (expense) .     172       (322)    (1.069)       (1,043)         (748)          (449)            166
                                   ------     ------     ------        ------        ------         ------          ------
  Net loss ...................... $(8,478)   $(7,881)   $(7,702)      $(5,133)      $(1,840)       $(1,372)        $(1,746)
                                   ======     ======     ======        ======        ======         ======          ======
  Net loss per share ............      --         --         --       $  (.44)(1)   $  (.13)(1)    $  (.11)(1)      $ (.11)
  Weighted average                                                                                               
    number of shares outstanding                                                   
    used in computing                                                            
    net loss per share ..........       --          --          --  11,536,276(1  14,199,701(1)  13,047,506(1)  15,581,592
</TABLE>


(1)  Computed  on a  proforma  basis  described  in  Note 3 to the  Consolidated
     Financial Statements.

<TABLE>
<CAPTION>

                                                                      December 31,                            June 30,
                                             ----------------------------------------------------------     -----------
                                                                     (In Thousands)                         (unaudited)
                                               1991         1992         1993         1994         1995         1995
                                               ----         ----         ----         ----         ----         ----
<S>                                          <C>         <C>         <C>          <C>           <C>          <C>    
Consolidated Balance Sheet Data:
  Current assets .......................     $ 1,316     $  2,282    $      6     $     64      $11,354      $ 2,626
  Current liabilities ..................       1,714        2,750      10,599       13,043        8,279        1,306
  Total assets .........................       3,190        4,415      1,9126        1,651       12,700        4,043
  Long-term obligations ................         112        6,950          30           --           --           --
  Redeemable preferred stock ...........       2,000        2,536       2,866        3,238           --           --
  Accumulated deficit ..................     (20,988)     (28,869)    (36,571)     (41,704)     (43,544)     (45,291)
  Stockholders' equity (deficit) .......      $ (637)    $ (7,821)   $(11,579)    $(14,630)     $ 4,421      $ 2,678
</TABLE>


                                       17
<PAGE>

                           PRICE RANGE OF COMMON STOCK

     The Company's  Common Stock and Class A Warrants are traded on the National
Association of Securities  Dealers  Automated  Quotation System ("Nasdaq") under
the  symbols  HEMX and  HEMXW,  respectively.  The  Company's  Units,  each Unit
consisting  of one share of Common Stock and one Class A Warrant (the  "Units"),
traded on Nasdaq  during the period from November 2, 1995 to August 19, 1996, at
which time they were voluntarily delisted.  The Company's Common Stock and Class
A Warrants  were listed for trading on Nasdaq on July 12,  1996.  The  following
table sets forth the high and low bid  prices  for the  Company's  Units for the
periods  indicated as reported by Nasdaq. On September 9, 1996, the high and low
bid price for the Common  Stock was $3.625 and $3.5625,  respectively.  The high
and low bid price for the Class A Warrants on such date was $1.375 and $1.21875,
respectively.

                                      UNIT

1995                                                High             Low
- -----                                               -----           ----
      Quarter ended 12/31 ...................       8 1/2           2

1996
- ----
      Quarter ended 3/31 ....................       3 9/16          1 1/2
      Quarter ended 6/30 ....................       6               2 11/16


     On May 15,  1996,  there were  approximately  331  holders of record of the
Company's  Common  Stock.  The number of record  holders do not include  holders
whose securities are held in street name.

                                    DIVIDENDS

     The Company does not currently  pay  dividends on its Common  Stock.  It is
management's  intention not to declare or pay dividends on the Common Stock, but
to retain  earnings,  if any, for the  operation  and expansion of the Company's
business.

     The  holders  of its Series D  Preferred  Shares  are  entitled  to certain
dividend payments upon declaration by the Company's Board.

                                 USE OF PROCEEDS

     The Company  intends to utilize the proceeds  received from the exercise of
the 890,543  Warrants,  estimated to be $4,064,900 if all Warrants are exercised
in full, for general  corporate and working  capital  purposes.  There can be no
assurance that any of the Warrants will be exercised.  The foregoing  represents
the Company's  best estimate of its use of proceeds  generated from the possible
exercise of Warrants  based upon the current  state of its business  operations,
its current plans and current economic and industry  conditions.  Any changes in
the use of  proceeds  will  be  made at the  sole  discretion  of the  Board  of
Directors of the Company.

                                       18
<PAGE>

                MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
                       CONDITION AND RESULTS OF OPERATIONS

     The following  discussion and analysis  should be read in conjunction  with
the Consolidated  Financial  Statements and related notes contained elsewhere in
this Prospectus.

GENERAL

     Hemispherx Biopharma, Inc. and subsidiaries (the "Company"), formerly known
as HEM  Pharmaceuticals  Corp., is a  pharmaceutical  company using nucleic acid
technologies to develop therapeutic products for the treatment of viral diseases
and certain  cancers.  The Company's drug technology  uses  specially-configured
ribonucleic  acid  (RNA).  the  Company's  double-  stranded  RNA drug  product,
trademarked  Ampligen,  is in human clinical development for various therapeutic
indications.  The efficacy and safety of Ampligen is being developed  clinically
for three  anti-viral  indications:  myalgic  encephalomyelitis,  also  known as
chronic fatigue  syndrome  (ME/CFS)(Phase  II clinical trial completed and Phase
II/III  clinical trial  authorized);  human  immunodeficiency  virus  associated
disorders (Phase II clinical trial  authorized);  and chronic  hepatitis B virus
infection  (HBV)(Phase  I/II  clinical  trial in process).  The Company also has
clinical  experience  with Ampligen in patients with certain  cancers  including
renal cell carcinoma (kidney cancer) and metastatic malignant melanoma.

     The Consolidated  Financial  Statements include the financial statements of
Hemispherx  Biopharma,  Inc.  and its three  wholly-owned  subsidiaries,  BioPro
Corp.,  BioAegean  Corp.  and Core  BioTech  Corp.  which were  incorporated  in
September  1994 for the purpose of developing  technology for ultimate sale into
certain   non-pharmaceutical   specialty   consumer  markets.   All  significant
intercompany balances and transactions have been eliminated in consolidation.

     Since fiscal 1994 , the Company has focused on  negotiating  and  executing
the South African Breweries (SAB) Agreement, exploring potential partnerships to
pursue  additional  clinical  trials  with  special  emphasis on the HBV disease
indication,  restructuring  certain of its outstanding debt, conducting the 1994
Common Stock  Financing  and the Bridge  Financing and preparing for its Initial
Public  Offering  ("IPO").  In 1996 and beyond,  the Company expects to add some
additional  personnel to augment its general and  administrative  activities  in
support of  increased  efforts for  research  and  development,  production  and
regulatory activity.

     The Company  expects to continue its research and clinical  efforts for the
next several  years with some  benefit of certain  revenues  from cost  recovery
programs,  notably in Canada and Belgium.  Beginning in October,  1993,  limited
revenues were initiated in Belgium from sales under the cost recovery  provision
for  conducting  clinical  tests in  ME/CFS.  Overall,  the  Company  expects to
continue  incurring  losses over the next  several  years due to clinical  costs
which are only partially  offset by revenues and potential  licensing fees. Such
losses may fluctuate  from quarter to quarter as a result of  differences in the
timing of  significant  expenses  incurred and receipt of licensing  fees and/or
revenues.

Result of Operations

Six months ended June 30, 1996 versus the six months ended June 30, 1995

     The Company reported a net loss of $1,746,137 for the six months ended June
30, 1996 versus a net loss of  $1,372,275  for the same period in 1995.  Several
factors contributed to the increased loss of $373,862.

     Revenues were down $1,014,891 for the six months of 1996 as the results for
the six months ended June 20, 1995 include $1,000,000 of licensing fees recorded
in connection  with  SAB/Bioclones  agreement.  Research and  development  costs
increased  by $161,295 in the six months  ended June 30, 1996 due  primarily  to
increased  efforts on the Canadian and Belgium  clinical  programs.  General and
administrative  expenses of  $1,235,566  in the first six months of 1996 reflect
the  benefit of a one time gain in the  amount of  $318,757  resulting  from the
forgiveness of certain lease obligations in connection with the restructuring of
the Company's principal office lease.  Excluding this one time gain, general and
administrative expense in the first six months of 1996 exceeded related expenses
in the first  quarter of 1995 by $279,920.  This  increase can be  attributed to
consulting fees,  public  relations,  printing expenses and director and officer
insurance  premiums.  All  of  which  more  or  less  are  associated  with  the
administration  of a  public  company.  The  increase  is  partially  offset  by
decreases in rent expense and amortization of patents.

                                       19
<PAGE>

     Debt conversion costs of $149,384 and interest expense of $451,448 incurred
in 1995 did not recur in 1996 due to the fact that all the  associated  debt was
converted or repaid in 1995.  Interest  income  increased by $162,655 due to the
earnings on the remaining IPO funds.

Years Ended December 31, 1995 versus 1994

     The Company  reported  revenues of  $2,965,910  in 1995 versus  $175,758 in
1994. In 1995, the Company received and recognized  $2,900,000 in licensing fees
resulting  from the  SAB/Bioclones  agreements  as compared to $100,000 in 1994.
Revenues from cost recovery  clinical trials were $65,910 in 1995 versus $75,758
in 1994.  Net  losses of  $1,839,840  were  incurred  in 1995  versus  losses of
$5,133,051  in  1994.  The  year to year  improvement  of  $3,293,211  basically
consists of: (1)  $2,790,152 in higher  revenues  primarily due to the licensing
fees received from the SAB Agreement,  (2) $609,107 or 37% in lower research and
development costs as a result of the winddown and completion of certain clinical
trials, (3) higher general and administrative costs of $262,681 or 10% basically
due to increased  legal and  professional  fees  associated  with various  legal
matters and the  Company's IPO efforts,  (4) $138,884 in higher debt  conversion
expense relating to certain debt  restructuring  that took place in April, 1995,
and (5) lower net  interest  expense in the amount of $295,517 or 28% due to the
paydown of certain notes from the proceeds of the IPO.

Years ended December 31, 1994 versus 1993

     In 1994, the Company's net loss was $5,133,051 as compared to a net loss of
$7,702,050 in 1993. The $2,568,999  improvement resulted from increased revenues
of $127,758, reduced research and development costs of $481,127, reduced general
and administrative  costs of $729,714,  reduced conversion expense of $1,204,000
and reduced net interest expense of $26,400.

     The Company had  revenues of $48,000 in 1993  compared to $175,758 in 1994.
In 1994 the Company  received  $100,000 in licensing fees in accordance with the
terms  of the SAB  Agreement.  Additionally,  cost  recovery  revenues  from the
Belgium clinical trials increased by approximately  $29,000.  Operating expenses
declined  22% in 1994 as  compared  to 1993,  primarily  as a result of  reduced
research  costs  and  efforts  to  correspondingly   downsize  the  general  and
administrative  costs.  Research and development  costs declined $481,000 or 23%
primarily due to the completion of certain  clinical trial efforts.  General and
administrative  expenses declined  approximately  $730,000 or 22% as a result of
restructuring and downsizing the Company's  overhead to support the needs of the
Company and reduced research and development activity. This restructuring in the
fall of 1993 produced lower wages and salaries,  telephone  expense,  travel and
other  expenses  in  1994.  In  addition,  in 1993  the  Company  incurred  debt
conversion  expenses of $1,214,500 as a result of the conversion of certain debt
to equity.

Liquidity and Capital Resources

     Cash and cash  equivalents  at June 30,  1996 was  $2,538,880  compared  to
$11,291,167  at December  31,  1995.  The  December  31,  1995  amount  included
$5,818,733  of restricted  cash as ordered by the Court in  connection  with the
Cohn litigation. In February 1996, the Company agreed to repay the Cohn note and
settle  the  Cohn  litigation.   In  exchange  for  mutual  releases  and  other
consideration,  the Company paid Mr. Cohn  $6,450,000  on March 21,  1996.  This
figure  includes  $4,920,000  in principal  and  $1,530,000  for legal and other
costs.  The  Company  retired  much  of  the  outstanding  vendor  and  supplier
obligations  from the  proceeds  from the SAB  Agreement,  the  Bridge  Loan and
revenue  from sales  under the cost  recovery  programs.  In  addition,  certain
officers,  directors  and  shareholders  have  entered  into  the  1995  Standby
Financing  Agreement pursuant to which they have agreed to provide funding up to
$5,500,000 to the Company in the event that existing and additional financing is
insufficient  to cover the cash needs of the Company  through  December 31, 1996
Moreover,  because of the Company's long-term capital requirements,  it may seek
to access the public equity market whenever conditions are favorable, even if it
does not have an  immediate  need  for  additional  capital  at that  time.  Any
additional  funding may result in  significant  dilution  and could  involve the
issuance  of  securities  with  rights  which are  senior  to those of  existing
stockholders.  The  Company  may  also  need  additional  funding  earlier  than
anticipated,  and the Company's cash requirements in general may vary materially
from those now planned,  for reasons  including,  but not limited to, changes in
the Company's research and development  programs,  clinical trials,  competitive
and technological  advances, the regulatory process, and higher than anticipated
expenses  and lower than  anticipated  revenues  form  certain of the  Company's
clinical trials as to which cost recovery from participants has been approved.

                                       20
<PAGE>

     The Company has financed its  operations  since  January 1, 1992  primarily
through the IPO,  private  placement  of equity and debt  securities,  equipment
lease  financing  interest  income,  and  revenues  from  licensing  and royalty
agreements.  Net cash  provided by  financing  activities  from  January 1, 1992
through  March 31, 1996  totaled  $29.7  million,  including  approximately  $16
million in net proceeds  from the IPO,  $3.3  million in net  proceeds  from the
private placement of Common Stock and Preferred Stock and $10.6 million from the
private placement of debt securities and warrants.  Since December 31, 1993, the
Company has raised  approximately  $20.2 million in the form of debt securities,
warrants,  and the sale of stock.  $16 million of the $20.2 million raised since
December 31, 1993 represents  approximate net proceeds from the IPO in which the
Company sold 5,313,000  Units,  each consisting of one share of Common Stock and
one  Class  A  Warrant.   See  "Certain   Transactions"   and   "Description  of
Securities--Class A Redeemable Warrants."

     In February 1995, the Company entered into a settlement  agreement with the
Tisch/Tsai   Entities  to  restructure  the  December  1992  and  February  1993
promissory  notes in the aggregate  principal  amount of  $2,400,000  and settle
certain  threatened claims made by the Tisch/Tsai  Entities against the Company.
This  debt  restructuring  consisted  of (i) the  repayment  by the  Company  of
$1,200,000 in principal,  (ii) the issuance of replacement  Tisch/Tsai  Notes in
the aggregate  principal  amount of $600,000 to the  Tisch/Tsai  Entities  which
notes were  retired on November  2, 1995,  (iii) the  conversion  of $600,000 of
principal into 172,414  shares of Series C Preferred  Stock at the rate of $3.48
per share,  (iv) the amendment and  restatement  of certain  warrants  issued in
connection  with the original notes in order to increase the number of shares of
stock  issuable  thereunder  by 64,000  shares and to provide  for  warrants  to
purchase a total of 144,000 shares of Common Stock at an exercise price of $2.00
per share,  which warrants are exercisable  until December 31, 1997, and (v) the
release by all parties of any claims.  The  replacement  notes were secured by a
pledge  of  stock by the  Company's  President,  Chairman  and  Chief  Executive
Officer.  The Company may have been in default of the Tisch/Tsai  Notes due to a
possible default under certain other notes payable by the Company.  Because such
other notes have been  extended,  the Company does not believe that any claim of
default can be made under the Tisch/Tsai Notes.

     In March 1995, the Company issued a promissory note to Gerald A. Brauser in
the  amount  of  $200,000,  bearing  interest  at a rate  of 12% per  year  (the
"Original  Brauser  Note").  In connection  with the Original  Brauser Note, the
Company agreed to pay attorney fees and miscellaneous  expenses of approximately
$12,000.  In connection  with the Original  Brauser Note,  the Company  issued a
warrant to purchase 50,000 shares of Common Stock at a price of $1.75 per share.
The Original Brauser Note was  collateralized by the Company and Bridge Ventures
with the Company's  patent  estate.  In May 1995, the Company  restructured  the
Original  Brauser Note in exchange for the Company  issuing to Mr. Brauser (i) a
promissory note, collateralized by the Company's patent estate, in the amount of
$100,000  bearing  interest at a rate of 12% per year (the "New Brauser  Note"),
(ii) a warrant to purchase 25,000 shares of Common Stock at a price of $1.75 per
share, (iii) 100,000 shares of Common Stock at $.50 per share, and (iv) a Bridge
Loan in the  amount of  $50,000  as well as a  Bridgeholder  Option to  purchase
33,333 Bridge Units.  The New Brauser Note was  originally due on the earlier of
June 30, 1995 or the Company's  receipt of a certain payment from  SAB/Bioclones
but was amended to extend the date on which  repayment was due on the earlier of
November 2, 1995 or the closing of the IPO.  The notes were  retired on November
2, 1995.

     The June 30,  1996,  cash on hand was  $2,538,880  which  does not  include
$5,475,000 received after June 30, 1996 in connection with the private placement
of Series D Preferred  Stock. At June 30, 1996, the Company had accounts payable
and accrued current liabilities of approximately $1,365,000.

     Net  cash  used  by  the  Company  for  operating  activities  amounted  to
approximately  $5,170,638 in 1993,  $1,952,145  in 1994,  $1,939,219 in 1995 and
$3,667,367 for the six months ended June 30, 1996.

     The Company has incurred and will  continue to incur  substantial  research
and  development  costs and  manufacturing  costs.  In addition,  if the Company
receives  regulatory  clearance for the  commercial  sale of its  products,  the
Company will incur substantial expenditures to develop its manufacturing, sales,
marketing and  distribution  capabilities  to the extent such  functions are not
supplied by third parties. The Company will require substantial additional funds
for  these  purposes   through   additional   equity  and/or  debt   financings,
collaborative  arrangements  with corporate  partners or from other sources.  No
assurances  can be given that such  additional  funds will be available  for the
Company to finance its  development on acceptable  terms, if at all. If adequate
funds are not available  from  additional  sources of  financing,  the Company's
business will be materially  adversely  affected and the Company may not be able
to continue operations. "See Business--Company Strategy" and "Risk Factors."

                                       21
<PAGE>

     The  Company's  future  capital  requirements  will depend on many factors,
including  scientific  progress in its research,  drug discovery and development
programs,   the  magnitude  of  these  programs,   the  length  and  expense  of
pre-clinical  and  clinical  trials,  the time and  costs  involved  in  seeking
regulatory  approvals,  the costs involved in filing,  prosecuting and enforcing
patent claims,  competing technological and market developments,  changes in the
existing  collaborative  research  relationships,  the ability of the Company to
establish product development  arrangements,  the cost of manufacturing scale-up
and effective commercialization activities and arrangements.  The failure by the
Company  to  obtain  regulatory  approval  for any  product  will  preclude  its
commercialization. There can be no assurance that necessary regulatory approvals
will be obtained. See "Risk Factors" and "Business--Government Regulation."

     Pursuant to the terms of the SAB  Agreement,  the  Company has  received an
aggregate of $3,000,000 through July 10, 1996.

New Accounting Pronouncements

     In March 1995,  the  Financial  Accounting  Standards  Board (FASB)  issued
Statement  of  Financial  Accounting  Standards  No.  121  "Accounting  for  the
Impairment of  Long-Lived  Assets and for  Long-Lived  Assets to be Disposed Of"
(Statement 121). Statement 121 provides guidance for recognition and measurement
of  impairment  of  long-lived  assets,  certain  identifiable  intangibles  and
goodwill  related  both to assets to be held and used and assets to be  disposed
of. The Company is required to adopt  Statement 121 for the year ended  December
31, 1996. The Company has not yet quantified the impact, if any, of the adoption
of Statement 121 may have on its consolidated financial statements.

     In October 1995, the FASB issued Statement 123, "Accounting for Stock-Based
Compensation"  (Statement  123).  Statement  123 allows  companies the option to
retain the current accounting method for recognizing  stock-based expense in the
financial  statements or to adopt a new accounting method based on the estimated
fair value of employee stock  options.  Companies that do not adopt the new fair
value  based  method will be required  to provide  expanded  disclosures  in the
footnotes.  The Company is required  to adopt  Statement  123 for the year ended
December  31,  1996.  The  Company  expects to  continue  applying  its  current
accounting   method  and  upon  adoption  will  present  the  required  footnote
disclosures.

                                       22
<PAGE>
 
                                    BUSINESS

General

     The Company is a pharmaceutical  company using nucleic acid technologies to
develop  therapeutic  products for the  treatment of viral  diseases and certain
cancers.   Nucleic   acid   compounds   represent  a  potential   new  class  of
pharmaceutical  products that are designed to act at the molecular level for the
treatment  of  human   disease.   The   Company's   drug   technology   utilizes
specially-configured  RNA.  The  Company's  double  stranded  RNA drug  product,
trademarked Ampligen, which is administered intravenously,  is in human clinical
development  for  various  therapeutic  indications.  Based  on the  results  of
pre-clinical studies and clinical trials, the Company believes that Ampligen may
have  broad-spectrum  anti-viral and anti-cancer  activities.  Over 300 patients
have received  Ampligen in clinical trials  authorized by the FDA at over twenty
clinical trial sites across the United States,  representing the  administration
of more than 40,000 doses of this drug.

     Ampligen is being developed  clinically for three  anti-viral  indications:
HBV (Phase I/II clinical trial), HIV associated disorders (Phase II), and ME/CFS
(Phase II/III).  The Company's  business strategy is designed around seeking the
required regulatory  approvals which will allow the progressive  introduction of
Ampligen  for HIV  followed  by HBV and ME/CFS in the U.S.,  Canada,  Europe and
Japan. There can be no assurance that Ampligen will receive regulatory  approval
for any of such disorders.  Ampligen has received Orphan Drug  designation  from
the FDA for four  indications  (AIDS,  renal  cell  carcinoma,  chronic  fatigue
syndrome  and invasive  malignant  melanoma).  The Company is also  developing a
second generation RNA drug technology,  termed Oragen compounds,  with potential
for broad spectrum antiviral activity by oral administration.

     The Company has been issued  certain  patents on the use of Ampligen  alone
and Ampligen in combination  with certain other drugs,  including AZT, ddI, ddC,
interferon  and/or  IL-2,  for the  treatment  of HIV. The Company has also been
issued a patent on the use of Ampligen in combination  with certain other drugs,
including  ddI and  ganciclovir,  for the  treatment of HBV and HCV and a patent
which affords  protection on the use of Ampligen in patients with ME/CFS.  While
the Company does not have any ownership rights to these other drugs,  such drugs
may be readily  purchased for  combinational  treatment  regimens and thus,  the
Company believes that the lack of such ownership rights will not have a material
adverse effect on the Company;  however, no assurance can be given. To date, the
Company  has not  been  issued  any  patents  in the U.S.  regarding  the use of
Ampligen for  treatment  of the cancers  which the Company has sought to target.
The Company's applications for such patents are currently pending; no assurances
can be given  that such  applications  will be  allowed.  See  "Business--Patent
Rights."

     The WHO estimates that there are approximately 300 million chronic carriers
of HBV worldwide. More than 40% of the persistently infected persons who survive
to adulthood will die from cirrhosis,  hepatocellular  carcinoma (liver cancer),
or some other  consequence  of their  infection.  In the U.S. alone there are an
estimated 1.25 million  carriers.  HBV is one of the several  viruses that cause
human  hepatitis  or  inflammation  of  the  liver.  The  Company  is  presently
conducting a Phase I/II clinical trial of Ampligen in the U.S. for the treatment
of  chronic  HBV  infection  at  Stanford   University  and  the  University  of
Pennsylvania.  A significant  reduction in viral  components and  improvement in
liver  function  has been  noted  during the course of the study to date and the
drug has been generally well tolerated. At present, interferon-alpha is the only
approved product for this disease;  however,  approximately 75% of patients with
chronic HBV ultimately fail to respond to interferon-alpha.  The global sales of
interferon are presently  estimated at more than $1 billion,  largely because of
its use in liver infections.

     The CDC has estimated that approximately one million people in the U.S. are
infected with HIV,  excluding  patients who have progressed to fully symptomatic
AIDS.  The WHO has estimated  that 30 to 40 million people will be infected with
HIV worldwide by the year 2000. The Company is presently in Phase II of clinical
development  of  Ampligen  in the U.S.  for the  treatment  of  symptomatic  HIV
infection.

     ME/CFS is a condition  recently  recognized by the CDC and characterized by
unexplained  fatigue  or chronic  illness  for six months or longer for which no
cause has been identified after a thorough medical work-up.  Although the CDC is
presently  conducting studies to determine more exactly the rate of incidence of
ME/CFS,  the CDC's latest estimate of the prevalence rate of this disease in the
U.S. is in excess of 200 per 100,000  population.  In November 1992, the Company
received approval from the HPB of Canada's Department of Health and Welfare, the
federal drug  regulatory  agency in Canada,  to conduct an  open-label  clinical
trial of  Ampligen  in  patients  with  severely  debilitating  ME/CFS.  In this
clinical  trial,  the HPB has authorized the Company to charge  patients for the
cost of the Ampligen  administered.  The Company is presently  receiving limited

                                       23
<PAGE>

revenues  from sales in  Belgium  under a similar  cost  recovery  program.  The
Company has also received  authorization from the FDA, in the U.S., and the HPB,
in Canada,  to initiate a Phase  II/III  clinical  trial of Ampligen in patients
with ME/CFS. The Company is unaware of any  investigational  new drugs which are
currently at comparable stages of clinical development for ME/CFS.

     The Company also has clinical  experience  with  Ampligen in patients  with
certain cancers,  including renal cell carcinoma  (kidney cancer) and metastatic
malignant melanoma.  Based on estimates prepared by the American Cancer Society,
the  Company  anticipates  that  approximately  25,000  new cases of renal  cell
carcinoma  will be  diagnosed  in the U.S.  in 1996.  In March and  June,  1993,
respectively,  the Company was  authorized by the FDA, in the U.S., and the HPB,
in Canada,  to initiate a Phase II/III  clinical trial of Ampligen in renal cell
carcinoma patients.  Recently, the HPB authorized the Company to proceed with an
open-label  clinical trial of Ampligen for renal cell  carcinoma in Canada.  The
HPB has authorized  the Company to charge  patients for the cost of the Ampligen
administered in this clinical trial. Based on estimates prepared by the American
Cancer Society, the Company also anticipates that approximately 34,000 new cases
of  malignant  melanoma  will be  diagnosed  in the U.S. in 1996.  Data from the
American Cancer Society and the World Health Organization indicate that both the
incidence and mortality from malignant  melanoma are rising steadily among white
populations  throughout the world. In the past decade, the incidence of melanoma
has increased faster than that of any other cancer except lung cancer in women.

     From its  inception in 1966 to the early  1980s,  the  Company's  principal
business was to supply research support via contracts received  principally from
the  NIH.  In the  early  1980s,  the  Company  redirected  its  efforts  to the
development  of nucleic acid  pharmaceutical  technology and since that time the
Company has devoted  substantially  all of its resources to its  research,  drug
discovery and development programs.

     In October 1994, the Company entered into the SAB Agreement with respect to
codevelopment of various RNA drugs,  including  Ampligen,  for which the Company
has previously obtained international patent protection.  The SAB Agreement,  as
amended,  provides that the Company will provide SAB/Bioclones with an exclusive
manufacturing  and marketing license for certain Southern  hemisphere  countries
(including  certain  countries in South America) as well as the United  Kingdom,
Ireland, Africa,  Australia,  Tasmania, New Zealand, and certain other countries
and territories.  In exchange for these marketing and distribution  rights,  the
SAB  Agreement  provides  for:  (a) a $3 million  cash  payment to the  Company,
payable in installments upon the occurrence of certain milestones  including the
transfer  of  certain  technical  documents,  some of which  have  already  been
transferred;  (b) the  formation  and  issuance  to the  Company of 24.9% of the
capital  stock of a  company  which  is shall  developing  and  operating  a new
manufacturing  facility  for RNA drugs  constructed  by  SAB/Bioclones,  and (c)
royalties on all sales of the  Company's  products in the  licensed  territories
after the first $50 million of sales. In addition,  SAB/Bioclones  agrees to use
its best  efforts  to pursue  the  marketing  approval  of  Ampligen  for HBV in
Australia,  South Africa,  Brazil, and the United Kingdom, as well as to perform
(at its own  expense) a phase III study of Ampligen in chronic HBV  infection in
South Africa,  which clinical study is to be performed pursuant to U.S. FDA good
clinical  practice  and  good  laboratory  practice  guidelines  and  standards.
SAB/Bioclones will be granted a right of first refusal to manufacture and supply
to the Company the drug  product  required  for not less than  one-third  of its
world-wide  sales of Ampligen  (after  deducting  SAB/Bioclones-related  sales).
According  to its most recent  annual  report,  SAB is a  multinational  holding
company  investing in and taking  management  responsibility  for a portfolio of
business in beer and beverages retailing,  hotels and the manufacture of certain
mass market  consumer goods,  together with strategic  investments in businesses
which support its  mainstream  interests.  As of July 10, 1996,  the Company had
received $3,000,000 pursuant to the SAB Agreement.

Nucleic Acid Pharmaceuticals

     The Company  believes that nucleic acid  compounds  represent a potentially
new class of  pharmaceutical  products that are designed to act at the molecular
level for the treatment of human  disease.  There are two forms of nucleic acid:
deoxyribonucleic  acid ("DNA") and RNA.  DNA is a group of  naturally  occurring
molecules found in chromosomes,  the cell's genetic machinery. RNA is a group of
naturally occurring  informational molecules which orchestrate a cell's behavior
and which  regulate  the action of groups of cells,  including  the cells  which
comprise the body's immune  system.  RNA directs the  production of proteins and
regulates certain cell activities  including the activation of otherwise dormant
cellular  defenses against viruses and tumors.  To date, the Company has focused
its efforts on developing two classes of RNA  pharmaceuticals,  Ampligen, a high
molecular  weight double stranded  intravenous  drug, and Oragen,  low molecular
weight double or single stranded drugs intended for oral administration.

                                       24
<PAGE>

Company Strategy

     The Company's  business  strategy is designed  around  seeking the required
regulatory  approvals which will allow the progressive  introduction of Ampligen
for HIV followed by HBV and ME/CFS in the U.S., Canada, Europe and Japan and the
Southern hemisphere countries including South Africa, Australia and countries in
South  America.  Within the next year,  the Company  expects to receive  limited
revenues through  cost-recovery  from patients who become enrolled in a clinical
trial of Ampligen for severely  debilitating ME/CFS in Canada (authorized by the
HPB) and a  clinical  trial of  Ampligen  for  renal  cell  carcinoma  in Canada
(authorized by the HPB) and has begun to receive  revenues from a clinical trial
of  Ampligen  for ME/CFS in  Belgium  (authorized  by the  Belgian  Minister  of
Health).  See  "Business--Ampligen."  To date,  the  Company has not granted the
right to market any of the Company's drug products to any third party other than
SAB/Bioclones,  Rivex and certain  commercial  rights to its  subsidiaries.  See
"Business--General," "--Marketing" and "--Subsidiary Companies."

     As part of its  development  strategy,  the Company has initiated  clinical
trials of Ampligen in the U.S.  and Belgium and has been  authorized  to conduct
clinical  trials in Canada and  Ireland.  Ampligen  is being  tested in Phase II
trials in Belgium for ME/CFS, with the active drug administration phase ongoing.
In the U.S.,  the Company is evaluating  and monitoring the duration of the drug
benefit period in certain HIV patients who completed a Phase II trial as well as
monitoring the drug benefit period in certain  patients who previously  received
Ampligen in a Phase I/II trial in HBV  diseases.  The Company  expects  that the
monitoring  will help the Company to determine  and evaluate the duration of the
potential  drug benefit  period.  In  connection  with the foreign  trials,  the
Company  has  received  export  authorization  from the FDA to ship  Ampligen to
Belgium  (for  ME/CFS)  and Canada  (for  ME/CFS and renal cell  carcinoma)  for
clinical  trials which the Company  either has initiated or plans to initiate in
those  countries  for ME/CFS in 1995,  1996 or 1997.  In Japan,  there is a high
incidence of chronic HBV.  Based on data obtained  from the clinical  testing of
Ampligen as a possible  therapy for HBV,  the Company  anticipates  focusing its
efforts  in Japan on the  implementation  of  clinical  trials of  Ampligen  for
chronic HBV. The Company's current strategy is to seek a partnering  arrangement
with  a  Japanese  entity  and,  subject  to  seeking  and  obtaining  necessary
approvals, to conduct trials in Japan through such an arrangement.

     As  indicated  above,  the HPB has approved the  Company's  application  to
conduct an open-label  clinical  trial of Ampligen at specified  sites in Canada
for up to 200 patients with severely  debilitating  ME/CFS.  Clinical  sites are
presently  being  pursued.  The HPB has also  recently  approved  the  Company's
application  to conduct an  open-label  clinical  trial of Ampligen at specified
sites in  Canada  for up to 200  patients  with  renal  cell  carcinoma  (kidney
cancer). In these clinical trials, the HPB has authorized the Company to require
participants to pay the Company for the cost of the Ampligen  administered.  The
Company  understands  that patients may not be reimbursed for these costs by any
Canadian authority or from any private insurer. Due to the inability of patients
to receive  reimbursement,  the Company  may not be able to charge a  sufficient
price  for  the  Ampligen  used  in  such  tests.  The  Company  cannot  promote
participation  in the trial or sale of Ampligen  through  advertisements  to the
general public.

     Subject to obtaining  the  necessary  regulatory  approvals for the sale of
Ampligen  in the home  infusion  (non-hospital)  segment of the U.S.  market and
favorable   results  of  clinical   trials,   which  cannot  be  assured,   (see
"Business--Government  Regulation"),  the Company may utilize a service provider
to execute the direct marketing activities, conduct physical distribution of its
products,  and handle billing and  collections.  The Company  believes that this
approach  may  facilitate  the  generation  of revenues  without  incurring  the
substantial  product  launch costs  associated  with the  employment of a direct
sales force.  Furthermore,  this approach will enable the Company to retain many
options  for  future  marketing  strategies.  The  Company  does  not  currently
anticipate  devoting  substantial  resources to the  development  of an in-house
sales force.

     In Europe, the Company plans to adopt a country-by-country  and, in certain
cases, an indication-by-indication,  marketing strategy due to the heterogeneity
of governmental regulations and alternative distribution systems in these areas.
The Company anticipates that it will adopt an indication-by-indication marketing
strategy in Japan.  The marketing  alternatives  the Company intends to consider
include  joint  venture  arrangements  with  pharmaceutical  companies  and  the
co-marketing of the Company's products on a selective basis.

     Pursuant to the SAB  Agreement,  the Company has granted  SAB/Bioclones  an
exclusive marketing license for certain Southern hemisphere countries (including
countries  in South  America) as well as the United  Kingdom,  Ireland,  Africa,
Australia, Tasmania, New Zealand and certain other countries and territories. In
addition,  SAB has  agreed  to use its best  efforts  to  pursue  the  necessary
approval to market Ampligen for HBV in Australia,  South Africa, Brazil, and the

                                       25
<PAGE>

United  Kingdom,  as well as to perform a phase III study of Ampligen in chronic
HBV infection in South Africa. See "Business--General."

     The Company's current  facilities and staff are not adequate to support the
manufacture and production of Ampligen for large-scale commercialization and, to
the extent the Company receives the necessary regulatory  approvals,  it will be
required to significantly increase its quality control, packaging, marketing and
distribution  capabilities in order to sell the approved  product  commercially.
The Company plans to utilize  third-party  facilities  or, if it is unable to do
so,  build or  acquire  commercial-scale  manufacturing  facilities  as the need
arises.  The Company has entered into the SAB Agreement,  which provides for the
issuance  to the  Company of 24.9% of the  capital  stock of a company  which is
developing and operating a new manufacturing facility financed by SAB/Bioclones.
The Company  expects that  manufacturing  at this new facility  will commence in
1996,  on a limited  scale,  with  commercial  production  in 1997,  although no
assurances can be given that this will occur.

     Based on its current  operating plan, the Company  anticipates that the net
proceeds  of  its  recent  financings  and  interest   thereon,   together  with
anticipated  cost  recovery  revenues,  will be sufficient to meet the Company's
capital  requirements  for  approximately  18  months  from  the  date  of  this
Prospectus.  See  "Use of  Proceeds"  and  "Risk  Factors--Additional  Financing
Requirements,   Lack  of  Liquidity,   Uncertainty  of  Additional  Funding  and
Independent Auditors' Report with Explanatory Paragraph."

Ampligen

     Ampligen  is a  high  molecular  weight  RNA  drug  which  is  administered
intravenously.  Based on the  results of  clinical  trials to date,  the Company
believes  that Ampligen may have the  potential to address  significant  medical
needs where  current  treatment  methods are  inadequate  or  non-existent.  The
following  table  summarizes the primary  indications  and the current  clinical
trial regulatory status of Ampligen in the U.S.


                                                                FDA-AUTHORIZED
INDICATION            THERAPEUTIC TARGETS                       CLINICAL TRIALS*
- ----------            -------------------                       ----------------
Antiviral             Chronic HBV (hepatitis B virus)           Phase I/II(1)
                      HIV                                       Phase II(2)
                      ME/CFS (chronic fatigue syndrome)         Phase II/III(3)

Anti-Cancer           Renal Cell Carcinoma                      Phase II/III(4)
                      Melanoma (skin cancer)                    Phase II(5)

- ------------
*    The  foregoing  chart is  qualified  in its  entirety by  reference to more
     detailed   information   included   elsewhere  in  this   Prospectus.   See
     "Business--Government  Regulation"  for a description of the FDA regulatory
     approval process.

(1)  A Phase I/II study was authorized by the FDA. This study has been partially
     enrolled with patients,  and the Company  expects the results of this study
     of Ampligen in HBV to be available in 1996.

(2)  A  FDA-authorized  Phase I and two Phase II clinical trials of Ampligen for
     HIV infection have been completed;  one Phase II trial studied  Ampligen as
     monotherapy  and the second used Ampligen in combination  with AZT. A Phase
     II/III study utilizing Ampligen in a population of largely asymptomatic HIV
     carriers  has  been  presented  to the FDA but is not yet  authorized.  The
     Company is also discussing a  double-blinded  placebo-controlled  Phase III
     study  with the FDA in a  population  of HIV  patients  currently  taking a
     variety of anti-HIV  drugs.  The Company is also  discussing  an open label
     safety trial with the FDA in a similar population.

(3)  The Company has completed a Phase I/II study and a second Phase II clinical
     trial of  Ampligen  in ME/CFS  under FDA  authorizations.  The FDA has also
     authorized the Company's Phase II/III study in ME/CFS which the Company may
     consider initiating in North America in 1996 or 1997.

(4)  A FDA-authorized  Phase I/II study of Ampligen in cancer including patients
     with renal cell  carcinoma  has been  completed.  The Company has  received
     authorization  from the FDA to initiate a Phase II/III study of Ampligen in
     patients with metastatic renal cell carcinoma. At present, the Company does
     not anticipate  devoting  significant  Company  resources to the funding of
     this study, and, accordingly, a date for initiating this study has not been
     determined.

(5)  Patients  with  metastatic  melanoma  have been  treated  with  Ampligen as
     monotherapy under a FDA-authorized  Phase I/II open-label study of Ampligen
     in cancer.  The FDA has  authorized the Company to conduct a Phase II trial
     of Ampligen in  melanoma.  The  Company  expects to initiate  this trial in
     1997.

                                       26
<PAGE>

     The  Company  has not yet  determined  when it will  seek to  commence  its
authorized  Phase II/III clinical trial for renal cell  carcinoma.  Although the
Company plans to use a small  portion of its  available  cash for the renal cell
carcinoma  and melanoma  studies,  the Company plans to seek funding under third
party  collaborative  arrangements  for these studies.  Decisions  regarding the
timing and  sources of funding of such  trials  will be based,  in part,  on the
Company's  progress  in  conducting   clinical  trials  and  seeking  regulatory
approvals for other indications.  In addition,  pursuant to the SAB Agreement, a
controlled  Phase  II/III  clinical  trial  of  Ampligen  for  treatment  of HBV
anticipated to be sufficient for product  registration and  commercialization in
certain foreign countries is contemplated to begin in 1996 or 1997. No assurance
can be given, however, that the clinical trial will be successfully completed or
that product registration or commercialization will ever occur.

Mechanism of Antiviral Action of Ampligen

     When a virus enters a healthy human cell, the cell's normal  response is to
activate the intracellular  enzymes which cause the destruction of viral genetic
information,  thereby preventing viral replication.  Cells also normally produce
extracellular  antiviral factors,  called cytokines (such as interferon),  which
activate the immune  system to attack or scavenge  virally  infected  cells.  In
acute viral  infections  (such as influenza  and  measles),  the presence of the
virus   activates  these   intracellular   alarm  signals  thus  triggering  the
intracellular  and immune  system  response.  Certain  viruses  associated  with
chronic diseases,  such as HIV, ME/CFS associated viruses,  and HBV, may produce
inhibitory  substances which inactivate  these natural  defenses,  and allow the
unchecked  proliferation  of  the  virus.  A  compilation  of  studies  recently
published by the University of Washington  suggests that viruses may not be able
to survive unless they can incapacitate these natural defenses.

     Although  the  antiviral  mechanism  of  action  of  Ampligen  is not fully
understood,  the Company believes that Ampligen's  antiviral mechanism of action
is two-fold. First, the Company believes Ampligen reactivates the inactivated or
dormant  antiviral defense system present in various cells. This natural defense
system,  termed the  ribonuclease  L ("RNAse-L")  and protein  kinase  antiviral
pathways,  disrupts viral  multiplication  within human cells, thereby thwarting
further  virus-induced  cell  damage.  Second,  the  Company  believes  Ampligen
activates  components of the immune  response,  called  macrophages  and natural
killer cells,  which attack or scavenge virally infected cells. This activity is
thought to occur in part by inducing  formation  of selected  cytokines  such as
interferon.  The Company  believes  Ampligen  causes the  production  of various
different antiviral or anticancer proteins.  Thus, the Company believes that the
administration  of Ampligen into the body stimulates the  appropriate  antiviral
defenses at two levels:  first, by activating the  intracellular  defense system
within various cells of the body;  and second,  by activating the immune system,
in part by the production of various interferons in their natural form.

     The  Company  believes  that the  mechanisms  of  action  of most  existing
FDA-approved  antiviral drugs do not stimulate the production of immune cells to
attack, or scavenge,  disease-causing agents such as viruses, in the bloodstream
or  attached  to the surface of cells.  Rather,  these drugs  appear to directly
inhibit the viruses by  interfering  with their  replication.  The Company  also
believes that most of these currently  available  antivirals do not activate the
dormant intracellular defenses described above. See "Business--Competition."

     The Company  believes  that Ampligen may have the ability to elicit a broad
range of host  defenses and,  consequently,  may have the potential to eradicate
certain  viral  infections.  The  Company  believes  that  Ampligen  therapy may
reactivate the RNAse-L and protein kinase pathways; this activity is believed to
arrest further viral  multiplication of certain viruses  including  retroviruses
(such as HIV), HBV, and ME/CFS associated viruses.

Mechanism of Anti-cancer Activity of Ampligen

     Based on preclinical  test results,  the Company believes that Ampligen may
have an anti-cancer  effect at three levels.  First, in order for tumor cells to
divide (and thus multiply), the DNA in such cells must unwind. Ampligen triggers
the production of a chemical  entity called  "bioactive  2-5A" which the Company
believes may inhibit the unwinding of DNA in tumor cells.  Second,  when the DNA
in tumor  cells  unwinds,  the tumor  often  spreads to other  parts of the body
through a process called  metastasis.  Selected regions of the tumor cell's DNA,
called oncogenes,  produce substances which accelerate tumor spread. The Company
believes that Ampligen may activate pathways, such as the protein kinase pathway
referred  to above,  which may serve to inhibit  certain  effects of  oncogenes.
Third,  the Company believes that Ampligen also induces the formation of various
cytokines, including interferon, interleukins and tumor necrosis factor, each of
which may enhance the ability of circulating  immune cells,  such as cytotoxic T

                                       27
<PAGE>

cells and natural  killer  cells,  to scavenge  tumor cells.  Thus,  the Company
believes  that  Ampligen  may  have  three  separate  anticancer  benefits:  (1)
inhibiting  the unwinding of DNA in tumor cells;  (2)  inhibiting  the spread of
tumors  to other  parts of the  body;  and (3)  inducing  formation  of  various
cytokines  which may enhance the ability of healthy  cells to kill tumor  cells.
However,  no  assurance  can be given that  Ampligen  will have any  anti-cancer
effect whatsoever.

Ampligen for Viral Diseases

Chronic Hepatitis B ("HBV")

     HBV is one of several viruses that cause human  hepatitis,  or inflammation
of the liver. Worldwide, an estimated 300 million people are chronic carriers of
HBV. More than 40% of persistently  infected  persons who survive into adulthood
will die from cirrhosis,  hepatocellular carcinoma (liver cancer), or some other
consequence of their infection.  In the U.S. alone,  there are an estimated 1.25
million carriers.  In the mid 1970's, the first HBV vaccine was developed and it
became commercially available in the U.S. in 1981.

     Hepatitis B, the form of hepatitis  caused by HBV, is a contagious  disease
and is transmitted from person to person in several ways including  contact with
bodily fluids of an infected person.  Perinatal and early childhood transmission
is the  predominant  mechanism of infection,  particularly  in lesser  developed
countries.  Those  populations  most at risk for infection  include  health care
workers, housemates of HBV carriers, the sexually active, hemodialysis patients,
the  immunodepressed,  child care  workers,  IV drug users,  and neonates of HBV
positive mothers.

     Common symptoms of HBV include jaundice, fever and the loss of appetite. In
general,  infants and young children have milder initial  disease than older age
patients.  Adults usually  develop acute  hepatitis after a 4-28 week incubation
period, exhibiting symptoms of fever, nausea, fatigue,  headache,  jaundice, and
an enlarged and tender liver.  Symptoms  usually  disappear 2-12 weeks after the
onset  of  jaundice.  In  rare  cases,  i.e.  in  less  than  1.5%  of  patients
hospitalized  for acute  viral  hepatitis,  a fatal form of the  disease  called
fulminant hepatitis occurs.

     Approximately  90% of HBV acutely  infected  adults  become free of the HBV
antigen  1-5 years  after  infection.  The  remaining  approximately  10% become
chronic  carriers of HBV,  capable of transmitting the disease to other persons.
Chronic  carriers can be divided into two groups:  (i) chronic active  carriers,
and (ii) chronic persistent carriers.  Among chronic carriers, about 3 in 10 are
chronic  active,   exhibiting  frequent  and  often  severe  symptoms  of  acute
infection. Chronic active carriers develop significant liver damage, have a high
incidence   of   hepatocellular   carcinoma   (liver   cancer)  and   cirrhosis.
Approximately  7 out of 10 chronic  carriers  are  chronic  persistent,  and are
generally  asymptomatic or have very mild and infrequent  symptoms of hepatitis.
Chronic  persistent  carriers do not usually develop  significant  liver damage,
hepatocellular carcinoma, or cirrhosis.

     In the U.S., 300,000 new cases of Hepatitis B occur each year. The reported
incidence of the disease has  increased  37% between 1979 and 1989,  despite the
introduction and availability of a vaccine in the early 1980's. Of the estimated
1.25 million  Americans  chronically  infected with HBV, there are about 375,000
chronic active carriers,  resulting annually in approximately  4,000 deaths from
cirrhosis,  and 800 deaths  from  hepatocellular  carcinoma.  In China,  most of
Africa,  Southeast  Asia,  parts of the Middle East, and the Amazon basin, it is
estimated that 8-15% of the population is chronically  infected with HBV. In the
developed  countries,  such as Western Europe, the U.S., and Australia,  chronic
infection  rates are  generally  less that 1% of the  population,  although some
developed  countries--Japan,  Italy,  and Greece,  for  example--report  chronic
infection rates of 2-7%. In southern  Europe,  a resistant  mutant strain of HBV
has been identified for which current vaccines do not provide immunity.

     In late 1991,  the  Company  commenced  a Phase I/II study of  Ampligen  in
HBV-infected   individuals  in  collaboration  with  investigators  at  Stanford
University and the University of Pennsylvania. The protocol for this study calls
for a treatment period of six months,  and the Company expects the results to be
available in 1996.  Subject to completion of and  satisfactory  results from the
Phase  I/II  study,  the  Company  anticipates  seeking  FDA  approval  for  the
initiation of a Phase II/III study for Ampligen for HBV in 1997.

     In  1992,  the  FDA  approved  the  commercial  use  of  recombinant  alpha
interferon  for  the  treatment  of  chronic  HBV  infection.  To the  Company's
knowledge,  this is the only  approved  HBV drug in the U.S.  Published  studies
indicate that 60% to 75% of patients with HBV fail to respond to interferon.

                                       28
<PAGE>

     Among the laboratory markers being monitored in the Company's ongoing Phase
I/II study of Ampligen for HBV is the level of viral DNA. Decreases in viral DNA
levels in clinical  evaluations of interferon were found to correlate positively
with clinical  improvements as well as improvements in liver function.  To date,
eight patients have enrolled in this study.  Significant  decreases in viral DNA
have been observed in 50% of the patients  enrolled in the Company's  study with
the patients' DNA levels becoming undetectable during or after Ampligen therapy.
In addition,  liver  enzymes have been measured as an indication of liver damage
in these patients. There was a significant improvement in liver function with an
approximate 50% or greater  decrease in liver enzyme levels in these  responding
patients and one additional patient. The liver enzymes returned to normal in two
patients during or after Ampligen therapy. Overall, 63% (5/8) of the chronic HBV
infected patients showed a response to Ampligen therapy.

     Ampligen  therapy  was  generally  well  tolerated.  One  patient  who  was
intolerant to IFN-alpha therapy was able to tolerate the full course of Ampligen
therapy at the highest  dose given in this  study.  The  Company  believes  that
Ampligen  therapy may convey certain safety  advantages over interferon  therapy
during prolonged treatment cycles necessary in treating HBV.

     The  Company has also filed  internationally  various  patent  applications
covering  hepatitis  treatment in  conjunction  with closely  related RNA drugs,
including  poly  Ao  poly  U,  which  is also  being  developed  by a  potential
competitor  of the Company.  The Company has notified  the  competitor  that the
Company believes its patents cover various RNA drugs used in potential treatment
of hepatitis infections.

HIV Infection

     HIV infection is  characterized  by a progressive  decline in the patient's
immune system usually  resulting in death from  overwhelming  infections.  Fully
symptomatic  AIDS is associated  with multiple viral  infections and the ongoing
destruction of the immune system. At present,  each of these viral infections is
generally treated separately,  resulting in a  "multi-pharmaceutical"  treatment
approach for each patient. In studying potential treatments for AIDS, scientists
have  employed  CD4 cell counts as a surrogate  marker to indicate the extent to
which the disease has progressed.  Independent  studies of the natural course of
HIV disease at the Harvard  University  School of Public  Health have  indicated
that  stabilization  of CD4 levels is associated with reduced short term risk of
death.  The  Company  believes  that  correction  of the  underlying  deficit in
cellular immunity may result in longer-lasting  clinical benefits than currently
approved  treatments  and also  may  reduce  the  need for  multi-pharmaceutical
treatments.

     In 1986, the Company initiated a Phase II study in ten individuals with HIV
disease,  three of whom had fully  symptomatic  AIDS.  This study indicated that
Ampligen  treatment  appeared to delay the expected immune cell deterioration in
six of the seven HIV  patients  who had not  progressed  to AIDS.  Although  the
Company regards these observations as clinically important, it does not consider
them to be  statistically  significant due to the small number of cases studied.
In a separate  study  conducted  in  Houston,  Texas  between  1987 and 1989 and
completed at Baylor University in an extension of the Company's first HIV study,
AZT was  administered as part of a combination  therapy with Ampligen.  Patients
who received this combinational  therapy experienced a stabilization of CD4 cell
levels  for a longer  time  than was  reported  for  patients  receiving  either
Ampligen  alone or AZT  alone.  Data  obtained  at the  United  States Air Force
Medical  Center,  Veterans  Administration  Hospitals  and the Walter  Reed Army
Institute of Research indicate that  responsiveness to foreign antigens injected
under the skin ("skin tests")  predicts  anticipated  life span in patients with
HIV disease.  As HIV disease  progresses,  patients may cease to have a positive
skin test  response.  The Company's  Phase II studies  suggest that Ampligen may
have restored the positive skin test  response in HIV infected  individuals  who
had not  progressed  to AIDS at the time of  initiation  of Ampligen  treatment,
although  these  preliminary  results must be confirmed in  subsequent  clinical
trials consisting of larger numbers of patients.

     In 1987, the Company  formed a joint venture with DuPont which  sponsored a
multi-center,   double-blind  placebo-controlled  Phase  II  clinical  study  of
Ampligen for the treatment of HIV  infection.  The total  patient  population of
this study was 330. This study, known as AMP 101, was terminated in 1988 when an
analysis of interim  data showed no clinical  benefit from  Ampligen  therapy as
opposed  to  placebo.  After  comparing  the data from this study with data from
other studies, and additional experimental investigation,  the Company concluded
that the activity of the Ampligen  administered  to the  participants in the AMP
101 study was impaired due to a reaction which the Company believed to have been
caused by the packaging of Ampligen in polyvinyl  chloride  (plastic) bags. Such
plastic  bags had not  previously  been used in the  packaging  and  delivery of
Ampligen  used in other  clinical  trials.  On April 13, 1990, a fifteen  member
scientific  panel assembled by the NIH in order to evaluate whether an NIH grant

                                       29
<PAGE>

for the  clinical  testing of Ampligen  should be renewed  issued its report and
recommendations  regarding the renewal of this grant.  This report observed that
the  Ampligen  used in the AMP 101 study had been  found by the  Company to have
increased  content of single strand RNA due to  preparation  of the drug and the
use of plastic bags. The report  further stated that "the promising  preliminary
results obtained make further evaluation of the compound alone or in combination
with other agents of great  importance to define fully its role as a therapeutic
agent." The joint venture  arrangement  with DuPont was later terminated as part
of the  settlement  of a lawsuit  brought  against  the Company by DuPont and an
action  against  DuPont  brought by the Company  related to the AMP101 study and
alleged breaches of the joint venture agreement.

     In 1991, the NIH, through the National  Institute of Allergy and Infectious
Diseases,  completed  an  open-label  Phase I/II study of Ampligen  involving 39
patients at the University of Pittsburgh treated at different dosages. Of the 24
evaluable patients who received at least 120 mg/m2 of Ampligen for the treatment
of HIV, 14 patients experienced stabilized CD4 levels for at least nine weeks.

     The Company has  conducted  a Phase II clinical  trial of Ampligen  for HIV
infection.   This  study,  which  was  initiated  in  1990,  was  a  randomized,
controlled,  multicenter  study evaluating  Ampligen therapy in combination with
AZT. The Company filed the results of this study with the FDA in late 1993 along
with a request for approval to initiate a Phase II/III study in 1994.  The Phase
II/III study currently being  considered by the FDA would utilize  Ampligen in a
population of largely  asymptomatic HIV carriers.  The FDA raised certain issues
with respect to the Phase II clinical  trial  results,  including the laboratory
endpoints  used.  The Company has  presented  to the FDA the design of the Phase
II/III study,  including  identification of appropriate  clinical and laboratory
endpoints. See "Business--Government Regulation."

     Currently, the principal treatments for HIV are AZT, DDI, DDC, D4T, 3TC and
a new group of compounds  termed protease  inhibitors,  of which three have been
recently approved.  In the case of each of these drugs, most patients ultimately
cease to benefit  from the drug due to the  emergence of new strains of the AIDS
virus.  Based on the  results  obtained  to date,  an AZT  resistant  virus  has
remained  sensitive  to  Ampligen  in various in vitro  studies  which have been
performed  at  Hahnemann  University.  Although no  assurances  can be given and
additional  testing will be necessary to substantiate the Company's belief,  the
Company  believes  that  human  subjects  may be less  likely to  develop  viral
resistance to Ampligen as a result of the drug's perceived  mechanism of action.
See "Business--Mechanism of Antiviral Action of Ampligen."

ME/CFS

     ME/CFS is characterized  by unexplained  fatigue or chronic illness for six
months or longer for which no cause has been identified after a thorough medical
workup. Although the etiology of ME/CFS is unknown, a significant segment of the
medical community believes that it may be caused by a virus because the onset of
the condition is usually  characterized by flu-like symptoms followed by chronic
tiredness  that,  in some cases,  can continue  for years.  ME/CFS is also often
accompanied  by a disturbance  of the patient's  immune  system,  as measured by
lower levels of natural killer cell activity and/or lower lymphocyte counts.

     Data reported by a consortium of institutions  including Harvard University
and the  University  of  Washington  indicate  that a majority  of those  ME/CFS
patients who have been tested have been found to have elevated  levels of herpes
virus  (HHV-6) as well as brain  abnormalities  that were noted during  magnetic
resonance  imaging  (known as MRI) testing.  Because there may be both viral and
immune components to this disease, the Company believes, although it has not yet
clinically  proven,  that Ampligen may be well suited as a treatment for ME/CFS.
There  are no  drugs  specifically  approved  by the FDA for this  disorder  and
physicians typically prescribe analgesics and anti-inflammatory  drugs to combat
the painful symptoms.

     In 1989,  the Company  received FDA  authorization  to conduct a Phase I/II
study of Ampligen  for ME/CFS.  In 1991,  the Company  completed a  multicenter,
double-blind,  placebo-controlled  Phase II clinical trial (the "Phase II ME/CFS
Study") of Ampligen in patients with ME/CFS.  The FDA raised certain issues with
respect to this clinical trial.  See  "Business--Ampligen  Safety Profile" for a
discussion of the drug safety issues raised by the FDA.

     In 1992,  the Company  received  approval  from the HPB,  the federal  drug
regulatory  agency  in  Canada,  to  conduct  an  open-label  clinical  study at
specified  sites to evaluate  the  activity  and safety of Ampligen in up to 200
patients with severely  debilitating  ME/CFS. The Company has been authorized to
require  patients in this  clinical  study to pay the  Company for the  Ampligen

                                       30
<PAGE>

administered.  The Company  understands  that patients may not be reimbursed for
these  costs by any  Canadian  authority  or any  private  insurer.  The Company
anticipates  that initial patients may be enrolled in this study during 1997. In
October and November 1992, respectively,  the Company was authorized by the FDA,
in the U.S.,  and the HPB, in Canada,  to initiate a Phase  II/III  multicenter,
placebo-controlled,  randomized,  double  blind  clinical  trial  in up  to  230
patients  in the  U.S.  and  Canada  with  ME/CFS.  In  December  1992,  the FDA
authorized  the export of Ampligen  for  investigational  use for  treatment  of
ME/CFS patients in Canada. The Company  anticipates this study will be initiated
in 1997 at multiple centers in North America.

     In February  1993, the Company  presented  results of its Phase II study of
Ampligen  for  ME/CFS  to an FDA  Advisory  Committee  and  these  results  were
published in early 1994 in Clinical Infectious Diseases, a peer reviewed medical
journal which emphasizes the understanding and potential treatment of infectious
diseases.  The results indicated that patients on Ampligen, in contrast to those
receiving a placebo,  showed  significant  improvement  in physical  capacity as
determined by performance on treadmill  testing.  The Ampligen  treated  patient
group also required less pain medication than did the placebo group.

     In December 1993,  Ampligen was designated as an Orphan Drug by the FDA for
the   treatment  of  Chronic   Fatigue   Syndrome.   See   "Business--Government
Regulations."

Ampligen for Cancer

Renal Cell Carcinoma (Kidney Cancer)

     Based on estimates  prepared by the American  Cancer  Society,  the Company
anticipates  that  there  will be  approximately  25,000 new cases of renal cell
carcinoma  diagnosed in the U.S. in 1996.  Patients with  metastatic  renal cell
carcinoma  show five-year  survival rates of only 2%-18%.  Treatment of advanced
renal cell carcinoma with  metastases  with  conventional  chemotherapy  has not
resulted in  significant  median  increases  in  survival.  Biological  response
modifiers,  or  lymphokines,  have also been used with limited  success to treat
renal cell carcinoma patients. To the Company's knowledge, the only FDA approved
drug for the treatment of renal cell carcinoma is Interleukin-2 ("IL-2"),  which
is a biological  response modifier.  Based on published reports,  treatment with
IL-2 results in a reduction in tumor size in approximately  10%-20% of patients.
Increased survival of patients receiving IL-2 therapy has been reported. The FDA
approved  IL-2 in 1992  for  sale in the  treatment  of  metastatic  renal  cell
carcinoma.

     In 1991,  Ampligen  was  designated  as an  Orphan  Drug by the FDA for the
treatment of renal cell  carcinoma.  See  "Business--Government  Regulations." A
Phase I/II clinical trial of Ampligen in cancer  patients was initiated in 1983.
Thirteen patients with metastatic renal cell carcinoma  received Ampligen at low
doses (10-120 mg.) twice weekly;  eighteen  patients with metastatic  renal cell
carcinoma  received  Ampligen at high doses  (200-500  mg.) twice  weekly.  Data
analysis  from this study  indicates  that the  patients  in the high dose group
experienced  an  increase  in median  survival  versus the low dose group and as
compared to an  historical  control  group of 610  patients.  Specifically,  the
median  survival  for the  Ampligen  high dose group was 20.4  months  while the
median survival for the historical  control group was 5.5 months.  This increase
represents a 370%  prolongation  of survival in the high dose  Ampligen  treated
group. The survival of the low dose Ampligen group did not increase  compared to
the historical control group.  Overall,  the Company believes that these results
are  encouraging   given  the  substantial   inadequacy  of  current   treatment
modalities, and the short life expectancy of many renal cell carcinoma patients.
The Company  believes that these results suggest that there may be a correlation
between high dose Ampligen  treatment and increased survival in metastatic renal
cell carcinoma patients.

     On March 22,  1993,  the  Company  received  authorization  from the FDA to
initiate  an open  label,  active-controlled,  multicenter  study of Ampligen in
patients  with  metastatic  renal  cell  carcinoma.  On  June 7,  1993,  the HPB
authorized the Company to conduct this clinical trial in Canada. At present, the
Company  does not  anticipate  devoting  significant  Company  resources  to the
funding of these  studies,  because the size of the  potential  market for renal
cell carcinoma is relatively small.

     On June 7, 1993, the Company also received  approval from the HPB in Canada
to conduct a second open-label clinical study at specified sites to evaluate the
activity and safety of Ampligen in up to 200 patients with renal cell carcinoma.
The Company has been  authorized to require  patients in this clinical  study to
pay the Company for the Ampligen  administered.  There can be no assurance  that
patients will be reimbursed for these costs by any Canadian  authority or by any
private  insurer.  The Company has not initiated this program to date because of
limited  resources  and  a  shift  in  the  Company's  clinical  priorities  but

                                       31
<PAGE>

anticipates  that,  once  resources  are  available,  initial  patients  will be
enrolled in this study during 1997.  The Company does not believe that approvals
for these studies will be withdrawn as a result of the delay since the approvals
were not conditioned upon a particular commencement date.

     The  Canadian  clinical  trials  have not yet been  approved by the ethical
review committees  ("ERCs") at the respective  clinical sites involved,  and the
Company  has agreed  with the HPB not to proceed  with such  trials  unless such
approvals  are  obtained.  These  approvals  are  required  for all drug studies
conducted  in Canada.  Although  the  Company  believes  that it will be able to
secure the  approvals of the ERCs,  no  assurances  can be given with respect to
when,  or if,  these  approvals  will be  obtained.  The  Company  has  received
authorization from the FDA to export Ampligen to Canada for  investigational use
for treatment of renal cell carcinoma patients in Canada.

Malignant Melanoma

     Data from the American  Cancer  Society and the WHO indicate  that both the
incidence and mortality from malignant  melanoma are rising steadily among white
populations  throughout the world. In the past decade, the incidence of melanoma
has increased faster than that of any other cancer, except lung cancer in women.

     In December 1993,  Ampligen was designated as an Orphan Drug by the FDA for
the  treatment  of  invasive  malignant  melanoma.   See   "Business--Government
Regulations."  Patients with metastatic melanoma have been treated with Ampligen
as  monotherapy  under a Phase I/II  open-label  study of  Ampligen as part of a
broader study of cancer patients at Hahnemann  University  beginning in 1983 and
Yale University  beginning in 1991. Two of the ten patients treated had complete
responses,  as  substantiated  by computerized  axial  tomography  (known as CAT
scans). There was no evidence of clinical benefit among the eight other patients
in this study. The FDA has authorized the Company to conduct a Phase II trial at
the M.D.  Anderson  Hospital in Houston,  Texas. The Company expects to initiate
this trial in 1997.

Ampligen Safety Profile

     The Company  believes that Ampligen has been  generally  well  tolerated in
more than  15,000  patient  treatment  weeks with a low  incidence  of  clinical
toxicity,  particularly  given  the life  threatening  diseases  being  treated.
Clinical experience with Ampligen now totals 311 patients,  of whom 171 patients
have received  Ampligen for six months or more. Of these patients,  117 patients
have received  Ampligen for one year or more; 63 patients have received Ampligen
for two years or more;  and 22 patients  have  received  Ampligen for periods in
excess  of  three  years.  A  mild  flushing   reaction  has  been  observed  in
approximately  15% of patients treated in the Company's  various  studies.  This
reaction is  occasionally  accompanied  by  erythema,  a tightness of the chest,
tachycardia,  anxiety, shortness of breath, subjective reports of "feeling hot,"
sweating  and  nausea.  The  reaction is usually  infusion-rate  related and may
generally be controlled by slowing the infusion rate. Other adverse side effects
include liver enzyme level elevations, diarrhea, itching, urticaria (swelling of
the skin), bronchospasm, transient hypotension,  photophobia, rash, bradycardia,
transient  visual  disturbances,  arrhythmias,  decreases in platelets and white
blood cell counts, anemia,  dizziness,  confusion,  elevation of kidney function
tests,  occasional temporary hair loss and various flu-like symptoms,  including
fever,  chills,  fatigue,  muscular aches,  joint pains,  headaches,  nausea and
vomiting. These flu-like side effects typically subside within several months.

     In February  1992,  after the  conclusion  of the Phase II ME/CFS Study and
subsequent to the  Company's  submission of data from that study to the FDA, the
FDA advised the Company,  among other things, of certain concerns  regarding the
safety  profile  of  Ampligen.  Specifically,  the FDA noted that  various  side
effects  of  Ampligen  had been  observed  during  the  Phase II  ME/CFS  Study,
including  severe liver  toxicity,  severe  swelling and itching of extremities,
severe chest pain,  severe muscle  cramps and severe  flu-like  symptoms.  These
observations  were made by the FDA in the  context  of the  FDA's  review of the
Company's proposed protocol for a Phase II/III ME/CFS trial.

     In July 1992,  the Company  responded  to these  concerns by  providing  an
analysis  of the side  effects  data  obtained  from the  Phase II study and the
treating  physicians'  views. The Company observed that many of the side effects
described  by the  FDA  were  regarded  by both  the  Company  and the  treating
physicians  of those  patients as unrelated to Ampligen  treatment.  The Company
advised  the FDA of the  Company's  view  that the data from the Phase II ME/CFS
Study indicated that Ampligen  appeared to have a favorable  risk/benefit  ratio
for ME/CFS. On October 9, 1992, the FDA authorized the Company's  proposed Phase
II/III clinical trial for ME/CFS, concluding "that it is reasonably safe for the

                                       32
<PAGE>

initiation of [the Company's]  proposed  clinical study." This regulatory action
allows  Ampligen  to be  administered  for up to one year to an  additional  115
patients (in a 230 patient placebo-controlled trial).

     In February 1993, the FDA raised an issue  regarding  possible side effects
of Ampligen which grew out of the agency's  review of an animal study  conducted
in 1987  involving  beagle dogs.  Although  the results of this study  suggest a
possible  association  between Ampligen  administration and focal epicarditis (a
small  localized  area of  inflammation  of the outer lining of the heart),  the
study did not establish  whether the  epicarditis  observed was  attributable to
Ampligen administration. The meaning of these findings in the beagle dog and how
they relate to human clinical  experience is not presently known.  Because these
conditions  were not  observed in any other  animal  studies or in the  clinical
trials  conducted in humans over the previous  ten years,  the Company  believes
that these  findings may be  restricted to the beagle dog. The FDA has requested
that the  Company  conduct an  additional  toxicity  study of Ampligen in beagle
dogs.  The FDA has also asked the Company to revise the informed  consent  forms
provided to patients upon enrollment in the Company's clinical trials to include
the findings of the 1987 study concerning epicarditis in beagle dogs, as well as
other toxicities observed during the course of the Company's various preclinical
toxicology studies in rabbits,  rats, dogs and monkeys.  The Company has revised
its informed consent forms in accordance with this request. Finally, the FDA has
also asked the  Company  to conduct  cardiovascular  follow-up  examinations  on
selected patients in accordance with criteria  suggested by the FDA. The Company
has complied with this request.  These  examinations,  the results of which were
submitted  to the FDA in March,  April and May,  1993,  showed  no  evidence  of
Ampligen-induced epicarditis in these patients. The Company believes that it has
adequately  complied with the FDA's requests for  information  and believes that
the issues  raised by the FDA will not have a material  effect on the  Company's
efforts to receive approval for Ampligen as a treatment for ME/CFS,  although no
assurances can be given.

     In  connection  with the  proposed  Phase III study on HIV  patients  under
discussion with the FDA, the Company will complete  additional  toxicity studies
as required by the FDA.

Oragen Drugs

     The Company is in the early pre-clinical stages of developing Oragen drugs,
a nucleic acid  technology  related to Ampligen.  Oragen drugs are low molecular
weight RNA compounds which the Company believes,  by virtue of their small size,
have the  potential for becoming  oral,  broad-spectrum  treatments  for various
viral diseases such as HIV infection and chronic HBV  infection.  The technology
for these  products has been  developed in part by the Company and has also been
developed in part by Temple University which has licensed to the Company certain
technology for commercial use on an exclusive basis,  subject to certain limited
exceptions.  The  Company  was  notified  in July  1994 that  Temple  University
believed the Company was in breach of the licensing agreement and therefore that
the agreement was being  terminated.  The Company has filed a lawsuit  seeking a
declaratory  judgement  that the agreement  remains in full force and effect and
seeking monetary damages. See "Business--Research and Development, Licensing and
Collaboration    Agreements,"    "Business--Legal    Proceedings"    and   "Risk
Factors--Disputes  and Legal Proceedings Related to Patent Rights". In the event
that the Company  does not prevail in its  lawsuit and the  agreement  is deemed
terminated,  the Company  would lose its  investment  to date in certain  Oragen
compounds which it acquired  pursuant to its licensing  agreement.  Although the
Company has developed its own Oragen  compounds,  to which it would maintain its
rights,  Temple or its new licensees,  if any,  could become  competitors of the
Company in the event that the Company does not prevail in its lawsuit.  To date,
a number of compounds have been developed  using this nucleic acid technology by
both the Company and Temple,  working both together and separately.  No clinical
trials of Oragen drugs have been conducted,  and  authorization  to conduct such
trials cannot be sought or obtained  until such time as sufficient  pre-clinical
work has been completed.

     Initial studies show that these drugs can withstand enzymatic  destruction,
an  important  factor in order  for  compounds  to enter the blood  stream in an
intact form.  Results from in vitro studies conducted in collaboration  with the
National  Institute  of Allergy and  Infectious  Diseases  indicate  that Oragen
products  may  inhibit  HBV  infection,   and  in  vitro  studies  conducted  in
collaboration  with the National  Cancer  Institute and the University of Mainz,
Germany, indicate that Oragen products may inhibit HIV infections. One compound,
Oragen 0004, has shown  inhibition of HBV  multiplication  in vitro and another,
Oragen 0044, has demonstrated activity against HIV in in vitro studies performed
by  Temple  University.  These  two  Oragen  compounds  have  been  produced  in
quantities  which the Company  believes are sufficient to perform initial animal
toxicology  testing.  Recent  experiments with mice at the University of Toronto

                                       33
<PAGE>

indicate that Oragen 0004 may inhibit  mouse  hepatitis  virus,  and that Oragen
0004 may be  absorbed  after  oral  delivery.  There has been no human  clinical
testing  of Oragen  products  to date.  There  can be no  assurance  that  human
clinical  testing,  if  initiated,  will  yield  results  consistent  with those
achieved in in vitro or animal testing.

     The  Company  believes  that  Oragen  drugs may exert  anti-viral  activity
through two intracellular mechanisms. First, they may activate the intracellular
"latent"  RNAse-L  to  degrade  viral  RNA.  Second,  they may  inhibit  the HIV
replication enzyme, reverse transcriptase, by binding to a different site on the
enzyme  from that bound by  conventional  anti-HIV  compounds  such as AZT.  The
Company's belief in the potential  effects of these compounds is based, in part,
on the  collaborative  in vitro  studies  with  the  National  Cancer  Institute
referred  to  above.  Certain  in  vitro  experiments  performed  at  Vanderbilt
University  indicate that certain human immune cells can be protected  from cell
death caused by HIV infection by treatment with Oragen drugs.  Under sponsorship
of the National Institute for Allergy and Infectious Diseases,  in vitro studies
at Georgetown  University  also  demonstrated  that Oragen drugs may inhibit the
replication of human HBV virus. In each of the in vitro studies,  no substantial
cell toxicity was observed at concentrations which inhibit the applicable virus.

     The  Company  believes  Oragen  drugs  work  at a  different  stage  of the
anti-viral  and  anti-cancer  response  chain than Ampligen and therefore may be
effective in disorders where the activity of Ampligen is limited.

     The  following  table shows the  Company's  past and  present  pre-clinical
studies of Oragen  compounds.  Except as otherwise  noted, the studies have been
conducted  under  collaborative  arrangements  pursuant  to  which  the  Company
supplies quantities of the drug to the third party institution for testing,  and
that  institution  assigns  all of the  commercial  rights to the studies to the
Company and funds the research costs. See "Research and  Development,  Licensing
and Collaboration Agreements."

                           Potential Market 
Target Programs            Applications               Collaborators
- ---------------            -----------------          ------------

Human Immunodeficiency     Treatment of HIV           National Cancer Institute
Virus (HIV)                                           University(1)(2)
                                                      Vanderbilt University(1)
                                                      University of Mainz,
                                                      Germany(1)

Hepatitis B Virus (HBV)    Treatment of HBV           National Institute 
                                                      of Allergy and
                                                      Infectious Diseases, 
                                                      Georgetown University

Mouse Hepatitis Virus      Treatment of Hepatitis C   University of Toronto(1)

Herpes Simplex Virus       Treatment of Herpes        Medical College of
Type 1 and 2 (HSV-1,       Infections                 Pennsylvania(1)
HSV-2)                                                Juntendo University 
                                                      Tokyo, Japan

Poliovirus/Respiratory     Childhood Viral Diseases   Howard University
Syncytial virus

Solid tumors               Treatment of various       Temple University(1)(2)
                           types of cancer            Hahnemann University

- -------------
(1)  Funding  provided by the Company.  In all other cases,  funding provided by
     the institution.

(2)  The Company was notified in July 1994 that Temple  believed the Company was
     in breach of its licensing  agreement and therefore  that the agreement was
     being  terminated.  The Company has filed a lawsuit  seeking a  declaratory
     judgment  that the  agreement  remains in full force and effect and seeking
     monetary  damages and Temple has filed a lawsuit  against the Company.  See
     "Business--Legal  Proceedings"  and "Business--  Research and  Development,
     Licensing and Collaboration Agreements."

Diagnostic Products

     The  Company is also  developing  a set of clinical  laboratory  diagnostic
products, trademarked Diagen products, that are designed to assist physicians in
identifying patients for the Company's RNA drug therapies and to assist in their
clinical  management  thereafter.  The Company believes that the availability of
such tests may lead to improved patient care and increased market penetration by
the Company's  products,  if and when such products are available for commercial

                                       34
<PAGE>

sale.  While these tests are at an early stage of  commercial  development,  the
Company   believes  that  they  may  ultimately   provide  an  opportunity   for
diversification  of the Company's products and revenues and may help to identify
patients  who could  benefit  from the  Company's  drug  treatment.  The  Diagen
products  would have to go through a  regulatory  diagnostic  product  clearance
process prior to commercial sale. See "Business -- Government Regulation" below.

Subsidiary Companies

     In September 1994, the Company incorporated three wholly-owned subsidiaries
- -- BioPro Corp. ("BioPro"),  Core BioTech Corp. ("Core BioTech"),  and BioAegean
Corp. ("BioAegean") -- in the State of Delaware.

     The purpose of BioPro is to commercialize  tobacco-related products. BioPro
intends to develop methods to utilize RNA technology in conjunction with certain
tobacco and cigarette filter products to provide cleaner tobacco  products.  The
technology  is based in part on recent  unpublished  experiments  in  laboratory
animals conducted at the University of California, Davis, which suggest that the
Company's RNA drugs may prevent  certain  aspects of lung fibrosis under certain
experimental  conditions.  In September  1994, the Company  granted an exclusive
worldwide  license  and/or  sub-license  to certain of its patents and  assigned
certain  other  patents to BioPro  (the  "BioPro  License")  for a term of three
years,  which term will  automatically be extended for a term of 15 years in the
event that BioPro provides  evidence that it has  commercialized  one or more of
the  patents.  BioPro  has  agreed  that it will  not  develop  any  product  or
technology  which may be  deemed  therapeutic  and has  granted a right of first
refusal to the Company  with respect to any  technology  which it may develop or
acquire.  BioPro has the right to grant  sublicenses  subject to the requirement
that its sublicensees  agree to  non-competition  arrangements with the Company.
The Company has agreed  that it will not develop any  technology  related to the
business of BioPro and has granted  BioPro a right of first refusal with respect
to any technology it may develop with respect to the business of BioPro.

     In July  1995,  the  Company  entered  into an  agreement  with  Vernacular
Communications, Inc. and certain other individuals (collectively,  "Vernacular")
pursuant  to which  Vernacular  will  provide  various  services  to and for the
Company and BioPro, including introduction to the Company and BioPro of entities
interested  in  potential  corporate   alliances.   If,  as  a  result  of  such
introductions,  the Company  and BioPro  enter into a  transaction  with such an
entity,  the  Company  shall (i) pay to  Vernacular  8%, 6% and 3% of the first,
second and third  million  dollars,  respectively,  paid to the  Company for the
licensing  of its  products  through  BioPro and 2% of each  subsequent  million
dollars, (ii) pay to Vernacular 10% of all licensing fees/ royalties received in
connection with the transaction and (iii) grant to Vernacular 4% stock interests
in  BioPro  and/or  any  other  business  entity  created  as a  result  of  the
transaction.  In addition,  the Company  agreed to pay one of the  individuals a
one-time consulting fee of $25,000.

     The purpose of Core BioTech is to  commercialize  the Company's  diagnostic
oriented  patents which provide RNA  technology to detect  certain  difficult to
diagnose viral diseases such as ME/CFS and other immuno-dysfunctional conditions
through  strategically  located central  reference  laboratories.  In September,
1994, the Company granted an exclusive  worldwide license and/or  sub-license to
certain of its patents and assigned  certain  other patents to Core BioTech (the
"Core BioTech License") for a term of three years, which term will automatically
be  extended  for a term of 15 years in the  event  that Core  BioTech  provides
evidence that it has commercialized one or more of the patents. Core BioTech has
agreed that it will not develop  any product or  technology  which may be deemed
therapeutic and has granted a right of first refusal to the Company with respect
to any technology which it may develop or acquire. Core BioTech has the right to
grant  sublicenses  subject to the requirement  that its  sublicensees  agree to
non-competition  arrangements  with the Company.  The Company has agreed that it
will not develop any technology  related to the business of Core BioTech and has
granted Core BioTech a right of first refusal with respect to any  technology it
may develop with respect to the business of Core BioTech.

     The  purpose  of  BioAegean  is to  commercialize  the  Company's  consumer
oriented patents,  especially in the skin care area including the development of
sunscreens  to prevent  malignant  melanoma and  maintain  vitality of cutaneous
tissues normally lost with aging or increased sun exposure. In September,  1994,
the Company granted an exclusive worldwide license and/or sub-license to certain
of its patents and assigned  certain other patents to BioAegean (the  "BioAegean
License") for a term of three years,  which term will  automatically be extended
for a term of 15 years in the event that BioAegean provides evidence that it has
commercialized one or more of the patents. BioAegean has agreed that it will not
develop  any  product  or  technology  which may be deemed  therapeutic  and has
granted a right of first  refusal to the Company with respect to any  technology
which it may develop or acquire.  BioAegean  has the right to grant  sublicenses

                                       35
<PAGE>

subject  to the  requirement  that its  sublicensees  agree  to  non-competition
arrangements  with the Company.  The Company has agreed that it will not develop
any technology  related to the business of BioAegean and has granted BioAegean a
right of first  refusal  with  respect to any  technology  it may  develop  with
respect to the business of BioAegean.

     In exchange for the grant of the BioAegean License, BioAegean has agreed to
issue the following  securities to the Company:  (i) 1,000,000  shares of common
stock of BioAegean,  (ii) an option to purchase 1,000,000 shares of common stock
of BioAegean at an exercise price of the lesser of the initial  public  offering
price of BioAegean or $5.00 per share,  provided the initial public  offering of
BioAegean  occurs before May 4, 1997 and (iii) 10,000 shares of Preferred  Stock
having a liquidation preference and a right to 1,000 votes for each share on all
matters that may come before the shareholders.

     In June 1995, the directors of BioAegean  approved the private placement of
1,000,000 shares of common stock at $1.00 per share which is expected in 1996 or
1997. In addition, the directors of BioAegean issued 10-year options to purchase
an  aggregate  of  1,200,000  shares of common stock of BioAegean at an exercise
price  of  $1.00  per  share  (the  "BioAegean  Options")  to its  officers  and
directors.  The BioAegean Options are conditional upon the recipient's agreement
to serve BioAegean as needed for at least 24 months unless fully  incapacitated.
William A. Carter, M.D., Chairman,  President and Chief Executive Officer of the
Company, serves as Chairman, Chief Executive Officer and a Director of BioAegean
and  received  300,000  BioAegean  Options.  Peter  Rodino,  III, a director and
Secretary of the Company, serves as Vice-Chairman,  Secretary, Corporate Counsel
and a director of BioAegean and received 150,000 BioAegean  Options.  R. Douglas
Hulse serves as Chief  Operating  Officer of both the Company and  BioAegean and
received  50,000  BioAegean  Options.  Robert Peterson serves as Chief Financial
Officer of both the Company and BioAegean and received 50,000 BioAegean Options.
Sharon Will, Vice President of Investor  Relations and Corporate  Communications
for the  Company,  serves as Vice  President  of  Marketing  for  BioAegean  and
received 150,000 BioAegean Options. Harris Freedman serves as Vice President for
Strategic  Alliances  for both the Company and  BioAegean  and received  150,000
BioAegean  Options.  Richard  Piani,  a  director  of the  Company,  serves as a
director and the Advisor for European  Affairs of BioAegean and received  50,000
BioAegean  Options.  Gerald Kay serves as a director  for both the  Company  and
BioAegean and received 50,000 BioAegean Options. BioAegean's remaining director,
Jerome Belson, a principal shareholder of the Company, received 50,000 BioAegean
Options.

     While  the  Company  believes  it has  developed  an  international  patent
position to cover these possible  applications of its  technology,  no assurance
can be given  that any of the goals of the three  subsidiaries  described  above
will be  achieved,  that  significant  clinical  testing  will  occur,  that any
products will  ultimately be  developed,  commercially  or otherwise or that the
Company's  patent  position  will be adequate to protect any products  which may
result.

Patent Rights

     The Company has sought patent protection in four major geographic  markets:
the United  States,  Canada,  Europe,  and Japan.  The Company has filed  patent
applications  involving  chemistry  and  processes  with  the  U.S.  Patent  and
Trademark  Office and foreign patent  applications in other  countries,  such as
members  of  the  European  Patent  Convention,   Canada,  Japan,  South  Korea,
Australia.  The Company's patents and patent applications are principally "field
of  therapeutic  use" patents and cover various  potential uses of the Company's
RNA technology in the health care field,  including ethical drugs for anti-viral
and  cancer  indications,  as  well as  non-prescription  consumer  health  care
products.  "Field of therapeutic  use" patents restrict the use of the compounds
to  specific  disease  categories  or  medical  conditions  but do not  restrict
potential  competitors from  manufacturing  the same product for other potential
uses which are not covered by the Company's patents.  Of the patent applications
filed  worldwide,  as of  June  30,  1996  approximately  230 had  been  issued,
including  13 U.S.  patents  and 13 Canadian  patents.  None of such issued U.S.
patents will expire prior to the year 2006. No assurances  can be given that the
Company's pending  applications  will mature into patents.  The Company believes
that all of these 200 patents are pertinent to the Company's  present and future
operations  as the  Company  expects to market its  product in Europe,  Asia and
certain  Third World  countries,  although  the Company has not entered into any
additional  agreements with respect to these areas and no assurance can be given
that any business relationship will result.

                                       36
<PAGE>

     The Company's  ability to receive patent protection for the commercial sale
of Ampligen is subject to the Company's  obtaining  enforceable patents covering
the use of the drug for a  particular  indication.  The  Company has been issued
certain  patents on the use of Ampligen alone and Ampligen in  combination  with
certain other drugs for the treatment of HIV. The Company has also been issued a
patent on the use of Ampligen in  combination  with certain  other drugs for the
treatment of HBV and HCV and a patent  which  affords  protection  on the use of
Ampligen in patients with ME/CFS.  To date,  the Company has not been issued any
patents in the U.S.  regarding  the use of Ampligen for treatment of the cancers
which the  Company has sought to target.  The  Company's  applications  for such
patents are currently pending; no assurances can be given that such applications
will be allowed.  No assurances can be given that  competitors will not seek and
obtain patents  regarding the use of Ampligen for a particular target indication
before the Company.

     The Company's  licensor,  Temple University,  has filed patent applications
regarding the  composition of matter,  methods of  preparation  and use of novel
double-stranded RNAs,  oligonucleotides,  and 2-5A analogues trademarked Oragen.
Composition  of  matter  patent   applications  have  been  filed  which  define
nucleotide  sequences  and  RNA  structures  that  correct  certain  biochemical
reactions which may be associated with immunological disorders.

     In July 1994, Temple  University  advised the Company that it was in breach
of a certain  licensing  agreement for Oragen compounds at the preclinical stage
of  product   development.   In  November  1994,  in  an  action  captioned  HEM
Pharmaceuticals  Corp. v. Temple University of the Commonwealth System of Higher
Education,  the Company filed suit against Temple. In January 1995, Temple filed
a separate  litigation  against the  Company.  If the  Company  were to lose its
claim, the Company would lose its investment to date in certain Oragen compounds
acquired pursuant to the Temple Agreement.  While not yet tested on humans these
Oragen  compounds  have the  potential  and  theoretical  advantage of having an
Ampligen-like effect upon oral administration. No assurance can be given that as
a result of such  loss,  Temple or its new  licensee,  if any,  would not become
competitors of the Company or that the  termination  of the licensing  agreement
will not have a materially  adverse  effect on the Company's long range business
or  financial  condition.  See "Risk  Factors--Disputes  and  Legal  Proceedings
Related to Patent Rights" and "Business--Legal  Proceedings" and "--Research and
Development, Licensing and Collaboration Agreements."

     The patent positions of pharmaceutical and biotechnology  firms,  including
the Company,  are  generally  uncertain  and involve  complex  legal and factual
questions.  Consequently,  even though the Company is currently prosecuting many
patent  applications with the U.S. and foreign patent offices,  the Company does
not know how many of its applications will result in the issuance of any patents
or,  of  patents  which  are  issued,  whether  they  will  provide  significant
proprietary  protection or will be  circumvented  or  invalidated.  Since patent
applications in the United States are maintained in secrecy until patents issue,
and since publication of discoveries in the scientific or patent literature tend
to lag behind actual  discoveries by at least several months, the Company cannot
be certain that it was the first  creator of the  inventions  covered by pending
patent  applications  or that it was the first to file patent  applications  for
such  inventions.  Competitors or potential  competitors  may have filed (or may
subsequently  file)  applications  for, and may obtain,  additional  patents and
proprietary rights relating to, compounds or processes competitive with those of
the Company.  Accordingly,  there can be no assurance that the Company's  patent
applications will result in patents being issued or, if issued, that the patents
will afford  protection  against  competitors with similar  technology;  nor can
there be any  assurance  that  others will not obtain  patents  that the Company
would need to license or circumvent.

     There  can be no  assurance  that any  patents  issued  or which may in the
future  be  issued  to the  Company  would be  upheld  by a court  of  competent
jurisdiction.  The Company also relies upon  unpatented  trade  secrets,  and no
assurance can be given that others will not independently  develop substantially
equivalent  proprietary  information  and techniques or otherwise gain access to
the Company's trade secrets or disclose such technology, or that the Company can
meaningfully  protect its right to unpatented  trade secrets.  See "Risk Factors
- --Uncertainty Regarding Patents and Proprietary Rights."

     The  Company  currently  requires  its  employees,   consultants,   outside
scientific collaborators and sponsored researchers and other advisors to execute
confidentiality  agreements  upon the  commencement  of employment or consulting
relationships  with the Company.  The Company  also has required  members of its
Scientific  Advisory Board to sign a confidentiality  agreement prior to each of
the last two annual meetings,  at which  confidential  information was provided.
The Company will continue this practice in the future.  These agreements require

                                       37
<PAGE>

that all confidential information made known to the individual during the course
of the individual's  relationship  with the Company be kept confidential and not
disclosed  to third  parties  except in specific  circumstances.  In the case of
employees,   the  agreements  provide  that  all  inventions  conceived  by  the
individual  shall be the  exclusive  property  of the  Company.  There can be no
assurance,  however, that these agreements will provide meaningful protection or
adequate  remedies for the Company's  trade secrets in the event of unauthorized
use or disclosure of such information.

     In connection with the 1994 Common Stock Financing, the Company agreed with
Bridge Ventures to collateralize  its patents until the earlier of the effective
date of the IPO or a licensing  relationship or corporate  partnership agreement
with a third party which  provides  significant  operating  capital and clinical
development  resources for the Company.  Pursuant to this  arrangement,  the SAB
Agreement has resulted in the release of liens on the  Company's  patents in the
licensed territories.  Bridge Ventures has also released the patents assigned or
licensed  to the  Company's  subsidiaries.  Upon  consummation  of the IPO,  the
collateralization  of patents in connection with the 1994 Common Stock Financing
were terminated.

     In  addition,  in May 1994,  a former  officer and director of the Company,
guaranteed  payment of two promissory  notes in the aggregate  amount of $76,000
payable by the Company  representing  payments due in connection with the Temple
licensing  agreement.  In return for the  guarantee,  the Company  assigned  its
rights, patents and related technology in certain RNA compounds to such officer,
which rights will revert to the Company upon  repayment of the  principal on the
notes,  12% interest,  and certain fees and expenses  which were paid out of the
proceeds of the IPO.

     In  addition,  in 1991,  Vanderbilt  University  advised the Company of its
position that employees of the  University  were the inventors of an issued U.S.
patent  regarding the use of Ampligen in  combination  with various other agents
(including AZT) for the treatment of HIV infection, a position which the Company
believes has no merit. See "Risk Factors--Disputes and Legal Proceedings Related
to Patent Rights" and "Business--Legal Proceedings."

Competition

     The  development  of  therapeutic  drugs for  human  disease  is  intensely
competitive. Many different approaches are being developed for the management of
diseases  targeted by the Company.  Certain  viral  diseases and cancers are the
targets for therapeutic product development at numerous entities,  many of which
have greater human and financial  resources dedicated to product development and
human clinical testing than the Company. In addition, Ampligen will compete with
conventional  drug therapy,  as well as other  modalities  of treatment  such as
biological and hormonal  therapies,  prophylactic  and therapeutic  vaccines and
surgery.  Competing products include interferon-alpha and thymosin for treatment
of HBV,  interferon-alpha  and ribavirin for treatment of HCV and  interleukin 2
for treatment of kidney cancer. Interferon, a drug that has been approved by the
FDA for the  treatment  of  chronic  HBV,  acts by an  immune  mechanism  and is
beneficial  in the  treatment  of HBV,  where  it will be  competitive  with the
Company's product.  However,  its efficacy has thus far not been demonstrated in
HIV,  ME/CFS  and the  primary  tumors and  indications  which the  Company  has
targeted.  The  Company  is also aware of a  European  firm which is  conducting
clinical  trials of an RNA drug for at least one indication  (HBV) for which the
Company is testing Ampligen.  This firm has also conducted pre-clinical research
of the drug as a possible treatment for HIV infection.  The Company is not privy
to further information regarding other competing drug development activities, if
any, of this potential  competitor.  Competing products for the treatment of HIV
disease include AZT, DDI, DDC, D4T, 3TC and three approved protease inhibitors.

     There are a number of other  companies  engaged in developing  nucleic acid
pharmeuticals.  The approach used by certain of such companies seeks to identify
specific proteins and /or nucleotide sequences associated with viral replication
or cell  dysfunction and to design molecules that will selectively bind to these
"target  sites" in order to  interfere  with the  production  or activity of the
specific  disease-causing  protein involved.  This is the method currently being
employed  by some  researchers  through  the use of  so-called  "antisense"  and
"triple-strand"  nucleic acid  technologies  which are the pre-clinical or early
clinical  testing  phase.  Such an approach  requires the design,  synthesis and
testing of numerous  compounds  for each disease or  indication  being  treated.
Although  no  assurances  can be  given,  the  Company  believes  its  RNA  drug
development  technology  has certain  advantages  over these other  technologies
because the Company  believes its drugs may  activate  cell  defenses  which may
convey broad-spectrum activity against various diseases.

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<PAGE>

     The  pharmaceutical  and biotechnology  industries are subject to rapid and
substantial technological change.  Technological competition from pharmaceutical
and  biotechnology  companies,  universities,  governmental  entities and others
diversifying  into the field is intense  and is expected  to  increase.  Most of
these entities have significantly greater research and development  capabilities
than the Company,  as well as  substantial  marketing,  financial and managerial
resources,  and represent significant competition for the Company.  Acquisitions
of, or investments in, competing  pharmaceutical and biotechnology  companies by
large  pharmaceutical  companies  as well as  collaborative  efforts  among such
companies  could  increase  such  competitors'  financial,  marketing  and other
resources. There can be no assurance that developments by others will not render
the Company's products or technologies  obsolete or noncompetitive,  or that the
Company will be able to keep pace with technological  developments.  Competitors
have developed or are in the process of developing  technologies that are, or in
the future may be, the basis for  competitive  products.  Some of these products
may  have  an  entirely   different  approach  or  means  of  accomplishing  the
therapeutic effect than products being developed by the Company. These competing
products  may be more  effective  and less costly than the  Company's  products.
Furthermore,  many  of the  Company's  competitors  have  significantly  greater
experience than the Company in pre-clinical testing and human clinical trials of
pharmaceutical  products  and in  obtaining  regulatory  approvals  of products.
Accordingly,   the  Company's  competitors  may  succeed  in  obtaining  product
approvals  more  rapidly  than the  Company.  If any of the  Company's  products
receive regulatory  approvals and the Company commences  commercial sales of its
products, it will also be competing with respect to manufacturing efficiency and
marketing  capabilities,  areas in which it has  limited or no  experience.  The
Company's   competitors  may  possess  or  obtain  patent  protection  or  other
intellectual  property rights that prevent,  limit or otherwise adversely affect
the  Company's  ability to develop or exploit its  products.  See "Risk  Factors
- --Uncertainty  Regarding  Patents and  Proprietary  Rights" and "Risk Factors --
Rapid Technological Change and Substantial Competition."

Research and Development, Licensing and Collaboration Agreements

     In fiscal years 1992,  1993,  1994,  1995 and for the six months ended June
30, 1996, the Company expended $4,734,000,  $2,119,000, $1,638,000, $258,000 and
$694,505  respectively,  on research and  development,  consisting  primarily of
amounts spent on the clinical  testing and  development of Ampligen.  As part of
its research and  development  activities,  the Company has entered into various
collaborative and sponsored research  agreements with researchers,  universities
and government agencies.  The Company believes that these agreements provide the
Company with access to physicians and scientists with expertise in the fields of
clinical medicine,  virology,  molecular biology,  biochemistry,  immunology and
cellular biology.

     The  Company  has a  clinical  pharmacology  unit at  Hahnemann  University
Hospital in Philadelphia.  This clinical  pharmacology  unit performs studies on
Ampligen metabolism in the body, and initiates clinical trials at the Phase I/II
level.  The Company also plans to use this unit for its initial clinical studies
of Oragen drugs, subject to receipt of necessary clinical approvals.

     The Company does not own its own research and development or drug discovery
laboratories.  Instead,  employees of the Company's  collaborators conduct those
functions  at  the   laboratories  of  their   employers.   The  Company  has  a
long-standing  relationship with Hahnemann University,  which currently provides
laboratory  support in  conjunction  with licensing  arrangements  and financial
support from the Company. No assurances can be given that such relationship will
continue on terms advantageous to the Company, or at all.

     In June 1989, the Company  entered into an assignment and research  support
agreement (the "Hahnemann  Agreement")  with Hahnemann  University and Dr. David
Strayer,  Dr. Isadore  Brodsky and Dr. David  Gillespie who is now deceased (the
"Scientist Group"). Dr. Strayer is the Company's Medical Director.  Prior to the
execution of the Hahnemann  Agreement,  Hahnemann  and the  Scientist  Group had
participated  in the clinical  testing of  Ampligen.  In an effort to obtain the
benefits of the Scientist  Group's future  contributions  to the  development of
Ampligen  and obtain  exclusive  rights to certain  proprietary  and  regulatory
rights  relating to Ampligen,  the Company,  Hahnemann and the  Scientist  Group
entered into the Hahnemann  Agreement,  which provides (i) for the assignment by
Hahnemann  and the  Scientist  Group to the  Company of all of their  respective
rights in certain  proprietary  information which was then owned or subsequently
developed  and the  exclusive  and  perpetual  right to apply  for any  patents,
trademarks or copyrights relating to the proprietary  information;  (ii) for the
payment by the  Company to  Hahnemann  (and the  sharing  by  Hahnemann  and the
Scientist Group on such terms as they determine) of a royalty of 2% of net sales
proceeds (up to a maximum  royalty of $6 million per year) on all Ampligen  sold
by the Company or any entity licensed by the Company after the date of the grant

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<PAGE>

by the FDA of the first NDA for Ampligen  through January 1, 2005; (iii) for the
payment  by  the  Company  to  Hahnemann  of  $162,000  for  certain  scientific
consultative  support services to be performed by the Scientist Group during the
first year of the  Hahnemann  Agreement;  (iv) for the payment by the Company to
Hahnemann of certain  incremental  amounts for scientific  consultative  support
services to be rendered by the Scientist  Group  subsequent to the first year of
the Hahnemann  Agreement;  (v) that either party may  terminate  the  scientific
consultative  support  services  of  the  Scientist  Group  (and  the  Company's
obligations  to pay for those  services) on 90 days'  notice;  and (vi) that all
rights to discovery and inventions resulting from the Hahnemann Agreement are to
be the exclusive property of the Company.  The Company satisfied all amounts due
together with 8% annual  interest  calculable  from the due date of each payment
upon the Closing of the IPO.

     The  Company  has  entered  into  an  at-will  arrangement  with  Hahnemann
University, and Dr. Strayer, among others, pursuant to which the services of Dr.
Strayer,  among others,  are made available to the Company in return for monthly
salary  subsidization  payments  made  by the  Company  to the  University.  The
aggregate amount of these monthly payments is presently $14,896.

     In August  1988,  the Company  entered  into a  pharmaceutical  use license
agreement with Temple  University (the "Temple  Agreement").  Under the terms of
the Temple Agreement, Temple granted the Company an exclusive world-wide license
for the term of the agreement for the commercial  sale of Oragen  products using
patents and related technology held by Temple, which license is exclusive except
to the extent Temple is required to grant a license to any  governmental  agency
or  non-profit   organization  as  a  condition  of  funding  for  research  and
development of the patents and technology licensed to the Company. The rights to
such patents and related  technology had  previously  been assigned to Temple by
various parties,  including Dr. Robert J. Suhadolnik, an employee of Temple. The
Temple Agreement  provides (i) for the payment by the Company to Temple of 4% of
net sales of Oragen products the active ingredients of which consist entirely of
products,  processes or uses claimed by Temple's  patents and 2% of net sales of
Oragen products some, but not all, of the active ingredients of which consist of
products,  processes or uses claimed by Temple's patents, with minimum royalties
of $30,000 per year  commencing  in 1995;  (ii) that the  Company  must seek all
necessary  approvals for the commercial sale of Oragen products;  (iii) that the
Company  must  file an  application  for  marketing  approval  for at least  one
licensed  product with the FDA or a foreign  counterpart  on or before August 3,
1996; (iv) for the funding of specified  research  payments by the Company;  and
(v) that the Company shall have an exclusive option to negotiate for a period of
six months the terms of an  exclusive  license  for the  commercial  sale of any
future related  technology with respect to which Temple shall hold a patent. The
Temple Agreement expires upon the expiration of the last licensed patent, unless
sooner terminated by mutual consent,  upon the failure by the Company to pay any
required royalties or upon any material breach of the agreement. Dr. Suhadolnik,
as well as his  laboratory,  will derive income and  financial  support from any
royalties  paid by the Company.  The Company was notified by Temple in July 1994
that it  believed  the Company  was in breach of the Temple  Agreement  and that
Temple believed that the Temple Agreement was terminated.  The Company has filed
a lawsuit seeking a declaratory  judgement that the Temple Agreement  remains in
full force and effect and seeking monetary damages. Temple has filed a motion to
dismiss this lawsuit and in January 1995, Temple has filed a separate litigation
against the Company seeking  declaratory  judgment that the Temple Agreement has
been lawfully  terminated,  together with an award of costs,  including attorney
fees. See "Business--Legal  Proceedings" and "Risk  Factors--Disputes  and Legal
Proceedings Related to Patent Rights."

     In May  1992,  the  Company  entered  into a letter  agreement  to  provide
research payments to Dr. Werner E. Muller at the University of Mainz for various
exclusive 20-year  licensing  arrangements  including  certain  technologies for
genetic manipulation of the 2-5A pathway. The Company believes that the research
being conducted by Dr. Muller will provide general knowledge with respect to the
manipulation  of the cellular  mechanism by which  Ampligen  works.  The Company
agreed to make  quarterly  research  payments of $5,000 during the course of the
consultative  agreement,  which has no explicit  duration,  which  payments  are
presently accruing.

     In  addition  to the  arrangements  with Temple  University  and  Hahnemann
University described above, the Company has two types of collaborative  research
arrangements.   First,   the  Company  has  entered  into  "sponsored   research
arrangements"  with various  institutions  which  provide for the payment by the
Company of specified  financial  support to the  institutions  which conduct the
research.  Second,  the Company has entered  into  "collaborative  arrangements"
pursuant to which the institution  conducts studies of the Company's products at
the institution's  expense and gives the Company exclusive  commercial rights to
research results.  The Company provides its drugs to these  institutions free of
charge.   Collaborative  research  arrangements  provide  that  the  proprietary
knowledge is the sole property of the Company but permit the collaborator, after

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<PAGE>

a specified  time period,  to publish the results of its research in  scientific
medical  journals.  The  Company  has  research  agreements  with  the  National
Institute for Allergy and Infectious  Diseases on the use of Ampligen and Oragen
products in the treatment of HBV infection  and various  herpes and  respiratory
viruses and Hahnemann  University on the biochemical and molecular activities of
RNA. Other collaborators include the following entities or scientists therefrom:
the  National  Cancer  Institute,   Harvard  University  Medical  School,   Yale
University  Medical  School,  Vanderbilt  University,  University of Pittsburgh,
Howard  University,   Cornell  University,   Georgetown   University,   Stanford
University,  University  of  Pennsylvania,   Medical  College  of  Pennsylvania,
University of California at Davis and the Uniformed Services  University for the
Health Sciences.  International  collaborations include scientists from Konstanz
University  (Germany),  University  of Mainz  (Germany),  University  of Toronto
(Canada) and Juntendo University (Japan).

     The  Company  intends  to  continue  to  engage in such  collaborative  and
sponsored  research  with  selected  institutions.  There  can be no  assurance,
however,  that the Company will be able to maintain  its existing  collaborative
arrangements or enter into new collaborative arrangements.

Marketing

     The  Company  intends  to design its  marketing  strategy  to  reflect  the
differing health care systems around the world, and the different  marketing and
distribution  systems that are used to supply  pharmaceutical  products to those
systems.  In the United States,  the Company expects that, subject to receipt of
regulatory approval,  Ampligen will be used in three medical arenas: physicians'
offices or clinics,  the hospital and the home  setting.  The Company  currently
plans to use a service provider in the home infusion  (non-hospital)  segment of
the U.S.  market  to  execute  direct  marketing  activities,  conduct  physical
distribution of product and handle billings and  collections.  Accordingly,  the
Company is developing marketing plans to facilitate the product distribution and
medical  support for  indications,  if and when they are  approved . The Company
believes that this approach will  facilitate the generation of revenues  without
incurring the substantial costs associated with a sales force. Furthermore, this
approach  will enable the Company to retain  many  options for future  marketing
strategies.

     In September  1995, the Company entered into an agreement with Rivex Pharma
Inc., a Canadian-based pharmaceutical company ("Rivex"), pursuant to which Rivex
will provide various  services in connection with the exclusive  distribution of
Ampligen in Canada on an emergency drug release  basis.  Under the terms of this
agreement,  the Company will supply and Rivex will  purchase as much Ampligen as
necessary  to satisfy  Rivex's  customers  at a mutually  agreed  upon cost.  In
return, Rivex will retain the exclusive right to distribute Ampligen in Canada.

     In Europe, the Company plans to adopt a country-by-country  and, in certain
cases, an indication-by-indication,  marketing strategy due to the heterogeneity
of governmental regulations and alternative distribution systems in these areas.
The Company also plans to adopt an  indication-by-indication  strategy in Japan.
Subject to receipt of regulatory  approval,  the Company plans to seek strategic
partnering  arrangements  with  pharmaceutical  companies to facilitate  product
introductions  in  these  areas.  No  assurances  can be  given  that  any  such
arrangement  will be  entered  into on  terms  acceptable  to the  Company.  The
relative  prevalence of people  suffering from target  indications  for Ampligen
varies significantly by geographic region, and the Company intends to adjust its
clinical and marketing  planning to reflect the special needs of each area.  The
Company does not  currently  anticipate  devoting  significant  resources to the
establishment of an in-house sales force in the near term.

     In  countries  in South  America,  the  United  Kingdom,  Ireland,  Africa,
Australia,  Tasmania,  New Zealand, and certain other countries and territories,
the Company  contemplates  marketing its products through its relationship  with
SAB/Bioclones pursuant to the SAB Agreement. See "Business--General."

     The  Company is also  developing  a set of clinical  laboratory  diagnostic
products, trademarked Diagen products, that are designed to assist physicians in
identifying patients for the Company's RNA drug therapies and to assist in their
clinical  management  thereafter.  The Company believes that the availability of
such tests may lead to improved patient care and increased market penetration by
the Company's  therapeutic products, if and when such products are available for
commercial sale, although the Company does not anticipate  deriving  significant
revenues  directly from the commercial sale of Diagen products.  These tests are
at an early stage of development and the Company has received limited  royalties
in 1994 from its licensed  reference  laboratory in Texas.  The Diagen  products
would have to go  through a  regulatory  diagnostic  product  clearance  process
applicable to medical  devices prior to commercial  sale. In some cases,  use in
clinical   trials  may  require  FDA   clearances.   See   "Business--Government

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<PAGE>

Regulation"  below.  The  Company's  objective  is to  license  these  potential
products to a diagnostic  company.  The Company has granted rights to certain of
the  patents  related to the Diagen  products  to one of its  subsidiaries.  See
"Business--Subsidiary Companies."

Manufacturing

     Drug  intermediates  used in the production of Ampligen are manufactured to
order by Pharmacia Biotech, Inc. ("Pharmacia"),  a division of Pharmacia Upjohn,
Inc., a major multinational pharmaceutical company. In 1987, the Company entered
into an agreement  (the "Supply  Agreement")  with  Pharmacia  pursuant to which
Pharmacia agreed to supply and the Company agreed to purchase a specified amount
of drug intermediates and pay certain royalties to Pharmacia.  The provisions of
the Supply  Agreement  requiring the sup-  ply/purchase of compounds used in the
manufacture  of  Ampligen  expired in December  1992,  although  the  provisions
dealing  with the payment of royalties  survived.  Although the Company does not
currently  have a  written  agreement  with  Pharmacia  for the  supply  of drug
intermediates,  the Company believes that acceptable  alternative  sources exist
for the Company's present quantity requirements should the Company's arrangement
with  Pharmacia  terminate.  The Company  believes that it is not dependent on a
single source for any raw materials  used in the  manufacture  of Ampligen.  The
intermediates are analyzed by the Company for compliance with specifications and
then   transferred   to  a  contractor   which   formulates  the  Ampligen  drug
intermediates  under controlled  conditions to manufacture a freeze-dried dosage
form of  Ampligen.  The  Company  does not have a  written  agreement  with such
contractor.  The  freeze-dried  product is tested by the  Company  to  determine
compliance  with  a  set  of  technical   specifications.   Upon  meeting  these
specifications,  the product is  transferred to the Company and dosage units are
then prepared at the Company's Rockville, Maryland facility or at an appropriate
hospital  or other  pharmacy  facility.  Pharmacia  owns 9,216  shares of Common
Stock. In addition,  pursuant to the terms of the Supply Agreement,  the Company
agreed to pay the following royalties to Pharmacia: (a) for each substance based
on  Ampligen or related  RNA  compounds,  0.5% of net sales for 5 years from the
date of the first commercial sale (subject to a cap of $5 million per year and a
minimum of $60,000 per year for each  substance)  and (b) for each family of RNA
substances,  other than  substances  based on Ampligen or related RNA compounds,
0.5% of net  sales  for 5 years  from  the  date of the  first  commercial  sale
(subject  to a cap of $5 million  per year and a minimum of $60,000 per year for
each family of RNA substances). The obligation to pay royalties expires 12 years
from the date of the first royalty payment under the Supply Agreement.

     If necessary  regulatory  approvals  for  commercial  sale of a product are
obtained,  the Company's products must be manufactured in commercial  quantities
in compliance  with all  applicable  regulatory  requirements  and at acceptable
costs. The Company's  current  facilities and personnel are not adequate for the
production of its proposed products for large-scale commercialization. Moreover,
it is  not  likely  that  the  same  processes  can  be  used  successfully  for
commercial,  large scale production. Small changes in methods of manufacture may
affect  the  chemical  identity,  as well as the  safety  and  efficacy  of drug
products  such as Ampligen and other RNA drugs.  The Company  intends to utilize
third-party  facilities  or  if  it  is  unable  to  do  so,  build  or  acquire
commercial-scale  manufacturing  facilities and to add appropriate  personnel as
the need arises.

     Pursuant to the SAB Agreement,  the Company owns 24.9% of the capital stock
of a company which is  developing  and  operating a new  manufacturing  facility
South Africa built to FDA standards to produce the Company's RNA drugs.  A pilot
facility is currently being expanded. The Company expects that construction of a
commercial facility will commence in 1997 although the construction is dependent
upon the  regulatory  status of  Ampligen  in  various  global  markets,  and no
assurance can be given with respect to when, and if, construction will occur.

Government Regulation

     Overview.  Regulation by  governmental  authorities in the U.S. and foreign
countries is and will be a significant  factor in the  manufacture and marketing
of the  Company's  proposed  products  and in its ongoing  research  and product
development  activities.  All of the Company's proposed products and products of
its ongoing research and product development  activities will require regulatory
clearances prior to  commercialization.  In particular,  human new drug products
are subject to  rigorous  preclinical  and  clinical  testing as a condition  of
clearances  by the FDA and by  similar  authorities  in foreign  countries.  The
lengthy  process  of  seeking  these  approvals,  and  the  ongoing  process  of
compliance  with  applicable  statutes  and  regulations,  has required and will
continue to require the expenditure of substantial resources. Any failure by the
Company or its  collaborators or licensees to obtain, or any delay in obtaining,

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<PAGE>

regulatory  approvals  could  materially  adversely  affect the marketing of any
products  developed by the Company and its ability to receive product or royalty
revenue.

     The  Company  is also  subject to various  federal,  state and local  laws,
regulations  and  recommendations  relating  to such  matters  as  safe  working
conditions,  laboratory and  manufacturing  practices,  the  experimental use of
animals  and the use of and  disposal  of  hazardous  or  potentially  hazardous
substances,  including radioactive compounds and infectious disease agents, used
in connection  with the Company's  research work. The Company  believes that its
Rockville,  Maryland manufacturing and quality assurance/control  facility is in
substantial  compliance  with  all  material  regulations  applicable  to  these
activities.

     U.S. Regulatory Process. Before a new drug product may be sold commercially
in the  U.S.  and  other  countries,  clinical  trials  of the  product  must be
conducted and results submitted to the appropriate  regulatory  agencies as part
of the approval process.  The Company's  therapeutic and diagnostic products are
subject to  regulation  in the U.S.  under the Food,  Drug and Cosmetic Act (the
"FDC  Act").  Ampligen  and other RNA drugs will be reviewed as new drugs by the
FDA's Center for Drug Evaluation and Research ("CDER"), instead of as biological
products  which are  regulated  by FDA's  Center for  Biologics  Evaluation  and
Research  ("CBER").   Originally,   the  Company's  RNA  drugs  were  considered
biological  products subject to CBER jurisdiction.  As part of various memoranda
of  understanding  executed  recently among  different FDA  divisions,  however,
responsibility  for regulation of synthetic nucleic acids, such as the Company's
RNA drug  products,  including  Ampligen,  was  transferred in 1992 to the CDER.
Although  important  differences  exist  between the  regulation  of  biological
therapeutics and other drugs, the Company is unable to predict the impact of the
transfer of regulatory responsibility from CBER to CDER.

          (a) Drug Products.  The steps required  before a  non-biological  drug
     product  may be marketed in the U.S.  include  (a)  conducting  appropriate
     pre-clinical  laboratory  and animal  tests,  (b)  submitting to the FDA an
     application  for an  Investigational  New Drug  ("IND"),  which must become
     effective  before  human  clinical  trials  may  commence,  (c)  conducting
     well-controlled  human  clinical  trials  which  establish  the  safety and
     efficacy of the drug  product,  (d) filing a New Drug  Application  ("NDA")
     with  the FDA,  and (e)  obtaining  FDA  approval  of the NDA  prior to any
     commercial  sale or shipment of the drug.  In  addition  to  obtaining  FDA
     approval for each indication to be treated with each product, each domestic
     drug manufacturing  establishment must register with the FDA, list its drug
     products  with the FDA,  comply with current Good  Manufacturing  Practices
     ("GMP")  requirements  and be subject to  inspections  by the FDA.  Foreign
     manufacturing  establishments  also must comply with GMP requirements,  and
     are subject to periodic inspection by the FDA or by local authorities under
     agreement with the FDA.

     Pre-clinical tests include formulation  development,  laboratory evaluation
of product  chemistry  and animal  studies  to assess the  potential  safety and
efficacy of the product  formulation.  Drug  products  must be  manufactured  in
accordance with GMP  requirements  and  pre-clinical  tests must be conducted in
accordance with the FDA regulations  regarding Good  Laboratory  Practices.  The
results of the  pre-clinical  tests are  submitted to the FDA as part of the IND
and are reviewed by the FDA prior to authorizing the sponsor to conduct clinical
trials in human subjects.  Unless the FDA objects to an IND, the IND will become
effective 30 days  following its receipt by the FDA.  There is no certainty that
submission  of an IND will  result in FDA  authorization  to  commence  clinical
trials or that  authorization  of one phase of a clinical  trial will  result in
authorization  of other  phases  or that  clinical  trials  will  result  in FDA
approval.  Clinical  trials  may be  placed on hold by the FDA at any time for a
variety of reasons, particularly if safety or design concerns exist.

          (b)  Clinical  Testing  Requirements.   Clinical  trials  involve  the
     administration  of the  investigational  drug  product  to human  subjects.
     Clinical trials  typically are conducted in three phases and are subject to
     detailed protocols. Each protocol indicating how the clinical trial will be
     conducted  must usually be  submitted  for review to the FDA as part of the
     IND. The FDA's review of a study protocol does not  necessarily  mean that,
     if the study is successful, it will constitute proof of efficacy or safety.
     Further,  each clinical study must usually be conducted  under the auspices
     of an independent  Institutional  Review Board ("IRB") established pursuant
     to FDA  regulations.  The  IRB  considers,  among  other  factors,  ethical
     concerns, informed consent requirements,  and the possible liability of the
     hospital  conducting  the trials.  The FDA or IRB may require  changes in a
     protocol both prior to and after the  commencement of a trial.  There is no
     assurance  that the IRB or FDA will  permit a study to go forward  or, once
     started, to be completed.

                                       43
<PAGE>

     The three phases of clinical trials are generally  conducted  sequentially,
but they may  overlap.  In Phase I, the  initial  introduction  of the drug into
humans,  the  drug  is  tested  for  safety,  side  effects,  dosage  tolerance,
metabolism  and  clinical  pharmacology.  Phase  I  testing  for  an  indication
typically  takes at least one year to  complete.  Phase II  involves  controlled
tests in a larger but still limited patient population to determine the efficacy
of the drug  for  specific  indications,  to  determine  optimal  dosage  and to
identify  possible  side  effects  and safety  risks.  Phase II  testing  for an
indication  typically  takes at least from one and  one-half to two and one-half
years to complete.  If preliminary  evidence  suggesting  effectiveness has been
obtained during Phase II  evaluations,  expanded Phase III trials are undertaken
to gather the  additional  information  about  effectiveness  and safety that is
needed to evaluate  the  overall  benefit-risk  relationship  of the drug and to
provide an  adequate  basis for  physician  labeling.  Phase III  studies for an
indication  generally  take at least  from  two and  one-half  to five  years to
complete.  There can be no assurance that Phase I, Phase II or Phase III testing
will be completed successfully within any specified time period, if at all, with
respect  to any of the  Company's  products  that  have  not yet  completed  any
suchtesting.  Nor can there be any assurance that completion of clinical testing
will result in FDA approval. Furthermore, the FDA may suspend clinical trials at
any time if the  patients  are  believed to be exposed to a  significant  health
risk.  Phase III or other  clinical  studies may be conducted  after rather than
before approval under certain circumstances.  For example, the FDA may determine
under its accelerated approval  regulations that earlier studies,  involving the
use of  surrogate  markers  rather than  clinical  outcomes,  may  establish  an
adequate basis for drug product  approval,  providing that the sponsor agrees to
conduct an additional  study after  approval to verify and describe the clinical
benefit of the drug.  These and other similar  regulations,  however,  are often
limited to drug products that are intended to treat serious or  life-threatening
diseases,   especially  those  diseases  for  which  there  are  no  alternative
therapies,  or that  provide  meaningful  therapeutic  benefit to patients  over
existing  treatments.  The Company  believes  that  Ampligen may be eligible for
review under the FDA's "accelerated  approval" or other similar  regulations for
certain  indications;  however, the Company has not decided whether to seek such
accelerated  or other similar  approval and no assurances can be given that such
accelerated  or other  similar  approval,  if sought,  will be  granted  for any
indication pursuant to such regulations.

     In the case of drugs  for  life-threatening  diseases,  the  initial  human
testing is generally done on patients rather than on healthy volunteers. Because
these  patients are already  afflicted with the target  disease,  it is possible
that such studies may provide results traditionally obtained in Phase II trials.
These trials are referred to as Phase I/II trials.

     Reports of results of the  pre-clinical  studies  and  clinical  trials for
non-biological drugs are submitted to the FDA in the form of an NDA for approval
of the  marketing and  commercial  shipment.  The NDA also includes  information
pertaining to the  preparation  of drug  substances,  analytical  methods,  drug
product  formulation,  details on the manufacture of finished product as well as
proposed  product  packaging and labeling.  Submission of an NDA does not assure
FDA approval for marketing.  The application  review process generally takes two
to three years to complete,  although reviews of treatments for cancer and other
life-threatening diseases may be accelerated or expedited.  However, the process
may take  substantially  longer if, among other things, the FDA has questions or
concerns  about the safety  and/or  efficacy of a product.  In general,  the FDA
requires at least two properly conducted,  adequate and well-controlled clinical
studies demonstrating  efficacy with sufficient levels of statistical assurance.
However,  additional  information may be required. For example, the FDA also may
request  long-term  toxicity studies or other studies relating to product safety
or efficacy. Notwithstanding the submission of such data, the FDA ultimately may
decide  that the  application  does not  satisfy  its  regulatory  criteria  for
approval.  Finally,  the FDA may require additional clinical tests following NDA
approval to confirm product safety and efficacy (Phase IV clinical tests).

     Among  the  requirements  for  product  approval  is the  requirement  that
prospective  manufacturers conform to the FDA's GMP standards. In complying with
GMP standards,  manufacturers  must continue to expend time, money and effort in
production,  recordkeeping  and quality control to ensure that the product meets
applicable specifications and other requirements.  The FDA periodically inspects
drug manufacturing  facilities in order to ensure compliance with applicable GMP
requirements.  Failure to so comply  subjects the  manufacturer  to possible FDA
action,  such as the  suspension of  manufacturing,  seizure of the product,  or
voluntary recall of a product.

     The product  testing and approval  process is likely to take a  substantial
number of years and involves the expenditure of substantial resources. There can
be no assurance that any approval will be granted on a timely basis,  or at all.
The FDA also may require  post-marketing testing and surveillance to monitor the
record of the product and continued  compliance  with  regulatory  requirements.
Upon approval,  a drug may only be marketed for the approved  indications in the

                                       44
<PAGE>

approved dosage forms and at the approved dosages.  Adverse experiences with the
product must be reported to the FDA. The FDA also may require the  submission of
any lot of the product for  inspection  and may  restrict the release of any lot
that does not comply with FDA standards,  or may otherwise  order the suspension
of  manufacture,  recall or  seizure.  Product  approvals  may be  withdrawn  if
compliance with regulatory standards is not maintained or if problems concerning
safety or efficacy of the product occur following approval.

     In  addition  to  applicable  FDA  requirements,  the Company is subject to
foreign regulatory authorities governing clinical trials and drug sales. Whether
or not FDA approval has been  obtained,  approval of a product by the comparable
regulatory  authorities  of  foreign  countries  must be  obtained  prior to the
commencement  of  marketing  of the  product in those  countries.  The  approval
process  varies from  country to country and the time  required may be longer or
shorter than that required for FDA approval.

          (c)  Orphan  Drug  Status.  Under the  Orphan  Drug  Act,  the FDA may
     designate  drug  products as orphan  drugs if they are  intended to treat a
     rare disease or condition,  which is defined as a disease or condition that
     affects less than 200,000 persons in the U.S., or if there is no reasonable
     expectation of recovery of the costs of research and development from sales
     in the U.S. Provided certain conditions are met, orphan drug status confers
     upon the sponsor  certain  tax  credits  for  amounts  expended on clinical
     trials  prior to 1995,  as well as  marketing  exclusivity  for seven years
     following FDA approval of the product. Marketing exclusivity means that the
     FDA cannot approve another version of the same product for the same use for
     seven years after approval of the first product. However, the FDA can still
     approve a different  drug for the same use or the same drug for a different
     use. The FDA regulations implementing the Orphan Drug Act define what drugs
     are  the  "same"  for  purposes  of  the  seven  year  market   exclusivity
     provisions.  The  Company has been  advised  that  nucleic  acids and other
     complex drugs may present  potentially  difficult  orphan drug issues under
     these regulations.  The Company cannot predict how these provisions will be
     implemented with respect to its RNA products and competitive drugs. Certain
     benefits  of orphan  drug  status are only  available  upon  obtaining  FDA
     approval for marketing.  For example, orphan drug exclusivity only vests in
     the  same  designated  product  that is  first  to  receive  FDA  marketing
     approval. In 1993, Ampligen was designated as an orphan drug by the FDA for
     the clinical indications of AIDS and renal cell carcinoma. The Company does
     not believe that the former  designation  extends to HIV disease  which has
     not progressed to AIDS. In December 1993, the FDA designated Ampligen as an
     orphan drug for the clinical indications of invasive malignant melanoma and
     chronic  fatigue  syndrome.  The FDA has  recently  denied a request by the
     Company to  designate  Ampligen as an orphan  drug for  chronic  active HBV
     infection.  There is no  assurance  that any future  products  will receive
     orphan drug designation, or that the benefits currently available from such
     designations  for Ampligen  will not  hereafter  be amended or  eliminated.
     Various  legislative  proposals  have from time to time been  introduced in
     Congress to modify  various  provisions of the Orphan Drug Act.  Currently,
     Congress is  considering  legislation  that would amend the Orphan Drug Act
     and may limit the scope of marketing exclusivity. The tax credit provisions
     expired on December 31, 1994. No prediction can be made as to the effect of
     any such  proposed  legislation,  or any  other  legislation  which  may be
     introduced in the future, on the Company's operations.

          (d) Diagnostic  Products.  The Company's  potential Diagen  diagnostic
     products also must receive FDA clearance prior to any commercial marketing.
     The FDC Act regulates most in vitro diagnostic products as medical devices,
     and provides for two clearance mechanisms. Certain products may qualify for
     a Section 510(k)  procedure,  under which the manufacturer  gives the FDA a
     premarket  notification  ("510(k) Notice") of the manufacturer's  intent to
     commence  marketing the product.  The manufacturer  must establish that the
     product to be marketed is  "substantially  equivalent"  to another  legally
     marketed  product which is subject to a 510(k)  Notice or was  commercially
     marketed prior to May 28, 1976 and is not subject to premarket  application
     ("PMA") requirements. In some cases, a 510(k) Notice must include data from
     human  clinical  studies.  Normally,  marketing  may commence  when the FDA
     issues  an  order  to  the   manufacturer   finding   the   product  to  be
     "substantially  equivalent." If the product does not qualify for the 510(k)
     procedure,  the  manufacturer  must file a PMA which  includes  results  of
     extensive clinical and nonclinical tests  demonstrating that the product is
     both safe and effective.  The PMA process  requires more intensive  testing
     than the  510(k)  procedure,  involves  a  significantly  longer FDA review
     process,  and  usually  requires  review  by  an  FDA  scientific  advisory
     committee. Approval of a PMA allowing commercial sale of a product requires
     that its safety and  effectiveness  be demonstrated  through human clinical

                                       45
<PAGE>

     studies,  usually  conducted  under  an  Investigational  Device  Exemption
     ("IDE").  Some diagnostic  products may be clinically tested without an FDA
     approved IDE. It is unknown at this time whether an IDE will be required in
     order to clinically test Diagen  products.  In responding to a PMA, the FDA
     may grant marketing  approval,  request additional  information or deny the
     application  if it  determines  that the  application  does not satisfy its
     regulatory   approval   criteria.   There   can   be  no   assurance   that
     investigational  or marketing  approvals or clearances for Diagen  products
     will be granted to the Company.

     Canadian Regulatory  Process.  The regulatory approval process in Canada of
pre-clinical and clinical trials, manufacturing and sales of drugs, registration
of establishments which manufacture biologics,  compliance with GMP requirements
and periodic inspection by the HPB is, in general, similar to that in the United
States.

          (a) Investigational  New Drug Application.  Before conducting clinical
     trials of a new drug in Canada, a company must submit an IND application to
     the HPB containing  various  information  about the drug. In November 1992,
     the HPB approved the Company's  INDs to conduct  open-label  and controlled
     clinical trials of Ampligen for ME/CFS.  There is no assurance that the HPB
     will accept data obtained from those  clinical  trials in any submission of
     the Company to the HPB to market  Ampligen in Canada or that such data,  if
     accepted,  will result in the approval of Ampligen for sale in Canada.  The
     HPB may place clinical trials on hold at any time if safety concerns exist.

          (b) New Drug  Submission.  Before  marketing  or selling a new drug in
     Canada,  the Company must submit a New Drug  Submission  ("NDS") to the HPB
     and receive a notice of compliance  from the HPB to sell the drug.  The NDS
     includes  information  describing the new drug,  including its proper name,
     the proposed name under which the new drug will be sold, the specifications
     of the new drug, the methods of manufacturing, processing and packaging the
     new drug, the controls applicable to these operations,  the tests conducted
     to establish the safety of the new drug, the tests to be applied to control
     the potency,  purity,  stability and safety of the new drug, the results of
     clinical  trials  and  the  effectiveness  of the  new  drug  when  used as
     intended.  Submission  of an NDS does not assure HPB approval of a new drug
     for sale. If it determines the NDS meets the  requirements of Canada's Food
     and Drugs Act and  Regulations,  the HPB will issue a notice of  compliance
     for the new drug.

     The HPB may deny approval of an NDS if applicable  regulatory  criteria are
not  satisfied  or may require  additional  testing.  Product  approvals  may be
withdrawn  if  compliance  with  regulatory  standards is not  maintained  or if
problems  occur after the drug reaches the market.  The HPB may require  testing
and  surveillance   programs  to  monitor  the  new  drug  once  commercialized.
Non-compliance  with  applicable  requirements  can  result  in fines  and other
penalties, including product seizures and criminal prosecutions.

     Among the  requirements  for product  approval in Canada is the requirement
that a  prospective  manufacturer  conform to the HPB's GMP and good  laboratory
practices ("GLP")  standards.  Before  manufacturing a biologic,  a manufacturer
must have a license  from the HPB that is specific  to the site of  manufacture.
The HPB  periodically  inspects the drug  manufacturing  site in order to ensure
compliance  with  Canada's  Food and Drugs Act and  Regulations  and GMP and GLP
requirements. If there is a safety concern, the HPB, apart from other sanctions,
can suspend the manufacture of the product.

     Certain provinces in Canada have the ability to determine whether the costs
of a  drug  sold  within  such  province  will  be  reimbursed  by a  provincial
government  health  plan by  listing  drugs  on  formularies.  These  provincial
formularies  may affect the prices of drugs and the volume of drugs sold  within
provinces.  The Patented Medicines Prices Review Board has the ability to assess
whether the price of a patented  medicine is excessive  and, if determined to do
so, the Board has the ability to require the patent owner to reduce the price of
the patented  medicine,  to reduce the price of another patented  medicine or to
remit money to the government.

     Proposals have recently been made that, if implemented, would significantly
change Canada's drug approval system.  Proposals include establishing a separate
agency for drug  regulation and modeled on European  Community  agencies.  It is
uncertain  whether  drugs  such as the  Company's  would  be  evaluated  by this
separate agency, and the Company is unable to predict the impact, if any, on the
transfer of regulatory  responsibility  from the HPB to the separate agency. The
Company is unable to predict  whether these proposals will be implemented or, if
implemented, the effect thereof on the Company.

                                       46
<PAGE>

Properties

     The Company leases and occupies a total of approximately 18,850 square feet
of  laboratory  and office space in two states.  The corporate  headquarters  in
Philadelphia,  Pennsylvania  are located in a suite of offices of  approximately
15,000  square feet.  The  pharmacy,  packaging,  quality  assurance and quality
control  laboratories,  as well as  additional  office  space,  are  located  in
Rockville,  Maryland.  These facilities occupy  approximately 3,850 square feet,
approximately  2,000 of which are dedicated to the packaging and quality control
product release  functions.  The Company believes that its Rockville  facilities
will  meet its  production  requirements,  including  sufficient  quantities  of
Ampligen for planned clinical trials, through 1996, at which time it may need to
increase its manufacturing  capacity either through third parties or by building
or acquiring commercial-scale facilities.

     In addition, the Company has entered into the SAB Agreement, which provides
the Company with 24.9% of the capital stock of a company which is developing and
operating a new manufacturing  facility  financed by SAB/Bioclones.  The Company
expects that manufacturing at this new facility will commence in 1996,  although
no  assurance  can be given  that this will  occur.  A  commercial  facility  is
expected to be built in 1997.

Legal Proceedings

     The Company was a defendant in a lawsuit instituted in 1991 by participants
in a  double-blind  placebo-controlled  clinical  trial of Ampligen  therapy for
ME/CFS.  The plaintiffs  alleged that the Company or its alleged agents promised
them that they would receive Ampligen after the  placebo-controlled  study at no
cost for periods  ranging  from  "until  marketable"  to "for life".  Plaintiffs
sought  compensatory  and  punitive  damages.  The court  granted the  Company's
motions for summary  judgment upon all claims  alleged by the plaintiffs in this
case.  The  plaintiffs  have appealed from these orders before the United States
Court of Appeals for the Ninth  Circuit.  In January 1996,  the Court of Appeals
denied their appeal and sustained the  Company's  position.  On the basis of the
Court of Appeals  favorable  decision,  the Company believes the lawsuit is over
with no material effect on the Company.

     In February 1991,  Vanderbilt Universit advised the Company of its position
that  employees of the  university  were the inventors of an issued U.S.  patent
regarding  the  use  of  Ampligen  in  combination  with  various  other  agents
(including  AZT) for the  treatment of HIV  infections.  As issued,  this patent
names the Company's Chief Executive  Officer as sole inventor and the Company as
sole assignee.  The  university has demanded that the patent be reissued  naming
the  university's  employees as inventors and the  university  as assignee.  The
Company  refused  to take such  action.  No formal  claim has been  filed by the
university. If such claim were field and if such claim were found to have merit,
the loss of the patent at issue would not have a  materially  adverse  effect on
the Company's  long-range  business since the  university  would only be able to
limit and/or prevent the Company's use of Ampligen in  combinations  with AZT in
the treatment of HIV.

     In  November  1994,  the  Company  filed  suit  against  Temple  University
("Temple")  in the Superior  Court of the State of Delaware  ("Superior  Court")
seeking a declaratory  judgment that the Temple Agreement  remains in full force
and effect and seeking  monetary  damages in excess of $10 million for  Temple's
alleged  breach of its  obligations  of good faith and fair  dealing and certain
terms of the Temple Agreement. Temple has filed a motion to dismiss this lawsuit
upon the grounds of lack of personal jurisdiction. In January 1995, Temple filed
separate  litigation  against  the  Company  in the  Court  of  Common  Pleas of
Philadelphia County seeking  declaratory  judgment that the Temple Agreement has
been  lawfully  terminated  as of July 1, 1994,  together with an award of costs
including  attorney fees, in bringing the action. The court of Common Please has
stayed  further  proceedings  in  the  litigation  pending  the  outcome  of the
Company's  Superior Court case. If the Company were to lose its claim,  the loss
of the licensing agreement could have a material adverse effect on the Company's
future business as Temple or its new licensees, if any, could become competitors
of the Company.

     In March 1995, the Company instituted a declaratory judgment action against
the  February  1992  noteholder  of a $5 million  convertible  note and a second
defendant  in the United  States  District  Court for the  Eastern  District  of
Pennsylvania  (the  "Pennsylvania  action")  to declare  as void,  set aside and
cancel the February 1992 convertible note between the Company and the noteholder
(the"Note").  In addition, the noteholder instituted suit against the Company on
the Note in the  Circuit  Court of the 15th  Judicial  District  in and for Palm
Beach County, Florida,  seeking judgment on the note, plus attorneys fees, costs
and  expenses;  in August  1995,  this  action was stayed by the  Florida  Court
pending the outcome of the  Pennsylvania  action.  The  noteholder  also filed a
motion for a  preliminary  injunction  in the  Pennsylvania  court to enjoin the
Company from  disbursing  the proceeds of the IPO in the amount of $5.8 million,

                                       47
<PAGE>

which motion was granted in November,  1995.  On February 15, 1996,  the Company
reached  an  agreement  to  settle  this  matter.  Terms and  conditions  of the
settlement  include  payment of $6,450,000  to the  noteholder to cover the note
balance and legal  expenses.  The noteholder and related parties are to maintain
certain Warrants that were granted prior to the lawsuit.  Other Warrants granted
to the noteholder in the note restructuring in 1994 were relinquished. The funds
under this settlement were paid on March 21, 1996. Mutual releases were executed
which completed the settlement of the litigation.

     The  Company  is  subject  to claims  and legal  actions  that arise in the
ordinary  course  of their  business.  Management  believes  that  the  ultimate
liability,  if any, with respect to these claims and legal actions will not have
a material  effect on the  financial  position or results of  operations  of the
Company.

     The Company is not currently a party to any other material litigation.

Employees and Consultants

     As of July 10,  1996,  the Company  had 15  full-time  employees.  Of these
employees,  10 either  conduct or support the Company's  research,  development,
manufacturing,  regulatory  affairs or preclinical  testing.  The remaining five
employees perform general  administrative  functions including financial matters
and investor  relations.  In addition,  as of July 10, 1996,  eight  individuals
employed  at  academic   institutions   served  as  consultants  or  independent
contractors  to the  Company.  Such  persons  are  paid  pursuant  to  licensing
agreements with two universities.  As of July 10, 1996, there were approximately
29 additional  individuals  who served as part-time  consultants  or independent
contractors to the Company. In addition, other individuals throughout the United
States from time to time are retained by the Company as independent contractors,
either on a per diem or monthly  basis.  The Company  believes  that it has been
successful in attracting skilled and experienced scientific personnel;  however,
competition for such personnel is intense and there can be no assurance that the
Company will be able to attract and retain necessary  qualified employees and/or
consultants  in the  future.  None of the  Company's  employees  is  covered  by
collective bargaining agreements.

Scientific Advisory Board

     The Company  established  its Scientific  Advisory Board in March 1991. The
Scientific  Advisory Board consists of individuals who the Company believes have
particular expertise in immunology, virology, pharmacology, cancer therapeutics,
biochemistry  and related  fields.  These  individuals  advise the Company about
present  and  long-term  scientific  planning,  research  and  development.  The
Scientific  Advisory  Board holds  annual  meetings as required by the  clinical
studies in progress by the Company. In addition,  individual Scientific Advisory
Board members sometimes consult with, and meet informally with, employees of the
Company on a more frequent basis.  All members of the Scientific  Advisory Board
are employed by employers other than the Company and may have commitments to, or
consulting and/or advisory agreements with, other entities,  including potential
competitors of the Company,  that may limit their  availability  to the Company.
The time spent by Scientific  Advisory  Board  members on the Company's  affairs
varies.  Although individual members of the Scientific Advisory Board may devote
significant time and energy to the affairs of the Company, no member is expected
to devote more than a small  portion of his time to the Company.  Members of the
Scientific  Advisory  Board  are  compensated  at a rate of $1,500  per  meeting
attended or day  devoted to Company  affairs.  In  addition,  Doctors  Cheng and
Brodsky  have been granted  options to acquire  4,608 and 5,253 shares of Common
Stock,  respectively,   at  exercise  prices  of  $4.34  and  $1.06  per  share,
respectively.  As  described  elsewhere  herein,  Dr.  Brodsky is a party to the
Hahnemann  Agreement,  pursuant  to  which he is  entitled  to  receive  certain
royalties from the Company with respect to sales of Ampligen.  See "Research and
Development, Licensing and Collaboration Agreements."

                                       48
<PAGE>

     The  following  information  is  furnished  with  respect to members of the
Scientific Advisory Board:
<TABLE>
<CAPTION>

NAME                                POSITIONS                                 INSTITUTION
- ------                              -----------                               --------------
                                                                              
<S>                                 <C>                                       <C>
Isadore Brodsky, M.D.               Professor of Medicine and Head,           Medical College of Pennsylvania and
                                    Division of Hematology/Oncology           Hahnemann University School of
                                                                              Medicine, Philadelphia, Pennsylvania      

Yung-Chi Cheng, Ph.D.               Director, Developmental Therapeutics/     Yale University School of  Medicine,
                                    Chemotherapy Program                      New Haven, Connecticut
                                                                           
                                    Professor of Pharmacology and             Yale University Center, New Haven,
                                    Comprehensive Internal Medicine           Connecticut
                                                                              
Clyde Crumpacker, M.D.              Professor of Medicine                     Harvard Medical School,
                                                                              Boston, Massachusetts
                                    Physician                                 Harvard Medical School,
                                                                              Brigham & Women's Hospital,
                                                                              Beth Israel Hospital,
                                                                              Boston, Massachusetts
                                                                              
Robert A. Good, Ph.D.               Distinguished Professor                   Departments of Pediatrics
                                    and M.D., D.Sc.                           Microbiology, University
                                                                              of South Florida, Tampa, Florida

                                    Physician-in-Chief                        All Children's Hospital,
                                                                              St. Petersburg, Florida
                                                                              
James Greene, Ph.D.                 Associate Professor of Biology            Catholic University, Washington, D.C.
                                                                              
Anthony L. Komaroff, M.D.           Professor of Medicine,                    Harvard Medical School,
                                    Chief, Division of General Medicine       Brigham & Women's Hospital,
                                                                              Boston, Massachusetts
                                                                              
William Mitchell, M.D., Ph.D        Professor of Pathology                    Vanderbilt School of Medicine,
                                                                              Nashville, Tennessee                      
                                                                              
Phillip Roane, P h.D.               Associate Professor of                    Howard University, Washington, D.C.
                                    Microbiology                              
                                                                              
Kenny DeMeirleir, M.D., Ph.D.       Professor of Medicine                     Vrije Universiteit, Brussels, Belgium
</TABLE>
                                                                          

Data Safety Monitoring Board

     Because  the  Company  periodically  conducts  placebo-controlled  clinical
studies  in  chronic  incurable  diseases,  it  has  designated  a  Data  Safety
Monitoring  Board  comprised of independent  physicians,  scientists and patient
advocates.  During the  conduct of a  placebo-controlled  clinical  trial  (i.e.
involving the use of placebo for certain  patients  involved in the trial),  the
Data Safety Monitoring Board meets at  pre-determined  intervals to evaluate the
safety,  efficacy  and/or ethical  implications of a  placebo-controlled  trial.
Members of the Data Safety  Monitoring Board are compensated at a rate of $1,500
per meeting attended. Members are not allowed to hold stock in the Company.

     The following are members of the Data Safety Monitoring Board:
<TABLE>
<CAPTION>

NAME                                POSITIONS                              INSTITUTION
- ------                              -----------                            --------------

<S>                                 <C>                                   <C>
Robert A. Good, M.D.,               Distinguished Professor               Departments of Pediatrics and
Ph.D., D.Sc.                        Microbiology,                         University of South Florida,
                                                                          Tampa, Florida

                                    Physician-in-Chief                    All Children's Hospital,
                                                                          St. Petersburg, Florida

Lewis Marshall, M.D.                Associate Professor of Medicine       Howard University College of
                                                                          Medicine, Washington, D.C.
                                    Chief, Infectious Diseases            Providence Hospital,  Washington, D.C.
                                    Chief, Infectious Diseases            Columbia Hospital for Women,
                                                                          Washington, D.C.

The Rev. Daniel Paul                Rector                                Parish of Trinity Church,
                                    Matthews D.D.                         Wall Street, New York

Kenny DeMeirleir, M.D., Ph.D.       Professor of Medicine                 Vrije Universiteit, Brussels, Belgium
</TABLE>

                                       49
<PAGE>

                                   MANAGEMENT

Directors, Executive Officers and Key Employees

     The  Directors,  executive  officers,  key  employees  and  advisors of the
Company are as follows:

        Name                 Age        Position
        -----                ----       -------

William A. Carter, M.D.      59         Chairman, Chief Executive Officer,
                                          President

R. Douglas Hulse             52         Chief Operating Officer

Robert E. Peterson           59         Chief Financial Officer

David R. Strayer, M.D.       50         Medical Director, Director of Regulatory
                                          Affairs

Carol A. Smith, Ph.D.        45         Director of Manufacturing and Process
                                          Development

Josephine M. Dolhancryk      33         Treasurer, Assistant Secretary

Cedric C. Philipp            74         Director, Associate Secretary, Special
                                          Advisor to the Board/International

Richard C. Piani             69         Director

Peter W. Rodino III          43         Director, Secretary

Harris Freedman              61         Vice President, Corporate Communications

Sharon D. Will               36         Vice President, Investor Relations

E. Gerald Kay                58         Director

William A. Carter,  M.D.,  the  co-inventor  of Ampligen,  joined the Company in
1978,  and has served as (a) the Company's  Chief  Scientific  Officer since May
1989,  (b) the Chairman of the Company's  Board of Directors  since January 1992
(c) the Company's  Chief  Executive  Officer since July 1993,  (d) the Company's
President  since April,  1995, and (e) a director since 1987. From 1987 to 1988,
Dr. Carter served as the Company's Chairman.  Dr. Carter was a leading innovator
in the  development of human  interferon for a variety of treatment  indications
including  various viral diseases and cancer.  In this context,  he received the
first FDA  approval to initiate  clinical  trials on a beta  interferon  product
manufactured in the U.S. under his  supervision.  From 1985 to October 1988, Dr.
Carter served as the Company's Chief Executive  Officer and Chief Scientist.  He
received his M.D.  degree from Duke  University and underwent his  post-doctoral
training at the National Institutes of Health and Johns Hopkins University.  Dr.
Carter also serves as Professor of Neoplastic Diseases at Hahnemann  University,
a position he has held since 1980. He is also Director of Clinical  Research for
Hahnemann  University's  Institute for Cancer and Blood Diseases. Dr. Carter has
served as a professor at Johns Hopkins School of Medicine,  Hahnemann University
and the State University of New York at Buffalo.

R. Douglas Hulse was named Chief Operating  Officer on June 1, 1996.  Since July
1995, he had been Special  Advisor for Licensing and New Product  Development to
the Company's Board of Directors. Since 1995 he has served as Executive Director
of The Sage Group, a health care consulting firm  specializing in pharmaceutical
and biotechnology business development and strategic planning.  Between 1991 and
1994, Mr. Hulse was Vice President of Business  Development  for Enzon,  Inc., a
biopharmaceutical company with proprietary drug delivery technologies,  and from
1986 to  1991,  Mr.  Hulse  served  as an  independent  financial  and  business
development consultant to various biotechnology  companies. He was President and
CEO of i-STAT Corporation,  a manufacturer of medical  biosensors,  from 1984 to
1986 and Vice  President of Strategic  Planning for Engelhard  Corporation  from
1982  to  1984.  Mr.  Hulse  held  several   executive   positions  with  Halcon
International,  Inc., a leading chemical  company,  from 1968 to 1982. Mr. Hulse
received  Masters  degrees in  Industrial  Management  and Chemical  Engineering
Practice  from  M.I.T.  and a  Bachelors  degree  in  Chemistry  from  Princeton
University.

                                       50
<PAGE>

Robert E.  Peterson has served as Chief  Financial  Officer of the Company since
April 1993 and served as an  independent  financial  advisor to the Company from
1989 to April 1993. Mr. Peterson has also served since 1990 as Vice President of
the Omni Group,  Inc.,  a business  consulting  group based in Tulsa,  Oklahoma.
During the period  1983  through  1992,  Mr.  Peterson  was  self-employed  as a
financial consultant to businesses in various industries.  Mr. Peterson was Vice
President and Chief Financial Officer of Pepsico Foods  International  from 1979
to 1983 and responsible for financial management of this multinational operating
unit with  approximately  $500  million in annual  revenues.  Mr.  Peterson is a
graduate of Eastern New Mexico University.

David R. Strayer,  M.D., who serves as Professor of Medicine at Medical  College
of Pennsylvania and Hahnemann  University,  has acted as the Medical Director of
the Company since 1986. He is Board  Certified in Medical  Oncology and Internal
Medicine  with  research  interests  in the fields of cancer  and immune  system
disorders. Dr. Strayer has served as principal investigator in studies funded by
the Leukemia Society of America,  the American Cancer Society,  and the National
Institutes  of  Health.  Dr.  Strayer  attended  the School of  Medicine  at the
University of California at Los Angeles where he received his M.D. in 1972.

Carol A. Smith,  Ph.D. has served as the Company's Director of Manufacturing and
Process  Development  since April 1995, as Director of Operations since 1993 and
as the Manager of Quality Control from 1991 to 1993, with responsibility for the
manufacture,  control  and  chemistry  of  Ampligen.  Dr.  Smith  has also  been
Scientist/Quality  Assurance Officer for Virotech International,  Inc. from 1989
to 1991 and Director of the Reverse  Transcriptase  and Interferon  Laboratories
and a Clinical  Monitor for Life Sciences,  Inc. from 1983 to 1989. She received
her Ph.D.  from the University of South Florida  College of Medicine in 1980 and
was an NIH post-doctoral  fellow at the Pennsylvania State University College of
Medicine.

Josephine  M.  Dolhancryk  joined  the  Company in 1990 as Office  Manager,  was
promoted to Executive Assistant to the Chairman of the Board and Chief Executive
Officer in 1991 and Assistant Secretary,  Treasurer and Executive  Administrator
in 1995.  From 1989 to 1990 Ms.  Dolhancryk  was  President of  Medical/Business
Enterprises.  Ms. Dolhancryk was employed by Children's Hospital of Philadelphia
from 1984 to 1989, where she also served as research coordinator on a drug study
from  1986 to 1988.  Ms.  Dolhancryk  attended  Saint  Joseph's  University  and
Delaware County College.

E. Gerald Kay has served as a director of the Company since July 1994. From 1980
through the present,  he has served as Chairman of the Board and Chief Executive
Officer of Manhattan Drug Co., Inc. a provider of manufacturing  services to the
nutritional supplement industry, Chem International, Inc., the parent company of
Manhattan Drug Co., Inc., The Vitamin  Factory,  Inc. a retailer and direct mail
of nutritional products, and Connaught Press, a publisher. From 1993 to date, he
has served as a Director of Carte Medical Corp.  From 1986 to 1988,  Mr. Kay was
President and a director of the Rexall Group,  Inc. and from 1993 to 1994 served
as a  consultant  to Rexall  Sundown in the  establishment  of a  pharmaceutical
manufacturing  facility. Mr. Kay attended the University of Vermont and New York
University from 1961 to 1963.

Cedric C. Philipp has served as a director of the Company since July 1994 and as
Special  Advisor for  International  Marketing  since 1993.  He is  President of
Philipp  Pharmaceutical  Marketing,  a consulting firm which he founded in 1987.
From 1957 to 1987, he was with Wyeth International,  a division of American Home
Products,  during which time he served in various  capacities  in  international
marketing and sales, most recently as Executive Assistant to the President.  Mr.
Philipp  received  his A.B.  degree from  Columbia  College  and later  attended
Columbia Law School and the Graduate School of Princeton University.

Richard C. Piani has served as a director  of the  Company  since May 1995.  Mr.
Piani has been  employed as a  principal  delegate  for  Industry to the City of
Science and Industry, Paris, France, a billion dollar scientific and educational
complex since 1995. Mr. Piani provided  consulting to the Company in 1993,  with
respect to general business strategies for the Company's European operations and
markets.  He served as Chairman of  Industrielle du  Batiment-Morin,  a building
materials  corporation,  from  1986 to  1993.  Previously  he was  Professor  of
International Strategy at Paris Dauphine University from 1984 to 1993. From 1979
to 1985 Mr.  Piani  served as Group  Director  in Charge  of  International  and
Commercial  Affairs for  Rhone-Poulenc  and from 1973 to 1979 was  Chairman  and
Chief  Executive  Officer of Societe "La  Cellophane",  the French company which
invented  cellophane and several other worldwide  products.  Mr. Piani has a Law
degree  from  Faculte de Droit,  Paris  Sorbonne  and a Business  Administration
degree from Ecole des Hautes Etudes Commerciales, Paris.

                                       51
<PAGE>

Peter W. Rodino III has served as a director of the Company  since July 1994 and
Secretary of the Company since November  1994. He had  previously  served on the
Company's Board of Directors from 1987 to 1989. From 1988 through the present he
has  served  as  Managing  Partner  of the law firm  Rodino  and  Rodino,  which
primarily deals in corporate, commercial, insurance, real estate, environmental,
bankruptcy and  immigration  law. He was a partner in the law firm of Rodino and
Scalera,  Inc.  from 1988 to 1991.  He has  served as  Chairman  of the Board of
Directors  of the  Foundation  Health Plan of New Jersey,  an IPA/HMO  providing
health care services,  from 1983 to 1988 and as a Director of Columbus  Hospital
from 1986 to 1990.  Mr.  Rodino  earned a B.S. in Business  Administration  from
Georgetown  University in 1973 and a J.D. from Seton Hall  University  School of
Law in 1976.

Harris  Freedman has served as Vice  President  for  Strategic  Alliances  since
August 1994 and has been a private  venture  capitalist and business  consultant
for more than the past five years. He is the Secretary of Bridge Ventures,  Inc.
( Bridge  Ventures ) and SMACS Holding Corp.,  both of which are private venture
capital companies,  positions he has held for more than five years. His business
experience has encompassed  developing  significant business contacts and acting
as an officer or director of several  companies  in the  pharmaceutical,  health
care and entertainment  fields.  Mr. Freedman was Vice President of U.S. Alcohol
Testing of America,  Inc., from August 1990 to February 1991.  Additionally,  he
was Vice  President  East Coast  Marketing  for  MusicSource  U.S.A.,  Inc. from
October 1992 to January 1994. Mr.  Freedman  attended New York  University  from
1951 to 1954.

Sharon D. Will has been Vice President for Corporate Communications and Investor
Relations  since November 1994.  Prior to that time, she was a registered  sales
representative  and Senior Vice President for  Institutional  Sales at Westfield
Financial  Corporation from September 1994 to October 1994. She was a registered
sales  representative  with Marsh Block  Corporation from July 1994 to September
1994.  From  October  1993  to  July  1994  she  served  as a  registered  sales
representative  at Seaboard  Securities Corp. From October 1991 to present,  Ms.
Will  has  been  President  of  Worldwide   Marketing   Inc.  a   manufacturers'
representative  of various  companies  selling to the retail trade markets.  Ms.
Will was the National Sales Manager of Innovo, Inc., a domestic  manufacturer of
textiles,  from October 1989 to November 1991. She attended Baylor College as an
undergraduate for two years with a primary focus on chemistry.

Board Committees

     The Board of  Directors  maintains  an Executive  Committee  consisting  of
William A.  Carter and Peter W.  Rodino  III,  which  makes  recommendations  to
management  regarding  general business  matters of the Company;  a Compensation
Committee consisting of Peter W. Rodino III, Richard C. Piani and E. Gerald Kay,
which makes  recommendations  concerning salaries and compensation for employees
of and consultants to the Company;  an Audit  Committee  consisting of Cedric C.
Philipp and E. Gerald Kay,  which reviews the results and scope of the audit and
other  services  provided by  independent  auditors;  and a  Strategic  Planning
Committee  consisting  of William A.  Carter,  Peter W. Rodino III and Cedric C.
Philipp,  which  makes  recommendations  to  the  Board  of  priorities  in  the
application of the Company's  financial assets and human resources in the fields
of research, marketing and manufacturing.

Compensation of Directors

     During  the fourth  quarter of fiscal  1995,  each  non-employee  directors
received  $3,750 as  compensation  for serving on the Board of  Directors or any
committee  thereof.  Certain  non-employee  directors  receive  compensation  as
consultants  to the Company  and have been  granted  options to purchase  Common
Stock  under the  Company's  1990 Stock  Option  Plan and Rule 701  Warrants  to
purchase  Common Stock of the Company.  All of the directors are  reimbursed for
their expenses incurred in attending  meetings of the Board of Directors and its
committees.  Currently,  non-management  directors receive an annual retainer of
$15,000 and receive  $600 for each Board or  committee  meeting  they attend and
will be reimbursed for out of pocket  expenses  incurred in attending  meetings.
The Company  believes  such  payments are  necessary in order for the Company to
attract and retain qualified outside directors.

     In addition,  in October 1994, the Board of Directors  granted to Cedric C.
Philipp,  a  director  of the  Company  and  Special  Advisor  to the  Board for
International  Marketing,  the right to receive 3% of the gross  proceeds of any
licensing fees and prepaid royalties received by the Company pursuant to the SAB
Agreement  and a fee of .75% of gross  proceeds in the event that  SAB/Bioclones

                                       52
<PAGE>

makes a tender  offer  for all or  substantially  all of the  Company's  assets,
including a merger,  acquisition or related transaction,  and 1% of all products
manufactured by SAB/Bioclones.  The Company may prepay in full the obligation to
provide commissions up to $1,050,000 within a ten year period. These rights were
granted to Mr.  Philipp in exchange for his services in the  negotiation  of the
SAB  Agreement  and his  services  in  connection  with  various  marketing  and
licensing opportunities for the Company. In addition, the Company further agreed
to  provide  a  monthly  retainer  of  $2,000 to Mr.  Philipp  in  exchange  for
consulting   services  related  to  general   pharmaceutical  and  international
marketing   services  and  remuneration   for  corporate   alliances  which  are
principally  introduced  by Mr.  Philipp.  Mr.  Philipp  has been paid  $110,000
pursuant to these arrangements through December 31, 1995.

     In June 1995,  the Board of Directors  of  BioAegean,  a subsidiary  of the
Company,  issued an aggregate of 550,000  BioAegean Options at an exercise price
of $1.00 per share to Dr.  William A. Carter,  E. Gerald Kay,  Cedric C. Philipp
and Peter Rodino, III, directors of the Company.

     In October and November 1994, the Company granted an aggregate of 1,480,000
Rule 701  Warrants to purchase  shares of Common Stock at $3.50 per share to Dr.
Carter,  Mr. Kay, Mr.  Philipp and Mr.  Rodino,  directors  of the Company,  and
Maryann  Charlap  Azzato  a  former  director  of  the  Company.   See  "Certain
Transactions."

In 1994 and 1993 the Company issued shares of Series C Preferred  Stock at $5.00
per share to certain directors in various  transactions  including certain sales
of Series C  Preferred  Stock and  conversion  of  certain  debt.  See  "Certain
Transactions."

Executive Compensation

     Summary   Compensation  Table.  The  following  table  sets  forth  certain
information  with respect to the  compensation  of the Company's Chief Executive
Officer and the other most highly compensated  executive officers of the Company
for the fiscal year ended December 31, 1995.


                             EXECUTIVE COMPENSATION
                           SUMMARY COMPENSATION TABLE
<TABLE>
<CAPTION>

Name and                                                Other Annual        Restricted Stock      Option            All other
Principal Position           Year       Salary       Compensation($)(1)       Awards($)(13)       Awards       Compensation($)(2)
- ------------------           ----       ------       ------------------     ----------------      -------      ------------------
<S>                          <C>       <C>                 <C>                    <C>         <C>                  <C>  
William A. Carter            1995      $363,420(3)(4)       --                     --            300,000(8)           7,778
  Chairman of the Board      1994       363,420(3)(5)       --                     --          1,400,000(9)           7,778
  Chief Executive Officer    1993       363,420(3)          --                     --                --               7,778
                                                                                                                    
Robert E. Peterson           1995       120,000(6)          --                     --             50,000(10)            --
  Chief Financial Officer    1994       110,000(7)          --                     --                --             
                             1993        86,300             --                     --                --                 --
                                                                                                                    
Sharon Will                  1995       125,000             --                     --             50,000(10)            --
  Vice President             1994           --              --                     --            200,000(11)            --
                             1993           --              --                     --                --                 --
                                                                                                                    
David R. Strayer, M.D.       1995       115,083             --                     --                --                 --
  Medical Director           1994           --              --                     --                --                 --
                             1993           --              --                     --                --             
                                                                                                                    
Harris Freedman              1995       112,500             --                     --            150,000(10)            --
  Vice President             1994           --              --                     --            400,000(12)            --
                             1993           --              --                     --                --                 --
</TABLE>

- -------------
(1)  The Company makes available certain  non-monetary  benefits to its officers
     with  a  view  to  attracting   and  retaining   qualified   personnel  and
     facilitating  job  performance.  The Company  considers such benefits to be
     ordinary and incidental business costs and expenses. The aggregate value of
     such benefits, which cannot be precisely ascertained but which is less than
     10% of the cash compensation of each of the above-named executive officers,
     is not included in the table.

(2)  Consists of  insurance  premiums  paid by the Company  with respect to term
     life insurance for the benefit of the named executive officer.

(3)  Includes $63,000 paid to Dr. Carter by Hahnemann University where he serves
     as a professor.

                                       53
<PAGE>

(4)  Does not include  $224,015  paid in 1995 for salary  deferred from 1993 and
     1994.

(5)  Includes $137,692 in deferred salary for 1994.

(6)  Mr.  Peterson  joined the Company in April 1993 and is paid on a fee basis.
     Compensation includes $25,625 in deferred salary for 1995.

(7)  Includes $33,500 in deferred salary for 1994.

(8)  BioAegean  Options to purchase  300,000 shares of common stock of BioAegean
     Corp., a subsidiary of the Company,  at $1.00 per share, which were granted
     in May 1995 (the "BioAegean Options").

(9)  Rule 701 Warrants to purchase  Common  Stock at $3.50 per share  granted in
     October  1994.  These Rule 701 Warrants  vest in 1/3  increments  over a 36
     month period. Rule 701 Warrants are warrants which were issued to officers,
     directors and  consultants  of the Company in reliance upon Rule 701 of the
     Securities Act.

(10) BioAegean Options.

(11) Rule 701 Warrants to purchase  common  stock at $3.50 per share  granted in
     November 1994.

(12) Rule 701 Warrants to purchase  common  stock at $3.50 per share  granted in
     August 1994.

(13) As of December 31, 1995,  Sharon Will had 100,000  shares of 144 restricted
     stock valued at $228,125  using the average  closing bid and asked price on
     December 31, 1995 of $2.28.  As of December 31, 1995,  Harris  Freedman had
     150,000  shares of Rule 144  restricted  stock valued at $342,000 using the
     average closing bid and asked price on December 31, 1995 of $2.28.

     Year End Option Table.  The following table sets forth certain  information
regarding  the stock  options  held as of December  31, 1995 by the  individuals
named in the above  Summary  Compensation  Table.  David  Strayer,  M.D. did not
exercise any stock options in the last fiscal year.


                 AGGREGATED OPTION EXERCISES IN LAST FISCAL YEAR
                           AND FISCAL YEAR-END OPTION
<TABLE>
<CAPTION>

                                                         Securities Underlying         Value of Unexercised
                                                        Unexercised Options at         In-the-Money-Options
                                                           Fiscal Year End(#)          at Fiscal Year End ($)
                     Shares Acquired    Value         ---------------------------   -------------------------
    Name             on Exercise (#)  Realized ($)    Exercisable   Unexercisable    Exercisable  Unexercisable
    -----            --------------   ------------    -----------   -------------    ----------   ------------
<S>                    <C>             <C>            <C>             <C>              <C>          <C>       
William A. Carter           --              --        1,091,355(1)    1,233,333(2)     292,188           --
Robert E. Peterson          --              --            6,912(3)       56,912(4)          --           --
Sharon Will                 --              --          341,667(5)      283,333(6)     146,094           --
Harris Freedman        975,494(7)      416,667(8)       292,188              --
</TABLE>

- ----------
(1)  Includes (i) 466,667  currently  exercisable  Rule 701 Warrants to purchase
     Common  Stock at $3.50 per share;  (ii)  73,728  stock  options to purchase
     Common  Stock at $3.50 per share;  (iii) 960  warrants to  purchase  Common
     Stock at $3.50 per share;  and (iv) warrants to purchase  550,000 shares of
     Common Stock at $1.75 per share.

(2)  Includes 933,333 Rule 701 Warrants and 300,000 BioAegean Options.

(3)  Stock options to purchase Common Stock at $4.34 per share.

(4)  Includes 50,000 BioAegean Options and 6,912 stock options.

(5)  Includes  66,667  currently  exercisable  Rule  701  Warrants  and  275,000
     warrants to purchase Common Stock at $1.75 per share.

(6)  Includes 150,000 BioAegean Options and 133,333 Rule 701 Warrants.

(7)  Includes (i) 133,333 Rule 701 Warrants currently exercisable;  (ii) 292,161
     warrants to purchase  common  stock at $3.50 per share;  and (iii)  550,000
     warrants to purchase Common Stock at $1.75 per share.

(8)  Includes 266,667 Rule 701 Warrants and 150,000 BioAegean Options.

                                       54
<PAGE>

     Option Grant Table.  The  following  table sets forth  certain  information
regarding  options granted during the fiscal year ended December 31, 1995 by the
Company to the individuals named in the above Summary Compensation Table:


                        OPTION GRANTS IN LAST FISCAL YEAR


                                      % of Total
                                        Options
                        Options       Granted to
                        Granted      Employees in    Exercise Price   Expiration
Name                      (#)        Fiscal Year     $/Share             Date
- -----                  ---------      -----------     ------------    ----------
William A. Carter      300,000(2)        46%              $1.00          5/4/05
Robert E. Peterson      50,000(2)         8%              $1.00          5/4/05
Sharon Will            150,000(2)        23%              $1.00          5/4/05
Harris Freedman        150,000(2)        23%              $1.00          5/4/05

- ------------
(1)  Amounts  represent  hypothetical  gains  that  could  be  achieved  for the
     respective options if not exercised until the end of the option term. These
     gains are based on assumed rates of stock price  appreciation of 5% and 10%
     (as required under the rules and regulations of the Commission)  compounded
     annually  from the dates  the  respective  options  were  granted  to their
     respective  expiration  dates.  This table does not take into  account  any
     appreciation in the price of the Common Stock to date.

(2)  In June 1995, the Board of Directors of BioAegean  Corp.  ("BioAegean"),  a
     subsidiary of the Company,  issued  options to purchase the common stock of
     BioAegean  at an exercise  price of $1.00 per share.  In  consideration  of
     these options,  the  recipients  agreed to serve  BioAegean's  needs for at
     least 24 months unless fully  incapacitated.  There is no public market for
     BioAegean shares.


             LONG-TERM INCENTIVE PLANS - AWARDS IN LAST FISCAL YEAR


                                                                Performance or
                                       Number of                 Other Period
                                     Shares, Units             Until Maturation
Name                             or Other Rights(#)(1)            or Payout
- -----                              -----------------            ---------------

William A. Carter                      300,000                      5/4/05
   Chairman of the Board
   Chief Executive Officer

Robert E. Peterson                      50,000                      5/4/05
   Chief Financial Officer

Sharon Will                            150,000                      5/4/05
   Vice President

Harris Freedman                        150,000                      5/4/05

- -----------
(1)  BioAegean Options to purchase common stock of BioAegean Corp., a subsidiary
     of the Company at $1.00 per share which were granted in May 1995.


Employment Agreements

     The Company entered into an employment agreement with Sharon Will providing
for her employment as Vice President for Corporate  Communications  and Investor
Relations  on  November  1, 1994.  The  agreement  provides  for Ms.  Will to be
employed  for a one-year  term for a base salary of $120,000  and  provides  for
termination of the agreement upon certain circumstances including termination by
the  Company or Ms.  Will on 14 days  written  notice or the sale of Ms.  Will's
stock in the Company.  Pursuant to the agreement,  Ms. Will was granted Rule 701
Warrants to purchase  200,000 shares of Common Stock of the Company at $3.50 per
share. Ms. Will's  agreement  provides that she shall devote 60% of her business
time,  attention and energies to the Company during regular  business  hours. In
the event that Ms. Will's  employment  is  terminated  for any reason other than

                                       55
<PAGE>

breach  of  contract,  she shall be  entitled  to  receive  accrued  and  unpaid
compensation  plus an additional three months'  compensation.  In July 1995, the
term of Ms.  Will's  employment  agreement  was extended  from one year to three
years.

     The Company  entered  into an  employment  agreement  with Harris  Freedman
providing  for  Mr.  Freedman's  employment  as  Vice  President  for  Strategic
Alliances  on August 1, 1994.  The  agreement  provides  for Mr.  Freedman to be
employed  for a one year term for a base salary of  $120,000  and  provides  for
termination of the agreement upon certain circumstances  including  termina-tion
by the  Company or Mr.  Freedman  on 14 days  written  notice or the sale of Mr.
Freedman's  stock in the Company.  Pursuant to the agreement,  Mr.  Freedman was
granted  Rule 701  Warrants to purchase  400,000  shares of Common  Stock of the
Company at $3.50 per share.  Mr.  Freedman's  agreement  provides  that he shall
devote 30% of his business  time,  attention and energies to the Company  during
regular  business  hours.  In  the  event  that  Mr.  Freedman's  employment  is
terminated for any reason other than breach of contract, he shall be entitled to
receive  accrued  and  unpaid  compensation  plus an  additional  three  months'
compensation. In July 1995, the term of Mr. Freedman's employ-ment agreement was
extended from one year to three years.

     The Company entered into an amended and restated employment  agreement with
Dr.  William  A.  Carter,  dated as of July 1, 1993 and as amended in July 1995,
which  provides for his  employment  until May 8, 2001 at an initial base annual
salary of $295,832, subject to annual cost of living increases. In addition, Dr.
Carter may receive an annual  performance bonus of up to 25% of his base salary,
in the  sole  discretion  of  the  Board  of  Directors.  Dr.  Carter  will  not
participate in any discussions concerning the determination of his annual bonus.
Dr. Carter is also entitled to an incentive  bonus of 0.5% of the gross proceeds
received  by  the  Company  from  any  joint  venture  or  corporate  partnering
arrangement, up to an aggregate maximum incentive bonus of $250,000 for all such
transactions.  It is  contemplated  that Dr.  Carter  will be  entitled  to this
incentive  bonus upon receipt of the gross  proceeds  from the SAB Agreement (as
defined in "Certain Transactions"). Dr. Carter's agreement also provides that he
shall  be paid  his  base  salary  and  benefits  through  May 8,  1996 if he is
terminated  without "cause," as that term is defined in the agreement.  Pursuant
to his original agreement,  as amended on August 8, 1991, Dr. Carter was granted
options to purchase  73,728 shares of the Company's  Common Stock at an exercise
price of $2.71 per share.

1992 Stock Option Plan

     The Company's  1992 Stock Option Plan (the "1992  Plan"),  provides for the
grant of options for the  purchase  of up to an  aggregate  of 92,160  shares of
Common Stock to the Company's employees, directors, consultants and others whose
efforts  are  important  to the  success  of  the  Company.  The  1992  Plan  is
administered by the Compensation Committee of the Board of Directors,  which has
complete  discretion  to select  the  eligible  individuals  to  receive  and to
establish the terms of option grants. The 1992 Plan provides for the issuance of
either non-qualified options or incentive stock options, provided that incentive
stock  options  must be  granted  with an  exercise  price of not less than fair
market value at the time of grant and that  non-qualified  stock options may not
be granted  with an exercise  price of less than 50% of the fair market value at
the time of grant.  The  number of shares of Common  Stock  available  for grant
under the 1992 Plan is subject to adjustment for changes in  capitalization.  To
date, no options have been granted under the 1992 Plan.

1990 Stock Option Plan

     The  Company's  1990  Stock  Option  Plan,  as amended  (the "1990  Plan"),
provides for the grant of options to employees, directors, officers, consultants
and  advisors of the Company for the  purchase of up to an  aggregate of 460,798
shares of Common Stock. The plan is administered by the  Compensation  Committee
of the Board of  Directors,  which has complete  discretion  to select  eligible
individuals to receive and to establish the terms of option  grants.  The number
of shares of Common Stock  available for grant under the 1990 Plan is subject to
adjustment for changes in  capital-ization.  As of December 31, 1995, options to
acquire an  aggregate  of 228,502  shares of the Common  Stock were  outstanding
under the 1990 Plan.

                                       56
<PAGE>

401(K) Plan

     In December  1995,  the Company  established a defined  contribution  plan,
effective  January 1, 1995, the HemispherX  Biopharma  employees 401(K) Plan and
Trust Agreement (the "401(K) Plan").  All full time employees of the company are
eligible to  participate  in the 401(K) Plan  following one year of  employment.
Subject to certain  limitations  imposed by federal tax laws,  participants  are
eligible to  contribute  up to 15% of their  salary  (including  bonuses  and/or
commissions  per annum.  Participants'  contributions  to the 401(K) Plan may be
matched by the Company at a rate determined  annually by the Board of Directors.
Each participant  immediately vests in his or her deferred salary contributions,
while  Company  contributions  will  vest  over one  year.  In 1995 the  Company
provided  matching  contributions to each employee for up to 6% of annual pay or
$25,500.  The  Company  also  absorbed  the cost of  employee  contributions  of
$25,000.

Compensation Committee Interlocks and Insider Participation

     During  the  fiscal  year  ended  December  31,  1995,  the  members of the
Company's  Compensation  Committee were William A. Carter,  Peter W. Rodino III,
and E.  Gerald  Kay.  Dr.  Carter is an officer of the  Company.  The  Company's
Compen-sation  Committee  currently  consists of Peter W. Rodino III, Richard C.
Piani  and  E.  Gerald  Kay.  The  following   transactions   describe   certain
relationships  between  the  Company  and  present  and  former  members  of the
Compensation Committee:

     In May 1995, Dr. Carter,  E. Gerald Kay and certain other  individuals  and
entities  entered  into a 1995  Standby  Financing  Agreement  with the  Company
pursuant  to which they were  collectively  obligated  to invest  during 1995 an
aggregate  of  $5,500,000  in the Company in the event the Company was unable to
secure alternative financing and the Board of Directors determined that the sale
of  securities  to such  persons  was  advisable  (the "1995  Standby  Financing
Agreement"). In exchange for entering into the 1995 Standby Financing Agreement,
the Company issued to each of the parties  ten-year  warrants to purchase 50,000
shares of the Company's Common Stock at an exercise price of $1.75 per share for
each $100,000 of standby financing obligation assumed by the party, resulting in
warrants  to purchase an  aggregate  of  2,750,000  shares of Common  Stock.  In
September 1995, the parties to the 1995 Standby Financing  Agreement,  including
Dr. Carter and Mr. Kay, agreed to extend their obligations  through December 31,
1996.

     In June 1995,  the  directors  of  BioAegean  Corp.,  a  subsidiary  of the
Company,  issued 10-year options to purchase an aggregate of 1,200,000 shares of
common  stock  of  BioAegean  at an  exer-cise  price of $1.00  per  share  (the
"BioAegean  Options") to its officers and directors.  The BioAegean  Options are
conditional  upon the recipient's  agreement to serve BioAegean as needed for at
least 24 months unless fully  incapacitated.  William A. Carter, M.D., serves as
Chairman,  Chief  Executive  Officer and a Director of  BioAegean  and  received
300,000  BioAegean  Options.  Peter  W.  Rodino  III  serves  as  Vice-Chairman,
Secretary,  Corporate  Counsel and a director of BioAegean and received  150,000
BioAegean  Options.  R.  Douglas  Hulse  serves as Chief  Operating  Officer  of
BioAegean and received 50,000  BioAegean  Options.  Richard C. Piani serves as a
director and the Advisor for European  Affairs of BioAegean and received  50,000
BioAegean Options. E. Gerald Kay serves as a director for BioAegean and received
50,000 BioAegean Options.

     In March 1995, the Company received an  interest-free  loan from William A.
Carter in the amount of $35,000. In March 1995, the Company repaid the loan from
Dr. Carter.

     In February  1995,  the Company  issued  notes in the  aggregate  principal
amount of $600,000 in connection with the Tisch/Tsai  Restructuring  (as defined
below).  The notes were secured by a pledge by Dr.  Carter of 112,925  shares of
Series C Preferred Stock and 240,756 shares of Common Stock. The notes have been
paid off and the shares are being returned.

Limitation of Liability and Indemnification Matters

     As permitted by the Delaware General Corporation Law ("DGCL"),  the Company
has adopted provisions in its Amended and Restated  Certificate of Incorporation
which  eliminate the personal  liability of its directors to the Company and its
stockholders for monetary damages for breach of the directors'  fiduciary duties
in  certain  circumstances  and which  require  the  Company  to  indemnify  its
directors,  officers and other agents, by Bylaw, agreement, vote of directors or
stockholders or otherwise, to the fullest extent permitted by law.

                                       57
<PAGE>

     The Company has entered into separate  indemnification  agreements with its
directors and its officers.  These agreements  require,  among other things, the
Company to indemnify directors and officers against certain liabilities that may
arise by reason of their  status or service as  directors  and  officers  and to
advance their expenses  incurred as a result of any proceed-ing  against them as
to which they could be indemnified.  The Company  believes that these provisions
in its Amended and Restated Certificate of Incorporation and the indemnification
agreements  are necessary to attract and retain  qualified  persons as directors
and officers. See "Business Legal Proceedings".


                    SECURITY OWNERSHIP OF CERTAIN BENEFICIAL
                              OWNERS AND MANAGEMENT

     The  following  table  sets  forth,  as of May 15,  1996,  the  record  and
beneficial  ownership  of  Common  Stock  of the  Company  by each  officer  and
director,  all officers and  directors as a group,  and each person known to the
Company to own beneficially or of record five percent or more of the outstanding
shares of the Company:

                                        Shares
Officers, Directors and              Beneficially           Percent of Shares
Principal Stockholders                   Owned           Beneficially Owned (1)
- --------------------                  -----------          -------------------
William A. Carter                     4,156,671(2)                 21.1%
Harris Freedman                       1,025,494(3)                  6.2%
E. Gerald Kay                           656,667(4)                  4.0%
Sharon D. Will                          556,667(5)                  3.4%
Cedric C. Philipp                        27,667(6)                    *
Peter W. Rodino III                      25,099(7)                    *
Robert E. Peterson                       10,368(8)                    *
Jerome Belson                           945,000(9)                  5.7%
  Belson Enterprises, Inc.
  495 Broadway
  New York, NY 10012
Josephine Dolhancryk                        820(10)                   *
Richard C. Piani                         18,023(11)                   *
David R Strayer                          14,745                       *
R. Douglas Hulse                         60,000(12)                   *
All directors,                        6,552,221                    29.6%
executive officers
as a group (11 persons)
  *Less than 1%

- -----------
(1)  For purposes of this table,  a person or group of persons is deemed to have
     "beneficial  ownership" of any shares of Common Stock which such person has
     the  right to  acquire  such  shares  within 60 days of May 15,  1996.  For
     purposes of computing the percentage of outstanding  shares of Common Stock
     held by each person or group of persons  named above,  any  security  which
     such person or persons has or have the right to acquire within such date is
     deemed  to be  outstanding  but is not  deemed  to be  outstanding  for the
     purpose of computing the percentage  ownership of any other person.  Except
     as  indicated in the  footnotes  to this table and  pursuant to  applicable
     community property laws, the Company believes based on information supplied
     by such persons,  that the persons named in this table have sole voting and
     investment  power with  respect to all  shares of Common  Stock  which they
     beneficially own.

(2)  Includes  irrevocable  proxies to vote 2,050,000  shares of Common Stock on
     all matters  that come before the  stockholders  of the Company  until such
     time as (i) the  Company  shall have  achieved a market  capitalization  of
     $300,000,000 or greater for at least 20 consecutive  days of trading in the
     public  markets or (ii) the Company  shall have  received a bona fide offer
     for acquisition or merger, the net effect of which, if consummat-ed,  would
     be to  establish  a market  capitalization  of the Company of not less than
     $300,000,000.  This proxy shall be terminated  upon the sale of such shares
     in an arm's  length  public sale.  Also  includes (i) an option to purchase
     73,728  shares of Common  Stock from the  Company at an  exercise  price of
     
                                       58
<PAGE>

     $2.71 per,  (ii)  warrants  to  purchase  960 shares of Common  Stock at an
     exercise  price of $3.50 per share,  (iii) Rule 701  Warrants  to  purchase
     466,667  shares  of Common  Stock at a price of $3.50  per share  (does not
     include 933,333 which are  non-exercisable);  and (iv) warrants to purchase
     500,000 shares of Common Stock at $1.75 per share issued in connection with
     the 1995 Standby Financing Agreement. Dr. Carter has pledged 112,925 shares
     of Series C Preferred and 240,756  shares of Common Stock to the Tisch/Tsai
     Entities as security for the  repayment of the  $660,000  note  executed in
     March 1995. The note has been paid off and the shares are being returned.

(3)  Includes (i) 50,000 shares of Common Stock held by Bridge Ventures, Inc. of
     which Mr.  Freedman is an officer;  (ii) 50,000 shares of Common Stock held
     by SMACS Holding Corp. of which Mr. Freedman is an officer,  (iii) warrants
     to purchase  292,161  shares of Common Stock at an exercise  price of $3.50
     per share  owned of  record by Bridge  Ventures,  Inc.;  (iv)  warrants  to
     purchase  390,000 shares of Common Stock which are exercisable at $1.75 per
     share issued in connection with the 1995 Standby Financing  Agreement owned
     of record by Bridge  Ventures,  Inc.;  and (v) 133,333 Rule 701 Warrants to
     purchase  Common  Stock of the Company at an exercise  price of $3.50 (does
     not include 266,667 which are non-exercisable);  and (iv) 60,000 Units each
     consisting of one Common Stock and one warrant to purchase  Common Stock at
     $3.50.  Bridge  Ventures,  Inc. has given an irrevocable  proxy to vote its
     150,000  shares  to  William  A.  Carter  on the same  terms  as the  proxy
     described in Note 2.

(4)  Includes  Rule 701 Warrants to purchase  6,667 shares of Common Stock at an
     exercise  price of $3.50  per  share  (does not  include  13,333  which are
     non-exercisable)  and  550,000  warrants to  purchase  Common  Stock of the
     Company at an exercises  price of $1.75 per share issued in connection with
     the 1995  Standby  Financing  Agreement.  Mr. Kay has given an  irrevocable
     proxy to vote  100,000  shares of Common  Stock to William A. Carter on the
     same terms as the proxy described in Note 2.

(5)  Includes Rule 701 Warrants to purchase  66,667 shares of Common Stock at an
     exercise  price of $3.50 per  share  (does not  include  133,333  which are
     non-exercisable).  Also  includes  100,000  shares of Common Stock owned of
     record by  Worldwide  Marketing,  a company  for which Ms.  Will  serves as
     President.  Worldwide  Marketing  has given an  irrevoca-ble  proxy to vote
     these shares to William A. Carter on the same terms as the proxy  described
     in Note 2. Also includes  390,000 warrants to pur-chase Common Stock of the
     Company at an exercise price of $1.75.

(6)  Includes  Rule 701  Warrants to purchase  6,667  shares of Common  Stock at
     $3.50  per share  (does  not  include  13,333  which are  non-exercisable),
     options to purchase  20,000  shares of Common  Stock at $3.50 per share and
     1,000 Units owned by the Cedric C. Philipp and Sue Jones  Philipp  Trust of
     which Mr. Philipp and his wife are Trustees.

(7)  Includes  Rule 701  Warrants to purchase  6,667  shares of Common  Stock at
     $3.50 per share (does not include 13,333 which are non-exercisable).

(8)  Consists of options to purchase  Common Stock at an exercise price of $4.34
     per share.  Does not include 50,000 Warrants to purchase Common Stock at an
     exercise price of $3.50 per share effective March 1, 1997.

(9)  Includes 100,000  Bridgeholder  Options to purchase 100,000 Bridge Units at
     $.50 per unit  consisting  of 100,000  shares of Common  Stock and  100,000
     Class A Warrants  exercisable at $4.00 per share. Also includes warrants to
     purchase  550,000 shares of Common Stock at $1.75 per share owned of record
     by Belson  Enterprises,  Inc.,  a company  for which Mr.  Belson  serves as
     President,  issued in connection with the 1995 Standby Financing  Agreement
     and 47,500  Units,  each  consisting  of one share of Common  Stock and one
     warrant.

(10) Consists of options to purchase  820 shares of Common  Stock at an exercise
     price of $3.80.  Does not include 50,000  Warrants to purchase Common Stock
     at an exercise price of $3.50 per share effective March 1, 1997.

(11) Includes  options to purchase  4,608 shares of Common Stock at an exer-cise
     price of $4.34 and 4,608  shares  of  Common  Stock  owned of record by Mr.
     Piani's wife.

(12) Includes 60,000 options to purchase Common Stock at $3.50 per share held by
     The Sage  Group,  of which Mr.  Hulse is an  Executive  Director.  Does not
     include  100,000  options to purchase  Common  Stock at $1.75 per share and
     330,000 options to purchase Common Stock at $3.50 per share.

                                       59
<PAGE>

                       RESALES BY SELLING SECURITYHOLDERS

     This   Prospectus   relates  to  the   proposed   resale  by  the   Selling
Securityholders  of up to 2,770 shares of  outstanding  Common Stock,  2,427,275
shares of Common Stock  issuable  upon  conversion  of the  Preferred  Stock and
890,543  issuable upon exercise of the Warrants.  The following table sets forth
as of September 9, 1996 certain information with respect to the persons for whom
the Company is registering the Shares for sale to the public except as footnoted
below. None of such persons has had a material relationship with or has held any
position or office with the Company or any of its affiliates within three years,
other than as footnoted below (see "Certain Transactions"). The Company will not
receive any of the proceeds from the sale of the Common  Stock.  If the Warrants
are exercised, the Company would receive $4,064,900.

  Names of Selling           Common Stock Beneficially     Common Stock Offered
  Security Holders        Owned Prior to September, 1996    By Beneficial Owner
   ---------------         ----------------------------    --------------------
Seymour Cohn(1)                       119,807                     119,807
Myron Cherry(2)                        12,770                      12,770
Charles Moore(3)                       43,304                      43,304
Maurice Schlang(4)                    138,432                     138,432
The Olmstead Group, LLC(5)            240,000                     240,000
Fred Craves(5)                       120,000                      120,000
Francis F. Bodkin, Jr.(5)             120,000                     120,000
GFL Advantage Fund Ltd.(6)          2,527,275                   2,527,275

- -----------
(1)  Represents shares of Common Stock underlying a Warrant  exercisable  during
     the four year period  commencing  November 2, 1995, at an exercise price of
     $10.85 per share.

(2)  Represents  (i) 10,000  shares of Common Stock  underlying  two Warrants of
     which 5,000 shares are exercisable at any time commencing  November 1, 1994
     and expiring December 31, 1998, at an exercise price of $3.50 per share and
     5,000 shares exercisable at any time commencing March 20, 1995 and expiring
     March 31,  1999,  at an exercise  price of $3.50 per share;  and (ii) 2,770
     share of Common Stock.

(3)  Represents  (i)  40,000  shares of Common  Stock  underlying  two  Warrants
     exercisable during the five year period commencing  November 2, 1995, at an
     exercise  price of $2.00 per share;  and (ii) 2,304  shares of Common Stock
     underlying a stock option exercisable during the ten year period commencing
     April 16, 1996, at an exercise price of $4.34 per share.

(4)  Represents  (i)  120,000  shares  of  Common  Stock  underlying  a  Warrant
     exercisable during the five year period commencing  November 2, 1995, at an
     exercise  price of $2.00 per share;  and (ii) 18,432 shares of Common Stock
     underlying a stock option exercisable during the ten year period commencing
     January 25, 1995, at an exercise price of $4.34 per share.

(5)  Represents  Common Stock underlying  Warrants  exercisable  during the five
     year  period  commencing  July 3,  1996 at an  exercise  price of $4.00 per
     share.

(6)  Represents  (i) 2,427,275  shares of Common Stock  underlying the Preferred
     Stock;  and (ii)  100,000  shares  of  Common  Stock  underlying  a Warrant
     exercisable during the period commencing July 3, 1996 and expiring November
     2,  2000 at an  exercise  price of $4.00 per  share.  The  Preferred  Stock
     Certificate  of  Designations  and the Warrant  provides that GFL Advantage
     Fund Limited may not convert its Preferred Stock or exercise its Warrant at
     any time to acquire a number of shares of Common Stock in excess of 4.9% of
     the Company's outstanding Common Stock.

     The Selling  Securityholders  may effect the sale of their shares from time
to  time  in  transactions   (which  may  include  block  transactions)  in  the
over-the-counter  market,  in  negotiated  transactions,  through the writing of
options on the Common Stock,  or a combination of such methods of sale, at fixed
prices which may be changed, at market prices prevailing at the time of sale, or
at negotiated prices.

     The Company is not aware of any  agreements,  undertakings  or arrangements
with any Underwriters or  broker-dealers  regarding the sale of their securities
in the United  States,  nor to the Company's  knowledge is the sale of shares on
behalf  of  the  Selling  Securityholders  in the  United  States.  The  Selling
Securityholders   may  effect  such  transactions  by  selling  the  shares,  as
applicable, directly to purchasers or to or through broker-dealers which may act
as agents or principals.  Such  broker-dealers  may receive  compensation in the
form of discounts,  concessions or commissions from the Selling Securityholders,
and/or  the  purchasers  of  their  shares,   as  applicable,   for  which  such

                                       60
<PAGE>

broker-dealers  may act as agents or to whom  they  sell as  principal,  or both
(which  compensation  as to a  particular  broker-dealer  might be in  excess of
customary commissions).  The Selling Securityholders and any broker-dealers that
act in  connection  with  the  sale  of  their  shares  might  be  deemed  to be
"underwriters" within the meaning of Section 2(11) of the Securities Act.

     The Company has  notified  the Selling  Securityholders  of the  prospectus
delivery  requirements  for sales made pursuant to this  Prospectus and that, if
there are material changes to the stated plan of distribution,  a post-effective
amendment with current information would need to be filed before offers are made
and no sales could occur until such amendment is declared effective. The Company
has agreed with one Selling  Securityholder to promptly  prepare,  file with the
Commission and obtain effectiveness of any such post-effective amendment.

                                       61
<PAGE>

                 CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

     In August  1996,  the  Company  entered  into an  agreement  with  Shamrock
Partners,  Ltd. ("Shamrock"),  an investment banking firm. Shamrock will provide
financial  consulting  services and advice for a term of one year.  In exchange,
the Company will grant  Shamrock an option to purchase  600,000  share of Common
Stock during the five year period beginning August 15, 1996 at an exercise price
of $2.50 per share.

     In July 1996, the Company  consummated a private  offering of its Preferred
Stock pursuant to Rule 506 of Regulation as promulgated by the Commission  under
the Securities Act. The Company issued 6,000 shares of Preferred Stock, $.01 par
value at a purchase  price of $1,000 per share.  In  connection  therewith,  the
Company granted  480,000  Warrants to purchase Common Stock at an exercise price
$4.00 per share to The Olmstead  Group,  Fred Craves and Francis F. Bodkin,  Jr.
for their efforts in placing the Preferred Stock.

     In May 1996, the Company  entered into two additional  agreements  with The
Sage Group.  Under the first  agreement,  R.  Douglas  Hulse will serve as Chief
Operating Officer of the Company. In exchange,  The Sage Group will receive from
the Company;  (i) a monthly retainer of $10,000 starting June 1, 1996, replacing
the  $5,000  monthly  retainer  provided  in the June 1995  agreement;  and (ii)
options to purchase  250,000 shares of the Company's Common Stock at an exercise
price of $3.50 per share.  Under the second agreement,  The Sage Group agreed to
introduce  the Company to and assist the Company in  negotiations  with  certain
foreign distribution partners. In exchange, The Sage Group will receive from the
Company;  (i) a bonus  payment of  $500,000 if total sales of Ampligen in Canada
and Europe  exceed $10 million for 1996 and 1997  combined;  and (ii) options to
purchase 140,000 shares of the Company's Common Stock at an exercise price $3.50
per share.  R. Douglas  Hulse,  Chief  Operating  Officer of the Company,  is an
Executive Director of the Sage Group.

     In March 1996,  William A. Carter assigned and transferred  50,000 warrants
to purchase  Common Stock, at $1.75 per share, to three outside parties that had
loaned the Company money in 1995.  These loans were repaid in 1995. The assigned
warrants are subject to a lockup agreement.

     In March 1996, Harris Freedman assigned and transferred 160,000 warrants to
purchase  Common  Stock at $1.75 per share to Sharon  Will,  an  officer  of the
Company  and two other  shareholders.  The  assigned  warrants  are subject to a
lockup agreement.

     In March  1996,  the  Compensation  Committee  of the  Board  of  Directors
approved a grant of 250,000  warrants  to purchase  common  stock at an exercise
price  of  $3.50  per  share to  Michael  C.  Burrows.  This  grant  was made in
accordance with a Letter  Agreement dated January 15, 1996, in which Mr. Burrows
agreed to provide consulting services to the Company for twenty four months. Mr.
Burrows served as Director of the Company in past years.

     In March 1996 the Compensation Committee of the Board of Directors approved
grants of 50,000 warrants to purchase common stock at an exercise price of $3.50
per share to each of Robert E. Peterson, CFO and Josephine Dolhancryk, Assistant
Secretary of the Company.  Such warrants are not exercisable for a period of one
year from issuance.

     In March 1995, the Company instituted a declaratory judgment action against
a February  noteholder,  Seymour  Cohn, of a $5,000,000  convertible  note and a
secured  defendant in United States  District Court for the Eastern  District of
Pennsylvania  to declare  as void,  set aside,  and  cancel  the  February  1992
convertible note between the Company and Mr. Cohn (the "Note"). In addition, Mr.
Cohn instituted suit against the Company on the Note in the Circuit Court of the
15th Judicial District in and for Palm Beach County,  Florida,  seeking judgment
on the Note, plus attorney fees, costs and expenses; in August 1995, this action
was stayed by the Florida Court pending the outcome of the Pennsylvania  action.
Mr. Cohn also filed a motion for a preliminary  injunction  in the  Pennsylvania
court to enjoin the Company from disbursing the proceeds of a public offering in
the amount of $5.8 million, which motion was granted November, 1995. On February
15, 1996,  the Company  reached an  agreement  to settle this matter.  Terms and
conditions of the settlement  include payment of $6,450,000 to Mr. Cohn to cover
the unpaid  balance Note  balance,  legal  expenses and the retention of certain
warrants granted prior to the lawsuit. The funds under this settlement were paid
on March 21, 1996.  Mutual releases were executed which completed the settlement
of the litigation.

     In January 1996, the Company  engaged the Research  Works,  Inc. to produce
four  research  reports with respect to the  securities of the Company over a 13
month period. In exchange for this service,  the Company granted 60,000 warrants
to the Research Works, Inc. exercisable at $4.00 per share.

                                       62
<PAGE>

     In January 1996, the Company entered into a one year  consulting  agreement
with   Millenium   International   Communications,   Ltd.   ("Millenium").   The
consideration for such services is $120,000, to be paid by the Company in either
monthly payments or balloon  payments,  in the Company's  discretion.  Millenium
shall  consult  with and render  advice to the Company  specifically  concerning
strategic planning, public relations and other related matters. The President of
Millenium,  David C. Drescher is related to Steve Drescher, a former director of
the Company.

     In  December  1995,  the  Company  retained  the law firm of  Akin,  Gump,,
Strauss,  Hauer & Feld, LLP (the "Akin Group") to provide general legal counsel,
advice and representation.  Initially, the Akin Group will represent the Company
in matters pertaining to the Food and Drug Administration ("FDA"). The agreement
includes  incentive  payments  for  obtaining  FDA  approval of Ampligen for HIV
Disease treatment.

     In November 1995, the Company sold 5,313,000 Units of securities through an
initial public offering. Each Unit consists of one share of Common Stock and one
Class A Warrant.

     In August 1995, in connection with the settlement of a lawsuit brought by a
former  employee of the Company  against the Company and David  Fries,  a former
director of the Company,  the Company,  Dr. Fries,  the Canaan  Entities and Dr.
William A. Carter,  President,  Chairman and CEO of the Company, entered into an
agreement  pursuant to which the Company has agreed to  reimburse  Dr. Fries for
expenses in the amount of $50,000  incurred in connection with such  litigation.
As part of such  agreement,  the  parties  agreed to mutual  releases of certain
claims for  expenses  and damages  arising out of the  litigation  or arising in
connection with Dr. Fries' service as a director of the Company.  The payment of
$50,000 to Dr. Fries is evidenced by an  interest-free  promissory note pursuant
to which the final payment is due on or before  November 15, 1995.  The note was
assigned to the Canaan Entities.

     In June 1995,  the Company  entered into an  agreement  with The Sage Group
pursuant  to which The Sage Group has  agreed to  introduce  the  Company to and
assist  the  Company  in  negotiations  with  certain  prospective  distribution
partners listed in the agreement.  In exchange, The Sage Group will receive from
the Company:  (i) a monthly retainer of $5,000 which began accruing July 1, 1995
and (ii) at The Sage Group's  option,  a percentage  of the  proceeds,  up to an
aggregate of $150,000,  from the Company's first  distribution  agreement with a
partner listed in the agreement or the sum of $125,000 from such  agreement.  In
connection  with this  agreement,  the Company will also issue to The Sage Group
options to purchase  100,000 shares of the Company's Common Stock at an exercise
price of $1.75 per share.  R.  Douglas  Hulse,  Chief  Operating  Officer of the
Company, is an Executive Director of The Sage Group.

     In May 1995, William A. Carter,  M.D.,  President,  Chairman and CEO of the
Company,  Bridge  Ventures,  Sharon  Will,  a Vice  President  of  the  Company,
Associated  Funding  Services,  Inc.,  Jerome  Belson,  a director of one of the
Company's subsidiaries and a principal shareholder and E. Gerald Kay, a director
of the Company, entered into a 1995 Standby Financing Agreement with the Company
pursuant  to which they are  collectively  obligated  to invest  during  1995 an
aggregate  of  $5,500,000  in the  Company in the event the Company is unable to
secure alternative financing and the Board of Directors determines that the sale
of securities  to such persons is  advisable.  In exchange for entering into the
1995  Standby  Financing  Agreement,  the Company  issued to each of the parties
ten-year  warrants to purchase 50,000 shares of the Company's Common Stock at an
exercise  price of $1.75  per  share  for each  $100,000  of  standby  financing
obligation assumed by the party,  resulting in warrants to purchase an aggregate
of 2,750,000  shares of Common Stock.  In September  1995, the parties agreed to
extend their  obligations  under the 1995 Standby  Financing  Agreement  through
December 31, 1996.  Harris  Freedman,  a Vice President of the Company,  and his
wife are officers of Bridge Ventures.  Gerald Brauser is President of Associated
Funding Services, Inc.

     In June 1995, the Board of Directors of BioAegean Corp, a subsidiary of the
Company, issued an aggregate of 1,200,000 BioAegean Options at an exercise price
of $1.00 per share to its officers and directors, including certain officers and
directors  of the Company.  In  consideration  for the  BioAegean  Options,  the
recipients agreed to serve BioAegean's needs for at least 24 months unless fully
incapacitated.  William A. Carter, M.D., Chairman, President and Chief Executive
Officer of the  Company,  serves as  Chairman,  Chief  Executive  Officer  and a
Director of BioAegean and received 300,000  BioAegean  Options.  Peter W. Rodino
III,  a  director  and  Secretary  of  the  Company,  serves  as  Vice-Chairman,
Secretary,  Corporate  Counsel and a director of BioAegean and received  150,000
BioAegean  Options.  R. Douglas Hulse serves as Chief  Operating  Officer of the
Company and BioAegean and received  50,000  BioAegean  Options.  Robert Peterson
serves as Chief Financial Officer of both the Company and BioAegean and received
50,000 BioAegean Options.  Sharon Will, Vice President of Investor Relations and

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<PAGE>

Corporate  Communications for the Company, serves as Vice President of Marketing
for BioAegean and received 150,000 BioAegean Options.  Harris Freedman serves as
Vice  President for  Strategic  Alliances for both the Company and BioAegean and
received 150,000 BioAegean Options. Richard C. Piani, a director of the Company,
serves as a director  and the  Advisor for  European  Affairs of  BioAegean  and
received 50,000 BioAegean  Options.  E. Gerald Kay serves as a director for both
the Company and BioAegean and received  50,000  BioAegean  Options.  BioAegean's
remaining  director,  Jerome  Belson,  a principal  stockholder  of the Company,
received 50,000 BioAegean Options.

     In March 1995, the Company  issued the Original  Brauser Note, to Gerald A.
Brauser in the  principal  amount of $200,000.  The  Original  Brauser Note also
provided for the issuance of warrants to purchase 50,000 shares of the Company's
Common  Stock at $1.75 per share.  In May 1995,  the  Company  restructured  the
Original  Brauser  Note and issued the New  Brauser  Note to Mr.  Brauser in the
amount  of  $100,000  along  with  warrants  to  purchase  25,000  shares of the
Company's  Common Stock at $1.75 per share.  As part of the  restructuring,  Mr.
Brauser  agreed to (i) purchase  100,000  shares of Common Stock with $50,000 of
the Original  Brauser Note and (ii) apply  $50,000 of the Original  Brauser Note
towards a Bridge Loan in connection with the Bridge  Financing.  The New Brauser
Note of $100,000 and the $50,000  Bridge Loan have been paid off. In  connection
with both the Original  Brauser Note and the New Brauser Note,  Bridge  Ventures
agreed to permit the Company to  collateralize  these  notes with the  Company's
patent estate,  which collateral had previously been granted to Bridge Ventures.
Bridge  Ventures  further  guaranteed  the  Original  Brauser  Note with certain
publicly  traded common stock,  which  guarantee was released by Mr.  Brauser in
connection  with the  restructuring.  Harris  Freedman,  a Vice President of the
Company, and his wife are both officers of Bridge Ventures.

     In March and April  1995,  in  connection  with the Bridge  Financing,  the
Company issued Bridge Notes to certain lenders in the aggregate principal amount
of  $1,500,000,  including  a Bridge  Note in the amount of  $250,000 to Stephen
Drescher  and a  Bridge  Note  in the  amount  of  $150,000  to  Jerome  Belson.
Additionally,  in  connection  with the Bridge  Loans,  the  Company  has issued
options to purchase 166,665 Bridge Units at $.50 per Bridge Unit to Mr. Drescher
and options to purchase  100,000  Bridge Units at $.50 per Bridge Unit to Jerome
Belson.  In July 1995, Mr.  Drescher  assigned the $250,000  Bridge Note and his
options to  purchase  166,665  Bridge  Units to  certain  other  investors.  Mr.
Drescher  is a former  director  of the  Company  and  presently  serves  as the
Director of Corporate Finance at Monroe Parker, one of the Underwriters.  Jerome
Belson is a principal shareholder and director of BioAegean, a subsidiary of the
Company.

     In March 1995,  the Company  received  interest-free  loans from William A.
Carter and Harris Freedman in the amounts of $35,000 and $12,000,  respectively.
In March 1995, the Company  repaid the loan from Dr. Carter.  In April 1995, the
Company repaid the loan from Mr. Freedman.

     In December 1992 and February  1993,  the Company  issued to the Tisch/Tsai
Entities,  in a private placement,  promissory notes in the aggregate  principal
amount  of  $2,400,000  due on April 30,  1994,  and  warrants  to  purchase  an
aggregate of 36,864  shares of the  Company's  Common Stock or 40,000  shares of
Series C Preferred  Stock at an  exercise  price of the (i) $13.02 or $12.00 per
share,  respectively  or (ii) the per share price of Common Stock in the initial
public  offering.  The warrants  expire on December  31,  1997.  One-half of the
principal amount of the notes and one-half of the warrants were purchased by FLF
Associates.  James S. Tisch, a former director of the Company, is a principal of
FLF  Associates.  The  remaining  half of the  principal  amount of the note and
one-half of the warrants  were  purchased by Gerald Tsai,  Jr. and Lincoln Trust
Company,  Custodian  FBO Gerald Tsai,  Jr. Mr. Tsai is a former  director of the
Company. Interest on the notes is payable quarterly at an annual rate of 12% (6%
prior to May 1, 1993).

     In February 1995, the Company entered into a settlement  agreement with the
Tisch/Tsai   Entities  to  restructure  the  December  1992  and  February  1993
promissory  notes in the aggregate  principal  amount of  $2,400,000  and settle
certain  threatened  claims made by the Tisch/Tsai  Entities against the Company
(the "Tisch/Tsai  Restructuring").  This debt restructuring consisted of (i) the
repayment  by the  Company of  $1,200,000  in  principal,  (ii) the  issuance of
replacement  notes  in  the  aggregate  principal  amount  of  $600,000  to  the
Tisch/Tsai  Entities  which  notes are due on the  earlier  of the  closing of a
public  offering or May 28, 1996 and bear  interest at the rate of 8% per annum,
which  interest is payable in quarterly  installments  from an interest  reserve
established  by the Company,  (iii) the conversion of $600,000 of principal into
172,414 shares of Series C Preferred Stock at the rate of $3.48 per share,  (iv)
the amendment and restatement of certain  warrants issued in connection with the
original  notes in order to  increase  the  number of  shares of stock  issuable
thereunder  by 64,000  shares to provide  for  warrants  to  purchase a total of
144,000  shares of Common Stock at an exercise  price of $2.00 per share,  which
warrants are  exercisable  until  December 31, 1997,  and (v) the release by all

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<PAGE>

parties of any claims.  The  replacement  notes were  secured by a pledge by Dr.
William A.  Carter,  President,  Chief  Executive  Officer  and  Chairman of the
Company,  of 112,925  shares of Series C Preferred  Stock and 240,756  shares of
Common Stock.  In March,  1996 the notes were repaid and the shares of stock are
being returned.

     In November 1994,  the Company  restructured a $100,000 note issued in June
1993 to Myron Cherry (the "Cherry Note"),  a stockholder,  pursuant to which the
repayment  date of the  principal  amount of the Cherry Note was extended to the
closing date of the Company's initial public offering and the accrued but unpaid
interest subsequent to September 30, 1993 was converted into Common Stock of the
Company at a price of $5.43 per share.  Pursuant  to the  restructuring,  in the
event that the Company's  initial public  offering was not completed by February
28, 1995, the principal amount would be repaid by the Company or Bridge Ventures
Inc. by March 6, 1995.  In  addition,  the Company  issued to Mr.  Cherry  5,000
immediately  exercisable  warrants with an exercise price of $3.50 per share and
Bridge  Ventures  agreed that the unpaid  principal  on the Cherry Note would be
collateralized  by  the  Company's  patents  on the  same  terms  as the  Bridge
Financing arranged by Bridge Ventures. In March 1995, the Company and Mr. Cherry
agreed to extend the maturity of the promissory note from March 1, 1995 to March
31, 1995. During this extended period, the Company agreed to pay 8% interest and
grant Mr. Cherry a warrant to purchase 5,000 shares of Common Stock  exercisable
at $3.50.  The Company  further  agreed to either  register all of Mr.  Cherry's
2,770  shares of Common  Stock and 10,000  warrants to purchase  Common Stock in
connection  with this  Public  Offering  or  reduce  the  exercise  price of Mr.
Cherry's  warrants to $1.75 per share.  Because  Mr.  Cherry has not advised the
Company of his  election,  the Company has  reduced  the  exercise  price of his
warrants to $1.75 per share. As of July, 1995, the Company has repaid the entire
principal amount of the Note,  including  accrued interest.  Harris Freedman,  a
Vice President of the Company, and his wife are officers of Bridge Ventures.

     In October and  November  1994,  the Company  granted  Rule 701 Warrants to
purchase  20,000  shares of Common  Stock at $3.50 per share to E.  Gerald  Kay,
Cedric C.  Philipp and Peter  Rodino III,  directors  of the Company and Maryann
Charlap  Azzato,  a former  director of the Company.  In  addition,  the Company
granted the  following  Rule 701 Warrants to purchase  shares of Common Stock at
$3.50 per share:  1,400,000  warrants to William A. Carter;  200,000 warrants to
Sharon Will, Vice President of Investor Relations and Corporate  Communications;
and 400,000 warrants to Harris Freedman, Vice President for Strategic Alliances.

     From July 1994 to November 1994, the Company  completed a private placement
in which  it sold  2,050,000  shares  of  Common  Stock  to  certain  accredited
investors for an aggregate  consideration  of $1,025,000 (the "1994 Common Stock
Financing").   In  connection  with  the  private  placement,   Bridge  Ventures
introduced a number of investors  and lenders to the Company.  Harris  Freedman,
Vice President of the Company, and his wife are officers of Bridge Ventures.  In
conjunction  with the  1994  Common  Stock  Financing,  the  Company  agreed  to
collateralize  certain of its patents until the earlier of the  effectiveness of
the initial  public  offering or the  consummation  of  corporate  alliances  or
licensing  arrangement which provide  sufficient  operating capital and clinical
development  support to the  Company.  Pursuant  to the  agreement  with  Bridge
Ventures in connection with the 1994 Common Stock  Financing,  Messrs.  Philipp,
Rodino and Kay were elected to the Board of  Directors.  Purchasers of 1,950,000
of the shares of Common Stock issued pursuant to the 1994 Common Stock Financing
executed  irrevocable proxies naming William A. Carter, the Company's President,
Chief Executive  Officer and Chairman,  as proxy,  with full power to vote their
shares on all matters to be voted on by the  stockholders  of the Company  until
the  achievement by the Company of a market  capitalization  of  $300,000,000 or
greater under certain circumstances or the receipt by the Company of a bona fide
offer for acquisition or merger, the net effect of which, if consummated,  would
be to establish a market capitalization of at least $300,000,000.

     In October 1994, in connection  with the 1994 Common Stock  Financing,  the
Company  sold  50,000  shares  of  Common  Stock at a price of $.50 per share to
Stephen J. Drescher,  a former director of the Company,  80,000 shares of Common
Stock to the Belfort Family Trust, of which Mr. Drescher serves as Trustee, at a
price of $.50 per share and 50,000 shares of Common Stock at a price of $.50 per
share to Jerome  Belson,  a director of  BioAegean.  Mr.  Drescher also received
300,000 warrants in connection with general consulting services. In addition, in
October 1994,  the Company  received a certain loan in the  aggregate  principal
amount of $150,000 from the Belfort  Family Trust.  In March 1995,  the loan was
repaid  without  interest from the proceeds  from the Bridge  Loans.  In October
1995,  the  Belfort  Family  Trust sold 80,000  shares of Common  Stock to Carol
Schiller at a price of $2.00 per share.

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<PAGE>

     In October  1994,  the Company  entered  into an agreement  with  Bioclones
Proprietary  Limited  ("Bioclones"),   a  biopharmaceutical   company  which  is
associated with The South African Breweries Limited ("SAB").  In connection with
the  execution  of SAB  Agreement,  the Company  granted  Cedric C.  Philipp,  a
Director of the Company,  an option to purchase 20,000 shares of Common Stock at
$3.50 per share. In addition, in October 1994, the Board of Directors granted to
Mr.  Philipp,  a director of the  Company  and Special  Advisor to the Board for
International  Marketing,  the right to receive 3% of the gross  proceeds of any
licensing fees and prepaid royalties received by the Company pursuant to the SAB
Agreement  and a fee of .75% of gross  proceeds in the event that  SAB/Bioclones
makes a tender  offer  for all or  substantially  all of the  Company's  assets,
including a merger, acquisition or related transaction. In addition, the Company
further agreed to provide a monthly retainer of $2,000 to Mr. Philip in exchange
for  consulting  services and  remuneration  for corporate  alliances  which are
principally introduced by Mr. Philipp. Mr. Philipp has been paid $90,000 to date
in connection with these arrangements.

     In September  1994,  Maryann  Charlap  Azzato,  formerly Vice  President of
Investor Relations and Corporate Communications and the former Vice Chairman and
director  of the  Company,  entered  into  an  agreement  with  Lloyd  DeVos,  a
stockholder,  former  director and holder of a note in the  principal  amount of
$100,000  (the  "DeVos  Note") in order to settle a lawsuit  filed  against  the
Company and William A. Carter by Mr. DeVos in the United States  District  Court
for the Southern  District of New York alleging  breach of contract,  conversion
and certain  violations of the federal  securities  laws in connection  with the
issuance of the DeVos Note. Pursuant to the settlement agreement,  principal and
interest on the DeVos Note were repaid by Ms. Azzato as well as certain expenses
incurred by Mr.  DeVos in the  approximate  amount of $2,600 and 1,536 shares of
Common  Stock of the Company  were  transferred  to Mr.  DeVos by Ms.  Azzato in
exchange for the assignment to Ms. Azzato by Mr. DeVos of the right to repayment
by the Company of the DeVos Note and warrants to purchase  1,667 share of Series
C Preferred  Stock.  In addition,  certain  options to purchase  6,912 shares of
Common Stock of the Company previously issued to Mr. DeVos were delivered to Mr.
DeVos. In exchange for the above  agreement,  Mr. DeVos, the Company and William
A. Carter  executed  mutual  releases of all claims and Mr. DeVos  dismissed the
suit.

     In September 1994, the Company incorporated three wholly-owned subsidiaries
BioPro Corp.  ("BioPro"),  Core BioTech,  Corp.  ("Core  BioTech") and BioAegean
Corp. in Delaware.  In September 1994, the Company granted  exclusive  worldwide
licenses and/or sublicenses to certain of its patents and assigned certain other
patents  to BioPro  (the  "BioPro  License"),  Core  BioTech  (the  "CoreBiotech
License") and BioAegean (the "BioAegean  License").  Bridge Ventures,  which has
rights  in the  Company's  patents  pursuant  to the  collateralization  of such
patents in connection  with the 1994 Common Stock  Financing,  agreed to release
its rights in the  licensed  or  assigned  patents.  Harris  Freedman,  the Vice
President for Strategic  Alliances for the Company and  BioAegean,  and his wife
are officers of Bridge Ventures.

     In May 1994, the Company  entered into an agreement to borrow $100,000 from
Bridge  Ventures for 60 days in exchange for warrants to purchase  92,160 shares
of Common  Stock at $3.50 per  share.  In August  1994,  the  $100,000  loan was
converted to 200,000  shares of Common  Stock and  warrants to purchase  200,000
shares of Common Stock at an exercise price of $3.50 per share.  Bridge Ventures
transferred  150,000 of its shares of Common  Stock to Gerald Kay, a director of
the Company. In addition,  Bridge Ventures received a $50,000 consulting fee for
general business and financial consulting services rendered from January 1994 to
July 1994, which it converted into 100,000 shares of Common Stock as part of the
1994 Common Stock Financing.  Harris Freedman, the Company's Vice President, and
his wife are officers of Bridge Ventures.  Pursuant to the agreement with Bridge
Ventures,  Messrs.  Kay,  Philipp  and  Rodino  were  elected  to the  Board  of
Directors.  In November 1994, each of Bridge Ventures and Gerald Kay sold 50,000
shares of  Common  Stock at a price of $.50 per  share to  Worldwide  Marketing.
Sharon Will, an officer of the Company, is President of Worldwide Marketing.

     In April  1994,  William  A.  Carter,  the  Company's  Chairman  and  Chief
Executive Officer,  purchased 20,000 shares of Series C Preferred Stock at $5.00
per share.  Also Maryann  Charlap  Azzato  purchased  30,000  shares of Series C
Preferred  Stock at $5.00 per share and agreed to purchase an additional  10,000
shares at $5.00 per share.

     In May 1994,  Maryann Charlap Azzato  guaranteed  payment of two promissory
notes in the  aggregate  amount of $76,000  payable by the Company  representing
payments due in connection with the Temple  Agreement (the "Temple  Notes").  In
return for the guarantee,  the Company assigned all rights,  patents and related
technology  in the Company's  Oragen and Diagen  products to Ms.  Azzato,  which
rights will revert to the Company upon  repayment of the principal on the Temple

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Notes, 12% interest, and Ms. Azzato's fees and expenses which are expected to be
paid from the  proceeds of this Public  Offering.  The Company  also  received a
right of first  refusal with respect to the sale or  assignment by Ms. Azzato of
this technology.

     In January  1994,  William A.  Carter,  the  Company's  Chairman  and Chief
Executive Officer,  sold an aggregate of 122,880 shares of Common Stock at $3.26
per  share  for an  aggregate  price  of  $400,000  to  Michael  Dubilier,  Keys
Foundation,  Canaan  Venture  Limited  Partnership  ("Canaan  Venture"),  Canaan
Venture Offshore Limited Partnership,  C.V. ("Canaan Offshore"), James Tisch and
an  unaffiliated  individual.  Using  the  proceeds  of this  sale,  Dr.  Carter
purchased  80,000 shares of Series C Preferred Stock at $5.00 per share from the
Company. In addition,  Maryann Charlap Azzato purchased 3,600 shares of Series C
Preferred  Stock at $5.00 for an aggregate  price of $18,000,  representing  her
remaining commitment under the 1993 Standby Financing Agreement.

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<PAGE>

                            DESCRIPTION OF SECURITIES

     The Company is authorized to issue up to 50,000,000 shares of Common Stock,
$.001 par value per share,  and 5,000,000  shares of Preferred  Stock,  $.01 par
value per share.

Common Stock

     As  of  July  10,  1996,  there  were  9,470,675  shares  of  Common  Stock
outstanding  and  subscribed  held of record by 331  stockholders.  In addition,
there were 6,110,917  Units  outstanding,  each Unit  consisting of one share of
Common Stock and one Class A Redeemable Warrant. The holders of Common Stock are
entitled  to one vote per share on all  matters to be voted on by  stockholders,
and  stockholders  have  no  rights  to  cumulative  votes  in the  election  of
directors. Subject to prior dividend rights and preferences of holders of shares
of Preferred Stock, if any, holders of Common Stock are entitled to receive such
dividends  as may be  declared  by the Board of  Directors  from  funds  legally
available therefor.  Upon liquidation or dissolution of the Company,  subject to
prior  liquidation  rights of holders of Preferred  Stock, if any, the assets of
the Company  available for  distribution  to  stockholders  will be  distributed
ratably among the holders of Common  Stock.  The holders of Common Stock have no
preemptive  or  other  subscription  rights  and  there  are  no  conversion  or
redemption or sinking fund  provisions  with respect to such shares.  All of the
outstanding  shares of Common  Stock are fully  paid and  nonassessable  and the
shares of Common Stock sold by the Company in this  offering  will be fully paid
and nonassessable.

Preferred Stock

     As of July 10, 1996,  there were 6,000  shares of Series D Preferred  Stock
which were issued and subscribed.  These Preferred  shares are convertible  into
Common Stock.

     The Board of Directors are  authorized,  without  further action or vote of
the  stockholders,  to issue up to 4,400,000 shares of Preferred Stock in one or
more series and to fix the rights,  preferences,  privileges  and  restrictions,
including the dividend  rights,  conversion  rights,  voting rights,  rights and
terms of redemption, redemption price or prices, liquidation preferences and the
number of shares constituting any series or the designations of such series. The
Company has no present plans to issue any shares of Preferred Stock. Issuance of
Preferred Stock, which may be accomplished  through a public offering, a private
placement or otherwise  may dilute the voting power of holders of Common  Stock,
may render  more  difficult  the  removal of  current  management,  even if such
removal may be in the  stockholders'  best interest,  and may have the effect of
delaying, deferring or preventing a change in control of the Company.

Warrants

     In  connection  with  various debt  financings  and other  agreements,  the
Company has issued warrants to acquire an aggregate of up to 6,013,630 shares of
the Company's  Common Stock at a weighted  average  exercise  price of $3.15 per
share.  In  addition,  the  Company  issued Rule 701  Warrants to the  Company's
directors  and certain  officers in October and  November  1994,  to purchase an
aggregate  of  2,080,000  shares  of  Common  Stock  at  $3.50  per  share.  See
"Management's  Discussion  and  Analysis of Financial  Condition  and Results of
Operations" and "Certain  Transactions."  All of these warrants,  except for (i)
the Rule 701 Warrants which vest in 1/3  increments  over 36 months and (ii) the
100,000  warrants  which  may be issued to The Sage  Group  which  vest upon the
occurrence of certain conditions, are currently exercisable by the holders.

Class A Redeemable Warrants

     The Class A Redeemable  Warrants ("Class A Warrants"),  totaling 6,313,000,
(including the Class A Warrants  included in the Bridge Units which are issuable
upon exercise of the Bridgeholder Options), are issued pursuant to an agreement,
dated  November  2, 1995 (the  "Warrant  Agreement"),  between  the  Company and
Continental  Stock  Transfer  and  Trust  Company  (the  "Warrant  Agent").  The
following  discussion of certain terms and provisions of the Class A Warrants is
qualified in its entirety by reference to the detailed provisions of the Warrant
Agreement.

     Each  Class A  Warrant  represents  the right of the  registered  holder to
purchase one share of Common Stock at an exercise price equal to $4.00,  subject
to adjustment (the "Purchase  Price").  The Class A Warrants will be entitled to
the benefit of  adjustments in the Purchase Price and in the number of shares of
Common Stock and/or other  securities  deliverable  upon the exercise thereof in

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the event of a stock dividend,  stock split,  reclassification,  reorganization,
consolidation,  merger or the  issuance  of Common  Stock or options to purchase
Common Stock at a price below the Purchase Price then in effect. The Company has
the right to reduce  the  Purchase  Price or  increase  the  number of shares of
Common Stock issuable upon the exercise of the Class A Warrants.

     Unless  previously  redeemed,  the Class A Warrants may be exercised at any
time commencing  November 2, 1996 and prior to the close of business on November
2, 2000 (the "Expiration  Date").  On and after the Expiration Date, the Class A
Warrants  become  wholly  void and of no value.  The Company  may,  upon 30 days
written notice to all holders of the Class A Warrants, reduce the exercise price
or extend the  Expiration  Date of all  outstanding  Warrants for such increased
period of time as it may determine. The Class A Warrants may be exercised at the
office of the Warrant Agent.

     The Company has the right at any time after  November 2, 1997 to redeem the
Class A Warrants at a price of $.05 each, by written notice mailed 30 days prior
to the  redemption  date to each  Class A Warrant  holder at his  address  as it
appears  on the books of the  Warrant  Agent.  Such  notice  shall only be given
within 10 days following any period of 20 consecutive  trading days during which
the high  closing bid price of the shares of Common Stock (if then traded on the
Nasdaq  or  on  a  national  securities  exchange)  exceeds  $9.00,  subject  to
adjustments  for stock  dividends,  stock  splits  and the like.  If the Class A
Warrants are called for redemption, they must be exercised prior to the close of
business  on the date prior to the date of any such  redemption  or the right to
purchase the applicable shares of Common Stock will lapse.

     No  holder,  as such,  of Class A  Warrants  shall be  entitled  to vote or
receive  dividends  or be deemed  the  holder of shares of Common  Stock for any
purpose  whatsoever until such Class A Warrants have been duly exercised and the
Purchase Price has been paid in full.

     If required,  the Company will file a new  registration  statement with the
Commission with respect to the securities  underlying the Class A Warrants prior
to the exercise of the Class A Warrants and deliver a prospectus with respect to
such securities to all Class A Warrant  holders as required by Section  10(a)(3)
of the  Securities  Act. See "Risk  Factors--Current  Prospectus and State `Blue
Sky' Registration Required to Exercise the Redeemable Warrants."

Units

     Pursuant to the IPO in November  1995,  the Company  registered  and issued
5,313,000 Units. Each Unit consists of one share of Common Stock and one Class A
Warrant. As of July 10, 1996 there were 6,110,917 Units outstanding. On July 12,
1996, the Units were de-coupled into their component  parts. On August 19, 1996,
the Company voluntarily delisted the Units. The Company's Common Stock and Class
A Warrants are traded publicly.

Bridge Units

     In connection  with the Bridge Loans,  the Company issued to the holders of
the Bridge Loans Bridgeholders  Options to purchase 1,000,000 Bridge Units at an
exercise price of $.50 per Bridge Unit.  Each Bridge Unit  originally  contained
one  share of Common  Stock,  one  Class A  Warrant  and one Class B  Redeemable
Purchase  Warrant  (collectively,  the "Class B Warrants").  The Company and the
purchasers  have amended the Bridge Units to eliminate the Class B Warrants such
that  each  Bridge  Unit  contains  one  share of  Common  Stock and one Class A
Warrant.  The Company has registered the  Bridgeholder  Options,  900,000 of the
Bridge Units and the 900,000 shares of Common Stock and 900,000 Class A Warrants
contained in the Bridge Units for resale in the  Concurrent  Offering,  although
the  Company  will  not  receive  any of the  proceeds  from  the  sale  of such
securities.  The Class A Warrants  included in the Bridge Units are identical to
the Class A Warrants  offered  by the  Company  in the IPO.  The  holders of the
Bridgeholder  Options may exercise such options at an exercise price of $.50 per
Bridge Unit to obtain such Bridge  Units at any time.  The Bridge  Units and the
securities contained therein are not transferable until the earlier of 13 months
from  November  2,  1995 or at such  earlier  date  as may be  permitted  by the
Company.  The  securities  underlying  the  Bridge  Units  shall  not be  traded
separately for a period of 12 months from November 2, 1995 without prior written
consent of the Company.

     In November 1995,  Bridge Unit holders  exercised 797,917 Units at $.50 per
Unit. In May 1996, one Bridge Unit holder exercised 6,250 Units.

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<PAGE>

Rule 701 Warrants

     In October 1994, the Company issued  2,080,000  warrants to purchase Common
Stock at $3.50 per share  pursuant to Rule 701 under the  Secutities  Act ("Rule
701 Warrants") to certain officers and employees of the Company.  These Rule 701
Warrants  vest  in 1/3  increments  over a  thirty  six  month  period  and  are
exercisable  until  September 30, 1999. In the event that the number of Rule 701
Warrants issued by the Company  exceeds the aggregate  monetary limits set forth
under Rule 701,  the number of Rule 701  Warrants  issued to the holders will be
reduced  pro  rata  and  the  remaining  warrants  will  not be  subject  to the
provisions of Rule 701. See "Shares  Eligible for Future Sales and  Registration
Rights."

Delaware Law and Certain Charter and By-Law Provisions

     The Company will be subject to the provisions of Section 203 of the General
Corporation  Law of Delaware.  Section 203  prohibits a  publicly-held  Delaware
corporation  from  engaging  in a  "business  combination"  with an  "interested
stockholder"  for a period of three years after the date of the  transaction  in
which  the  person  became  an  interested  stockholder,   unless,  among  other
exceptions,  the business  combination is approved by (i) the Board of Directors
prior to the date the  interested  stockholder  obtained such status or (ii) the
holders of two-thirds of the outstanding shares of each class or series of stock
entitled to vote  generally in the election of directors,  not  including  those
shares owned by the interested  stockholder.  A "business  combination" includes
mergers,  asset sales and other transactions resulting in a financial benefit to
the  interested  stockholder.  Subject to  certain  exceptions,  an  "interested
stockholder" is a person who, together with affiliates and associates,  owns, or
within three years did own, 15% or more of the corporation's voting stock.

     The Company's  By-Laws  contain a provision  whereby a  stockholder  of the
Company may nominate an individual or  individuals  for election to the Board of
Directors only if such nomination is made in writing (i) at least ninety days in
advance of the Company's  annual  meeting of  stockholders  or (ii) within seven
days following  notice of a special meeting of stockholders  for the election of
directors.  Accordingly,  it will be more difficult for stockholders,  including
those holding a majority of the outstanding shares, to force an immediate change
in the composition of the Board of Directors.

     The Company's  Certificate of  Incorporation  contains  certain  provisions
permitted  under  the  General  Corporation  Law  of  Delaware  relating  to the
liability of  directors.  The  provisions  eliminate a director's  liability for
monetary damages for a breach of fiduciary duty, except in certain circumstances
involving  wrongful acts,  such as the breach of a director's duty of loyalty or
acts or omissions which involve intentional misconduct or a knowing violation of
law. The Company's  Certificate  of  Incorporation  also contains  provisions to
indemnify  its  directors  and officers to the fullest  extent  permitted by the
General   Corporation   Law  of   Delaware.   The  Company   has  entered   into
indemnification  agreements  with  its  current  directors  and  certain  of its
executive officers.  These agreements have the practical effect in certain cases
of eliminating the ability of stockholders to collect monetary damages from such
individuals.  The Company  believes that these  provisions and  agreements  have
assisted the Company in attracting and retaining qualified  individuals to serve
as directors and officers.

Transfer Agent and Registrar

     The transfer agent and registrar for the Company's Units,  Common Stock and
Class A Redeemable  Warrants is Continental Stock Transfer and Trust Company,  2
Broadway, New York, New York 10004.

Nasdaq Quotation

     The Company's  Common Stock and Warrants  trade on Nasdaq under the trading
symbols HEMX and HEMXW, respectively.

Shares Eligible for Future Sale and Registration Rights

     The Company has  15,587,842  shares of Common Stock  outstanding as of July
10, 1996 including the Common Stock included in the 6,110,917 Units  outstanding
(each Unit consists of one share of Common Stock and one Class A Warrant). There
are 195,833 unexercised  Bridgeholder Options (consisting of one share of Common
Stock and one  Class A  Warrant)  outstanding.  In  addition,  the  Company  has
9,470,675 shares of Common Stock,  228,502 stock options and 7,997,797  warrants
outstanding.  All of these shares, options and warrants other than the 6,110,917

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<PAGE>

outstanding  Units and the 195,833  Bridgeholder  Options were issued in private
transactions  not  involving a public  offering and,  therefore,  are treated as
"restricted  securities"  subject  to the  restrictions  of Rule 144  under  the
Securities  Act.  Restricted  securities  may not be resold except in compliance
with the  registration  requirements  of the  Securities  Act or  pursuant to an
exemption therefrom, such as the exemptions provided by Rule 144 and Rule 144A.

     In general,  under Rule 144 as  currently  in effect,  a person (or persons
whose shares are  aggregated),  including an affiliate  (as that term is defined
under the rules and  regulations  of the Securities  Act), who has  beneficially
owned  "restricted  securities"  for at least two years will be entitled to sell
within  any  three  month  period a number of shares  that does not  exceed  the
greater of (i) 1% of the then outstanding shares of Common Stock  (approximately
15,587,842 shares) or (ii) the average weekly trading volume in the Common Stock
on all national  securities  exchanges  and/or  reported  through the  automated
quotation system of registered securities  associations during the four calendar
weeks  immediately  preceding the date on which notice of the sale is filed with
the  Commission.  Sales  pursuant to Rule 144 are also subject to certain  other
requirements  regarding the manner of sale,  notice and  availability of current
public  information  about the  Company.  A person (or persons  whose shares are
aggregated)  who is not deemed to have been an  affiliate  of the Company at any
time during the three months immediately  preceding the sale is entitled to sell
restricted  securities pursuant to Rule 144(k) without regard to the limitations
described  above,  provided that three years have expired since the later of the
date on which such  restricted  securities were acquired from the Company or the
date they were acquired from an affiliate of the Company. Affiliates,  including
members of the Board of  Directors  and  certain of the  officers of the Company
continue  to be  subject  to  such  limitations.  As  defined  in Rule  144,  an
"affiliate" of an issuer is a person that directly, or indirectly through one or
more  intermediaries,  controls or is controlled  by, or is under common control
with, such issuer.

     Subject  to  certain  limitations  on the  aggregate  offering  price  of a
transaction  and other  conditions,  Rule 701 under  the  Securities  Act may be
relied upon with respect to the resale of securities  originally  purchased from
the  Company by its  employees,  directors,  officers,  consultants  or advisers
between May 20, 1988,  the effective date of Rule 701, and November 2, 1995 (the
date the Company became subject to the reporting  requirements of the Securities
Act),  pursuant  to written  compensatory  benefit  plans or  written  contracts
relating to the  compensation  of such  persons.  Shares of Common  Stock of the
Company issued in reliance on Rule 701 are deemed to be restricted stock and may
be sold by persons  other  than  affiliates  subject  only to the manner of sale
provisions of Rule 144 and by affiliates under Rule 144 without  compliance with
its two year minimum  holding period  requirements.  The Company has issued Rule
701 Warrants to purchase  2,080,000  shares of Common Stock at an exercise price
of $3.50 per share in reliance  upon Rule 701.  All shares which may qualify for
sale under Rule 701, however, are subject to a two year lockup.

     The  Company  has  secured  written  agreements  from  all of  the  current
shareholders,   except  as  described  below,  not  to  sell,  assign,   pledge,
hypothecate  or otherwise  dispose of  (collectively,  "Transfer"),  directly or
indirectly,  any shares of Common Stock and to waive all registration rights for
a period of 24 months  from  November  2, 1995,  subject to certain  exceptions,
without  the prior  written  consent of the  Company.  The Company has agreed to
certain  exceptions to its request as follows.  William A. Carter, the Company's
President,  Chief Executive  Officer and Chairman who holds 1,065,235  shares of
Common Stock,  has agreed not to sell or transfer his securities for a period of
36  months  from  November  2,  1995.  Holders  of  the  Bridge  Notes  who  own
Bridgeholder  Options to purchase up to 1,000,000  Bridge Units in the aggregate
and the  holder of 5,898  shares  of Common  Stock  have  agreed  not to sell or
transfer  their  securities  for a period of 13  months  without  the  Company's
consent. In addition,  pursuant to the Tisch/Tsai Restructuring,  the Tisch/Tsai
Entities, which hold an aggregate of 485,832 shares of Common Stock, have agreed
with the Company not to exercise their registration rights or otherwise transfer
any securities held by them except to certain permitted transferees for a period
of 18 months commencing November 2, 1995 in the event that the affiliates of the
Company  agree to  terms  no more  advantageous  that  those  of the  Tisch/Tsai
Entities  for a period of 24 months  commencing  November  2, 1995.  The lock-up
period for the Tisch/Tsai  Entities shall  terminate in the event that any other
securityholders  of the Company other than the holders of the Bridge Loans shall
be released from their lock-up periods. In addition, the Canaan Entities,  which
hold an  aggregate  of  511,220  shares of Common  Stock,  Michael  Dubilier,  a
principal  stockholder  of the Company who  beneficially  owns 689,780 shares of
Common Stock,  and three  holders of an aggregate of 1,253,227  shares of Common
Stock  have  agreed  not to  exercise  their  registration  rights or  otherwise
transfer  any  securities  held by them for a  period  of 18  months  commencing
November 2, 1995. The lock-up period for the Canaan  Entities,  Michael Dubilier
and the holder of 18,432  shares of Common  Stock shall  terminate  in the event

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<PAGE>

that any other  securityholders  of the  Company  shall be  released  from their
lock-up periods. In addition,  the Company has decided not to seek an additional
restriction  on the sale of the shares  owned by Mr.  Cohn and  certain  related
parties,  all of whom hold warrants to purchase  156,672 shares of Common Stock.
See "Business--Legal  Proceedings." The Company believes, however, that pursuant
to the terms of the  Series A  Purchase  Agreement,  as  amended,  Mr.  Cohn and
related  parties are subject to a 180-day  restriction  of the Transfer of their
securities.  In addition,  as of October 25, 1995, the holders of  approximately
10% of the Company's securities had not executed lock-up agreements.

     Under the terms of a Registration  Rights Agreement,  dated May 9, 1989, as
amended,  by and among the  Company  and E. Paul  Charlap,  Michael C.  Burrows,
Martin H. Dubilier,  Keys Foundation and James S. Tisch, if the Company proposes
to register any of its securities  under the Securities Act, other than pursuant
to an initial public  offering or a registration  statement on Forms S-8 or S-4,
such holders,  or their successors,  are entitled to notice of such registration
and to include their shares of Common Stock in such  registration.  These rights
are subject to certain  conditions and  limitations,  including the right of the
underwriter to limit the number of shares included in such registration. Certain
of such holders may require the Company to file a Registration  Statement  under
the  Securities  Act at the  Company's  expense  with respect to their shares of
Common Stock, and the Company is required to use its best efforts to effect such
registration,  subject to certain  conditions  and  limitations.  Further,  such
holders may require the Company to file  additional  registration  statements on
Form S-3,  subject to certain  conditions and  limitations.  The parties to this
Registration  Rights  Agreement  have  subordinated  their rights therein to the
registration  rights granted under the Series A Purchase Agreement (as described
below), to the extent of any conflict between the registration rights granted by
the two agreements.  These  registration  rights have been waived by the holders
for a period of two years commencing November 2, 1995.

     Under the terms of the  Series A Purchase  Agreement,  as  amended,  if the
Company  proposes to register any of its securities  under the  Securities  Act,
either for its own  account or for the  account of any other  security  holders,
other than pursuant to an initial public offering,  such persons are entitled to
notice of such  registration  to include  their  shares of Common  Stock in such
registration.  These rights are subject to certain  conditions  and  limitations
including the right of the  underwriters  to limit the number of shares included
in such  registration.  Certain of such  holders  may require the Company on not
more than two occasions,  to file a Registration  Statement under the Securities
Act at the Company's  expense with respect to their shares of Common Stock,  and
the  Company  is  required  to  use  its  best  efforts  with  respect  to  such
registration, subject to certain conditions and limitations. Further, certain of
such holders may require the Company to file additional  Registration Statements
on Form S-3,  subject  to  certain  conditions  and  limitations.  In  addition,
notwithstanding the foregoing,  the Agreement provides that immediately prior to
the IPO, as well as  subsequent  to the IPO, the Company was obligated to file a
"shelf"  registration  statement pursuant to Rule 415 of the Securities Act with
respect to shares of Common  Stock  issuable  pursuant  to the  exercise  of the
outstanding  warrants  and/or  pursuant  to the  conversion  of any  notes  then
outstanding,  which were issued  pursuant to the February 1992 Investor Loan, as
amended  by the Cohn  Amendment,  and June  1993  Investor  Loan.  Such  "shelf"
registration  statements must be kept current and effective by the Company for a
maximum of four years. As a condition of the IPO,  registration rights, with the
exception of two holders have been waived by the holders.

     The Tisch/Tsai Entities have an additional piggyback  registration right of
20% of their shares of Common Stock in the event that the Company shall register
securities  in a  secondary  offering  expected  to result in gross  proceeds in
excess of $10 million. In addition, the Company, at its sole expense, has agreed
to take all necessary  actions to register all securities held by the Tisch/Tsai
Entities  after the  expiration of the 18 month lock-up  period.  For six months
following the expiration of the lock-up period, the Tisch/Tsai Entities may sell
no more than 25,000 shares pursuant to such registration per quarter.

     All sales of  securities  pursuant to Rule 144 by the  Tisch/Tsai  Entities
during the 24-month  affiliate  lock-up period, if any, will be made through the
Representative,  as broker, provided that all other Rule 144 sales by affiliates
during  the   affiliate   lock-up   period  shall  be   conducted   through  the
Representative.

     Pursuant  to the 1994  Common  Stock  Financing,  the  Company  has granted
certain demand  registration rights to the holders of 2,050,000 shares of Common
Stock. If holders of 50% or more of these shares give the appropriate  notice to
the  Company,  the  Company  will file a new  registration  statement  under the
Securities  Act with respect to these shares.  These holders are subject to a 24
month Lock Up Agreement as described  above.  Jerome  Belson has agreed to waive
his  registration  rights  granted  in  connection  with the 1994  Common  Stock
Financing.

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<PAGE>

     The holders of the Bridge  Units have  agreed not to sell the Bridge  Units
for a period of 13 months from November 2, 1995,  subject to earlier  release at
the Company's  discretion.  Jerome Belson,  owner of 100,000  Bridge Units,  has
agreed to waive his registration rights in connection with the Bridge Financing.

     In connection  with the  restructuring  of the Original  Brauser Note,  the
Company has granted to Gerald Brauser a one-time,  piggyback  registration right
to register 75,000 shares of Common Stock  underlying the warrants issued to Mr.
Brauser,  subject  to the  discretion  of the  underwriter  of  such  subsequent
offering.  In addition,  the Company has granted Mr. Brauser registration rights
for 100,000 shares of Common Stock issued pursuant to this restructuring,  which
rights are  identical  to those  granted to the  holders of the shares of Common
Stock issued in  connection  with the 1994 Common Stock  Financing (as described
above); these rights of Mr. Brauser, however, are exercisable only if holders of
50% or more of the shares of Common  Stock  issued in  connection  with the 1994
Common  Stock  Financing  give notice and elect to exercise  their  rights.  Mr.
Brauser has entered into a 24-month Lock Up Agreement as described above.

     In connection  with the extension of a note,  the Company  granted to Myron
Cherry  either  registration  rights for  certain  securities  owned by him or a
reduction in the exercise  price of his options to $1.75 per share.  Because Mr.
Cherry has not advised the Company of his election,  the Company has reduced the
exercise price of his warrants to $1.75 per share.


                                  LEGAL MATTERS

     The validity of the  securities  offered hereby will be passed upon for the
Company by Silverman, Collura & Chernis, P.C., New York, New York.


                                     EXPERTS

     The consolidated  financial  statements of Hemispherx  BioPharma,  Inc. and
subsidiaries  as of December 31, 1994 and 1995, and for each of the years in the
three year period ended December 31, 1995,  have been included herein and in the
registration  statement  in reliance  upon the report of KPMG Peat  Marwick LLP,
independent  certified public accountants,  appearing elsewhere herein, and upon
the authority of said firm as experts in accounting and auditing.


                             ADDITIONAL INFORMATION

     The  Company is subject to the  reporting  requirements  of the  Securities
Exchange  Act.  The  Company  has  filed  with the  Commission,  a  Registration
Statement on Form S-1  (including  any  amendments  thereto,  the  "Registration
Statement")  under the Securities  Act. This  Prospectus does not contain all of
the  information  set forth in the  Registration  Statement and the exhibits and
schedules thereto.  For further  information with respect to the Company and the
Common Stock, reference is made to the Registration Statement,  and the exhibits
and  schedules  thereto.  Statements  contained  in  this  Prospectus  as to the
contents of any contract or any other document are not necessarily complete and,
in each  instance,  reference  is made to the copy of such  contract or document
filed as an exhibit to the Registration  Statement.  The Registration  Statement
and the exhibits and the  schedules  thereto  filed with the  Commission  may be
inspected,  without charge, at the public reference facilities maintained by the
Commission at Room 1024,  Judiciary  Plaza, 450 Fifth Street,  N.W.  Washington,
D.C. 20549,  and at the  Commission's  Regional Offices at 7 World Trade Center,
13th Floor,  New York, New York 10048 and Northwestern  Atrium Center,  500 West
Madison Street, Suite 1400, Chicago, Illinois 60661. Copies of such material may
also be obtained upon written request from the Public  Reference  Section of the
Commission at 450 Fifth Street,  N.W.,  Washington,  D.C.  20549,  at prescribed
rates.

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<PAGE>

                                GLOSSARY OF TERMS

25A:                   2", 5"  oligoadenylate;  a short  polymer of  ribonucleic
                       acid containing the base adenine.

25A Synthetase:        A set of  specific  enzymes  that join  together  certain
                       building blocks,  termed nucleotides,  to form 2-5A; 2-5A
                       synthetase  must be  activated by a  double-stranded  RNA
                       molecule.

AIDS:                  Acquired  Immunodeficiency  Syndrome; a disease caused by
                       HIV  infection  due to  the  progressive  decline  in the
                       body's  immune  system  leading  to fatal  infections  or
                       malignancies.

Analogue:              A chemical  compound with a structure  similar to that of
                       another  compound,  but differing from it in respect to a
                       certain component.

Antiviral:             Destroying viruses or suppressing their replication.

CD4:                   A certain  type of immune  cell which  protects  the body
                       against foreign organisms such as bacteria and viruses.

Controlled Study:      A clinical  trial in which  patients are divided into two
                       groups,  one of which receives the drug being tested, and
                       the  second of which  receives  either a saline  solution
                       (see  definition of "Placebo") or another drug  purported
                       to be  clinically  beneficial  in  the  treatment  of the
                       indication in question.  In trials where the second group
                       receives  saline  solution,  the study is  referred to as
                       "placebo-controlled".  In trials  where the second  group
                       receives a drug purported to be beneficial,  the study is
                       referred to as "active-controlled".

Cytokine:              Proteins  released by a cell population on contact with a
                       stimulus, which act as intracellular mediators.

Double-Blind:          Refers  to a study  where  neither  the  patient  nor the
                       treating  physician  knows  whether  the patient is being
                       administered with drug or placebo.

Enzyme:                A protein that  accelerates a chemical  reaction of other
                       substances in the body.

FDA:                   Food  and  Drug   Administration;   the   United   States
                       governmental agency with authority for drug approval.

Good Laboratory
 Practice (GLP):       Federal   regulations  which  govern  the  generation  of
                       laboratory data in a manner that is acceptable to the FDA
                       in  its   review  of   ongoing   studies   and  New  Drug
                       Applications (NDA) for marketing approval.

HIV:                   Human-immunodeficiency  virus;  the  virus  which  causes
                       AIDS.

Interferon:            IFN; A family of proteins that exert anti-viral activity;
                       interferons  also have immune  regulatory  and anti-tumor
                       activities.  IFN can be  classified  into three  distinct
                       classes termed alpha, beta or gamma.

Interleukin:           A group of protein factors, produced by immune cells.

In vitro:              Refers to  studies  taking  place  within  an  artificial
                       environment such as a test tube.

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<PAGE>

In vivo:               Refers to studies taking place within a living body.

Lymphokine:            Antiviral and  anticancer  products,  such as interferon,
                       produced by certain types of blood cells.

Macrophage:            A blood cell which ingests foreign substances.

Multicenter:           Refers to a trial  conducted  at more  than one  clinical
                       site.

Oncogene:              Refers to genes with the capacity to cause  production or
                       growth of a tumor.

Open-Label:            Refers to a study where both the patient and the treating
                       physician  know the  identity  of the drug which is being
                       administered.

Placebo:               A dummy treatment  administered to the control group in a
                       controlled  clinical  trial in order to  distinguish  the
                       specific  and  nonspecific  effects  of the  experimental
                       treatments.

Placebo-Controlled:    Refers  to a trial in  which a  portion  of the  patients
                       receive a drug and a portion  of the  patients  receive a
                       placebo,  and the activity of the drug is compared to the
                       activity of the placebo.

Protein Kinase:        Refers  to an  enzyme  which  can  modify  other  protein
                       factors  leading to  inhibition of viral  replication  or
                       tumor cell growth.

Randomized:            Refers to a procedure  where the treatment that a patient
                       will  receive  (i.e.  the active  drug or a  placebo)  is
                       determined by chance.

Ribonuclease:          Any enzyme that  decomposes  ribonucleic  acids,  such as
                       viral RNA.

Ribonuclease L:        A specific  ribonuclease  that is present in human cells,
                       but dormant  (inactive) until activated by 2-5A or Oragen
                       drugs.

Transitory Response:   A tumor response which is characterized by the subsequent
                       recurrence of disease  (notwithstanding  the continuation
                       of treatment) after a limited period of time.

                                       75
<PAGE>

                   HEMISPHERx BIOPHARMA, INC. AND SUBSIDIARIES
                   Index to Consolidated Financial Statements
                                        
                                                                            Page
                                                                            ----
Independent Auditors' Report...............................................  F-2

Consolidated Balance Sheets at December 31, 1994 and 1995,
 and the unaudited Consolidated Balance Sheet at
 June 30, 1996 ............................................................  F-3

Consolidated Statements of Operations for each of the years in the  
  three-year period ended December 31, 1995, and the unaudited six month 
  periods ended June 30, 1995 and 1996.....................................  F-4

Consolidated Statements of Stockholders' Equity(Deficit) for each of 
  the years in the three-year period ended December 31, 1995, and the 
  unaudited six month period ended June 30, 1996...........................  F-5

Consolidated Statements of Cash Flows for each of the years in the  
  three-year period ended December 31, 1995, and the unaudited six month 
  periods ended June 30, 1995 and 1996.....................................  F-6

Notes to Consolidated Financial Statements.................................  F-8

                                      F-1
<PAGE>

                          INDEPENDENT AUDITORS' REPORT

The Board of Directors and Stockholders
Hemispherx BioPharma, Inc.:

We have  audited the  accompanying  consolidated  balance  sheets of  Hemispherx
BioPharma, Inc. and subsidiaries (the Company) as of December 31, 1994 and 1995,
and  the  related   consolidated   statements   of   operations,   stockholders'
equity(deficit),  and cash flows for each of the years in the three-year  period
ended  December  31,  1995.  These  consolidated  financial  statements  are the
responsibility of the Company's management.  Our responsibility is to express an
opinion on these consolidated financial statements based on our audits.

We  conducted  our  audits  in  accordance  with  generally   accepted  auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement.  An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements.  An audit also includes
assessing the  accounting  principles  used and  significant  estimates  made by
management,  as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the consolidated  financial statements referred to above present
fairly,  in  all  material  respects,   the  financial  position  of  Hemispherx
BioPharma,  Inc.  and  subsidiaries  as of December  31, 1994 and 1995,  and the
results  of their  operations  and their cash flows for each of the years in the
three-year period ended December 31, 1995 in conformity with generally  accepted
accounting principles.



                                                      KPMG PEAT MARWICK LLP

March 1, 1996, except for paragraph 4 
of Note 14, which is as of March 21, 1996.
Miami, Florida

                                       F-2


<PAGE>

                   HEMISPHERx BIOPHARMA, INC. AND SUBSIDIARIES
                           Consolidated Balance Sheets
                  December 31, 1994 and 1995 and June 30, 1996
<TABLE>
<CAPTION>

                                                                 December 31,                     June 30,
                                                       ------------------------------            ----------
                                                                                                 (unaudited
                                                          1994                1995                   1996
                                                          ----                ----                   ----
                                     ASSETS
<S>                                                    <C>                 <C>                   <C>
Current assets:       
 Cash and cash equivalents......................       $   61,005          $11,291,167             $2,538,880 
 Prepaid expenses and other current assets......            2,757               62,742                 86,949 
                                                       ----------          -----------             ---------- 
    Total current assets........................           63,762           11,353,909              2,625,829 
Property and equipment, net ....................          104,328               53,953                 61,064 
Patent and trademarks rights, net...............        1,434,420            1,245,092              1,338,155 
Security deposits...............................           48,931               46,564                 18,323 
                                                       ----------          -----------          ------------- 
    Total assets................................       $1,651,441          $12,699,518          $   4,043,370 
                                                       ==========          ===========          ============= 
                                                                                                              
                  LIABILITIES AND STOCKHOLDERS' EQUITY(DEFICIT)                                               
                                                                                                              
Current liabilities:                                                                                          
 Installments of obligation under                                                                             
   capital leases...................................   $   23,308         $         --          $          --
 Accounts payable...................................    2,251,721            1,095,637                791,482 
 Accrued expenses (note 5)..........................    2,296,855            2,263,096                574,115 
 Notes payable (note 3).............................    5,045,000            4,920,000                     -- 
 Stockholder notes payable (note 4).................    3,425,910                   --                     -- 
                                                       ----------           ----------           ------------ 
    Total current liabilities.......................   13,042,794            8,278,733              1,365,597 
                                                                                              
Commitments and contingencies (notes 3, 4, 6,                                                                 
  8, 9, 10, 11, 12 and 14)                                                                                    
Redeemable preferred stock (note 7).................    3,238,334                   --                     -- 
Stockholders' equity(deficit) (notes 4, 6 and 7):                                                             
  Preferred stock subscribed........................    4,772,233                   --                     --             
  Common stock subscribed...........................    1,061,331                   --                     -- 
  Preferred stock...................................    7,200,017                   --                     -- 
  Common stock......................................        5,136               15,581                 15,587 
  Additional paid-in capital........................   14,036,082           47,949,530             47,952,649 
  Accumulated deficit...............................  (41,704,486)         (43,544,326)           (45,290,643)
                                                       ----------           ----------           ------------
    Total stockholders' equity(deficit).............  (14,629,687)           4,420,785              2,677,773 
                                                       ----------           ----------              --------- 
    Total liabilities and stockholders' equity......   $1,651,441          $12,699,518           $  4,043,370 
                                                       ==========          ===========           ============ 
</TABLE>
                                                                               
          See accompanying notes to consolidated financial statements.

                                       F-3


<PAGE>

                   HEMISPHERx BIOPHARMA, INC. AND SUBSIDIARIES
                      Consolidated Statements of Operations
     For each of the years in the three-year period ended December 31, 1995
        and the unaudited six month periods ended June 30, 1995 and 1996

<TABLE>
<CAPTION>

                                                                    December 31,                       Six Months Ended June 30,
                                                ----------------------------------------------       ------------------------------
                                                     1993            1994              1995             1995               1996
                                                     ----            ----              ----             ----               ----
                                                                                                              (Unaudited)
<S>                                             <C>              <C>               <C>               <C>               <C>         
Revenues:
 Research and development .................     $    48,000      $     75,758      $     65,910     $     33,260       $    18,369 
 License fees .............................            --             100,000         2,900,000        1,000,000                -- 
                                                -----------      ------------      ------------      -----------       ----------- 
    Total revenues ........................          48,000           175,758         2,965,910        1,033,260       $    18,369 
                                                -----------      ------------      ------------      -----------       ----------- 
Costs and expenses:                                                                                                                
 Research and development .................       2,118,896         1,637,769         1,028,662          533,210           694,505 
 General and administrative ...............       3,347,476         2,617,762         2,880,443        1,274,403         1,235,566 
                                                -----------      ------------      ------------      -----------       ----------- 
    Total cost and expenses ...............       5,466,372         4,255,531         3,909,105        1,807,613         1,930,070 
Debt conversion expense ...................      (1,214,500)          (10,500)         (149,384)        (149,384)               -- 
Interest income ...........................          18,427            25,091            95,887            2,910           165,565 
Interest expense ..........................      (1,087,605)       (1,067,869)         (843,148)        (451,448)               -- 
                                                -----------      ------------      ------------      -----------       ----------- 
   Net loss ...............................     $(7,702,050)     $ (5,133,051)     $ (1,839,840)    $ (1,372,275)      $(1,746,137)
                                                ===========      ============      ============      ===========       ===========
  Pro forma net loss and net loss per                                                                           
    share (note 2(e)):
  Pro forma weighted average shares
    outstanding ...........................            --          11,536,276        14,199,701        13,047,506      
  Pro forma net loss per share ............            --        $       (.44)     $       (.13)     $       (.11)     
                                                                 ============      ============      ============      
Weighted average shares outstanding .......            --                --                --                --          15,581,592 
Net loss per share ........................            --                --                --                --        $       (.11)
                                                                                                                       ============ 
</TABLE>

          See accompanying notes to consolidated financial statements.

                                       F-4

<PAGE>
                   HEMISPHERx BIOPHARMA, INC. AND SUBSIDIARIES
            Consolidated Statements of Stockholders' Equity(Deficit)
     For each of the years in the three-year period ended December 31, 1995
            and the unaudited six month period ended June 30, 1996
<TABLE>
<CAPTION>
                                         Preferred      Common                    
                                           stock         stock       Preferred       Common       Preferred      Common     
                                        subscribed    subscribed       stock          stock         stock         stock     
                                          shares        shares        shares         shares      subscribed    subscribed   
                                          ------        ------        ------         ------      ----------    ----------   
<S>                                      <C>           <C>            <C>           <C>        <C>              <C>         
Balance at December 31, 1992..........          --           --       810,029       5,133,986  $          --    $      --   
 Preferred stock subscribed ..........      41,667           --            --              --        500,004           --   
 Issuance of stock purchase 
  warrants, net ......................          --           --            --              --             --           --   
 Redeemable preferred stock
  dividend............................          --           --            --              --             --           --   
 Debt to preferred stock
  conversion..........................     433,343           --            --              --      3,381,219           --   
 Accounts payable to equity
  conversion..........................      42,502           --            --              --        212,510           --   
 Net loss.............................          --           --            --              --             --           --   
                                         ---------    ---------     ---------       ---------      ---------    ---------   
Balance at December 31, 1993..........     517,512       28,026       810,029       5,133,986     $4,093,733      $30,227   
 Preferred stock subscribed ..........     130,000           --            --              --        650,000           --   
 Debt to preferred/common
  stock conversion....................       3,600      300,000            --           2,770         28,500      150,000   
 Redeemable preferred stock
  dividend............................          --           --            --              --             --           --   
 Warrants issued in connection
  with imputed and forgiven 
  interest charges....................          --           --            --              --             --           --   
 Issuance of stock purchase 
  warrants, net.......................          --           --            --              --             --           --   
Common stock subscribed...............          --    1,750,000            --              --             --      875,000   
 Stock options exercised..............          --        4,926            --              --             --        6,104   
 Net loss.............................          --           --            --              --             --           --   
                                        ----------   ----------   -----------       ---------    -----------   ----------   
Balance at December 31, 1994..........     651,112    2,082,952       810,029       5,136,756    $ 4,772,233   $1,061,331   
 Redeemable preferred stock
  dividend ...........................          --           --            --              --             --           --   
 Debt to preferred stock
  dividend ...........................          --           --       172,414              --             --           --   
 Warrants issued in connection
  with imputed and forgiven
  interest charges ...................          --           --            --              --             --           --   
Preferred stock subscribed............      10,000           --            --              --         50,000           --   
Debt to common stock
  conversion .........................          --      100,000            --              --             --       50,000   
 Issuance of common stock
  certificates .......................          --   (2,182,952)           --       2,182,952             --   (1,111,331)  
 Issuance of Preferred Stock
  certificates .......................    (626,112)          --       626,112              --     (4,472,233)          --   
Convert Redeemable to Common..........          --           --            --         343,879             --           --   
Convert Preferred to Common...........     (35,000)          --    (1,608,555)      1,807,088       (350,000)          --   
Issuance of Common Stock,
  net of issuance cost................          --           --            --       5,313,000             --           --   
Warrants Exercised....................          --           --            --         797,917             --           --   
Net Loss..............................          --           --            --              --             --           --   
                                          --------    ---------     ---------      ----------     ----------    ---------   
Balance at December 31, 1995..........          --           --            --      15,581,592     $       --    $      --   
Warrants exercised ...................          --        6,250            --              --             --        3,125
Net Loss (unaudited)..................          --           --            --              --             --           --  
                                         ---------    ---------     ---------      ----------     ----------    ---------  
Balance at June 30, 1996 (unaudited)            --        6,250            --      15,581,592     $       --    $   3,125   
                                         =========    =========     =========      ==========     ==========    =========   
<CAPTION> 
                                                           "C" Common stock                                                     
                                                          ---------------------                        Common
                                                         .001       Additional                         stock              Total
                                         Preferred        Par         paid-in        Accumulated    subscriptions     stockholders'
                                           stock         value        capital          deficit       receivable      equity(deficit)
                                           -----         -----        -------          -------       ----------      ---------------
<S>                                      <C>             <C>        <C>              <C>                <C>           <C>          
Balance at December 31, 1992..........   $7,200,017      $5,133     $13,842,861      $(28,869,385)      $    --       $ (7,821,374)
 Preferred stock subscribed ..........           --          --              --                --            --            500,004
 Issuance of stock purchase 
  warrants, net ......................           --          --         150,000                --            --            150,000
 Redeemable preferred stock
  dividend............................           --          --        (329,692)               --            --           (329,692)
 Debt to preferred stock
  conversion..........................           --          --              --                --            --          3,381,219
 Accounts payable to equity
  conversion..........................           --          --              --                --            --            212,510
 Net loss.............................           --          --              --        (7,702,050)           --         (7,702,050)
                                          ---------   ---------       ---------        -----------    ---------         -----------
Balance at December 31, 1993..........   $7,200,017      $5,133     $13,663,169      $(36,571,435)      $    --       $(11,579,156)
 Preferred stock subscribed ..........           --          --              --                --            --            650,000
 Debt to preferred/common
  stock conversion....................           --           3           1,382                --            --            179,885
 Redeemable preferred stock
  dividend............................           --          --        (372,552)               --            --           (372,552)
 Warrants issued in connection
  with imputed and forgiven 
  interest charges....................           --          --         631,583                --            --            631,583
 Issuance of stock purchase 
  warrants, net.......................           --          --         112,500                --            --            112,500
Common stock subscribed...............           --          --              --                --            --            875,000
 Stock options exercised..............           --          --              --                --            --              6,104
 Net loss.............................           --          --              --        (5,133,051)           --         (5,133,051)
                                         ----------    --------     -----------      -------------    ---------       -------------
Balance at December 31, 1994..........   $7,200,017    $  5,136     $14,036,082      $(41,704,486)    $      --       $(14,629,687)
 Redeemable preferred stock
  dividend ...........................           --          --        (314,873)               --            --           (314,873)
 Debt to preferred stock
  dividend ...........................      749,383          --              --                --            --            749,383
 Warrants issued in connection
  with imputed and forgiven
  interest charges ...................           --          --         572,681                --            --            572,681
Preferred stock subscribed............           --          --              --                --            --             50,000
Debt to common stock
  conversion .........................           --          --              --                --            --             50,000
 Issuance of common stock
  certificates .......................           --       2,183       1,109,148                --            --                 --
 Issuance of Preferred Stock
  certificates .......................    4,472,233          --              --                --            --                 --
Convert Redeemable to Common..........           --         344       3,552,863                --            --          3,553,207
Convert Preferred to Common...........  (12,421,633)      1,807      12,769,826                --            --                 --
Issuance of Common Stock,
  net of issuance cost................           --       5,313      15,825,644                --            --         15,830,957
Warrants Exercised....................           --         798         398,159                --            --            398,957
Net Loss..............................           --          --              --        (1,839,840)           --         (1,839,840)
                                           --------     -------     -----------       ------------     --------         ---------- 
Balance at December 31, 1995..........    $      --     $15,581     $47,949,530      $(43,544,326)    $      --         $4,420,785
Warrants exercised ...................           --           6           3,119                --            --              3,119
Net Loss (unaudited)..................           --          --              --        (1,074,378)           --         (1,074,378)
                                           --------     -------     -----------       ------------     --------         ---------- 
Balance at June 30, 1996 (unaudited)      $      --     $15,587     $47,952,649      $(45,290,463)    $      --         $2,677,773
                                          =========     =======     ===========      =============    =========         ==========

</TABLE>


          See accompanying notes to consolidated financial statements.

                                       F-5


<PAGE>

                   HEMISPHERx BIOPHARMA, INC. AND SUBSIDIARIES
                      Consolidated Statements of Cash Flows
     for each of the years in the three-year period ended December 31, 1995
        and the unaudited six month periods ended June 30, 1995 and 1996
                Increase (Decrease) in Cash and Cash Equivalents

<TABLE>
<CAPTION>

                                                                              December 31,               Six Months Ended June 30
                                                               -------------------------------------      --------------------------
                                                                    1993          1994          1995          1995         1996
                                                                    ----          ----          ----          ----         ----
                                                                                                                (unaudited)
<S>                                                           <C>            <C>            <C>            <C>          <C>         
Cash flows from operating activities:
 Net loss .................................................   $(7,702,050)  $(5,133,051)   $(1,839,840)  $(1,372,275)   $(1,746,137)
 Adjustments to reconcile net loss to net                                                                                           
  cash used in operating activities:                                                                                                
  Depreciation and amortization of property                                                                                         
   and equipment ..........................................       256,190       115,061         54,000        27,000         24,636
  Amortization of patent rights ...........................       265,571       256,341        222,000       111,000         43,238 
  Issuance of stock purchase warrants .....................       150,000       112,500           --              --             -- 
  Imputed interest charges ................................          --         150,000         41,360        41,360             -- 
  Debt conversion expense .................................     1,214,500        10,500        149,384       149,383             -- 
  Write-off of patent rights ..............................          --         285,190        100,017        81,838             -- 
  Gain on disposal of property and equipment ..............          --          17,197           --              --             -- 
  Changes in assets and liabilities:                                                                                                
   Prepaid expenses and other current assets ..............       109,069        (1,506)       (59,985)      (19,749)       (24,208)
   Accounts payable .......................................       261,402       661,732     (1,156,084)       73,033       (304,156)
   Accrued expenses .......................................       252,117     1,565,450        547,561       601,987     (1,688,981)
   Deferred revenue .......................................          --            --             --       1,000,000             -- 
   Security deposits ......................................        22,563         8,441          2,368         1,459         28,241 
                                                              -----------   -----------    -----------     ---------     ---------- 
     Net cash (used in)                                                                                                             
      operating activities ................................    (5,170,638)   (1,952,145)    (1,939,219)      695,036     (3,667,367)
                                                              -----------   -----------    -----------     ---------     -----------
Cash flows from investing activities:                                                                                               
 Purchase of property and equipment .......................          --         (40,000)        (3,625)       (3,624)       (31,745)
 Proceeds from disposal of property and equipment .........          --          11,000           --              --             -- 
 Additions to patent rights ...............................      (403,584)     (351,470)      (132,689)     (130,674)      (136,300)
     Net cash used in investing activities ................   $  (403,584)  $  (380,470)   $  (136,314)  $  (134,289)   $  (168,045)
                                                              ===========   ===========    ===========   ===========    =========== 
</TABLE>
                                                                             
                                   (CONTINUED)                                
                                                                              
          See accompanying notes to consolidated financial statements.       

                                       F-6


<PAGE>

                   HEMISPHERx BIOPHARMA, INC. AND SUBSIDIARIES
                Consolidated Statements of Cash Flows (Continued)
<TABLE>
<CAPTION>

                                                                           December 31,                  Six Months Ended June 30,
                                                           ------------------------------------------   ----------------------------
                                                                1993           1994           1995           1995           1996
                                                                ----           ----           ----           ----           ----
<S>                                                        <C>            <C>            <C>             <C>            <C>       
Cash flows from financing activities:
 Proceeds from shareholder loans .......................   $ 2,540,000    $   925,910    $     35,000    $    35,000   $        -- 
 Proceeds from notes payable ...........................       400,000         35,000       1,762,000      1,662,000            -- 
 Payments on notes payable .............................          --          (80,000)     (1,837,000)      (112,000)   (4,920,000)
 Payments on stockholder notes .........................       (97,566)       (10,000)     (2,860,911)    (1,985,000)           -- 
 Principal payments under capital lease obligation .....       (95,501)        (6,923)        (23,308)            --            -- 
 Deferred offering costs ...............................       130,000           --              --         (187,737)           -- 
 Proceeds from exercise of stock options ...............        30,227           --              --               --            -- 
 Common stock subscription proceeds ....................          --          875,000            --               --            -- 
 Preferred stock subscription proceeds .................       500,004        650,000            --               --            -- 
 Proceeds from issuance of common stock ................          --             --        18,595,000             --         3,125 
 Stock issuance costs ..................................          --             --        (2,764,043)            --            -- 
 Proceeds from exercise of stock warrants ..............          --             --           398,957             --            -- 
                                                           -----------    -----------    ------------     ----------    ---------- 
     Net cash provided (used) in                                                                                                   
      financing activities .............................     3,407,164      2,388,987      13,305,695       (587,737)   (4,916,875)
                                                           -----------    -----------    ------------     ----------    ----------
     Net increase (decrease) in cash and                                                                                           
      cash equivalents .................................    (2,167,058)        56,372      11,230,162        (26,999)   (8,752,287)
Cash and cash equivalents at beginning of period .......     2,171,691          4,633          61,005         61,005    11,291,167 
                                                           -----------    -----------    ------------     ----------    ---------- 
Cash and cash equivalents at end of period .............   $     4,633    $    61,005    $ 11,291,167    $    34,006   $ 2,538,880 
                                                           ===========    ===========    ============     ==========    ========== 
Supplemental disclosures of cash flow information:                                                                                 
                                                                                                                                    
 Cash paid during the year for interest ................   $   459,955    $      --      $    186,503    $        --   $        --
                                                           ===========    ===========    ============     ==========    ========== 
Supplemental disclosure of noncash investing activities:                                                 
 Debt to equity conversion .............................   $ 2,062,434    $   100,000    $    799,383             --            -- 
 Accounts payable and accrued expenses to                                                                                          
  equity conversion ....................................       264,510         74,104          50,000             --            -- 
 Forgiveness of interest ...............................        52,285        458,333         572,681             --            -- 
 Redeemable preferred stock to equity conversion .......   $      --      $      --      $  3,238,334             --            -- 
</TABLE>
                                                                                
          See accompanying notes to consolidated financial statements.          
                                                                                
                                       F-7


<PAGE>

                   HEMISPHERx BIOPHARMA, INC. AND SUBSIDIARIES
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                           December 31, 1994 and 1995

(1) Business

     Hemispherx BioPharma,  Inc. and subsidiaries (the Company),  formerly known
as HEM  Pharmaceuticals  Corp., is a  pharmaceutical  company using nucleic acid
technologies to develop therapeutic products for the treatment of viral diseases
and certain  cancers.  The Company's drug technology  uses  specially-configured
ribonucleic  acid  (RNA).  The  Company's   double-stranded  RNA  drug  product,
trademarked  Ampligen,  is in human clinical development for various therapeutic
indications.  The efficacy and safety of Ampligen is being developed  clinically
for three  anti-viral  indications:  myalgic  encephalomyelitis,  also  known as
chronic fatigue  syndrome  (ME/CFS) (Phase II clinical trial completed and Phase
II/III  clinical trial  authorized);  human  immunodeficiency  virus  associated
disorders  (Phase II clinical  trial);  and chronic  hepatitis B virus infection
(Phase I/II clinical trial in process). The Company also has clinical experience
with Ampligen in patients with certain  cancers  including  renal cell carcinoma
(kidney cancer) and metastatic malignant melanoma.

     The consolidated  financial  statements include the financial statements of
Hemispherx BioPharma, Inc. and its three wholly-owned subsidiaries BioPro Corp.,
BioAegean Corp. and Core BioTech Corp. which were incorporated in September 1994
for the  purpose  of  developing  technology  for  ultimate  sale  into  certain
non-pharmaceutical  specialty  consumer  markets.  All significant  intercompany
balances and transactions have been eliminated in consolidation.

     The company plans to continue to finance its operations  with a combination
of product sales, stock issuances and strategic alliances.  The Company may need
to obtain further financing for the long-term  development and commercialization
of its planned  products in order to realize the commercial  value of its patent
portfolios.

     In November,  1995, the Company  completed an initial public offering (IPO)
of 5,313,000 units of Hemispherx  BioPharma,  Inc.  resulting in net proceeds of
approximately  $15.8  million.  Each unit consists of one share of the Company's
Common Stock and one Class A Redeemable  Warrant,  exercisable  for one share of
Common Stock at $4.00 per share.  These Class A Redeemable  Warrants are subject
to  redemption  two years from November 2, 1995 at $.05 per warrant in the event
that the closing bid price of the  Company's  Common Stock  exceeds  $9.00 for a
specified time period.  In connection  with the IPO, the underwriter was granted
an option to purchase 462,000 units at $5.775 per unit.

(2) Summary of Significant Accounting Policies

 (a) Cash and Cash Equivalents

     Cash equivalents consist of money market, bank certificates of deposit, and
overnight repurchase  agreements  collateralized by money market securities with
original maturities of less than three months.

 (b) Property and Equipment

     Property and equipment  consist of furniture,  fixtures,  office equipment,
leasehold   improvements  and  vehicles  recorded  at  cost.   Depreciation  and
amortization  is computed  using the  straight-line  method  over the  estimated
useful lives of the respective assets, ranging from five to seven years.

     Property  and  equipment  held under  capital  leases are  amortized on the
straight-line  method over the shorter of the lease term or the estimated useful
life of the asset.

     Accumulated  depreciation and amortization as of December 31, 1994 and 1995
is  $587,688  and   $545,956,   respectively.   Accumulated   depreciation   and
amortization as of June 30, 1996 is $570,592.

 (c) Patent and Trademark Rights

     Patents and  trademarks are stated at cost  (primarily  legal fees) and are
amortized using the straight-line method over ten years. The Company reviews its
patents and trademarks  periodically  to determine  whether they have continuing
value.  Such review includes an analysis of the patent and trademark's  ultimate
revenue  and  profitability  potential  on an  undiscounted  cash flow  basis to
support the  realizability  of its  respective  capitalized  cost.  In addition,
management's  review addresses whether the patent and trademark continues to fit
into the Company's strategic business plans. During the years ended December 31,
1994 and 1995, the Company decided not to renew patents in certain countries and
has  recorded  $285,190 and  $100,017  respectively,  relating to the expense of
writing off these patents as a charge to research and  development.  Accumulated
amortization  as of  December  31,  1994  and  1995 is  $877,990  and  $936,407,
respectively. Accumulated amortization as of June 30, 1996 is $792,640.

                                       F-8
<PAGE>

                   HEMISPHERx BIOPHARMA, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
                           December 31, 1994 and 1995

 (d) License Fee Revenue

     Revenue is  recognized  immediately  for  nonrefundable  license  fees when
agreement terms require no additional performance on the part of the Company.

 (e) Proforma and Supplemental Proforma Net Loss Per Share

     Upon the closing of the IPO of common stock,  all shares of Series A, B and
C Preferred Stock (Preferred  Stock)  converted into Common Stock.  Proforma net
loss per share for the years end  December 31, 1994 and 1995 are  calculated  by
dividing net loss by the weighted  average  number of common shares  outstanding
during the period after giving effect for Common Stock equivalents  arising from
stock  options and  warrants and  Preferred  Stock  assumed  converted to Common
Stock.  Pursuant to the requirements of the Securities and Exchange  Commission,
Common  Stock and Common  Stock  equivalents  issued by the  Company  during the
twelve  months  immediately   preceding  the  IPO  have  been  included  in  the
calculation  of the  shares  used in the  calculation  of pro forma net loss per
share (using the treasury stock method and the public offering price).

 (f) Sales of Subsidiary Stock

     The Company intends to account for any sales of its subsidiaries'  stock as
capital transactions.

 (g) New Accounting Pronouncements

     In March,  1995,  the Financial  Accounting  Standards  Board (FASB) issued
Statement  of  Financial  Accounting  Standards  No.  121  "Accounting  for  the
Impairment of  Long-Lived  Assets and for  Long-Lived  Assets to be Disposed Of"
(Statement 121). Statement 121 provides guidance for recognition and measurement
of  impairment  of  long-lived  assets,  certain  identifiable  intangibles  and
goodwill  related  both to assets to be held and used and assets to be  disposed
of. The Company is required to adopt  Statement 121 for the year ended  December
31, 1996. The Company has not yet quantified the impact, if any, of the adoption
of Statement 121 may have on its consolidated financial statements.

     In October 1995, the FASB issued Statement 123, "Accounting for Stock-Based
Compensation"  (Statement  123).  Statement  123 allows  companies the option to
retain the current accounting method for recognizing  stock-based expense in the
financial  statements or to adopt a new accounting method based on the estimated
fair value of employee stock  options.  Companies that do not adopt the new fair
value  based  method will be required  to provide  expanded  disclosures  in the
footnotes.  The Company is required  to adopt  Statement  123 for the year ended
December  31,  1996.  The  Company  expects to  continue  applying  its  current
accounting   method  and  upon  adoption  will  present  the  required  footnote
disclosures.

 (h) Use of estimates

     The  preparation  of financial  statements  in  conformity  with  generally
accepted  accounting  principles  requires  management  to  make  estimates  and
assumptions  that affect the amounts  reported in the financial  statements  and
accompanying notes. Actual results could differ from those estimates.

 (i) Interim Financial Information (Unaudited)

     The unaudited interim condensed  consolidated  financial statements for the
six month  periods  ended June 30, 1995 and 1996 have been  prepared on the same
basis as the Company's audited  consolidated  financial statements as of and for
the year  ended  December  31,  1995.  In the  opinion  of the  management,  all
adjustments,  consisting  of normal  recurring  accruals,  necessary  to present
fairly the financial position of the Company at June 30, 1995 and the results of
operations  and cash flows for the six month  periods  ended  June 30,  1995 and
1996.  The results of operations  for the three month period ended June 30, 1996
are not  necessarily  indicative  of the  results  expected  for the year ending
December 31, 1996.

                                      F-9

<PAGE>

                   HEMISPHERx BIOPHARMA, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
                           December 31, 1994 and 1995

(3) Notes Payable

     Notes  payable at December  31, 1994 and 1995 and  unaudited  June 30, 1996
consisted of the following:

<TABLE>
<CAPTION>

                                                             December 31,          June 30,
                                                       -----------------------   -----------
                                                           1994        1995          1996
                                                           ----        ----          ----
                                                                                 (unaudited)
<S>                                                    <C>          <C>          <C>
February 1992 convertible  note with detachable
 warrants due February 26, 1995, interest payable                
 quarterly at 12% per annum, as amended (Note 14)      $4,920,000   $4,920,000           --
 
June 1993 convertible note with detachable warrants
 due February 28, 1995, interest after September 30,
 1993 payable in Common Stock at $10.85 per share,
 as amended
                                                          100,000         --             --
June 1994 note, payable with 12% interest per
 annum upon completion of financing in excess
 of $3 million                                             25,000         --             --
                                                       ----------   ----------   ------------
                                                       $5,045,000   $4,920,000   $          0
                                                       ==========   ==========   ============
</TABLE>

(4) Stockholder Notes

Stockholder notes at December 31, 1994 consisted of the following:

                                                                   December 31,
                                                                       1994
                                                                   ------------
December  1992 and  February  1993  convertible  notes  
  issued  with  detachable warrants due April 1994, with
  interest at 12% per annum, as amended in 1995...................  $2,400,000

March 1993 note due upon demand, interest payable
  quarterly at 12% per annum......................................     100,000

July 1993 note issued with detachable warrants due at
  option of holder upon completion of future financings,
   with interest at 12% annum, as amended.........................     100,000

December 1994 notes...............................................     750,000

May 1994 note due on demand with interest at 12%
  per annum collateralized by certain patents.....................      75,910
                                                                    ----------
                                                                    $3,425,910
                                                                    ==========

     The Company  had been in default  and amended the terms of the  stockholder
     notes prior to the  completion of its IPO. Upon  completion of the IPO, all
     stockholders  notes  and  accrued  interest  were  paid  in full  from  the
     proceeds.


(5) Accrued Expenses

Accrued  expenses at  December  31,  1994 and 1995 and  unaudited  June 30, 1996
consists of the following:

<TABLE>
<CAPTION>

                                                          December 31,                   June 30,
                                              -------------------------------          -----------
                                                1994                  1995                 1996
                                                ----                  ----                 ----
                                                                                       (Unaudited)
<S>                                           <C>                 <C>                  <C>     
Accrued research and development fees........ $   413,940         $       --           $      --
Deferred rent................................     285,309              228,189                --
Deferred and Accrued payroll and benefits....     470,951              144,047             190,952
Accrued interest.............................     831,995              898,733                --
Accrued professional fees....................     186,950              727,996             227,279
Accrued taxes and other......................     107,710              264,131             155,884
                                               ----------           ----------             -------
                                               $2,296,855           $2,263,096            $574,110
                                               ==========           ==========            ========

</TABLE>

(6) Stockholders' Equity(Deficit)

  (a) Common Stock

     The Company is  authorized  to issue  50,000,000  shares of $.001 par value
Common Stock.  On May 9, 1994,  the Company  declared a 1:2.17015  reverse stock
split and change in par value to $.001 on shares of the  Company's  Common Stock
effective  June 29,  1994.  Effective  November  30, 1994 and June 5, 1995,  the
Company  effected a 2:1 forward  stock split and changed its name to  Hemispherx

                                      F-10


<PAGE>

                   HEMISPHERx BIOPHARMA, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
                           December 31, 1994 and 1995

BioPharma,   Inc.,   respectively.   The  accompanying   consolidated  financial
statements reflect for all periods presented the effect of the 1:2.17015 reverse
stock split,  2:1 forward  stock  split,  and a change in par value to $.001 per
common share.

  (b) Common Stock Options and Warrants

(i) Stock Options

          (A) At December 31, 1994 and 1995, the Company had outstanding options
     to  purchase  556  shares of Common  Stock  exercisable  at any time in the
     future at $1.07 to $2.17 per share,  for options granted prior to 1990. The
     option price  represents the fair market value of each underlying  share of
     Common Stock at the date of grant,  as determined by the Company's board of
     directors.

          (B) The 1990 Stock  Option Plan  provides  for the grant of options to
     purchase up to 460,798  shares of the Company's  Common Stock to employees,
     directors,  and officers of the Company and to consultants,  advisers,  and
     other  persons  whose  contributions  are  important  to the success of the
     Company.  The  recipients  of options  granted  under the 1990 Stock Option
     Plan,  the number of shares to be covered by each option,  and the exercise
     price, vesting terms, if any, duration and other terms of each option shall
     be determined  by the Company's  board of directors or, if delegated by the
     board,  its Compensation  Committee.  No option is exercisable more than 10
     years  and one  month  from the date as of which  an  option  agreement  is
     executed.  These shares become vested through various periods not to exceed
     four years from the date of grant.  Certain  shares  became vested upon the
     underwritten public offering concluded by the Company in November 1995. The
     option price  represents the fair market value of each underlying  share of
     Common Stock at the date of grant,  as determined by the Company's board of
     directors.

     Information  regarding the options approved by the Board of Directors under
the 1990 Stock Option Plan is summarized below:

                                                    December 31        June 30,
                                                ------------------   -----------
                                                                     (Unaudited)
                                    Option
                                     Price       1994         1995         1996
                                 ---------       ----         ----         ----
Outstanding, beginning of year   $ .11-4.34     331,486     285,620     232,830
Granted ......................    3.50-4.34      49,952           0           0
Exercised ....................    1.07-3.80      (4,926)          0           0
Canceled .....................     .11-4.34     (90,892)    (52,790)     (4,328)
                                -----------    --------    --------    --------
Outstanding, end of year .....   $1.07-4.34     285,620     232,830     228,502
                                ===========    ========    ========    ========
Exercisable ..................                  107,000     165,244     174,489
                                               ========    ========    ========
Available for future grants ..                  175,178     227,968     232,296
                                               ========    ========    ========

     The outstanding  options include the right to purchase 45,344 shares of the
Company's Common Stock at $3.50 per share.

     In December  1992,  the Board of  Directors  approved the 1992 Stock Option
Plan (the 1992 Stock  Option  Plan) which  provides  for the grant of options to
purchase  up to  92,160  shares  of the  Company's  Common  Stock to  employees,
directors,  and officers of the Company and to consultants,  advisers, and other
persons  whose  contribution  are  important to the success of the Company.  The
recipients of the options  granted under the 1992 Stock Option Plan,  the number
of shares to be covered by each option,  and the exercise price,  vesting terms,
if any,  duration  and other terms of each  option  shall be  determined  by the
Company's  board of directors.  No option is exercisable  more than 10 years and
one month from the date as of which an option agreement is executed. To date, no
options have been granted under the 1992 Stock Option Plan.

     A general  outline of the Company's  1993 Employee Stock Purchase Plan (the
1993  Purchase  Plan) was approved by the board of  directors in July 1993.  The
outline  of the  1993  Purchase  Plan  provides  for the  issuance,  subject  to
adjustment  for capital  changes,  of an aggregate  of 138,240  shares of Common
Stock  to  employees.  The  1993  Purchase  Plan  will  be  administered  by the

                                      F-11

<PAGE>

                   HEMISPHERx BIOPHARMA, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
                           December 31, 1994 and 1995

Compensation Committee of the board of directors.  Under the 1993 Purchase Plan,
Company  employees will be eligible to participate in semi-annual plan offerings
in which payroll  deductions may be used to purchase shares of Common Stock. The
purchase  price  for such  shares  will be equal to the lower of 85% of the fair
market value of such shares on the date of grant or 85% of its fair market value
of such shares on the date such right is exercised. There have been no offerings
under the 1993  Purchase  Plan to date and no shares of Common  Stock  have been
issued thereunder.

(ii) Warrants

     The warrants  outstanding at December 31, 1995,  related to the issuance of
notes  payable  and  shareholder  notes  payable  (notes  3 and  4)  which  were
exercisable  in either  Common Stock,  Series B or Series C Preferred  Stock and
subject to certain antidilution  adjustments.  Upon completion of the IPO, these
warrants became exercisable only in Common Stock.

                                                Common Stock
                                         -----------------------
                                         Exercise      Number of
                                          Price         Shares        Expiration
                                          -----         ------        ----------
Notes payable:
                                                                        5 years
 February 1992                                                             from
  convertible note (see Note 14)....      $2.00         420,000        IPO date
Stockholders:
 Stockholders.......................      $3.50         292,160      Sept. 1997
 Stockholder........................      $3.50         300,000       Oct. 1999
 Stockholders.......................      $3.50          72,697       Dec. 1997
 Stockholder........................       2.72           4,608        May 1996
 Stockholders.......................       2.00         144,000       Dec. 1997
 Stockholder........................       1.75          75,000       Mar. 2000
 Stockholders.......................       1.75       2,750,000       June 2005
 Stockholders.......................       3.50       2,080,000      Sept. 1999
                                                      ---------
                 Subtotal:                            6,138,465
                                                      =========
(iii) Other Warrants

     In addition,  the Company has issued other warrants  outstanding  totalling
7,535,847 which consists of the following:

     From  February  through  April  1995,  the  Company  executed  Bridge  Loan
Agreements and promissory notes with 17 accredited lenders totaling  $1,500,000.
These notes required  interest at 8% per annum and were paid on the closing date
of the IPO.  Interest  has been  imputed at 12% and is  recognized  as  interest
expense  and  additional  paid in  capital in 1995 to reflect  the  issuance  of
additional  warrants to reflect the reduction in interest.  Such agreements also
included   various   affirmative   and   negative   covenants.   As   additional
consideration,  the lenders  have  options to purchase  1,000,000  bridge  units
issuable upon the effective  date of the IPO at an exercise  price of $.50 for a
period of five years. Management believes these sales are a good measure of fair
value because they represent the only notable  third-party sales of Common Stock
in 1994 and 1995,  prior to the IPO. Such  exercise  price is estimated to be at
fair market value at the date of issuance based on recent sales of securities to
third-parties.  Each bridge unit  consists of one share of Common  Stock and one
Class A Redeemable Common Stock Purchase Warrant exercisable at $4.00 per share.
797,917 units were exercised in 1995 at $.50 per Warrant.

     In June 1995,  the Company  entered into an  agreement  with The Sage Group
whereby, in return for identifying certain distribution partners, The Sage Group
will receive  certain  percentages  of the proceeds from the first  distribution
agreement arising from such identification. In addition, the Company will pay to
The Sage Group a monthly  retainer  and warrants to purchase  100,000  shares of
Common Stock at an exercise price of $1.75 share.

     In connection  with the IPO completed on November 7, 1995, the Company sold
5,313,000 units.  Each unit consisted of one share of common stock and one Class
A Redeemable Warrant exercisable at $4.00 per share.

     Also,  as part of the  underwriting  agreement,  the  underwriter  received
warrants to purchase  462,000 shares of common stock at $5.775 per share as well
as 462,000  Class A  Redeemable  Warrants to purchase  common stock at $6.60 per
share. These warrants expire five years from the date of the IPO.

                                      F-12
<PAGE>

                   HEMISPHERx BIOPHARMA, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
                           December 31, 1994 and 1995

(iv) Subsidiary Warrants

     In May 1995, the officers and directors of BioAegean Corp. were elected and
approved.  The board of directors  approved the issuance of 6,000,000  shares of
Common Stock,  of which  1,000,000  shares are to be offered for sale to certain
investors at $1.00 per share. In addition,  the directors  approved  options for
directors and officers totaling  1,200,000 shares at an exercise price of $1.00.
In consideration for licensing certain patents,  the board authorized  1,000,000
shares of common stock to be issued to Hemispherx  BioPharma,  Inc., options for
an  additional  1,000,000  shares of common  stock at the lesser of the  initial
public  offering price of BioAgean Corp. or $5.00 per share and 10,000 shares of
Preferred stock to Hemispherx BioPharma, Inc.

     The Company has granted  certain  rights to the  debtholders  to have their
securities  registered  under the Act. The Company  believes the warrants have a
value  which is not  material  for  purposes  of the  financial  statements  and
accordingly,  no value has been attributed to these warrants in the accompanying
consolidated financial statements.

(7) Preferred Stock

     The  Company  is  authorized  to issue  5,000,000  shares of $.01 par value
Preferred Stock.

     The Company had the following  Preferred  Stock shares issued,  outstanding
and subscribed at December 31, 1994. All preferred stock was converted to Common
Stock in 1995 in connection with the IPO.
<TABLE>
<CAPTION>

                                                                 December 31, 1994
                                           ---------------------------------------------------------------
                                            Number of        Number                              Stated
                                            shares         of shares          Stated            par value
                                           subscribed        issued           par value         subscribed
                                           ----------        ------           ---------         ----------
<S>                                          <C>             <C>             <C>                <C>   
Series A1 Redeemable Preferred Stock.....        --          370,370         $1,999,998
Series A2 Preferred Stock................        --          487,805          4,000,001
Series B Preferred Stock.................        --          222,224          2,000,016
Series C Preferred Stock.................    651,112         100,000          1,200,000          4,772,233
</TABLE>


     The preferred  shares accrued a compounded  annual  cumulative  dividend of
$.702 per share on Series A 1, $1.23 per share on Series A 2, $1.35 per share on
Series B and $1.80 per share on Series C. As of  December  31,  1994,  preferred
dividends  in arrears  amounted to  approximately  $2,941,000,  $1,100,000,  and
$1,004,000  on  outstanding  shares  of the  Series A 2,  Series B and  Series C
Preferred  Stock,  respectively.  Cumulative  dividends on Series A1  Redeemable
Preferred Stock have been reflected as an addition to Redeemable Preferred Stock
and as a charge to additional paid-in capital.

(8) Research, Consulting and Supply Agreements

     The Company has entered into various clinical  research  agreements for the
purpose of  undertaking  clinical  evaluations  of the safety  and  efficacy  of
Ampligen. The Company's obligation under these agreements is primarily dependent
on the number of actual  patients  enrolled in the study.  During 1993, 1994 and
1995,  the  Company  incurred  approximately  $325,000,  $247,000  and  $179,000
respectively, of research fees under these agreements.

     The Company has entered into a  pharmaceutical  use license  agreement with
Temple  University (the Temple  Agreement)  pursuant to which Temple granted the
Company a world-wide  license for the term of the agreement  for the  commercial
sale of Oragen  products  using patents and related  technology  held by Temple.
Under the agreement  the Company  agreed,  among other things,  to pay royalties
between 2% and 4% of net sales, with a minimum of $30,000 per year commencing in
1995. In May and June 1994,  Temple  University gave notice of certain purported
violations of certain reporting  requirements  contained in its Temple Agreement
with the Company and nonpayment of certain invoices in the approximate amount of
$1,500.  In July 1994, Temple notified the Company that it considered the Temple
Agreement terminated (note 14).

     The Company has entered into  agreements for consulting  services which are
performed at certain  institutions  and by certain  individuals.  The  Company's
obligation  to fund these  agreements  can  generally  be  terminated  after the
initial funding period,  which generally ranges from one to three years or on an
as-needed  monthly  basis.  During  1993,  1994 and 1995,  the Company  incurred
approximately $243,000, $130,000 and $87,000,  respectively,  of consulting fees
under these agreements.

                                      F-13
<PAGE>

                   HEMISPHERx BIOPHARMA, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
                           December 31, 1994 and 1995

     In 1987, the Company entered into an agreement (the "Supply  Agreement") to
purchase $2.7 million of compounds  used in the  manufacture  of Ampligen  which
expired in December  1992.  Pursuant to the terms of the Supply  Agreement,  the
Company agreed to pay royalties of .5% of net sales,  subject to certain minimum
and maximum  requirements,  for 5 years to the supplier of raw materials for the
manufacture of Ampligen.

     In September  1995, the Company entered into an agreement with Rivex Pharma
Inc.,  ("Rivex"),  pursuant  to which  Rivex will  provide  various  services in
connection  with the marketing and exclusive  distribution of Ampligen in Canada
on an  emergency  drug release  basis.  Under the terms of this  agreement,  the
Company  will supply and Rivex will  purchase as much  Ampligen as  necessary to
satisfy Rivex's customers at a mutually agreed upon cost. In return,  Rivex will
retain the exclusive right to market and distribute Ampligen in Canada.

(9) 401(K) Plan

     In December  1995,  the Company  established a defined  contribution  plan,
effective  January 1, 1995, the Hemispherx  BioPharma  Employees 401(K) Plan and
Trust  Agreement  (the 401(K) Plan).  All full time employees of the Company are
eligible to  participate  in the 401(K) Plan  following one year of  employment.
Subject to certain  limitations  imposed by federal tax laws,  participants  are
eligible to  contribute  up to 15% of their  salary  (including  bonuses  and/or
commissions)  per annum.  Participants'  contributions to the 401(K) Plan may be
matched by the Company at a rate determined  annually by the Board of Directors.
Each participant  immediately vests in his or her deferred salary contributions,
while  Company  contributions  will  vest  over one  year.  In 1995 the  Company
provided  matching  contributions to each employee for up to 6% of annual pay or
$25,500.  The  Company  also  absorbed  the cost of  employee  contributions  of
$25,500.

(10) Vendor Agreements

     The  Company  and a law firm  entered  into a  stand-still  agreement.  The
Company  provided for an aggregate  payment of $85,000 before  November 18, 1994
and  monthly  payments  beginning  February  1, 1995 in the  amount of  $15,000,
subject to escalation,  until all obligations are paid in full. In addition, the
stand-still  agreement provides for additional  payments upon any financings and
repayment  in full from the  proceeds  of an IPO.  The  outstanding  balance  at
December 31, 1994 of approximately $484,000 was paid in 1995.

     On February  20, 1996 the Company  entered  into an  agreement to amend the
lease for its principal  office.  For a payment of $85,000 all outstanding  rent
and charges accrued through December 31, 1995 were forgiven by the landlord. The
term of the lease was  extended  through  April 30, 2000 with an average rent of
$14,507 per month, plus applicable taxes and charges. Note 12, leases,  reflects
these new terms.

(11) Royalties, License, and Employment Agreements

     The Company  also has entered  into a licensing  agreement  with a group of
individuals  and Hahnemann  University  relating to their  contributions  to the
development of certain compounds,  including  Ampligen,  and to obtain exclusive
information  and  regulatory  rights  relating  to these  compounds.  Under this
agreement,  the Company  will pay 2% of net sales  proceeds  of Ampligen  not to
exceed an aggregate amount of $6 million per year through 2005.

     As described in note 8, the Company has agreed to pay  royalties  under the
Temple Agreement and to its supplier of raw materials.

     The  Company  has  employment  agreements  with four of its  officers.  The
aggregate annual base compensation  under the employment  agreements is $576,000
and $540,000 respectively.  In addition,  certain of these officers are entitled
to  receive  performance  bonuses  of up to 25% of the  annual  base  salary (in
addition to the bonuses described below). Pursuant to the employment agreements,
certain  officers  were  granted  options  under the 1990 Stock  Option  Plan to
purchase an aggregate of 82,942 shares of the Company's Common Stock at exercise
prices  ranging from  $2.72-$4.34  and Rule 701  Warrants to purchase  2,000,000
shares of Common  Stock at $3.50 per  share.  One of the  employment  agreements
provides for bonuses  based on gross  proceeds  received by the Company from any
joint venture or corporate partnering agreement.

     The Company has a non-exclusive  license (the "Hopkins License") with Johns
Hopkins University ("Hopkins") in the U.S., Canada and France related to nucleic
acid complexes.  Pursuant to the Hopkins Agreement,  the Company is obligated to
pay a royalty ranging from 3% to 6% of net commercial sales for products sold by
the Company with certain minimum annual royalties.

                                      F-14
<PAGE>

                   HEMISPHERx BIOPHARMA, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
                           December 31, 1994 and 1995

     In October  1994,  the  Company  entered  into a licensing  agreement  with
Bioclones  (Propriety) Limited  (SAB/Bioclones) with respect to codevelopment of
various RNA drugs,  including Ampligen, for a period ending three years from the
expiration  of the last  licensed  patents.  The  licensing  agreement  provides
SAB/Bioclones with an exclusive  manufacturing and marketing license for certain
southern  hemisphere  countries  (including  certain countries in South America,
Africa and  Australia)  as well as the United  Kingdom and Ireland (the licensed
territory).  In exchange  for these  marketing  and  manufacturing  rights,  the
licensing  agreement provides for: (a) a $3 million cash payment to the Company,
all of which has been  received as of December 31, 1995;  (b) the  formation and
issuance to the Company of 24.9% of the capital  stock of a company  which shall
develop  and operate a new  manufacturing  facility  by  SAB/Bioclones,  and (c)
royalties  of 6% to 8% of net sales of the  licensed  products  in the  licensed
territories as defined, after the first $50 million of sales. SAB/Bioclones will
be granted a right of first  refusal to  manufacture  and supply to the  Company
licensed  products  for not  less  than  one-third  of its  world-wide  sales of
Ampligen, excluding SAB/Bioclones-related sales. In addition, SAB/Bioclones will
have the right of first refusal for oral vaccines in the licensed territory.

     In October 1994,  the Board of Directors  granted a director of the Company
the right to receive 3% of gross  proceeds of any licensing fees received by the
Company pursuant to the SAB licensing agreement, a fee of .75% of gross proceeds
in the event that SAB makes a tender offer for all or  substantially  all of the
Company's assets, including a merger, acquisition or related transaction,  and a
fee of 1% on all  products  manufactured  by SAB. The Company may prepay in full
its obligation to provide commissions up to $1,050,000 within a ten year period.

     In July 1995,  the Company  entered into an agreement  with the  Vernacular
Group whereby,  in return for  identifying  certain  corporate  partners for the
BioPro  subsidiary,  the  Vernacular  Group  would  receive  from the  Company a
minority stock position in the subsidiary and a percentage of all licensing fees
and royalties received in connection therewith.

     On  December  5, 1995,  the Company  retained  the law firm of Akin,  Gump,
Strauss,  Hauer & Feld,  L.L.P.  (Akin,  Gump) to provide general legal counsel,
advise and  representation  with  respect to various  United  States  regulatory
agencies.  Initially, Akin, Gump will provide representation before the Food and
Drug  Administration  (FDA).  In addition,  the  agreement  allows for incentive
payments for obtaining a letter from the FDA evidencing Ampligen's approvability
for HIV disease  treatment.  If such  approval is obtained by March 15, 1996 the
incentive  payment is  $1,000,000.  If obtained  by June 15, 1996 the  incentive
payment is $750,000.

(12) Leases

     The  Company has several  noncancelable  operating  leases for the space in
which its principal offices are located and certain office  equipment.  See note
10 above.

     Future minimum lease payments under  noncancelable  operating leases are as
follows:

Year ending                                                   Operating
December 31,                                                   leases
- ------------                                                 ----------
1996...................................................      $  263,246
1997...................................................         271,791
1998...................................................         280,411
1999...................................................         292,144
2000...................................................          91,516
                                                             ----------
   Total minimum lease payments........................      $1,199,108
                                                             ==========

     Rent expense  charged to operations  for the years ended December 31, 1993,
1994  and  1995  amounted  to  approximately  $223,000,  $173,000  and  $289,000
respectively.  The Company recognizes rent expense on a straight-line basis over
the lease term, and the difference between rent expense on a straight-line basis
and the base rental is deferred and included in accrued expenses at December 31,
1994 and 1995 (note 5).

                                      F-15
<PAGE>

                   HEMISPHERx BIOPHARMA, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
                           December 31, 1994 and 1995

(13) Income Taxes

     At December  31,  1995,  the  Company  had  available  net  operating  loss
carryforwards of approximately  $39,300,000 million for Federal and state income
tax which expire over various years through 2010. The difference between the net
operating losses for tax and financial statement purposes relates principally to
amortization  of  patents  and  related  costs,   inventory  usage,  and  leases
capitalized for financial  statements  purposes,  which are operating leases for
tax purposes.  In addition,  for Federal  income tax  purposes,  the Company has
approximately  $9,000 of unused  investment  and job tax  credits  available  to
offset future taxes, if any, expiring 1996 through 1999.

     The  expiration  dates  of the  net  operating  loss  carryforwards  are as
follows:

Expiration   Tax loss
               date                                               carryforwards
               ----                                               -------------
               1999..............................................  $   130,974
               2003...............................................   1,773,967
               2004...............................................   5,402,521
               2005...............................................   3,534,484
               2006...............................................   8,654,551
               Thereafter.........................................  19,821,428
                                                                   -----------
                                                                   $39,317,925
                                                                   ===========

     If certain  substantial changes in ownership should occur there would be an
annual  limitation  on the amount of tax  attribute  carryforwards  which can be
utilized in the future.

     The Company has provided a valuation allowance for it's deferred tax assets
in an amount equal to it's net operating loss carry-forwards.

(14) Contingencies

     The Company was a defendant in a lawsuit instituted in 1991 by participants
in a  double-blind  placebo-controlled  clinical  trial of Ampligen  therapy for
ME/CFS.  The plaintiffs  alleged that the Company or its alleged agents promised
them that they would receive Ampligen after the  placebo-controlled  study at no
cost for periods  ranging  from  "until  marketable"  to "for life."  Plaintiffs
sought  compensatory  and  punitive  damages.  The court  granted the  Company's
motions for summary  judgment upon all claims  alleged by the plaintiffs in this
case.  The  plaintiffs  have appealed from these orders before the United States
Court of Appeals for the Ninth  Circuit.  In January 1996,  the Court of Appeals
denied their appeal and sustained the  Company's  position.  On the basis of the
Court of Appeals  favorable  decision,  the Company believes the lawsuit is over
with no material effect on the Company.

     In February  1991,  a university  advised the Company of its position  that
employees  of the  university  were  the  inventors  of an  issued  U.S.  patent
regarding  the  use  of  Ampligen  in  combination  with  various  other  agents
(including AZT) for the treatment of HIV infection. As issued, this patent names
the Company's Chief  Executive  Officer as sole inventor and the Company as sole
assignee.  The  university  has demanded that the patent be reissued  naming the
university's  employees as inventors and the university as assignee. The Company
has  refused  to take  such  action.  No  formal  claim  has  been  filed by the
university. If such claim were filed and if such claim were found to have merit,
the loss of the patent at issue would not have a  materially  adverse  effect on
the Company's  long-range  business since the  university  would only be able to
limit and/or prevent the Company's use of Ampligen in  combinations  with AZT in
the treatment of HIV.

     In  November  1994,  the  Company  filed  suit  against  Temple  University
("Temple")  in the Superior  Court of the State of Delaware  ("Superior  Court")
seeking a  declaratory  judgment that the Temple  Agreement  (note 8) remains in
full force and effect and seeking  monetary damages in excess of $10 million for
Temple's  alleged  breach of its  obligations of good faith and fair dealing and
certain terms of the Temple Agreement. Temple has filed a motion to dismiss this
lawsuit  upon the grounds of lack of  personal  jurisdiction.  In January  1995,
Temple  filed  separate  litigation  against  the Company in the Court of Common
Pleas of  Philadelphia  County  seeking  declaratory  judgment  that the  Temple
Agreement  has been  lawfully  terminated  as of July 1, 1994,  together with an
award of costs  including  attorney  fees, in bringing the action.  The Court of
Common  Pleas has stayed  further  proceedings  in that  litigation  pending the
outcome of the  Company's  Superior  Court case. If the Company were to lose its
claim, the loss of the licensing  agreement could have a material adverse effect
on the Company's  future business as Temple or its new licensees,  if any, could
become competitors of the Company.

                                      F-16
<PAGE>

                   HEMISPHERx BIOPHARMA, INC. AND SUBSIDIARIES
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
                           December 31, 1994 and 1995

     In March 1995, the Company instituted a declaratory judgment action against
the  February  1992  noteholder  of a $5 million  convertible  note and a second
defendant  in the  United  State  District  Court for the  Eastern  District  of
Pennsylvania  ("the  Pennsylvania  action") to declare as void,  set aside,  and
cancel the February 1992 convertible note between the Company and the noteholder
("the Note"). In addition, the noteholder instituted suit against the Company on
the Note in the  Circuit  Court of the 15th  Judicial  District  in and for Palm
Beach County, Florida,  seeking judgment on the note, plus attorneys fees, costs
and  expenses;  in August  1995,  this  action was stayed by the  Florida  Court
pending the outcome of the  Pennsylvania  action.  The  noteholder  also filed a
motion for a  preliminary  injunction  in the  Pennsylvania  court to enjoin the
Company from  disbursing the proceeds of a public offering in the amount of $5.8
million,  which motion was granted in November,  1995. On February 15, 1996, the
Company reached an agreement to settle this matter.  Terms and conditions of the
settlement  include  payment of $6,450,000  to the  noteholder to cover the note
balance and legal  expenses.  The noteholder and related parties are to maintain
certain Warrants that were granted prior to the lawsuit.  Other Warrants granted
to the noteholder in the note restructuring in 1994 were relinquished. The funds
under this settlement were paid on March 21, 1996. Mutual releases were executed
which completed the settlement of the litigation.

     The  Company  is  subject  to claims  and legal  actions  that arise in the
ordinary  course  of their  business.  Management  believes  that  the  ultimate
liability,  if any, with respect to these claims and legal actions will not have
a material  effect on the  financial  position or results of  operations  of the
Company.

(15) Subsequent Events (Unaudited)

     In July 1996, the Company  consummated a private  offering of its preferred
stock  pursuant to Rule 506 of  regulation as  promulgated  by the SEC under the
Securities  Act of 1933 as amended.  The Company issued 6,000 shares of Series D
Preferred Stock, $.01 par value at a purchase price of $1,000 per share.

     The  Company  entered  into  several  consulting  arrangements  whereby the
Company issued  warrants to purchase the Company's  Common Stock as compensation
for  services to be  performed.  The Company  will record a non-cash  expense of
approximately $670,000 in 1996 and $30,000 in 1997 (over the period in which the
warrants vest) with corresponding  credits to additional paid in capital for the
same amounts.

                                      F-17
<PAGE>

================================================================================

     No dealer,  salesman or any other  person has been  authorized  to give any
information or to make any  representations  other than those  contained in this
Prospectus in connection with the offer made by this Prospectus and, if given or
made, such information or representations must not be relied upon as having been
authorized  by the Company or the  Representative.  Neither the delivery of this
Prospectus nor any sale made hereunder shall under any circumstances  create any
implication  that there has been no change in the affairs of the  Company  since
the date hereof. This Prospectus does not constitute an offer or solicitation by
anyone in any jurisdiction in which such offer or solicitation is not authorized
or in which the person making such offer or  solicitation is not qualified to do
so or to anyone to whom it is unlawful to make such offer or solicitation.


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


                                TABLE OF CONTENTS

                                                                            Page
                                                                            ----
Additional Information ................................................    2, 73
Prospectus Summary ....................................................        3
Risk Factors ..........................................................        7
Capitalization ........................................................       16
Selected Financial Data ...............................................       17
Price Range of Common Stock ...........................................       18
Dividends .............................................................       18
Use of Proceeds .......................................................       18
Management's Discussion and Analysis of                                   
   Financial Condition and Results                                        
   of Operations ......................................................       19
Business ..............................................................       23
Management ............................................................       50
Resales by Selling Securityholders ....................................       60
Certain Transactions ..................................................       62
Description of Securities .............................................       68
Shares Eligible for Future Sale .......................................       73
Legal Matters .........................................................       73
Experts ...............................................................       73
Financial Statements ..................................................      F-1


================================================================================

================================================================================


                           HEMISPHERx BIOPHARMA, INC.




                          2,770 SHARES OF COMMON STOCK
                        2,427,275 SHARES OF COMMON STOCK
                       UNDERLYING SERIES D PREFERRED STOCK
                         890,543 SHARES OF COMMON STOCK
                             UNDERLYING COMMON STOCK
                                PURCHASE WARRANTS



                                   ----------
                                   PROSPECTUS
                                   ----------






                               September 16, 1996





================================================================================


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