AVAX TECHNOLOGIES INC
POS AM, 1998-05-15
BIOLOGICAL PRODUCTS, (NO DIAGNOSTIC SUBSTANCES)
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      As filed with the Securities and Exchange Commission on May 15, 1998
    

                                                      Registration No. 333-09349

================================================================================
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   -----------
                                         
                         POST-EFFECTIVE AMENDMENT NO. 5
                                          
                                       TO
                                    FORM SB-2
                             REGISTRATION STATEMENT
                                      Under
                           THE SECURITIES ACT OF 1933

                                   -----------

                             AVAX TECHNOLOGIES, INC.
                 (Name of Small Business Issuer in Its Charter)

                                   -----------

         Delaware                         2836                      13-3575874
(State or jurisdiction of    (Primary Standard Industrial       (I.R.S. Employer
    incorporation or              Classification Code            Identification
      organization)                     Number)                      Number)

                                4520 Main Street
                                    Suite 930
                              Kansas City, MO 64111
                                 (816) 960-1333
                                www.avax-tech.com

            (Address and telephone number of Small Business Issuer's
          principal executive offices and principal place of business)

                                   -----------

                             JEFFREY M. JONAS, M.D.
                      President and Chief Executive Officer
                                4520 Main Street
                                    Suite 930
                              Kansas City, MO 64111
                                 (816) 960-1333
            (Name, address and telephone number of agent for service)

                                   -----------

                                    Copy to:

                                  IRA L. KOTEL
                            Roberts, Sheridan & Kotel
                           A Professional Corporation
                         12 East 49th Street, 30th floor
                            New York, New York 10017
                                 (212) 299-8600

                                   -----------

                Approximate date of proposed sale to the public:
   From time to time after the effective date of this Registration Statement.

                                   -----------

If any of the  securities  being  registered on this Form are to be offered on a
delayed or continuous  basis  pursuant to Rule 415 under the  Securities  Act of
1933, check the following box: |X|

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

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

If delivery  of the  prospectus  is  expected  to be made  pursuant to Rule 434,
please check the following box: |_|

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



<PAGE>

The Registrant hereby amends this  Registration  Statement on such date or dates
as may be necessary to delay its effective date until the Registrant  shall file
a further  amendment that specifically  states that this Registration  Statement
shall  thereafter  become  effective  in  accordance  with  Section  8(a) of the
Securities  Act of  1933  or  until  the  Registration  Statement  shall  become
effective  on such  date  as the  Securities  and  Exchange  Commission,  acting
pursuant to said Section 8(a), may determine.



<PAGE>

Information  contained  may herein is  subject to  completion  or  amendment.  A
registration  statement  relating  to these  securities  has been filed with the
Securities and Exchange Commission.  These securities not be sold nor may offers
to buy be  accepted  prior  to  the  time  the  registration  statement  becomes
effective.  This  prospectus  shall  not  constitute  an  offer  to  sell or the
solicitation of an offer to buy nor shall there be any sale of these  securities
in any State in which such offer,  solicitation  or sale would be unlawful prior
to registration or qualification under the securities laws of any such State.

                                                                      PROSPECTUS

   
                    Subject to Completion, Dated May 15, 1998

                                6,080,830 Shares
    
                             AVAX TECHNOLOGIES, INC.
                                  Common Stock

   
This  Prospectus  relates to the offer (the  "Offering") by the  securityholders
named  herein under the caption  "Selling  Securityholders"  (collectively,  the
"Selling Securityholders") for sale to the public of the following securities of
AVAX Technologies,  Inc. (the "Company"):  (i) 1,080,898 shares of the Company's
common stock,  par value $.004 per share (the "Common  Stock");  (ii)  4,950,703
shares of Common Stock issuable upon conversion of currently  outstanding shares
of Series B  Convertible  Preferred  Stock,  par value  $.01 per  share,  of the
Company  ("Series B Preferred  Stock");  and (iii) 49,229 shares of Common Stock
issuable upon (a) the  conversion  of shares of Series B Preferred  Stock of the
Company  issuable upon  exercise of the warrants  issued to the designees of the
placement  agent of the  Series B  Offering  described  herein  (the  "Series  B
Placement Warrants") and (b) exercise of warrants issued to the designees of the
placement  agent  for  certain  bridge  financing  transactions  of the  Company
described herein (the "Bridge Placement  Warrants," and together with the Series
B Placement Warrants, the "Placement Warrants").  The number of shares of Common
Stock issuable upon conversion of the Series B Preferred Stock and upon exercise
of the  Placement  Warrants is subject to  adjustment  in certain  events.  This
Prospectus  relates to the  shares of Common  Stock  remaining  to be sold in an
offering which commenced on July 7, 1997 for an aggregate of 7,047,788 shares of
Common Stock.
    

The  Company  will not receive  any  proceeds  from the sale of shares of Common
Stock.  The Company is not expected to receive any proceeds from the exercise of
the Placement Warrants since the Placement Warrants may be exercised pursuant to
a cashless  exercise  provision.  In the event that the  Placement  Warrants are
exercised for cash,  the Company  intends to use such net cash  proceeds  (after
estimated  expenses of this  Offering  of  approximately  $620,000)  for general
working capital  purposes.  Proceeds,  if any, from the exercise for cash of all
the Placement Warrants, before deduction of estimated expenses of this Offering,
would be  approximately  $160,000.  Whether,  how and to what  extent any of the
Placement  Warrants  will be exercised,  and whether the Placement  Warrants are
exercised for cash or not, cannot be predicted by the Company.

The  Selling  Securityholders  have  advised  the  Company  that  they may sell,
directly or through brokers,  all or a portion of the securities  offered hereby
in negotiated  transactions or in one or more  transactions in the market at the
price prevailing at the time of sale. In connection with such sales, the Selling
Securityholders and any participating  broker may be deemed to be "underwriters"
of the Common  Stock  within the meaning of the  Securities  Act of 1933.  It is
anticipated that usual and customary  brokerage fees will be paid by the Selling
Securityholders in all open market transactions.  The Company will pay all other
expenses of this Offering. See "Plan of Distribution."

The Company has informed the Selling  Securityholders that the anti-manipulation
provisions of Regulation M promulgated under the Securities Exchange Act of 1934
may apply to the sales of their  shares  offered  hereby.  The Company  also has
advised the Selling  Securityholders  of the  requirement  for  delivery of this
Prospectus in connection with any sale of the shares offered hereby.

   
The Company is in the research and development  stage, has not had any operating
revenues,  and at March 31, 1998,  had an accumulated  deficit of  approximately
$8,920,453.  The  Company is  continuing  to incur  losses and  expects to incur
significantly increasing additional losses for the foreseeable future.

The Common Stock is listed for quotation on the Nasdaq SmallCap Market under the
symbol  "AVXT." The last  reported  sale price of the Common Stock on the Nasdaq
SmallCap Market on May 11, 1998, was $ 4.063 per share. The prices of the Common
Stock which may be obtained  on such market are not  necessarily  related to the
Company's  assets,  book value,  results of operations or any other  established
criteria of value, and should not be regarded as any indication of future market
price of the Common Stock.  See "Risk Factors,"  "Description of Securities" and
"Plan of Distribution."  There can be no assurance that an active trading market
in the Company's securities will develop or be sustained.
    

                                   ----------

THE SECURITIES OFFERED HEREBY INVOLVE A HIGH DEGREE OF RISK. SEE "RISK FACTORS."

                                   ----------

   THE COMMON STOCK HAS 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 __________, 1998


<PAGE>

                              AVAILABLE INFORMATION

The Company is a "reporting  company" as such term is employed in the Securities
Exchange  Act of 1934 and  intends to furnish  to  registered  holders of Common
Stock, annual reports containing financial statements examined by an independent
accounting  firm and  quarterly  reports  for the first  three  quarters of each
fiscal year containing interim unaudited financial information.

The  Company  has  filed  with  the  Securities  and  Exchange  Commission  (the
"Commission")  a  Registration   Statement  on  Form  SB-2  (together  with  all
amendments and exhibits  thereto being herein  referred to as the  "Registration
Statement") under the Securities Act of 1933. For further  information about the
Company and the securities offered hereby, reference is made to the Registration
Statement and to the financial  statements and exhibits filed as a part thereof.
The 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,  each such  statement  being  qualified  in all
respects by such reference. The Registration Statement, as well as other reports
and other information  filed by the Company,  can be inspected and copied at the
public  reference  facilities  maintained by the Commission at 450 Fifth Street,
N.W.,  Washington,  D.C. 20549,  and at the  Commission's  Regional Offices at 7
World Trade  Center,  New York,  New York 10048.  Copies of such material can be
obtained upon written  request  addressed to the  Commission,  Public  Reference
Section,  450 Fifth Street, N.W.,  Washington,  D.C. 20549, at prescribed rates.
The Commission maintains a site on the World Wide Web at http://www.sec.gov that
contains reports,  proxy and other information  regarding  registrants that file
electronically with the Commission.

                                       2

<PAGE>

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

                               PROSPECTUS SUMMARY

The  following  summary  does not purport to be complete and is qualified in its
entirety  by  reference  to the  more  detailed  information  and the  financial
statements and notes thereto appearing elsewhere in this Prospectus,  including,
without limitation, the information under "Risk Factors," or incorporated herein
by reference, and, accordingly,  should be read in conjunction therewith. Unless
otherwise  indicated to the contrary,  the information in this Prospectus  gives
effect to a two-for-one  reverse stock split of the Common Stock effected on May
13, 1997.

                                 COMPANY SUMMARY

AVAX(TM)  Technologies,  Inc. ("AVAX" or the "Company"),  is a development stage
biopharmaceutical  company which  intends to acquire  rights to, and to develop,
technologies and products for the treatment of cancer and other life-threatening
diseases.  The Company  initially  intends to focus its efforts primarily on the
development of immunotherapies and chemotherapies for cancer. Immunotherapy is a
rapidly developing segment of the cancer therapeutic market.

In 1995,  the  Company  licensed  (the  "TJU  License")  from  Thomas  Jefferson
University  ("TJU") an issued U.S.  patent and certain U.S.  and foreign  patent
applications  covering  a  cancer  vaccine  containing  a cancer  patient's  own
modified  tumor  cells,  and a method for making and using such a vaccine.  This
technology  allows the  Company to produce an  autologous  cell  vaccine (an "AC
Vaccine")  that attempts to stimulate  the patient's  immune system to eliminate
the cancer.  This  technology  has emerged  from  research  conducted at TJU and
primarily  involves the removal of a patient's own tumor cells,  modifying  them
with a small molecule known as a hapten, and reintroducing the product back into
the  patient.  The  approach  is based on the premise  that a  patient's  immune
response  to a  strongly  immunogenic,  hapten-modified  tumor  antigen  may  be
followed  by the  development  of an immune  response  to the  unmodified  tumor
antigen,  somewhat  analogous  to  the  phenomenon  of  drug-induced  autoimmune
disease.

The  Company's  initial  AC  Vaccine(TM),  M-Vax(TM),  is  currently  undergoing
physician-sponsored  human clinical trials based on an experimental  protocol at
TJU as an  outpatient,  post-surgical,  adjunct  therapy  for the  treatment  of
melanoma,  and is  believed by the  Company to be the first  therapeutic  cancer
vaccine to show a  substantial  increase in the survival  rate for patients with
stage 3 melanoma.  In such  ongoing  clinical  trials at TJU,  over 300 melanoma
patients have been treated post-surgically on an outpatient basis with M-Vax. In
62  patients  with  stage 3  melanoma  in  protocols  in  which  there  has been
sufficient  time  for  long-term  follow-up,  the  five-year  survival  rate  is
approximately  60%. This compares with the  historical and control group stage 3
survival rate of  approximately  20%, and the survival  rate for treatment  with
high dose alpha  interferon  of  approximately  32% in stage 3 patients whom the
Company  believes to be comparable to those treated with M-Vax. In patients over
50 years old treated with M-Vax, the five-year  survival rate was  approximately
71%. In the over 300 patients treated in studies, the Company believes that only
relatively  minor side effects,  such as mild transient  nausea and soreness and
swelling  at the  site  of the  application  of the  M-Vax  vaccine,  have  been
witnessed to date.

David Berd, M.D.,  Professor of Medicine and Clinical  Oncologist at TJU and the
inventor of the AC Vaccine technology, has conducted the ongoing clinical trials
at TJU pursuant to an FDA-approved, physician-sponsored Investigational New Drug
Application  ("IND").  The  Company  met  earlier  with the FDA to  discuss  the
clinical  results obtained with M-Vax, the use of such results in support of the
submission  of a  Company-sponsored  IND to the FDA,  and to review its proposed
development  plan.  Following such meeting,  the Company reviewed with the FDA a
proposed phase 3 protocol and the Company's plans to submit a  Company-sponsored
IND to support the pivotal  trial  program.  This IND has been  submitted to the
FDA,    is     currently     under     review,     and     addresses     product
characterization/manufacturing  issues  raised  by the FDA to  ensure  that  all
pivotal data will support a product  license  application.  No patients  will be
enrolled  in the  pivotal  trial  program  until  the  Company  and  the FDA are
satisfied  that all product  issues are resolved.  Depending upon the results of
such clinical trials, it is the Company's  intention to use the results of these
Company-sponsored  clinical  trials along with the results of the clinical trial
conducted  at TJU,  as the basis for the  filing of an  application  for the FDA
approval  to market  M-Vax.  The  Company  also may pursue a similar  regulatory
approval and commercialization  strategy for M-Vax in Australia,  Canada, Mexico
and certain other
- --------------------------------------------------------------------------------



                                       3
<PAGE>

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

countries through corporate partnering strategies, although such strategies have
not yet been finalized or initiated.  Denial of any regulatory  approvals or any
significant  delays in obtaining  any of the same would have a material  adverse
effect on the Company.

The Company also believes that the AC Vaccine  technology may have  applications
in the treatment of other cancers, which may include ovarian,  breast, prostate,
lung and colorectal  cancers and acute  myelogenous  leukemia (AML). The Company
intends  to fund  the  preclinical  and  initial  clinical  development  of this
technology for at least some of these indications.  Accordingly,  in addition to
continuing  the  clinical  work on M-Vax,  the Company has also  entered  into a
sponsored  research agreement with TJU relating to the development of additional
immunotherapies based on the AC Vaccine technology.  For example, the Company is
treating  post-surgical  stage 3 patients  in its Phase I/II  clinical  trial of
O-Vax(TM),  its AC Vaccine for ovarian cancer.  This trial is being conducted at
TJU under the  direction  of Dr.  David  Berd and has  already  shown a positive
immune response, as measured by a delayed type  hypersensitivity  (DTH) test, in
the first seven of seven patients treated.  The Company also plans to initiate a
similar Phase I/II clinical  trial of C-Vax(TM),  its AC Vaccine for  colorectal
cancer, within the next year.

In connection with the Company's strategy to acquire,  develop and commercialize
other  potential  biotechnology  products  and  technologies,  the  Company  has
licensed from Rutgers University and the University of Medicine and Dentistry of
New Jersey (collectively,  "Rutgers"), certain patent applications relating to a
series of  topoisomerase  inhibitor  compounds  for the  potential  treatment of
cancer and  infectious  diseases (the "Rutgers  License").  The Company also has
licensed from The Texas A&M  University  System  ("Texas  A&M"),  an issued U.S.
patent  and  certain  patent   applications   relating  to  a  series  of  novel
anti-estrogen  compounds for the  potential  treatment of cancer (the "Texas A&M
License").  Pursuant to the Rutgers License and the Texas A&M License (and under
its related sponsored  research  agreements with each of Rutgers and Texas A&M),
the  Company  intends  to  expend  substantial  resources  on the  research  and
development of these compounds.

In order to contain  costs,  the Company may continue to use sponsored  research
agreements  and  contract   research   organizations  to  help  it  develop  its
technologies. At the appropriate time the Company may seek corporate partners to
provide the necessary  resources and expertise for clinical  development  and to
manufacture,  market and distribute products. In addition,  the Company may seek
to explore the acquisition and subsequent  development and  commercialization of
additional  commercially  promising  immunotherapy,  chemotherapy  and  adjuvant
technologies. No assurance can be given that the Company will have the requisite
resources or that any such projects will be identified on terms favorable to the
Company, if at all.

The Company may seek to explore the acquisition  and subsequent  development and
commercialization  of  additional   commercially  promising   immunotherapy  and
adjuvant technologies.  No assurance can be given that the Company will have the
requisite  resources  or that  any such  projects  will be  identified  on terms
favorable to the Company, if at all.

The Company was incorporated in the State of New York on January 12, 1990, under
the name Nehoc, Inc. On May 29, 1992, it changed its name to Appex Technologies,
Inc. On October 22,  1992,  the Company  merged into Walden  Laboratories,  Inc.
("Walden"),  a Delaware  corporation,  which was  incorporated  on September 18,
1992.  On December  27,  1995,  Walden  sold its former  leading  product  under
development,   an  over-the-counter   nutritional   dietary,   medicinal  and/or
elixorative  food  supplement  or drug  and  related  patents  and  intellectual
property  to a  subsidiary  of  Interneuron  Pharmaceuticals,  Inc.  The Company
changed its name from Walden  Laboratories,  Inc., to AVAX  Technologies,  Inc.,
effective March 26, 1996.

The Company's principal  executive office is located at 4520 Main Street,  Suite
930, Kansas City,  Missouri 64111. Its telephone number at that address is (816)
960-1333.

AVAX(TM), AC Vaccine(TM),  M-Vax(TM),  O-Vax(TM) and C-Vax(TM) are trademarks of
the Company. This Prospectus also includes trademarks of other companies.

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


                                       4

<PAGE>

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

                                OFFERING SUMMARY

   
Common Stock Outstanding
  as of May 5, 1998:           4,923,570  shares  of  Common  Stock,   including
                               1,080,898 currently  outstanding shares of Common
                               Stock    directly    held    by    the    Selling
                               Securityholders.(1)

Common Stock Offered
  by Selling Securityholders:  6,080,830 shares of Common Stock.
    

Risk Factors:                  The  securities  offered  hereby  involve  a high
                               degree of risk. See "Risk Factors."

Nasdaq SmallCap
  Market Symbol:               AVXT

Use of Proceeds:               The Company  will not receive any  proceeds  from
                               the sale of shares of Common  Stock.  The Company
                               is not expected to receive any proceeds  from the
                               exercise  of the  Placement  Warrants  since  the
                               Placement Warrants may be exercised pursuant to a
                               cashless  exercise  provision.  In the event that
                               the  Placement  Warrants are  exercised for cash,
                               the Company intends to use such net cash proceeds
                               (after  estimated   offering   expenses  of  this
                               Offering of  approximately  $620,000) for general
                               working capital purposes.  Proceeds, if any, from
                               the  exercise  for  cash  of  all  the  Placement
                               Warrants,  before deduction of estimated expenses
                               of  this   Offering,   would   be   approximately
                               $160,000.  Whether, how and to what extent any of
                               the Placement  Warrants  will be  exercised,  and
                               whether the Placement  Warrants are exercised for
                               cash or not,  cannot be predicted by the Company.
                               See "Use of  Proceeds,"  "Certain  Transactions,"
                               "Selling  Securityholders"  and  "Description  of
                               Securities."


- ----------

   

     (1) Does not include (i)  4,984,595  shares of Common Stock  issuable  upon
     conversion  of currently  outstanding  shares of Series B Preferred  Stock,
     (ii) 704,814  shares of Common Stock  issuable  upon (a) exercise of Bridge
     Placement  Warrants and (b) conversion of Series B Preferred Stock issuable
     upon exercise of Series B Placement Warrants, (iii) 60,000 shares of Common
     Stock  issuable  upon  exercise of  outstanding  stock  options half of the
     options at an exercise price of $1.20 and the other half at $4.00 per share
     under the Company's  1992 Stock Option Plan,  (iv) 377,500 shares of Common
     Stock  reserved for issuance of future  options  under the  Company's  1992
     Stock  Option  Plan,  (v)  1,214,516  shares of Common  Stock  reserved for
     issuance  pursuant  to the  employment  arrangements  among the Company and
     certain of its full-time  employees,  officers,  directors and consultants,
     and (vi)  approximately  629,875  shares  of  Common  Stock  issuable  upon
     exercise  of other  warrants  to  purchase  shares  of  Common  Stock.  See
     "Executive Compensation" and "Description of Securities."
- --------------------------------------------------------------------------------
    




                                       5

<PAGE>

                            SUMMARY OF FINANCIAL DATA

The following table presents certain summary  historical  financial  information
derived from the financial  statements of the Company.  The summary is qualified
in its  entirety  by,  and  should be read in  conjunction  with,  "Management's
Discussion and Analysis of Financial Condition and Plan of Operations",  and the
Financial Statements of the Company included elsewhere in this Prospectus.

   

<TABLE>
<CAPTION>
                                                                Year Ended December 31,               Three Months Ended March 31,
                                                                 1996                1997               1997                 1998
                                                             -----------          -----------       -----------          -----------
                                                                                                    (Unaudited)          (Unaudited)
                                                                                                    -----------          -----------
<S>                                                         <C>                 <C>                 <C>                 <C>         
Statement of Operations Data:
Total operating loss ...............................        $(1,992,386)        $(5,172,983)        $(1,202,282)        $(1,608,016)
Net loss ...........................................         (1,536,842)         (4,266,125)           (962,165)         (1,400,306)
Net loss attributable to common
      stockholders .................................         (2,668,586)         (4,266,125)           (962,165)         (1,400,306)
Net loss per common share (1) ......................               (.84)              (1.14)               (.28)               (.30)
Weighted average number of shares 
      outstanding ..................................          3,182,058           3,750,440           3,379,450           4,725,221 
</TABLE>                                            


<TABLE>
<CAPTION>
                                              December 31, 1997      March 31, 1998
                                              -----------------      --------------

<S>                                              <C>                  <C>        
Balance Sheet Data:
Cash and cash equivalents ..............         $ 6,820,884          $ 3,388,303
Marketable securities ..................           9,102,028           11,264,405
Total current assets ...................          17,277,841           14,764,016
Total assets ...........................          17,354,833           14,848,173
Amount payable to preferred 
     stockholders ......................           1,150,200                   --
Amount payable to former officer .......              49,800                   --
Total current liabilities ..............           1,553,726              380,096
Deficit accumulated during development
      stage ............................          (7,520,147)          (8,920,453)
Stockholders' equity ...................          15,801,107           14,468,077 
</TABLE>


- ----------
(1)  See Note 1 to Financial  Statements for an explanation of the determination
     of shares used in computing net income (loss) per common share.
    


                                       6

<PAGE>

                                  RISK FACTORS

An investment in the shares of Common Stock offered hereby is highly speculative
in nature, involves a high degree of risk and should not be purchased by persons
who cannot afford a loss of their entire investment.  Each prospective  investor
should consider  carefully the risks inherent in and affecting both the business
of the  Company  and the  value of the  Common  Stock  and  speculative  factors
including,  without  limitation,  the following  risk factors,  as well as other
information  contained  elsewhere in this Prospectus before making an investment
in the Common Stock.

HISTORY  OF  OPERATING  LOSSES;  ACCUMULATED  DEFICIT;   UNCERTAINTY  OF  FUTURE
PROFITABILITY

   
The Company has incurred substantial operating losses since its inception. As of
March 31, 1998, the Company's accumulated deficit was approximately  $8,920,453.
The Company expects to incur  significant  increasing  operating losses over the
next  several  years,  primarily  due  to the  expansion  of  its  research  and
development  programs,  including  clinical  trials for  M-Vax(TM) ,  O-Vax(TM),
C-Vax(TM) and  pre-clinical  studies and clinical trials for other products that
it may  acquire or  develop.  The  Company's  ability  to achieve  profitability
depends  upon,  among  other  things,  its ability to develop  products,  obtain
regulatory  approval for its proposed  products,  and enter into  agreements for
product development, manufacturing and commercialization.  The Company's M-Vax ,
O-Vax and C-Vax products do not currently  generate revenue and the Company does
not expect to achieve  revenues from these or other products for the foreseeable
future.  Moreover,  there can be no assurance that the Company will ever achieve
significant  revenues or profitable  operations  from the sale of M-Vax,  O-Vax,
C-Vax, or any other products that it may develop.
    

NEED FOR ADDITIONAL FINANCING; ISSUANCE OF SECURITIES; FUTURE DILUTION

In the  future,  the Company may require  substantial  additional  financing  to
continue research, undertake product development and to pursue the manufacturing
and marketing of any products that it may develop.  The Company anticipates that
further  funds  may be  raised  through  additional  debt or  equity  financings
conducted by the Company, or through collaborative ventures entered into between
the Company and potential corporate partners. However, there can be no assurance
that any such offering will be consummated or that the Company will otherwise be
able to obtain additional financing or that such financing, if available, can be
obtained on terms favorable or acceptable to the Company.  If such offerings are
not consummated or additional financing is not otherwise available,  the Company
will be required  to modify its  business  development  plans or reduce or cease
certain or all of its operations.

While the Company may seek to enter into  collaborative  ventures with corporate
sponsors to fund some or all of its research and development activities, as well
as to manufacture or market any products  which may be  successfully  developed,
the  Company  currently  does  not have any  such  arrangements  with  corporate
sponsors,  and there can be no assurance  that the Company will be able to enter
into such ventures on favorable or acceptable terms, if at all. In addition,  no
assurance  can be given that the Company  will be able to complete a  subsequent
public offering or private  placement of its securities.  Failure by the Company
to enter into such  collaborative  ventures or to receive  additional funding to
complete its proposed  product  development  programs  either  through a private
placement  or a public  offering  could  have a material  adverse  effect on the
Company.  In the event that the Company  obtains any  additional  funding,  such
financings  may have a dilutive  effect on the holders of the Common Stock.  See
"Risk  Factors--Dependence  on  Third  Parties  for  Additional  Funds  and  for
Manufacturing, Marketing and Selling."

In addition, the Company currently has an employee stock option plan under which
its officers and directors will be eligible to receive stock options exercisable
for Common Stock at exercise  prices which may be lower than the current  market
price of the Common Stock. Similarly, under employment arrangements with certain
full-time  employees,  officers,  directors and consultants of the Company,  the
Company has granted such employees,  officers, directors and consultants options
for Common Stock at exercise prices that may be lower than the prevailing market
price of the Common Stock from time to time.  Such stock option grants under the
employee  stock option plan if any, and to certain of the  full-time  employees,
officers,  directors and consultants of the Company, may dilute the value of the
Common Stock. See "Management" and "Description of Securities--1992 Stock Option
Plan; Other Options."



                                       7

<PAGE>

DEVELOPMENT STAGE COMPANY

Although  the Company  was  organized  in January  1990,  it has only  conducted
limited  research  activities,  principally  through its  license  and  research
agreements  with  TJU,  Rutgers  and  Texas  A&M,  and  has  not  generated  any
significant revenues to date from operations.  Accordingly,  the Company must be
evaluated in light of the  expenses,  delays,  uncertainties  and  complications
typically encountered by newly established biopharmaceutical businesses, many of
which uncertainties and complications may be beyond the Company's control. These
include,  but are not limited  to,  unanticipated  problems  relating to product
development,  testing,  regulatory  compliance,  manufacturing,   marketing  and
competition,   and  additional  costs  and  expenses  that  may  exceed  current
estimates.  There can be no assurance that the Company will successfully develop
and commercialize any products, generate any revenues or ever achieve profitable
operations. See "Business."

TECHNOLOGICAL UNCERTAINTY AND EARLY STAGE OF PRODUCT DEVELOPMENT

   
The  technologies  and products which the Company  intends to develop are in the
early stages of research and development,  require significant further research,
development and testing and are subject to the risks of failure  inherent in the
development of products based on innovative or novel  technologies.  These risks
include,  but  are  not  limited  to,  the  possibility  that  any or all of the
Company's proposed products will be found to be ineffective or unsafe,  that the
products once developed,  although  effective,  are uneconomical to market, that
third parties hold  proprietary  rights that preclude the Company from marketing
such products or that third parties market a superior or equivalent  product and
that the Company will be unable to secure a meaningful  patent position for such
products.  See "Uncertainty Regarding Patents and Proprietary Rights; TJU Patent
Re-issuance  Application."  The  results of initial  pre-clinical  and  clinical
testing of the Company's  current and proposed  products under  development  are
neither necessarily  predictive of results that will be obtained from subsequent
or more extensive  pre-clinical and clinical testing nor necessarily  acceptable
to the United States Food and Drug  Administration  (the "FDA") or other similar
agencies to support applications for marketing permits.
    

The  Company's  agreements  with  (i)  TJU,  its  licensor  for  the AC  Vaccine
technology,   (ii)   Rutgers,   its   licensor  for  certain   anti-cancer   and
anti-infective  technology  and  (iii)  Texas  A&M,  its  licensor  for  certain
anti-cancer  technology,  do not contain any representations by the licensors as
to the safety or efficacy of the inventions or discoveries covered thereby.  The
Company is unable to predict whether the research and development  activities it
is funding  will result in any  commercially  viable  products or  applications.
Further,  due to the extended testing required before marketing clearance can be
obtained  from the FDA or other  similar  agencies,  the  Company is not able to
predict with any certainty,  when, if ever, it will be able to commercialize any
of its proposed products.

The market for biotechnology in general, and for cancer  immunotherapies such as
the AC Vaccine technology and other possible future products, in particular, are
characterized by rapidly changing  technology,  evolving industry  standards and
frequent new product  introductions.  The Company's  future  success will depend
upon its  ability to develop  and  commercialize  its  existing  product  and to
develop  new  products.  There  can  be  no  assurance  that  the  Company  will
successfully  complete the development of its existing  product or of any future
product or that the Company's  current or future  products  will achieve  market
acceptance.  Any delay or failure of M-Vax,  O-Vax, C-Vax, or any future product
which the Company may develop,  in achieving market  acceptance would materially
and  adversely  affect the  Company's  business.  In  addition,  there can be no
assurance that products or technologies  developed by others will not materially
render the Company's existing or future products or technologies non-competitive
or obsolete.

This Prospectus includes estimates by the Company of the number of patients with
a particular type of cancer or other  diseases,  the number of patients who were
administered  a  particular  vaccine  or drug and the  number  of  patients  who
received or might have been candidates for a particular type of treatment. There
can be no assurance  that such estimates  accurately  reflect the true market or
the extent to which any of the Company's  products,  if successfully  developed,
will  actually  be used by  patients.  Furthermore,  even if patient use occurs,
there can be no assurance that the Company's sales of its products for such uses
will be  profitable.  Failure of the  Company to  successfully  develop,  obtain
regulatory  approval  for,  introduce and market M-Vax,  O-Vax,  C-Vax,  and any
possible future products would have a material adverse effect on the Company.



                                       8

<PAGE>

GOVERNMENT REGULATION; NO ASSURANCE OF PRODUCT APPROVAL

The proposed products of the Company will be subject to very stringent  federal,
state and local  government  regulations,  including,  without  limitation,  the
Federal  Food,  Drug and  Cosmetic  Act,  and its state and local  counterparts.
Similar  regulatory  frameworks  exist in other  countries where the Company may
consider  marketing its products.  To date, TJU and Dr. David Berd, the inventor
of the AC Vaccine technology,  have conducted the ongoing clinical trials at TJU
pursuant  to  an  FDA-approved  physician  sponsored  Investigational  New  Drug
Application  ("IND").  The  Company  met  earlier  with the FDA to  discuss  the
clinical  results obtained with M-Vax, the use of such results in support of the
submission  of a  Company-sponsored  IND to the FDA,  and to review its proposed
development  program,  which includes Phase III clinical trials for M-Vax. Prior
to marketing M-Vax,  O-Vax, C-Vax, or any other possible product the Company may
develop, such product must undergo an extensive regulatory approval process. Any
denials or delays in  obtaining  requisite  approvals  would be likely to have a
material adverse effect on the Company.

   
The regulatory process includes  extensive  pre-clinical and clinical testing of
any product to  establish  its safety and  efficacy.  This testing can take many
years and require the expenditure of substantial capital and other resources. In
the U.S., clinical trials are stringently  regulated by the FDA, and the FDA may
suspend  clinical  trials at any time if it  determines  that patients are being
exposed to an unreasonable health risk, or for certain other reasons.  Delays or
denials of marketing approval are encountered regularly due to the submission of
unacceptable or incomplete data as deemed by the FDA or other similar regulatory
agency,  or due to regulatory  policy for product  approvals.  In addition,  new
government regulations may be established that could delay or prevent regulatory
approval  of the  Company's  products  under  development.  These  delays may be
encountered both domestically and abroad.  There is no assurance that even after
clinical  testing,  regulatory  approval  will ever be obtained.  If  regulatory
approval is obtained,  the uses for which any  products may be marketed  will be
limited  to  specific  indications.  Following  regulatory  approval,  if any, a
marketed product and its manufacturer are subject to continual regulatory review
and periodic  inspections.  In the U.S., the Company would be required to comply
with FDA requirements for manufacturing,  labeling,  advertising, record keeping
and reporting of adverse  experiences and other  information.  In addition,  the
Company  would be  required  to  comply  with  federal  and  state  health  care
anti-kickback  laws and other  health care fraud and abuse laws that  pertain to
the marketing of pharmaceuticals. Failure to comply with regulatory requirements
could subject the Company to  administrative  or judicial  enforcement  actions,
including but not limited to product  seizures,  injunctions,  civil  penalties,
criminal prosecution, refusals to approve new products or withdrawal of existing
approvals,  as well as increased product liability exposure,  any of which could
have a material adverse affect on the Company.  Development and marketing of the
Company's  products  outside  the U.S.  will be subject  to  foreign  regulatory
requirements  governing clinical trials,  marketing approval,  manufacturing and
pricing.  Failure to comply with these  requirements could result in enforcement
actions or penalties or could delay  introduction  of the Company's  products in
certain countries.

Failure  of the  Company  to obtain  and  maintain  regulatory  approval  of its
proposed products,  processes or facilities would have a material adverse effect
on the business,  financial  condition and results of operations of the Company.
In addition,  many academic  institutions  and companies  doing  research in the
field  of  cancer   immunotherapy   are  using  a  variety  of  approaches   and
technologies.  Any adverse results  obtained by such researchers in pre-clinical
or clinical studies, even if not directly or indirectly related to the Company's
potential  products  or  approaches,   could  adversely  affect  the  regulatory
environment for immunotherapy or other  biotechnology  products  generally,  and
possibly  lead to delays in the  approval  process for the  Company's  potential
products. See "Business--Government Regulation."
    

DEPENDENCE ON OTHERS FOR CLINICAL  DEVELOPMENT OF, AND REGULATORY APPROVALS FOR,
MANUFACTURING AND MARKETING OF PHARMACEUTICAL PRODUCTS

The  Company  anticipates  that  it  may  in  the  future  seek  to  enter  into
collaborative agreements with pharmaceutical,  or other biotechnology companies,
for the development of, clinical testing of, seeking of regulatory approval for,
and manufacturing,  marketing and commercialization of, certain of its products.
The  Company  may in the future  grant to its  collaborative  partners,  if any,
rights to license and commercialize any pharmaceutical  products developed under
these  collaborative  agreements  and such  rights  would  limit  the  Company's
flexibility  in  considering  alternatives  for  the  commercialization  of such
products.  Under such  agreements,  the Company  may rely on such  collaborative
partners to conduct research  efforts and clinical trials on, obtain  regulatory
approvals for,  manufacture,  market and commercialize  certain of the Company's
products.  Although the Company believes that such collaborative  partners might
have an 


                                       9

<PAGE>

economic motivation to commercialize the pharmaceutical  products which they may
license,  the  amount  and  timing  of  resources  devoted  to these  activities
generally will be controlled by each such  individual  partner.  There can be no
assurance that the Company will be successful in establishing any  collaborative
arrangements,  or that, if established,  such future partners will be successful
in  commercializing  products or that the Company will derive any revenues  from
such  arrangements.  Although the Company  intends to pursue such  collaborative
arrangements in the future, there are no specific arrangements, proposals, plans
or understandings with respect to any such collaborative arrangements.

DEPENDENCE  ON  THIRD  PARTIES  FOR  ADDITIONAL  FUNDS  AND  FOR  MANUFACTURING,
MARKETING AND SELLING

The Company  currently does not have the resources to commercially  manufacture,
directly market or sell M-Vax,  O-Vax,  C-Vax, or any products it may develop in
the future.  Accordingly,  the Company may be dependent on corporate partners or
other  entities for, and may have only limited  control over,  commercial  scale
manufacturing,  marketing  and selling of its  products.  The  inability  of the
Company to acquire such third party manufacturing,  distribution,  marketing and
selling arrangements for the Company's anticipated products will have a material
adverse  effect on the Company's  business.  There can be no assurance  that the
Company  will be able to enter  into  any  arrangements  for the  manufacturing,
marketing  and selling of its  products.  While the Company is in the process of
establishing  commercial  scale  manufacturing  facilities,  such  endeavor will
require  substantial  additional  funds, the hiring and retention of significant
additional  personnel and compliance  with extensive  regulations  applicable to
such a facility.  There can be no  assurance  that the  Company  will be able to
successfully  establish  such a facility,  hire such  personnel or  successfully
manufacture     products    for    sale    at    competitive     prices.     See
"Business--Manufacturing and Marketing."

DEPENDENCE ON LICENSES AND SPONSORED RESEARCH AGREEMENTS

   
The  Company  relies  heavily  on third  parties  for a  variety  of  functions,
including certain functions relating to research and development.  As of May 11,
1998, the Company had only seven  full-time  employees.  The Company is party to
several license and research  agreements which place substantial  responsibility
on the Company's licensors for research and clinical development of its products
and technologies.
    

In particular, the Company is dependent upon the TJU License as the basis of its
proprietary AC Vaccine  technology  and is dependent  upon a sponsored  research
agreement with TJU for research and development efforts in connection therewith.
Pursuant to the TJU License, the Company is obligated to pay an up-front license
fee, to use due diligence in developing  and bringing  products to market and to
make certain payments upon the achievement of certain milestones. The Company is
also  obligated  to make  royalty  payments  on the sales,  if any,  of products
resulting from such licensed  technology  and, is  responsible  for the costs of
filing and prosecuting patent  applications and maintaining  issued patents.  In
addition,  the Company is required to invest a minimum amount per year in the AC
Vaccine  technology  as well  as  sponsored  research  at TJU.  The  Company  is
similarly  dependent upon the Rutgers  License and Texas A&M License for certain
of its technology, and has financial and other obligations thereunder (and under
its related  sponsored  research  agreements with each of Rutgers and Texas A&M)
which are similar to those under the TJU agreements.

As the Company  currently  does not have  laboratory  facilities,  the Company's
research and development activities are intended to be conducted by universities
or other institutions  pursuant to sponsored research agreements.  The sponsored
research  agreement  entered  into by the  Company,  TJU and Dr. Berd  generally
requires periodic payments by the Company to TJU on a quarterly basis. There are
similar types of obligations under the Rutgers License and Texas A&M License.

If the Company does not meet its financial, development, or other obligations in
a timely  manner  under its license  agreements  or related  sponsored  research
agreements,  the Company could lose the rights to its proprietary  technology or
the right to have its licensors and others conduct its research and  development
efforts,  any of which could have a material adverse effect on the Company.  TJU
has the right to terminate the R&D  agreement on 30 days'  written  notice if it
becomes unable for any reason to complete the Study.



                                       10

<PAGE>

   
UNCERTAINTY  REGARDING PATENTS AND PROPRIETARY  RIGHTS;  TJU PATENT  RE-ISSUANCE
APPLICATION
    

The  biotechnology  industry  places  importance  on obtaining  patent and trade
secret   protection  for  new  technologies,   products  and  processes.   Also,
particularly in the case of biological  therapies,  additional protection may be
afforded by the  regulatory  approval  process.  The success of the Company will
depend  in  substantial  part on its  ability,  on the  ability  of its  current
licensors  and on the  ability of its  potential  future  licensors,  if any, to
obtain patents,  defend such patents,  maintain trade secrets, obtain regulatory
approvals and operate without  infringing upon the proprietary rights of others,
both in the United States and in foreign countries. The patent position of firms
relying upon  biotechnology  is highly  uncertain and involves complex legal and
factual questions.  To date there has emerged no consistent policy regarding the
breadth of claims allowed in  biotechnology  patents or the degree of protection
afforded under such patents.

More specifically, the Company relies on TJU's issued patent for its proprietary
patent rights in and to the AC Vaccine technology and may rely on certain United
States patents and pending  patent  applications,  as well as a pending  foreign
Patent  Cooperation Treaty ("PCT")  application,  relating to various aspects of
its  present and future  products  and  processes.  The patent  application  and
issuance  process  can be  expected  to take  several  years  and  could  entail
considerable  expense to the Company,  as it may be  responsible  for such costs
under the terms of any  technology  agreements.  There can be no assurance  that
patents will issue as a result of any  applications or that existing patents and
any patents  resulting from such  applications,  will be  sufficiently  broad to
afford  protection  against  competitors with similar  technology.  In addition,
there can be no assurance that any issued  patents will be enforceable  and will
not be subject to  reexamination  or reissue,  or  challenged,  invalidated,  or
circumvented.  There can be no assurance that the rights granted thereunder will
provide  competitive  advantages to the Company.  The commercial  success of the
Company  will also  depend  upon  avoiding  infringement  of  patents  issued to
competitors.  A United States patent  application is maintained under conditions
of  confidentiality  while the  application  is pending,  so the Company  cannot
determine the inventions being claimed in pending patent  applications  filed by
third  parties.  As a result,  the Company cannot be certain that its scientists
were  the  first  to  make   inventions   covered  by  its  patents  and  patent
applications.

In the  event a third  party  has  filed a  patent  application  relating  to an
invention claimed in a Company patent  application,  the Company or its licensor
may be required  to  participate  in an  interference  proceeding  in the United
States Patent and Trademark Office to determine priority of the invention, which
could result in substantial  uncertainties and cost for the Company, even if the
eventual  outcome is favorable to the Company.  An adverse outcome could subject
the Company to significant  liabilities to third parties and require the Company
to license  disputed rights from third parties at an  undeterminable  cost or to
cease using the technology.  In addition to patent litigation and interferences,
a third party may at some time seek to have a patent of the  Company  reexamined
in the Patent  Office on the basis of prior art. The  Company,  or a licensor of
the Company, may also at some time seek reexamination,  or reissue, of a Company
patent.

   
The Company has recently submitted an application for reissue for the purpose of
strengthening  the TJU patent in light of a prior art reference which may have a
material  adverse impact on the patent.  The prior art reference  relates to the
publication,  slightly more than one year prior to the filing of the patent,  of
an abstract  for an oral  presentation  given by the  inventor of the AC Vaccine
technology.  Although the Company  believes that there is a sound basis for this
reissue application, there can be no assurance that a patent will issue from the
application,  or that  any  such  patent  will be  enforceable  and  will not be
challenged, invalidated, or circumvented. In connection with the application for
re-issuance,  the  Company  may seek to have the  patent's  claims  modified  to
reconcile  such claims with the prior art  reference.  There can be no assurance
that  the  validity  or   enforceability   of  the  Company's  patents  and  its
applications,  if  issued,  would be upheld  by a court.  In the  absence  of an
enforceable patent, the Company may rely upon significant regulatory barriers to
competition.
    

While no patent that could be potentially infringed by manufacture,  use or sale
of the Company's  product  candidates  has come to the attention of the Company,
the Company's product candidates are still in the development stage, and neither
their  formulations nor their method of manufacture  have been finalized.  Thus,
there can be no assurance  that the  manufacture,  use or sale of the  Company's
product candidates will not infringe patent rights of others. The Company may be
unable to avoid infringement of any such patents and may have to seek a license,
defend an  infringement  action,  or  challenge  the  validity of the patents in
court.  There  can be no  assurance  that a  license  will be  available  to the
Company, if at all, upon terms and conditions  acceptable to the Company or that
the Company will prevail in any patent  litigation.  Litigation may be necessary
to defend or enforce the Company's patent and license rights or to determine the
scope and 


                                       11

<PAGE>

validity of others' proprietary rights. Defense and enforcement of patent claims
can be  expensive  and time  consuming,  even in those  instances  in which  the
outcome  is  favorable  to the  Company,  and can  result  in the  diversion  of
substantial  resources  from the  Company's  other  activities.  There can be no
assurance  that the  Company  will have  sufficient  resources  to  pursue  such
litigation.  If the Company does not obtain a license under any such patents, is
found liable for infringement, or is not able to have them declared invalid, the
Company may be liable for significant money damages,  may encounter  significant
delays in bringing products to market, or may be precluded from participating in
the manufacture, use or sale of products or methods of treatment covered by such
patents,  any of which  could have a material  adverse  effect on the  Company's
business,   results  of  operation  and  financial  condition.  See  "Business--
Proprietary Technology."

In its product  development  activities,  the Company  relies  substantially  on
certain  technologies  which are not patentable or proprietary and are therefore
available  to the  Company's  competitors.  The  Company  also relies on certain
proprietary  trade secrets and know-how which are not patentable.  Further,  the
Company may also rely upon certain  regulatory  barriers to prevent  competitors
from using the Company's  technologies.  Although the Company has taken steps to
protect its  unpatented  trade secrets and know-how,  in part through the use of
confidentiality  agreements  with its employees,  consultants and certain of its
contractors,  there  can be no  assurance  that  these  agreements  will  not be
breached,  that the Company would have adequate  remedies for any breach or that
the Company's trade secrets will not otherwise  become known or be independently
developed or discovered by competitors.  If the Company's employees,  scientific
consultants or collaborators develop inventions or processes  independently that
may be applicable to the Company's product candidates,  disputes may arise about
ownership of propriety rights to those inventions and processes. Such inventions
and processes will not necessarily become the Company's property, but may remain
the  property  of  those  persons  or their  employers.  Protracted  and  costly
litigation  could  be  necessary  to  enforce  and  determine  the  scope of the
Company's  proprietary  rights.  Failure to obtain or maintain  patent and trade
secret protection,  for any reason,  could have a material adverse effect on the
Company.  Certain of the Company's patents are directed to inventions  developed
within academic  institutions (from which the Company earlier acquired rights to
such patents) with funds from United States government agencies.  As a result of
these  arrangements,  the United  States  government  may have rights in certain
inventions  developed  during the course of the performance of federally  funded
projects as required by law or agreements with the funding agency. Several bills
affecting  patent rights have been  introduced  in the United  States  Congress.
These bills address various aspects of patent law, including publication, patent
term,  re-examination,  subject  matter and  enforceability.  It is not  certain
whether  any of these  bills will be enacted  into law or what form new laws may
take.   Accordingly,   the  effect  of  legislative   change  on  the  Company's
intellectual property rights is uncertain.

CONDUCTING BUSINESS ABROAD

To the extent the  Company  conducts  business  outside  the United  States,  it
intends  to  do  so  through  licenses,  joint  ventures  or  other  contractual
arrangements for the development,  manufacturing  and marketing of its products.
No assurance  can be given that the Company  will be able to  establish  foreign
operations  successfully  through such a plan, or that foreign applications will
avoid  opposition  and be approved.  No assurance  can be given that the foreign
coverage  will be  available  or that the  manufacturing  and  marketing  of its
products  through such  licenses,  joint  ventures  other  arrangements  will be
commercially  successful.   The  Company  might  also  have  greater  difficulty
obtaining  proprietary  protection for its products and technologies outside the
United States and enforcing its rights in foreign courts.

For clinical  investigation and marketing outside the United States, the Company
also is subject to foreign  regulatory  requirements  governing  human  clinical
trials and marketing approval for drugs. The requirements  governing the conduct
of clinical trials, product licensing, pricing and reimbursement vary widely for
European  countries both within and outside the European  Union ("EU").  Outside
the United States,  the Company's ability to market a product is contingent upon
receiving a marketing  authorization from the appropriate  regulatory authority.
At  present,  foreign  marketing  authorizations  are  applied for at a national
level,  although with the EU certain  registration  procedures  are available to
companies  wishing to market their products in more than one EU member state. If
the regulatory authority is satisfied that adequate evidence of safety,  quality
and efficacy has been presented, a marketing  authorization will be granted. The
system for obtaining marketing  authorizations within the EU registration system
is a dual  one in  which  certain  products,  such  as  biotechnology  and  high
technology products and those containing new active substances, will have access
to a central regulatory system that provides registration  throughout the entire
EU. Other  products will be registered by national  authorities in individual EU
member  states,  operating  on a principle of mutual  recognition.  This foreign
regulatory approval process includes, at least, all of the risks associated with
FDA approval set forth above. The Company could 


                                       12

<PAGE>

possibly have greater  difficulty in obtaining any such approvals and also might
find it more difficult to protect its intellectual property abroad.

DEPENDENCE UPON KEY PERSONNEL AND CONSULTANTS

   
The Company is highly dependent upon its officers and directors,  as well as its
Scientific  Advisory Board members,  consultants and  collaborating  scientists.
Except  for its  seven  full-time  employees,  each of the  Company's  officers,
directors, advisors and consultants devotes only a portion of his or her time to
the  Company's   business  and  for  the  most  part  are  involved  with  other
substantially  full-time  activities.  The loss of certain of these individuals,
including,  without limitation,  Jeffrey M. Jonas, M.D., the Company's President
and Chief Executive Officer, could have a material adverse effect on the Company
unless the Company  could  promptly  hire  qualified  replacements.  The Company
maintains a key-man life insurance  policy on Dr. Jonas in the amount of only $3
million. In addition, several of the Company's full-time employees, officers and
consultants  have only  recently  joined the  Company.  Although the Company has
entered  into  letters  of  employment  with  many of its  full-time  employees,
officers and consultants,  such letters of employment do not contain  provisions
which would prevent any of them from resigning at any time. See "Management".
    

Competition  for qualified  employees  among  pharmaceutical  and  biotechnology
companies is intense,  and the loss of any of such  persons,  or an inability to
attract,  retain and motivate any additional highly skilled  employees  required
for the expansion of the  Company's  activities,  could have a material  adverse
effect on the Company.  There can be no assurance  that the Company will be able
to retain its existing  personnel or to attract additional  qualified  employees
and such failure likely would have a material adverse effect on the Company.

LACK OF MANUFACTURING FACILITIES

In order to successfully  commercialize its product candidates, the Company must
be able to manufacture its products in commercial quantities, in compliance with
regulatory  requirements,  at  acceptable  costs  and in a  timely  manner.  The
manufacture  of the types of  biopharmaceutical  products  that are likely to be
developed by the Company  present several risks and  difficulties.  For example,
the  manufacture  of M-Vax,  O-Vax,  C-Vax and other  compounds  the Company may
develop for use in the Company's current and future products and technologies is
complex,  can be difficult to scale-up  when large scale  production is required
and can be subject to delays,  inefficiencies  and poor or low yields of quality
products.  The Company may also be subject to risks relating to the expense,  or
unavailability of, products and compounds  manufactured or sold by third parties
which are required for use on a comparative basis in clinical trials and studies
for the Company's  products.  There can be no assurance that the Company will be
able  to  procure  such  products  and  compounds  at an  acceptable  cost or in
sufficient quantities without delays or other adverse effects upon the Company's
development programs.

The Company  currently has interim  manufacturing  capacity which it believes is
reasonably  adequate to support the  commencement  of the clinical  programs and
expects  to expand its  manufacturing  staff and  facilities,  to  establish  an
additional  facility or facilities  and to contract with third parties to assist
it with  production.  There can be no assurance that the Company will be able to
obtain from third party manufacturers  adequate supplies in a timely fashion for
commercialization,  or that  commercial  quantities  of any  such  products,  if
approved  for  marketing,  will be  available  from  contract  manufacturers  at
acceptable  costs.  In the  event  the  Company  proceeds  with  establishing  a
full-scale  commercial   manufacturing   facility,   the  Company  will  require
substantial  additional funds and will be required to hire and train significant
numbers of employees  and comply with the  extensive  regulations  applicable to
such a  facility.  There is no  assurance  that AVAX  will be able to  develop a
current Good Manufacturing  Practices ("cGMP") manufacturing facility sufficient
for  all  clinical  trials  or  commercial-scale  manufacturing.   The  cost  of
manufacturing  certain  products  may  make  them  prohibitively  expensive.  In
addition,  in order to successfully  commercialize its product  candidates,  the
Company may be required  to reduce the cost of  production,  and there can be no
assurance  that the Company will be able to do so. See  "Business--Manufacturing
and Marketing."

COMPETITION

The  Company's  proposed  cancer  immunotherapy  business  is  characterized  by
intensive  research efforts and intense  competition.  Many companies,  research
institutes,  hospitals  and  universities  are working to develop  products  and



                                       13

<PAGE>

processes in the  Company's  fields of  research.  Most of these  entities  have
substantially   greater   financial,   technical,   manufacturing,    marketing,
distribution  and other  resources  than the Company and include,  among others,
Schering  Plough  Corporation,  Chiron  Corporation,  Bristol-Myers  Squibb  and
Johnson & Johnson.  Certain of such  companies  have  experience in  undertaking
testing and  clinical  trials of new or improved  products  similar in nature to
that which the Company is  developing.  In addition,  certain  competitors  have
already begun  testing  similar  compounds or processes  and may introduce  such
products or  processes  before the Company.  Accordingly,  other  companies  may
succeed  in  developing  products  earlier  than  the  Company  or that are more
effective  than those  proposed to be developed by the Company.  Further,  it is
expected that competition in the Company's field will intensify. There can be no
assurance that the Company will be able to compete  successfully  in the future.
See "Business--Competition."

RISK OF PRODUCT LIABILITY

Should the  Company  develop  and market any  products,  the  marketing  of such
products,  through third-party arrangements or otherwise, may expose the Company
to product  liability  claims.  Though the  Company  presently  carries  product
liability insurance,  there can be no assurance that such insurance will protect
the Company against all claims of product liability. The Company may be required
to indemnify its licensor against certain product liability claims incurred as a
result of the products  developed by the Company.  The Company's  licensors have
not made, and are not expected to make, any  representations as to the safety or
efficacy of the  inventions  covered by the license or as to any products  which
may be made or used under rights granted therein or thereunder.  In addition, it
is possible  that  license and  collaborative  agreements  which the Company may
enter into in the future may also include similar insurance requirements.  There
can be no  assurance  that in the future  adequate  insurance  coverage  will be
available  in  sufficient  amounts or at a  reasonable  cost,  or that a product
liability  claim or  recall  would  not have a  material  adverse  effect on the
Company.

UNCERTAINTY OF PRODUCT PRICING AND REIMBURSEMENT; HEALTH CARE REFORM AND RELATED
MEASURES

The levels of revenues and profitability of pharmaceutical  and/or biotechnology
products  and  companies  may be affected by efforts of  governmental  and third
party  payors to  contain  or reduce the costs of health  care  through  various
means.  For example,  in certain foreign  markets,  pricing or  profitability of
prescription  pharmaceuticals  is subject to government  control.  In the United
States there have been, and the Company  expects that there will continue to be,
a number of federal and state proposals to implement similar government control.
The United States  Congress  continually  considers a number of legislative  and
regulatory reforms that may affect companies engaged in the health care industry
in the  United  States.  Pricing  constraints  on  the  Company's  products,  if
approved,  could have a material  adverse  effect on the  Company.  Although the
Company cannot predict  whether these  proposals will be adopted or what effects
such  proposals  may have on its  business,  the  existence and pendency of such
proposals  could have a material  adverse  effect on the Company in general.  In
addition, the Company's ability to commercialize potential pharmaceutical and/or
biotechnology  products  may be  adversely  affected  to the  extent  that  such
proposals have a material adverse effect on other companies that are prospective
collaborators with respect to any of the Company's product candidates.

In addition,  in the United States and elsewhere,  sales of medical products and
services  are  dependent in part on the  availability  of  reimbursement  to the
consumer  from third party  payors,  such as  government  and private  insurance
plans.  Third party payors are  increasingly  challenging the prices charged for
medical  products and services.  If the Company succeeds in bringing one or more
products to the market,  there can be no assurance  that these  products will be
considered  cost  effective  and  that  reimbursement  to the  consumer  will be
available or will be sufficient to allow the Company to sell their products on a
competitive  basis. See "Risk  Factors--Government  Regulation;  No Assurance of
Product Approval."

NO ASSURANCE OF  IDENTIFICATION  OF ADDITIONAL  PROJECTS;  CERTAIN  INTERLOCKING
RELATIONSHIPS; POTENTIAL CONFLICTS OF INTEREST

The Company  initially  intends to be engaged  primarily in the  development and
commercialization  of  the AC  Vaccine  technology,  as  well  as the  potential
anti-cancer  and  anti-infective  technology  licensed  pursuant  to the Rutgers
License and the potential anti-cancer  technology licensed pursuant to the Texas
A&M  License.  See  "Business."  From  time to time,  if and when the  Company's
resources  allow,  the  Company  may  explore  the  acquisition  and  subsequent
development and  commercialization  of additional  biomedical and pharmaceutical
products and technologies.  However,  there can be no assurance that the Company
will be able to identify any additional  products or  technologies  and, even if
suitable products



                                       14

<PAGE>

or technologies are identified,  there can be no assurance that the Company will
have  sufficient  resources to pursue any such products or  technologies  in the
foreseeable future.

Certain of the  directors  of the Company  are  officers  of  Paramount  Capital
Investments,  LLC. See "Management."  Paramount Capital  Investments,  LLC, is a
merchant bank specializing in biotechnology  companies. In the regular course of
its business,  Paramount Capital  Investments,  LLC,  identifies,  evaluates and
pursues  investment  opportunities  in biomedical and  pharmaceutical  products,
technologies and companies.  Generally, Delaware corporate law requires that any
transactions  between the Company  and any of its  affiliates  be on terms that,
when taken as a whole,  are  substantially  as favorable to the Company as those
then  reasonably  obtainable  from  a  person  who is  not  an  affiliate  in an
arms-length  transaction.  Nevertheless,  neither Paramount Capital Investments,
LLC,  nor  any  other  person  is  obligated   pursuant  to  any   agreement  or
understanding  with the Company to make any additional  products or technologies
available to the Company,  and there can be no assurance,  and purchasers of the
Common Stock should not expect, that any biomedical or pharmaceutical product or
technology identified by Paramount Capital Investments, LLC, or any other person
in the future will be made available to the Company. In addition, certain of the
officers,  directors,  consultants  and advisors to the Company may from time to
time  serve  as   officers,   directors,   consultants   or  advisors  to  other
biopharmaceutical  or  biotechnology  companies.  There can be no assurance that
such other  companies  will not in the future have  interests  in conflict  with
those of the Company.

CONTROL BY CURRENT OFFICERS, DIRECTORS AND PRINCIPAL STOCKHOLDERS

   
The  Company's   directors,   executive  officers  and  principal   stockholders
beneficially own  approximately  44% of the outstanding  shares of Common Stock.
Accordingly, the Company's executive officers, directors, principal stockholders
and certain of their affiliates have the ability to exert substantial  influence
over the  direction  and  policies of the Company  and, if they choose to act in
concert,  the election of the  Company's  Board of Directors  and the outcome of
issues submitted to the Company's stockholders. See "Principal Stockholders."
    

VOLATILITY OF STOCK PRICE

   
The market price of the Common  Stock like that of many other  development-stage
public  pharmaceutical  or  biotechnology  companies,  may be  highly  volatile.
Factors such as  announcements  of  technological  innovations or new commercial
products  by  the  Company  or  its   competitors,   disclosure  of  results  of
pre-clinical and clinical testing,  adverse reactions to products,  governmental
regulation and approvals,  developments in patent or other  proprietary  rights,
public or regulatory agency concerns as to the safety of any products  developed
by the Company and general  conditions  may have a significant or adverse effect
on the market price of the Common Stock.  Also,  the trading price of the Common
Stock may respond to quarterly variations in operating results, announcements of
innovations or new products by the Company or its  competitors  and other events
or factors, including, but not limited to, the sale or attempted sale of a large
amount of such securities into the market. In addition,  market fluctuations may
adversely  affect the market  prices of such  securities.  See  "Description  of
Securities."
    

POTENTIAL ADVERSE EFFECT OF SHARES ELIGIBLE FOR FUTURE SALE

   
As of May 5, 1998,  4,923,570 shares of Common Stock were issued and outstanding
of which the Company believes that,  other than those shares  registered in this
Offering,  only 1,487,822 shares of Common Stock are "restricted securities" and
under certain  circumstances may, in the future, be sold in compliance with Rule
144  under  the  Securities  Act of 1933 (the  "Act"),  unless  they are held by
"affiliates"  of the  Company  as that term is used under the Act.  In  general,
under Rule 144 as currently in effect,  subject to the  satisfaction  of certain
conditions  and certain  manner of sale and notice  requirements,  including the
requirement  that there is adequate  current public  information with respect to
the Company as  contemplated  by Rule 144, a person (or persons whose shares are
aggregated),  including persons who may be deemed an affiliate of the Company as
that term is defined under the Act, who beneficially  owned restricted shares of
Common Stock for at least one year is entitled to sell,  within any  three-month
period,  a number of shares  that does not exceed (i) the greater of one percent
of the total number of outstanding shares of the same class, or (ii) the average
weekly trading volume during the four calendar weeks  immediately  preceding the
sale.  A person who  presently  is not and who has not been an  affiliate of the
Company for at least three  months  immediately  preceding  the sale and who has
beneficially owned the shares of Common
    



                                       15

<PAGE>

Stock for at least two years is entitled  to sell such shares  under Rule 144(k)
without regard to the volume limitations described above.

   
In addition, the Company has issued and outstanding,  or issuable,  warrants and
options to purchase an aggregate of 2,937,476  shares of Common Stock (excluding
49,229 shares of Common Stock underlying Series B Placement  Warrants and Bridge
Placement  Warrants that are being  registered in this Offering).  Any employee,
officer or director of the Company who  acquired  his or her shares prior to the
effective date of the Registration  Statement at a time when the Company was not
subject  the  reporting  requirements  of Section 13 or 15(d) of the  Securities
Exchange Act of 1934 (the "Exchange  Act") or who holds vested options as of the
effective date of the Registration Statement, pursuant to a written compensatory
plan or contract is entitled to rely on the resale  provisions of Rule 701. Rule
701  permits  non-affiliates  to sell their Rule 701  shares  without  having to
comply with the public information,  holding period, volume limitation or notice
provisions  of Rule 144 and  permits  affiliates  to sell  their Rule 701 shares
without  having to comply with Rule 144's holding period  restrictions,  in each
case commencing 90 days after the effective date of the Registration Statement.

The Company also has  4,984,595  shares of Common  Stock that are issuable  upon
conversion of Series B Preferred Stock.  Certain of the stockholders and holders
of shares of Common Stock  issuable  upon  exercise of Series B Preferred  Stock
(including shares of Common Stock issuable upon conversion of shares of Series B
Preferred  Stock  issuable  upon exercise of Series B Placement  Warrants),  and
other warrants of the Company,  have certain  demand and piggyback  registration
rights. The Company's current Registration  Statement,  to which this Prospectus
relates,  pertains to the resale of up to  6,080,830  shares of Common Stock and
the Company may, in the future,  agree to register  other shares of Common Stock
held by  eligible  persons'  including  officers  of the  Company,  on Form  S-8
relating to shares of Common Stock issuable upon exercise of such persons' stock
options or warrants,  including, without limitation, under its 1992 Stock Option
Plan. See "Description of Securities--1992  Stock Option Plan", "Other Options",
"Warrants" and "Registration Rights".  Exercise of any registration rights could
involve substantial expense to the Company.
    

In addition,  the vesting  dates for the shares  issuable  upon  exercise of the
Company's  stock  options  are  also  subject  to  acceleration   under  certain
circumstances,  including certain changes in control of the Company,  subject to
certain exceptions.

Holders of the Company's  warrants and options are likely to exercise them when,
in all  likelihood,  the Company could obtain  additional  capital on terms more
favorable  than those  provided by warrants  and options.  Further,  while these
warrants and options are outstanding, the Company's ability to obtain additional
financing on favorable  terms may be affected  adversely by the presence of such
securities and the terms thereof. No prediction can be made as to the effect, if
any,  that the  availability  of such  shares  for sale will have on the  market
prices  that may be quoted  from  time to time on the  Nasdaq  Smallcap  Market.
Nevertheless,  the possibility that substantial  amounts of the Common Stock may
be sold in the public market may adversely  affect the prevailing  market prices
for the Common Stock and could impair the Company's  ability to raise capital in
the future through the sale of equity  securities.  Actual sales or the prospect
of  future  sales of  shares  of the  Common  Stock,  whether  such  shares  are
"restricted shares" under Rule 144, or are otherwise eligible for resale without
restriction, may have a depressive effect upon the price of the Common Stock and
the market therefor.

LIMITED PUBLIC MARKET; POSSIBLE VOLATILITY OF STOCK PRICE

The Common Stock is listed for quotation on the Nasdaq  SmallCap  Market.  There
can be no assurance  that there will be an active  trading market for the Common
Stock  during or after the  Offering.  The absence of an active  trading  market
would reduce the liquidity of an  investment in the Common Stock.  To the extent
that brokerage firms act as market makers, they may be a dominating influence in
any market that might develop, and the degree of participation by such firms may
significantly  affect the price and liquidity of the Common  Stock.  These firms
may discontinue  such activities at any time or from time to time. The prices at
which the Common Stock may be offered in the market will be  determined by these
firms and the  purchasers  and  sellers  of the Common  Stock,  based in part on
market factors,  and may not necessarily  relate to the Company's  assets,  book
value,  results of operations or other established and quantifiable  criteria of
value. The trading price of the Common Stock, including, without limitation, any
Common Stock to be offered by the Selling Shareholders, could be subject to wide
fluctuations  in  response  to  quarterly   variations  in  operating   results,
announcements of technological innovations or new products by the Company or its
competitors  and other  events or factors.  In  addition,



                                       16

<PAGE>

the stock market has experienced  volatility that has particularly  affected the
market  prices of equity  securities  of many  biotechnology  companies and that
often has been unrelated to the operating  performance of such companies.  These
broad market  fluctuations  may affect  adversely the market price of the Common
Stock. See "Plan of Distribution."

UNCERTAINTY OF LISTING ON NASDAQ SMALLCAP MARKET; MARKET ILLIQUIDITY

Although the Common Stock has been approved for initial listing and quotation on
the Nasdaq SmallCap Market, such market has recently adopted stricter continuing
listing criteria, which the Company is required to meet. Accordingly,  continued
inclusion  of the Common  Stock on the Nasdaq  SmallCap  Market  pursuant to the
recently  adopted  stricter  standards  requires  that: (i) the Company have net
tangible  assets of  $2,000,000,  or a market  capitalization  of $35 million or
more,  or net income in two of the three most  recent  fiscal  years of at least
$500,000;  (ii) the  Company's  public  float have a market value of at least $1
million and a public  float of at least  500,000  shares;  (iii) the minimum bid
price for the Common  Stock be at least $1.00 per share;  (iv) the Common  Stock
have at least two  active  market  makers  and be held of record by at least 300
shareholders  and  (v)  the  Company  adhere  to  certain  corporate  governance
provisions.  . For  purposes of  determining  compliance  with the public  float
requirements,  shares of stock held by officers,  directors  and  10%-or-greater
stockholders  are excluded.  There can be no assurance  that the Company and the
Common Stock will continue to satisfy the requirements for maintaining a listing
on the Nasdaq SmallCap Market.

If the Company is unable to satisfy the continuing  maintenance  requirements as
they may be in effect or  applied  from time to time,  the  Common  Stock may be
delisted from the Nasdaq SmallCap Market. In such event, trading, if any, in the
Common Stock would thereafter probably be conducted on the OTC Bulletin Board or
in the over-the-counter  market through the National Quotation Bureau (the "pink
sheets")  and the  Company  would  again be  required  to comply with the Nasdaq
SmallCap  Market's  initial  listing  criteria in order to have the Common Stock
re-approved for listing and quotation  thereon.  Consequently,  the liquidity of
the Common Stock could be impaired  materially  and  adversely,  not only in the
number of  securities  that can be bought  and sold at a given  price,  but also
through delays in the timing of transactions and reduction in security analysts'
and media  coverage of the  Company,  which could result in lower prices for the
Common Stock than might  otherwise be attained and could also result in a larger
spread between the bid and asked prices for the Common Stock.  See "Risks of Low
Price Stock;  Possible Effect of "Penny Stock" Rules on Liquidity for the Common
Stock."

RISKS OF LOW-PRICED  STOCK;  POSSIBLE EFFECT OF "PENNY STOCK" RULES ON LIQUIDITY
FOR THE COMMON STOCK

The Exchange Act requires additional disclosure relating to the market for penny
stocks in  connection  with trades in any stock  defined as a penny  stock.  The
Commission's  regulations  generally  define  a  penny  stock  to be any  equity
security  that has a market  price of less than  $5.00  per  share,  subject  to
certain  exceptions.  Such exceptions  include any equity security listed on the
Nasdaq SmallCap Market, subject to certain trade reporting requirements, and any
equity security issued by an issuer that has (i) net tangible assets of at least
$2 million,  if such issuer has been in  continuous  operation  for three years,
(ii) net  tangible  assets of at least $5  million,  if such  issuer has been in
continuous  operation for less than three years, or (iii) average annual revenue
of at least $6 million, if such issuer has been in continuous operation for less
than three years.  Though the Company  believes that it currently  meets the net
tangible  assets test,  there can be no assurance that the Company will meet the
requirements of the foregoing financial exceptions. Thus, if the price per share
of the Common  Stock were to be less than  $5.00 per share and the  Company  was
unable to continue to meet the  requirements  for listing on the Nasdaq SmallCap
Market,  failure to qualify under one of the foregoing  exceptions would require
delivery,  prior to any transaction in a penny stock,  of a disclosure  schedule
prepared by the  Commission  relating to the penny stock  market.  Disclosure is
also  required  to  be  made  about  sales  commissions   payable  to  both  the
broker-dealer and the registered  representative  and current quotations for the
securities.  Finally,  monthly  statements  are  required to be sent  disclosing
recent price information for the penny stock held in the account and information
on the limited  market in penny stocks.  In any event,  even if the Common Stock
were  exempt  from such  restrictions,  they  would  remain  subject  to Section
15(b)(6) of the  Exchange  Act,  which gives the  Commission  the  authority  to
prohibit any person that engages in unlawful  conduct while  participating  in a
distribution  of  penny  stock  from   associating   with  a  broker-dealer   or
participating  in a distribution  of penny stock,  if the Commission  finds that
such a restriction would be in the public interest.  Accordingly,  if the Common
Stock is subject to the rules on penny  stocks,  the market  liquidity  for such
securities  could be materially  and  adversely  affected.



                                       17

<PAGE>

In addition, if the Common Stock fails to meet the minimum market price, the net
tangible asset or the annual revenue tests set forth above, but is quoted on the
OTC Bulletin Board (as to which there can be no assurance),  then trading in the
Common Stock would be  regulated  pursuant to Rules  15-g-1  through  15-g-6 and
15-g-9  promulgated  under the  Exchange  Act for  non-National  Association  of
Securities   Dealers  Automotive   Quotation  System  and  non-exchange   listed
securities.  Under such rules,  broker-dealers  who recommend such securities to
persons other than established customers and "accredited  investors" must make a
special  written  suitability  determination  that the penny stock is a suitable
investment for the purchaser and receive the  purchaser's  written  agreement to
this transaction.  Securities are exempt from these rules if the market price of
the Common Stock is at least $5.00 per share.  Consequently,  such  Exchange Act
rules may affect the ability of  broker-dealers  to make a market in such shares
and may affect the ability of holders of Common  Stock to sell in the  secondary
market.

   
ANTI-TAKEOVER  EFFECTS OF PROVISIONS OF THE  CERTIFICATE  OF  INCORPORATION  AND
DELAWARE LAW

The Company's Articles of Incorporation,  as amended,  authorize the issuance of
up to 5,000,000  shares of preferred  stock,  par value $.01 per share, of which
300,000  shares are  authorized  for  issuance  as shares of Series B  Preferred
Stock,  of which  approximately  216,897 are issued and  outstanding as Series B
Preferred Stock or reserved for issuance upon the exercise of Series B Placement
Warrants as of May 5, 1998.  As of May 5, 1998,  the  Company's  Certificate  of
Incorporation authorizes the issuance of "blank check" preferred stock with such
designation,  rights and  preferences as may be determined  from time to time by
the Board of  Directors.  Accordingly,  the  Board of  Directors  is  empowered,
without  stockholder  approval,  to issue a new series of  preferred  stock with
dividend, liquidation,  conversion, voting or other rights which could adversely
affect the voting power or other rights of the holders of the Common  Stock.  In
the event of  issuance,  the new series of  preferred  stock could be  utilized,
under certain circumstances, as a method of discouraging, delaying or preventing
a change  in  control  of the  Company.  Although  the  Company  has no  present
intention to issue any  additional  shares of its  preferred  stock,  other than
those already  authorized for issuance upon exercise of the Placement  Warrants,
there can be no  assurance  that the Company  will not do so in the future.  See
"Description of Securities."
    

The  Company is subject to Section  203 of the  General  Corporation  Law of the
State of Delaware  which,  subject to certain  exceptions,  prohibits a Delaware
corporation  from  engaging  in any  business  combination  with any  interested
stockholder for a period of three years following the date that such stockholder
became an interested stockholder.  In general, Section 203 defines an interested
stockholder  as any  entity or  person  beneficially  owning  15% or more of the
outstanding  voting stock of the corporation and any entity or person affiliated
with or  controlling  or  controlled  by such  entity or person.  The  foregoing
provisions  could have the effect of  discouraging  others  from  making  tender
offers for the  Company's  shares and, as a  consequence,  they also may inhibit
fluctuations in the market price of the Company's  shares that could result from
actual or rumored takeover attempts. Such provisions also may have the effect of
preventing changes in the management of the Company.

POTENTIAL CONVERSION PRICE RESET OF SERIES B PREFERRED STOCK

In May and June 1996, the Company consummated an offering of units consisting of
shares of Series B  Preferred  Stock and Common  Stock.  The  259,198  shares of
Series B Preferred Stock sold in such offering were convertible at the option of
the holders thereof into shares of Common Stock,  at an initial  conversion rate
of  25  shares  of  Common  Stock  per  share  of  Series  B  Preferred   Stock,
corresponding  to a  conversion  price  equal to $4.00 per share  (the  "Initial
Conversion  Price").  As of June 11, 1997,  13,250  shares of Series B Preferred
Stock had been  converted  to Common  Stock.  The Initial  Conversion  Price was
adjusted  effective June 11, 1997,  because the average closing bid price of the
Common Stock for the 30 consecutive trading days immediately preceding such date
was less than $5.40.  The average was, in fact,  $5.175 per share.  Accordingly,
the conversion price was adjusted to $3.83 per share, which corresponds to a new
conversion  rate of  26.0875  shares  of  Common  Stock  per  share of  Series B
Preferred Stock. The conversion price (and, consequently the number of shares of
Common Stock issuable upon conversion) is subject to further adjustment upon the
occurrence of certain events. See "Description of  Securities--Conversion."  Any
such reset of the conversion  price  applicable to the Series B Preferred  Stock
would  result  in the  issuance  of  additional  shares  of  Common  Stock  upon
conversion of the Series B Preferred  Stock, and would have a dilutive effect on
purchasers of the Common Stock offered hereby.



                                       18

<PAGE>

In  addition,  in  consideration  for their  agreement  to extend the  "lock-up"
provisions  described  below which are  applicable to the shares of Common Stock
issuable upon  conversion of the Series B Preferred  Stock,  certain  holders of
shares of Series B Preferred Stock are entitled to be issued  additional  shares
of Common  Stock upon the  happening  of certain  events.  See  "Description  of
Securities--Lock-Up."  The  occurrence  of such an event and the issuance of the
additional  shares of Common Stock would have a dilutive effect on purchasers of
the Common Stock offered hereby.

FORWARD LOOKING STATEMENTS

Certain  written and oral  statements  made or  incorporated by reference by the
Company or its  representatives  in this  Prospectus,  other reports and filings
with the  Commission,  press  releases,  conferences or otherwise,  are "forward
looking  statements",  within the meaning of the Private  Securities  Litigation
Reform Act of 1995  ("PSLRA") and Section 27A of the  Securities Act of 1933 and
Section 21E of the Securities Exchange Act of 1934.  Forward-looking  statements
include, without limitation, any statement that may predict, forecast, indicate,
or imply future results, performance or achievements,  and may contain the words
"estimate", "project", "intend", "forecast",  "anticipate",  "plan", "planning",
"expect", "believe", "will", "will likely", "should", "could", "would", "may" or
words or  expressions  of similar  meaning.  In addition,  except for historical
matters,  certain other statements set forth in this Prospectus and elsewhere by
the Company from time to time,  including,  without  limitation,  the  Company's
research and  development  programs,  the  possible  filing of INDs or marketing
applications  for M-Vax,  O-Vax,  C-Vax,  or any other  products the Company may
develop,  the  seeking  of joint  development  or  licensing  arrangements  with
pharmaceutical  companies,  the research and development of particular compounds
and technologies for particular indications and the period of time for which the
Company's  existing resources will enable the Company to fund its operations and
to meet the continuing listing  requirements for the quotation of its securities
on the Nasdaq  SmallCap  Market and the  possibility of  contracting  with other
parties  additional  licenses to develop,  manufacture  and market  commercially
viable products, are forward-looking statements within the meaning of the PSLRA.
Such  forward-looking  statements are based upon the Company's current belief as
to the outcome,  occurrence and timing of future events or current  expectations
and plans based upon,  among other things,  assumptions made by, and information
currently  available to  management,  including  management's  own knowledge and
assessment  of  the  Company's  industry,  competition  and  current  regulatory
environment.  All such statements  involve  significant risks and uncertainties.
Many  important  factors  affect the  Company's  ability  to achieve  the stated
outcomes and to successfully  develop and commercialize its product  candidates,
including,  among other  things,  the ability to obtain  substantial  additional
funds, obtain and maintain all necessary patents or licenses, to demonstrate the
safety and efficacy of product candidates at each state of development,  to meet
applicable  regulatory standards and receive required regulatory  approvals,  to
meet  obligations and required  milestones under its license  agreements,  to be
capable of producing  drug  candidates  in  commercial  quantities at reasonable
costs, to compete  successfully against other products and to market products in
a  profitable  manner.  Although  the  Company  believes  that  its  assumptions
underlying the forward-looking statements are reasonable, any of the assumptions
could prove inaccurate and,  therefore,  there also can be no assurance that the
statements  included in this Prospectus and elsewhere will prove to be accurate.
In addition,  such risks and uncertainties included herein and elsewhere are not
exhaustive.  Other sections of this  Prospectus and the Company's  other filings
with the  Commission  from time to time,  may include  additional  factors which
could  impact  adversely  upon  the  Company's   business  and  other  financial
performance.  Moreover,  the Company  operates in a very competitive and rapidly
changing  environment.  New risk factors  emerge from time to time and it is not
possible for management to predict all such risk factors,  nor can it assess the
impact of all such factors on the Company's  business or the extent to which any
factor, or combination of factors, may cause actual results to differ materially
from those contained in any forward-looking statements. Accordingly, in light of
the significant  uncertainties inherent in these statements included herein, the
inclusion of such information  should not be regarded as a representation by the
Company or any other person that the objectives and plans of the Company will be
achieved;   in  fact,   actual  results  could  differ   materially  from  those
contemplated   by  such   forward-looking   statements.   Given   these   risks,
uncertainties  and limitations,  investors should not rely upon  forward-looking
statements  as a  predictor  of  actual  results.  AVAX does not  undertake  any
obligation to release publicly any revisions to these forward-looking statements
or to reflect the occurrence of unanticipated events.

YEAR 2000

Pursuant to the Company's  Year 2000 Plan,  the Company is currently  evaluating
its computerized systems to assure that the transition to the Year 2000 will not
disrupt the  Company's  operations.  The Company  also  intends to evaluate  the
systems of its key suppliers,  vendors and other collaborators.  Presently,  the
Company  does not  believe  that Year 2000



                                       19

<PAGE>

compliance  will result in material  investments  by the  Company,  nor does the
Company  anticipate  that the so-called Year 2000 problem will have any material
adverse  effect on the  business,  operations  or financial  performance  of the
Company. There can be no assurance, however, that the Year 2000 problem will not
adversely  affect the  Company  and its  business,  particularly  in an indirect
manner by virtue of any problems  encountered by third parties with whom it does
business.

NO DIVIDENDS

The Company  has never paid cash  dividends  on its  capital  stock and does not
anticipate paying any cash dividends for the foreseeable  future.  See "Dividend
Policy."




                                       20

<PAGE>

                                 USE OF PROCEEDS

The  Company  will not receive  any  proceeds  from the sale of shares of Common
Stock.  The Company is not expected to receive any proceeds from the exercise of
the Placement Warrants since the Placement Warrants may be exercised pursuant to
a cashless  exercise  provision.  In the event that the  Placement  Warrants are
exercised for cash,  the Company  intends to use such net cash  proceeds  (after
estimated  offering  expenses of this  Offering of  approximately  $620,000) for
general working capital purposes.  Proceeds,  if any, from the exercise for cash
of all the Placement  Warrants,  before deduction of estimated  expenses of this
Offering,  would be approximately $160,000.  Whether, how and to what extent any
of the Placement Warrants will be exercised,  and whether the Placement Warrants
are exercised for cash or not, cannot be predicted by the Company.

            MARKET FOR COMMON EQUITY AND RELATED STOCKHOLDER MATTERS

The Common Stock was publicly traded on the OTC Bulletin Board from December 19,
1996 through July 9, 1997. Since July 10, 1997, the Common Stock has been listed
for  quotation  on the  Nasdaq  SmallCap  Market  under the symbol  "AVXT".  The
following table sets forth, for the periods indicated,  the high and low closing
bid prices for the Common Stock,  as reported by the National  Quotation  Bureau
and/or Nasdaq, for the quarters presented. Certain of the prices set forth below
may represent inter-dealer quotations, without adjustment for markups, markdowns
and commissions and may not reflect actual transactions.

   
<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
                                                 High                Low
                                                 ----                ---
- --------------------------------------------------------------------------------
<S>                                             <C>                <C>
Fiscal year ended December 31, 1998
     First quarter                              $4 1/2             $3 5/8
     Second quarter (through May 11, 1998)       4 9/16                4
- --------------------------------------------------------------------------------
Fiscal year ended December 31, 1997
     First quarter                               6 3/4              5 1/2
     Second quarter                              5 7/8              4 1/4
     Third quarter                               5 3/8                4
     Fourth quarter                              4 1/2              3 1/2
- --------------------------------------------------------------------------------
Fiscal year ended December 31, 1996
     Fourth quarter                              6                  5 3/4
- --------------------------------------------------------------------------------
    
</TABLE>

   
The last reported sale price of the Common Stock on the Nasdaq  SmallCap  Market
on May 11,  1998 was $ 4.063 per  share.  At May 5, 1998,  there were  4,923,570
shares  of Common  Stock  outstanding,  which  were  held by  approximately  800
shareholders of record.
    

                                 DIVIDEND POLICY

The  Company  has not paid any cash  dividends  on its  Common  Stock  since its
formation.  The payment of dividends, if any, in the future, with respect to the
Common Stock,  is within the discretion of the Board of Directors of the Company
and will  depend on the  Company's  earnings,  capital  requirements,  financial
condition and other relevant factors. The Board of Directors of the Company does
not  presently  intend to  declare  any  dividends  on the  Common  Stock in the
foreseeable  future.  The  Company  anticipates  that  all  earnings  and  other
resources of the Company, if any, will be retained by the Company for investment
in its business.


                                       21

<PAGE>


                                 CAPITALIZATION

   
The following table sets forth the capitalization of the Company as of March 31,
1998.  This table should be read in  conjunction  with the  Company's  financial
statements, and the related notes thereto. See "Financial Statements."

<TABLE>
<CAPTION>
                                                                       December 31,      March 31,
                                                                           1997            1998
                                                                       ------------    ------------
<S>                                                                    <C>             <C>         
Stockholders' equity

   Preferred Stock, $.01 par value:
      Authorized Shares - 5,000,000, including Series B -
         300,000 shares
      Series B convertible preferred stock:
         Issued and outstanding shares - 204,159 and 193,202 at
            December 31, 1997 and March 31, 1998, respectively
            (liquidation preference - $27,561,465 and $26,082,270 at
            December 31, 1997 and March 31, 1998, respectively)        $      2,041    $      1,932

   Common Stock, $.004 par value:
      Authorized shares - 50,000,000
      Issued and outstanding shares - 4,582,305 and 4,868,137 at
         December 31, 1997 and March 31, 1998, respectively                  18,329          19,472

   Additional paid-in capital                                            23,995,640      23,994,606

   Subscription receivable                                                     (432)           (432)

   Deferred compensation                                                   (694,324)       (627,048)

   Deficit accumulated during the developmental stage                    (7,520,147)     (8,920,453)
                                                                       ------------    ------------

Total stockholders' equity                                             $ 15,801,107    $ 14,468,077
                                                                       ============    ============
    
</TABLE>


                                       22

<PAGE>

                     MANAGEMENT'S DISCUSSION AND ANALYSIS OF
                    FINANCIAL CONDITION AND PLAN OF OPERATION

GENERAL

   
Since its inception,  the Company has  concentrated its efforts and resources in
the  development  and  commercialization  of  biotechnology  and  pharmaceutical
products and technologies.  The Company has been unprofitable since its founding
and has incurred a cumulative net loss of  approximately  $8,920,453 as of March
31, 1998. The Company expects to incur significantly increasing operating losses
over the next several years,  primarily due to the expansion of its research and
development  programs,  including  clinical trials for M-Vax,  O-Vax,  C-Vax and
other pre-clinical studies and clinical trials for other products that may arise
from the AC Vaccine  technology and from the compounds licensed from Rutgers and
Texas A&M and other products that it may acquire or develop.
    

The Company's ability to achieve profitability depends upon, among other things,
its ability to develop  products,  obtain  regulatory  approval for its proposed
products,  and enter into agreements for product development,  manufacturing and
commercialization.  The  Company's  M-Vax,  O-Vax  and  C-Vax  products  do  not
currently  generate  revenue and the Company does not expect to achieve revenues
from these or other products for the foreseeable future.  Moreover, there can be
no  assurance  that the  Company  will  ever  achieve  significant  revenues  or
profitable  operations  from the  sale of  M-Vax,  O-Vax,  C-Vax,  or any  other
products that it may develop.

PLAN OF OPERATION

The Company is currently  engaged in the  development and  commercialization  of
biotechnology and  pharmaceutical  products and technologies.  In November 1995,
the Company acquired the rights to the AC Vaccine technology pursuant to the TJU
License.   The  Company  initially  intends  to  be  engaged  primarily  in  the
development and  commercialization of the AC Vaccine technology,  as well as the
potential  anti-cancer and  anti-infective  technology  licensed pursuant to the
Rutgers License and the potential  anti-cancer  technology  licensed pursuant to
the Texas A&M License.  See "Business." The Company  anticipates that during the
next 12 months it will conduct  substantial  research and  development of the AC
Vaccine technology,  including, without limitation, Phase III clinical trials on
M-Vax,  the Company's lead AC Vaccine  technology for metastatic  melanoma.  The
Company  also  anticipates  that it will  expend  substantial  resources  on the
research and  development  of that same  technology  for the  treatment of other
cancers, which may include ovarian, breast, prostate, lung and colorectal cancer
and acute myelogenous leukemia (AML). For example, the is treating post-surgical
stage 3 patients in its Phase I/II clinical  trial of O-Vax,  its AC Vaccine for
ovarian cancer.  This trial is being conducted at TJU under the direction of Dr.
David Berd.  The Company  also plans to initiate a similar  Phase I/II  clinical
trial of C-Vax, its AC Vaccine for colorectal cancer, within the next 12 months.
It is also  expected  that during the next 12 months,  in order to support these
clinical  trial  efforts,  the Company  will be  required to expend  substantial
resources on the  establishment of laboratory  facilities for the manufacture of
its products.  See  "Business--Technology  Applications and Product Candidates,"
"Research and Development" and "Manufacturing and Marketing."

In connection with the Company's strategy to acquire,  develop and commercialize
other potential  biotechnology products and technologies,  in December 1996, the
Company acquired the exclusive worldwide rights to a series of compounds for the
potential  treatment  of cancer  and other  infectious  diseases  from  Rutgers.
Additionally,  in February  1997, the Company  acquired the exclusive  worldwide
rights to another series of compounds for the potential treatment of cancer from
Texas A&M.  Pursuant  to the Rutgers  License,  the Texas A&M  License,  and the
related  sponsored  research  agreements with each of Rutgers and Texas A&M, the
Company intends to expend substantial  resources on the research and development
of these compounds.

While there can be no assurance, the Company may acquire additional products and
technologies  during the next 12  months,  which may or may not be in the cancer
immunotherapy  field.  Should the Company  acquire such  additional  products or
technologies,  it is anticipated  that such additional  products or technologies
will  require  substantial  resources  for  research,  development  and clinical
evaluation.  However, there can be no assurance that the Company will be able to
obtain the additional financing necessary to acquire and develop such additional
products and technologies.  In addition, there can be no assurance, that changes
in the Company's  research and development plans or other changes which would or
could alter the  Company's  operating  expenses  will not require the Company to
reallocate  funds  among its planned



                                       23

<PAGE>

activities and curtail certain planned expenditures.  In such event, the Company
may need additional financing.  There can be no assurance as to the availability
or the terms of any required  additional  financing,  when and if needed. In the
event that the Company fails to raise any funds it requires, it may be necessary
for the Company to significantly curtail its activities or cease operations.

   
The Company's  Research and  Development  expenses have increased  significantly
from  $380,000 in the three months ended March 31, 1997 to $957,000 in the three
months ended March 31, 1998. The increase relates primarily to the progress made
in  preparing  the AC  Vaccine  technology  for  phase  III  clinical  trials in
melanoma,  commencement of a  proof-of-concept  study in ovarian cancer with the
same  technology  and  completion of a Class 10,000 "clean room"  laboratory for
clinical  manufacturing  of the  vaccine and  ongoing  expenses  related to that
facility.  Research and development costs also increased due to the licensing of
the  topoisomerase  inhibitor  compounds  from Rutgers and the  licensing of the
anti-estrogen  compounds from Texas A&M and costs of their ongoing  development.
General and  administrative  expenses have  decreased from $823,000 in the three
months ended March 31, 1997 to $651,000 in the three months ended March 31, 1998
due primarily to the completion of the  registration of the shares issued in the
Company's  1996 private  placement  and the listing of such shares on the Nasdaq
Small Cap Market in early 1997 and the  non-recurrence  of these  costs in 1998.
The Company anticipates that, over the next 12 months, expenses will continue to
increase,  particularly  as  development  proceeds  with the AC Vaccine  and the
Rutgers and Texas A&M compounds.
    

Also,  during the past 12 months,  the Company  hired two new  employees  and it
anticipates  that over the next 12 months it may hire  additional new employees,
particularly in connection with the establishment of facilities for the clinical
development and manufacture of the AC Vaccine products or any other technologies
which may have  been,  or may be,  acquired.  The  timing and cost of hiring any
additional  employees  or  the  establishment  of any  such  facility  may  vary
depending on need and currently cannot be predicted with any certainty, however,
the Company currently  estimates that the establishment of its GMP manufacturing
facility in Philadelphia will necessitate approximately $1,500,000 to $2,500,000
in funding, and take approximately six-to-twelve months to complete. The initial
$150,000 in funding for such  facility is expected to come from a mortgage  loan
from the Philadelphia  Economic  Development  Corporation referred to below. The
balance of such funding is expected to come from the Company's  existing working
capital. See "Liquidity and Capital Resources".

LIQUIDITY AND CAPITAL RESOURCES

   
The  Company  currently   anticipates  that  its  current  resources  should  be
sufficient to fund operations for approximately the next 21-33 months based upon
the Company's  current  operating plan. The Company does not currently expect to
be required to raise  additional  capital in the next 12 months,  although  from
time to time, depending upon its anticipated future needs, the Company may avail
itself of opportunities  in the capital markets to raise  additional  capital if
acceptable terms may be obtained.  However,  since the Company's working capital
requirements will depend upon numerous factors,  including,  without limitation,
progress of the Company's  research and  development  programs,  preclinical and
clinical testing, timing and cost of obtaining regulatory approvals,  changes in
levels of resources that the Company devotes to the development of manufacturing
and marketing capabilities,  competitive and technological  advances,  status of
competitors,   and  the  ability  of  the  Company  to  establish  collaborative
arrangements  with  other  organizations,  there  can be no  assurance  that the
Company  will be  able to  meets  its  business  objectives  under  its  current
operations plan and/or not need to raise additional  capital.  Since the Company
has no committed  external  sources of capital,  and expects no product revenues
for the foreseeable future, it will likely require additional  financing to fund
future operations.  The Company has received authorization from the Philadelphia
Economic Development Corporation for a $150,000 Economic Stimulus Mortgage Loan,
at a fixed interest rate of 3 percent, to assist the Company in establishing its
GMP manufacturing  facility in Philadelphia.  The loan is subject to negotiation
and execution of definitive documentation.  There can be no assurance,  however,
that the Company will be able to obtain additional funds it will require for its
projects on acceptable terms, if at all. If adequate funds are not available the
Company may be required to delay,  reduce the scope of or eliminate  one or more
of its research or development  programs;  to obtain funds through  arrangements
with collaborative partners or others that may require the Company to relinquish
rights to certain technologies,  product candidates or products that the Company
would  otherwise  seek to develop or  commercialize  itself;  or to license  the
rights to such  products on terms that are less  favorable  to the Company  that
might   otherwise  be  available.   See  "Risk   Factors--Accumulated   Deficit;
Uncertainty of Future Profitability."
    



                                       24

<PAGE>

IMPACT OF RECENTLY ISSUED ACCOUNTING STANDARDS

In June 1997, the Financial  Accounting  Standards Board (FASB) issued Statement
No. 130, Reporting  Comprehensive Income, which is effective for years beginning
after  December  15,  1997,  and will be  adopted by the  Company  in 1998.  The
Statement  establishes  standards for the reporting and display of comprehensive
income and its components in a full set of general purpose financial statements.
Management  does not  believe  that this  Statement  will have any impact on the
results of operations or the financial position of the Company.



                                       25

<PAGE>

                                    BUSINESS

GENERAL

AVAX  Technologies,  Inc.  ("AVAX" or the  "Company"),  is a  development  stage
biopharmaceutical  company which  intends to acquire  rights to, and to develop,
technologies and products for the treatment of cancer and other life-threatening
diseases.  The Company  initially  intends to focus its efforts primarily on the
development of immunotherapies and chemotherapies for cancer. Immunotherapy is a
rapidly developing segment of the cancer therapeutic market.

In 1995,  the  Company  licensed  (the  "TJU  License")  from  Thomas  Jefferson
University  ("TJU") an issued U.S.  patent and certain U.S.  and foreign  patent
applications  covering  a  cancer  vaccine  containing  a cancer  patient's  own
modified  tumor  cells,  and a method for making and using such a vaccine.  This
technology  allows the  Company to produce an  autologous  cell  vaccine (an "AC
Vaccine")  that attempts to stimulate  the patient's  immune system to eliminate
the cancer.  This  technology  has emerged  from  research  conducted at TJU and
primarily  involves the removal of a patient's own tumor cells,  modifying  them
with a small molecule known as a hapten, and reintroducing the product back into
the  patient.  The  approach  is based on the premise  that a  patient's  immune
response  to a strongly  immunogenic,  hapten-conjugated  tumor  antigen  may be
followed  by the  development  of an immune  response  to the  unmodified  tumor
antigen,  somewhat  analogous  to  the  phenomenon  of  drug-induced  autoimmune
disease.

The  Company's  initial  AC  Vaccine(TM),  M-Vax(TM),  is  currently  undergoing
physician-sponsored  human clinical trials based on an experimental  protocol at
TJU as an  outpatient,  post-surgical,  adjunct  therapy  for the  treatment  of
melanoma,  and is  believed by the  Company to be the first  therapeutic  cancer
vaccine to show a  substantial  increase in the survival  rate for patients with
stage 3 melanoma.  In such  ongoing  clinical  trials at TJU,  over 300 melanoma
patients have been treated post-surgically on an outpatient basis with M-Vax. In
62  patients  with  stage 3  melanoma  in  protocols  in  which  there  has been
sufficient  time  for  long-term  follow-up,  the  five-year  survival  rate  is
approximately  60%. This compares with the  historical and control group stage 3
survival rate of  approximately  20%, and the survival  rate for treatment  with
high dose alpha  interferon  of  approximately  32% in stage 3 patients whom the
Company  believes to be comparable to those treated with M-Vax. In patients over
50 years old treated with M-Vax, the five-year  survival rate was  approximately
71%. In the over 300 patients treated in studies, the Company believes that only
relatively  minor side effects,  such as mild transient  nausea and soreness and
swelling  at the  site  of the  application  of the  M-Vax  vaccine,  have  been
witnessed to date. Based on these results,  and following a meeting with the FDA
to discuss its development plans, the Company plans to conduct two pivotal Phase
III multi-center clinical trials of M-Vax.

   
The Company also believes that the AC Vaccine  technology may have  applications
in the treatment of other cancers, which may include ovarian,  breast, prostate,
lung and colorectal  cancers and acute  myelogenous  leukemia (AML). The Company
intends  to fund the  pre-clinical  and  initial  clinical  development  of this
technology for at least some of these indications.  Accordingly,  in addition to
continuing  the  clinical  work on M-Vax,  the Company has also  entered  into a
sponsored  research agreement with TJU relating to the development of additional
immunotherapies based on the AC Vaccine technology.  For example, the Company is
treating  post-surgical  stage 3 patients  in its Phase I/II  clinical  trial of
O-Vax(TM),  its AC Vaccine for ovarian cancer.  This trial is being conducted at
TJU under the  direction  of Dr.  David  Berd and has  already  shown a positive
immune response, as measured by a delayed type  hypersensitivity  (DTH) test, in
the first seven of seven patients treated.  The Company also plans to initiate a
similar Phase I/II clinical  trial of C-Vax(TM),  its AC Vaccine for  colorectal
cancer, within the next year.
    

In order to contain  costs,  the Company may continue to use sponsored  research
agreements  and  contract   research   organizations  to  help  it  develop  its
technologies. At the appropriate time the Company may seek corporate partners to
provide the necessary  resources and expertise for clinical  development  and to
manufacture,  market and distribute products. In addition,  the Company may seek
to explore the acquisition and subsequent  development and  commercialization of
additional  commercially  promising  immunotherapy,  chemotherapy  and  adjuvant
technologies. No assurance can be given that the Company will have the requisite
resources or that any such projects will be identified on terms favorable to the
Company, if at all.


                                       26

<PAGE>

In connection with the Company's strategy to acquire,  develop and commercialize
other  potential  biotechnology  products  and  technologies,  the  Company  has
licensed from Rutgers University and the University of Medicine and Dentistry of
New Jersey (collectively,  "Rutgers"), certain patent applications relating to a
series of  topoisomerase  inhibitor  compounds  for the  potential  treatment of
cancer and infectious diseases (the "Rutgers  License"),  and from The Texas A&M
University  System  ("Texas  A&M"),  an issued U.S.  patent and  certain  patent
applications  relating  to a series  of novel  anti-estrogen  compounds  for the
potential treatment of cancer (the "Texas A&M License"). Pursuant to the Rutgers
License and the Texas A&M  License  (and under its  related  sponsored  research
agreements  with each of Rutgers and Texas A&M),  the Company  intends to expend
substantial resources on the research and development of these compounds.

BACKGROUND AND SCIENTIFIC RATIONALE OF THE AC VACCINE TECHNOLOGY

Cancer is characterized by the uncontrolled  growth and spread of abnormal cells
which escape the body's protective immune  surveillance  system,  invade healthy
tissues and destroy  normal tissue  function and  ultimately  lead to a person's
death if  untreated.  Cancers,  composed of either solid  tumors or  blood-borne
cancerous  cells,  over time tend to spread to other  tissues  and organs in the
body  (metastasis).  Cancer may be diagnosed  at any stage of the disease,  from
very early  (best  prognosis)  to very late  (worst  prognosis).  When cancer is
detected  early  and has not yet  metastasized  (spread)  to  other  organs  and
tissues, surgical removal of the tumor is often effective.  Unfortunately,  many
cancers are not discovered until metastatic  cancer cells from the primary tumor
have already entered the blood or lymphatic system and established new tumors at
distant sites.  These cells, and the tumors they form, are difficult to diagnose
and treat with current technology.

As of 1997, the National Cancer Institute (NCI) estimates that approximately 7.4
million people living in the United States were diagnosed as having cancer.  The
incidence  of cancer  continues  to increase.  The NCI also  estimates  that the
overall  cost  to  the  health  care  system  of  treating   these  patients  is
approximately  $104 billion.  The Company is aware of estimates that deaths from
cancer  will  surpass  cardiovascular  mortality  worldwide  by  the  end of the
century.

Although some progress has been made, few effective treatments are available for
most adult solid tumors,  which often metastasize and invade other organs before
they are detected.  The standard  treatment  for solid tumors is surgery.  While
this treatment is effective in many types of cancers,  in cases in which removal
of the tumor is incomplete or in which the tumor has metastasized, the patient's
prognosis  is  poor.   Chemotherapy  and  radiation  therapy  are  rather  crude
treatments since they kill cells indiscriminately,  destroying normal as well as
malignant  cells,  leading  to  toxic  side-effects  and  thereby  limiting  the
usefulness  of these  therapies.  A safe,  effective  treatment for residual and
metastatic disease is clearly needed.  Such a treatment,  if effective and safe,
would increase patient survival and may, therefore, be widely adopted.

Although,  many different types of drugs are used to treat a variety of cancers,
no one drug has been found to be a cure for the disease.  Given the need for new
effective treatments for cancer, a drug which may effectively treat cancer could
have a large market potential.  Although there can be no assurance,  the Company
believes that an AC Vaccine,  developed to  effectively  treat the recurrence of
cancer after surgery, is likely to have a sizable market share. Surgery, in many
cases  is the  first  treatment  performed  on  cancer  patients,  and if such a
treatment  following  surgery were to prove  broadly  applicable  and safe,  its
market  potential could be significant  while enabling the health care system to
realize  significant  overall  cost  savings due to a reduction in the number of
cases of recurrent  disease requiring  hospitalization  and ongoing clinical and
home care.

Immunotherapy is an emerging cancer treatment modality that the Company believes
shows  promise for  utilizing a patient's  own immune  system to  recognize  and
eliminate cancer cells. There are a number of different types of immunotherapies
such as cytokines,  antibodies,  activated  cell therapy and vaccines  currently
under development by third parties. See  "Business--Competition."  In all cases,
immunotherapies  attempt to  modulate  the body's  immune  system to contain and
eliminate   cancer  cells.  In  concept,   immunotherapies   should  have  fewer
side-effects than chemotherapies and should be relatively  well-tolerated by the
patient.  Thus,  although  there can be no  assurance  of  success,  the Company
believes  immunotherapies  have the  potential to be effective  and by reason of
their selectivity, relatively safe anti-cancer therapeutic agents.



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<PAGE>

                 TECHNOLOGY APPLICATIONS AND PRODUCT CANDIDATES

     The AC Vaccine Technology

The  Company's  primary  proprietary  technology is a patented  autologous  cell
vaccine (an "AC  Vaccine")  that  attempts to stimulate the patient's own immune
system  to  recognize,  contain  and  eliminate  cancer  cells.  The  technology
primarily involves the removal of a patient's own tumor cells,  conjugating them
to a small molecule known as a hapten-dinitro  phenyl (DNP),  and  reintroducing
the product back into the patient with an  adjuvant,  which is an  immunological
agent  that  increases  the immune  response.  Haptenization  is the  process of
modifying a larger molecule with a smaller molecule. The small molecule known as
a hapten,  is  recognized  by the immune  system and elicits an immune  response
against  the  larger  molecule.  The  approach  is based on the  premise  that a
patient's  immune  response  to a strongly  immunogenic,  hapten-modified  tumor
antigen  may be  followed  by  the  development  of an  immune  response  to the
unmodified tumor antigen,  somewhat  analogous to the phenomenon of drug-induced
autoimmune  disease.  Therefore,  the process of  haptenizing a patient's  tumor
cells may allow the  unhaptenized  cancer cells to be  recognized  by the body's
immune system leading to an immune  response  against the patient's  tumor cells
and their potential elimination from the body.

In  practice,  the  Company's  initial  therapy  would be used as an  adjunct to
surgical  treatment of tumors.  In one proposed model,  the surgeon would remove
the  patient's  tumor  and send the cells to the  Company  where  they  would be
processed  and  stored.  The  vaccine  would  then be  created  and  sent to the
patient's doctor as each dose is required for  administration  of the vaccine on
an  outpatient  basis.  The patient's  response to the  treatment  would then be
monitored using standard protocols.

The  Company is  initially  developing  this  technology  for the  treatment  of
metastatic melanoma but believes that it possibly could have applications in the
treatment of a variety of solid tumors such as ovarian,  breast,  prostate, lung
and  colorectal  cancer  and may have  applications  in the  treatment  of acute
myelogenous leukemia (AML).

     M-Vax

General.  The Company's lead product,  M-Vax, is a  post-surgical  treatment for
stage 3  melanoma.  Melanoma  is a highly  malignant  tumor  that can  spread so
rapidly  that it can be fatal  within  months of  diagnosis.  The  incidence  of
melanoma is  increasing  at a faster rate than most other  cancers in the United
States,  Australia,  northern  Europe and  Canada.  Although  there are  several
causative factors,  rising exposure by the general population to UV radiation in
sunlight  appears to be the most significant  factor behind this increase.  With
the incidence  growing at a rate in excess of 6% annually,  it is estimated that
melanoma  affects over 200,000 people in the United States,  with  approximately
40,300 new cases diagnosed in 1997.

Melanoma patients may be categorized according to the following staging system:

o    Stage 1 -- lesion less than 1.5mm thickness and no apparent metastasis;

o    Stage 2 -- lesion greater than 1.5mm  thickness  and local  spreading  from
     primary cancer site;

o    Stage 3 -- metastasis to regional draining lymph nodes and regional  spread
     from primary cancer site; and

o    Stage 4 -- distant metastasis.

Surgical excision of the tumor mass and any of the nearby lymph nodes into which
there has been  metastasis,  followed  by high dose alpha  interferon,  which is
currently  the only  FDA-approved  treatment for patients with stage 3 melanoma.
However,  in many cases  survival is  restricted  by the inability of surgery to
guarantee  removal of all the tumor cells. It is highly possible for the patient
to remain with undetected metastasis. Further, use of high dose alpha interferon
is associated with many severe side effects,  often leading to either  reduction
in dosage or complete  discontinuation  before the full course of  treatment  is
completed.   Due  to  its  limited  efficacy  and  highly  toxic  side  effects,
chemotherapy  and radiation  have not been widely used in the treatment of these
patients.  The  five-year  survival  rate for these  patients is believed by the
Company to be approximately 20%. Recently, the FDA approved the use of high dose
alpha  interferon  for the  post-surgical  treatment  of melanoma  patients.  In
clinical  studies alpha  interferon has  demonstrated a five-year  survival rate
that 



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<PAGE>

the  Company  believes  to be  approximately  32% in stage 3  patients  whom the
Company believes to be comparable to those treated with M-Vax. Thus, the Company
believes that there is a clear need for an effective  post-surgical treatment of
stage 3  melanoma  patients,  one that  would  contain  metastasis  and  prevent
recurrent disease.

Clinical  Trials.  Dr.  David  Berd,  the  inventor of the  patented  technology
licensed to the Company by TJU, is a clinical  oncologist  at TJU.  Dr. Berd has
been  conducting  physician-sponsored  clinical  trials  for  the  treatment  of
melanoma using M-Vax for approximately the past eight years.

In such ongoing  clinical  trials at TJU,  over 300 melanoma  patients have been
treated  post-surgically  on an outpatient basis with M-Vax. In 62 patients with
stage 3  melanoma  in  protocols  in which  there has been  sufficient  time for
long-term  follow-up,  the five-year  survival rate is  approximately  60%. This
compares with the  historical and control group survival rates of about 20%, and
the survival rate for treatment with high dose alpha interferon of approximately
32% in stage 3 patients  whom the  Company  believes to be  comparable  to those
treated  with M-Vax.  In  patients  over 50 years old  treated  with M-Vax,  the
five-year  survival rate was  approximately  71%. The Company  believes that the
results to date of the ongoing  clinical trial  represent the first  substantial
increase in survival for stage 3 melanoma patients treated by immunotherapy.  In
the over 300  patients  treated  in  studies,  the  Company  believes  that only
relatively  minor side effects,  such as soreness and mild transient  nausea and
swelling  at the  site  of the  application  of the  M-Vax  vaccine,  have  been
witnessed to date.

David Berd, M.D.,  Professor of Medicine and Clinical  Oncologist at TJU and the
inventor of the AC Vaccine technology, has conducted the ongoing clinical trials
at TJU pursuant to an FDA-approved, physician-sponsored Investigational New Drug
Application  ("IND").  The  Company  met  earlier  with the FDA to  discuss  the
clinical  results obtained with M-Vax, the use of such results in support of the
submission  of a  Company-sponsored  IND to the FDA,  and to review its proposed
development  plan.  Following such meeting,  the Company reviewed with the FDA a
proposed phase 3 protocol and the Company's plans to submit a  Company-sponsored
IND to support the pivotal  trial  program.  This IND has been  submitted to the
FDA,    is     currently     under     review,     and     addresses     product
characterization/manufacturing  issues  raised  by the FDA to  ensure  that  all
pivotal data will support a product  license  application.  No patients  will be
enrolled  in the  pivotal  trial  program  until  the  Company  and  the FDA are
satisfied  that all product  issues are resolved.  Depending upon the results of
such clinical trials, it is the Company's  intention to use the results of these
Company-sponsored  clinical trials along with the results of the clinical trials
conducted at TJU, as the basis for the filing of an application for FDA approval
to market  M-Vax.  During  the third and  fourth  quarters  of 1997 the  Company
designed  and  developed a class  10,000 clean room at TJU to be used as interim
capacity which the Company  believes is adequate to support  commencement of the
Phase III clinical program.  Completion of these studies,  however, is dependent
upon the Company's ability to establish  additional Good Manufacturing  Practice
("cGMP")  facilities which will be needed for compliance with certain regulatory
standards  promulgated  by the FDA. To that end,  the Company has entered into a
lease for space in  Philadelphia,  Pennsylvania to begin  construction of such a
facility.  While  management  of the Company  anticipates  that such  additional
facilities will be established in a timely manner,  there can be no assurance of
the  adequacy  of the  manufacturing  or of FDA  acceptance.  Delays  in  either
manufacturing  capability or regulatory approval would delay completion of these
studies and could have a material adverse effect on the Company.  Depending upon
the results of the anticipated  clinical trials,  the Company intends to use the
results of these Company-sponsored clinical trials along with the results of the
clinical  trial  conducted at TJU, as the basis for the filing of an application
for FDA approval to market M-Vax. The Company's management estimates that it may
be in the position to submit such  application for FDA approval in approximately
the year 2000 or 2001. The targeted timetable for filing a marketing application
depends upon the rate of enrollment  of both clinical  sites and patients in the
Phase III studies,  the adequacy of the overall clinical outcome data from these
trials,  and  ultimately  acceptance  by the  FDA of the  studies.  A  delay  in
enrollment of either  clinical sites or patients  would delay  completion of the
trials.  Moreover,  equivocal  clinical outcomes from such trials would have the
effect  of at  least  delaying  the  timetable  for  submission  of a  marketing
application and would impact negatively on regulatory  acceptance of the studies
in connection with the possible approval of such marketing application.

The Company also may pursue a similar regulatory approval and  commercialization
strategy for M-Vax in  Australia,  Canada,  Mexico and certain  other  countries
through corporate partnering  strategies,  although such strategies have not yet
been  finalized  or  initiated.  Denial  of  any  regulatory  approvals  or  any
significant  delays in obtaining any of the same,  would have a material adverse
effect on the Company.



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<PAGE>

The  Company  is  treating  post-surgical  stage 3  patients  in its Phase  I/II
clinical trial of O-Vax, its AC Vaccine for ovarian cancer.  This trial is being
conducted  at TJU  under  the  direction  of Dr.  Berd and has  already  shown a
positive immune response, as measured by a DTH test, in the first seven of seven
patients.  The Company  intends for further  clinical trials to be conducted for
the purpose of collecting Phase I/II  preliminary  efficacy data with respect to
the effectiveness of O-Vax in treating advanced stages of ovarian cancer, and to
use the results of all such Company-sponsored trials to support the commencement
of a subsequent Phase III program for O-Vax.

The  Company  also plans to  initiate a similar  Phase  I/II  clinical  trial of
C-Vax(TM), its AC Vaccine for colorectal cancer, during 1998.

There  can  be  no  assurance,   however,  that  the  foregoing  forward-looking
statements with respect to the Company's intended timetable for the commencement
of the Phase III clinical  trials for M-Vax,  the eventual filing of a marketing
application for M-Vax and the Company's  intended  timetable for clinical trials
for O-Vax and C-Vax will be met.  For a  discussion  of certain of the risks and
uncertainties which may impact upon such timing, see "Risk  Factors--Development
Stage   Company",   "Technological   Uncertainty  and  Early  Stage  of  Product
Development",   "Government  Regulation;  No  Assurance  of  Product  Approval",
"Dependence on Others for Clinical Development of, and Regulatory Approvals for,
Manufacturing and Marketing of Pharmaceutical Products", "Dependence on Licenses
and Sponsored Research Agreements", "Lack of Manufacturing Facilities", "Forward
Looking Statements" and the other items under "Risk Factors".

In addition, the Company has recently entered into a Technical Testing Agreement
(the  "Illinois  Agreement")  with  the  University  of  Illinois  ("Illinois"),
pursuant to which Illinois will conduct testing in order to determine whether an
animal  model  can  be  used  to  demonstrate  the   therapeutic   potential  of
DNP-vaccine, such as the Company's AC Vaccine, in experimental tumor models, and
the value of adjunctive  therapies.  In consideration of the Illinois Agreement,
the Company and Illinois have agreed to a budget of  approximately  $160,000 for
the expected two-year term of the study, which shall be funded by the Company.

     Topoisomerase Inhibitors

   
The Rutgers  License  relates to a series of novel  anticancer  compounds  being
prepared and studied under the  direction of Professors  Edmund LaVoie and Leroy
Liu at Rutgers University (the "Rutgers Compounds").  The Rutgers Compounds have
proven effective on animal models during  pre-clinical  studies,  and,  although
there can be no  assurance,  the Company  believes that they may be effective on
humans.  The  Rutgers  Compounds  fall into six  distinct  and  varied  chemical
classes,  and have been shown to inhibit  topoisomerase  I or  topoisomerase  II
activities,  depending on the exact  structure.  Topoisomerases  are key enzymes
needed for  remolding  DNA, a necessary  function for  malignant  tumor  growth.
Inhibitors of these enzymes have been proven to be clinically-useful  anticancer
therapies. In addition to having topoisomerase-inhibiting  characteristics, some
of the Rutgers compounds have shown activity against fungal as well as parasitic
organisms.  Both  United  States and  non-U.S.  patents  have been filed for the
Rutgers Compounds and their anticancer and  anti-infective  uses.  Although such
compounds  are in an early stage of  pre-clinical  development  for solid tumor,
anti-fungal and parasitic indications, the Company intends to pursue development
of one or more of these compounds. The Company's management anticipates that the
pre-clinical  work may lead to  identification of a lead compound by early 1998,
and that an IND for such  compound  may be filed  with the FDA during  1998,  or
early 1999.  However,  there can be no assurance  that any such  compounds  will
ultimately  reach  a stage  of  clinical  testing  or  commercialization.  For a
discussion of certain risks which may impact upon the timing and outcomes of the
development  of the  Rutgers  compounds,  see "Risk  Factors--Development  Stage
Company",  "Technological  Uncertainty and Early Stage of Product  Development",
"Government Regulation; No Assurance of Product Approval", "Dependence on Others
for Clinical  Development of, and Regulatory  Approvals for,  Manufacturing  and
Marketing of  Pharmaceutical  Products",  "Dependence  on Licenses and Sponsored
Research  Agreements",  "Lack of  Manufacturing  Facilities",  "Forward  Looking
Statements" and the other items under "Risk Factors".
    

     Novel Anti-Estrogens

The Texas A&M License  relates to a series of novel  anticancer  compounds  (the
"Texas A&M  Compounds")  being  prepared  and  studied  under the  direction  of
Professor  Stephen Safe at Texas A&M  University.  The unique  activity  against



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<PAGE>

   
solid  tumors  exhibited  by  the  Texas  A&M  Compounds  can be  classified  as
anti-estrogen,  although they appear to act indirectly on the estrogen  receptor
through a novel pathway. Anti-estrogens have been proven to be clinically-useful
anticancer therapies. United States patents for both the Texas A&M Compounds and
their anticancer uses have been filed. Although non-U.S. patent filings have not
yet been made, the Company  expects that foreign patent coverage will be pursued
as the result of ongoing laboratory  research.  Although such compounds are in a
early stage of pre-clinical development for solid tumor indications, the Company
intends to pursue  development of one or more of these compounds.  The Company's
management  anticipates that the pre-clinical work may lead to identification of
a lead compound  early 1998, and that an IND for such compound may be filed with
the FDA during 1998, or early 1999. However,  there can be no assurance that any
such  compounds  will   ultimately   reach  a  stage  of  clinical   testing  or
commercialization.  For a discussion  of certain risks which may impact upon the
timing and outcomes of the  development  of the Texas A&M  compounds,  see "Risk
Factors--Development Stage Company",  "Technological Uncertainty and Early Stage
of  Product  Development",  "Government  Regulation;  No  Assurance  of  Product
Approval",  "Dependence  on Others for Clinical  Development  of, and Regulatory
Approvals  for,   Manufacturing  and  Marketing  of  Pharmaceutical   Products",
"Dependence   on  Licenses  and  Sponsored   Research   Agreements",   "Lack  of
Manufacturing  Facilities",  "Forward  Looking  Statements"  and the other items
under "Risk Factors".
    

RESEARCH AND DEVELOPMENT

     Autologous Cell Vaccines

In connection with the TJU License entered into in November 1995, TJU, Dr. Berd,
as TJU's principal  investigator,  and the Company entered into a Clinical Study
and Research  Agreement  pursuant to which TJU and Dr. Berd began a research and
clinical study program for the further  development of the AC Vaccine technology
for additional cancer targets. In turn, the Company agreed to fund such research
as  follows:  $220,094  for the first year of the  agreement,  $220,381  for the
second year of the  agreement  and at least  $100,000  for the third year of the
agreement. Following the third year, the Company is obligated to spend a minimum
of  $500,000  per year on the  development  of the AC Vaccine  technology  until
commercialized  in the United  States.  If following the third year, the Company
files for FDA  approval of a  Company-sponsored  marketing  application  for the
right to market a product arising from such technology, the Company may elect to
spend  less  than  $500,000  per  year  on the  development  of  the AC  Vaccine
technology  during the period of time the marketing  application is under review
by the FDA. If the Company does not meet its  financial,  development,  or other
obligations in a timely manner under its license agreements or related sponsored
research  agreements,  the  Company  could  lose the  rights to its  proprietary
technology or the right to have its  licensors  and others  conduct its research
and development  efforts,  any of which could have a material  adverse effect on
the  Company.  TJU has the  right to  terminate  the R&D  agreement  on 30 days'
written  notice if it becomes  unable for any reason to complete the Study.  See
"Risk Factors--Dependence on Licenses and Sponsored Research Agreements."

     Topoisomerase Inhibitors

In  consideration  of the license  granted to the Company by Rutgers in December
1996, the Company has committed to the funding of research for each of the first
three years of the Rutgers License at a rate of $100,000 per year as well as the
payment of certain indirect overhead costs. The Company also is obligated to pay
Rutgers  for certain  overhead  costs for such  three-year  period on a deferred
basis.  In addition,  the Company is obligated to spend an aggregate of $200,000
in the first year, $300,000 in the second year and $500,000 each year thereafter
until the first  year of  commercial  marketing  of a product  derived  from the
Rutgers  compounds,  for  the  development,  research  (including  the  $100,000
research  funding  commitment  in each of the first three  years),  manufacture,
regulatory approval, marketing and selling of a product derived from the Rutgers
compounds.  If the Company fails to make such  payments in  accordance  with the
terms of the  Rutgers  License,  Rutgers  would be  entitled  to  terminate  the
agreement and no further research would be performed thereunder. The termination
of the Rutgers License could have a material adverse effect on the Company.  See
"Risk Factors--Dependence on Licenses and Sponsored Research Agreements."

It is expected  that the research and  development  effort with respect to these
compounds  will be conducted at Rutgers under the direction of Edmond J. LaVoie,
Ph.D., the co-originator of the technology  underlying the Rutgers License.  Dr.
LaVoie is Professor of Medicinal  Chemistry  and Chairman of the  Department  of
Pharmaceutical  Chemistry at Rutgers and is a member of the Company's Scientific
Advisory Board. See "Management--Scientific Advisory Board."



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<PAGE>

     Novel Anti-Estrogens

In  consideration of the license granted to the Company by Texas A&M in February
1997,  the  Company  has  committed  to the funding of research in the amount of
$108,750 for each of the first three years. In addition, the Company is required
to achieve certain  milestones  toward  development of a licensed product within
certain  specified  time frames.  If the Company  fails to make such payments or
achieve such  milestones in accordance  with the terms of the Texas A&M License,
Texas A&M would be entitled to terminate the  agreement and no further  research
would be performed  thereunder.  The  termination of the Texas A&M License could
have a material adverse effect on the Company. See "Risk  Factors--Dependence on
Licenses and Sponsored Research Agreements."

It is anticipated  that the research and development  effort with respect to the
potential  anti-cancer  compounds  licensed  under the Texas A&M License will be
conducted  at Texas A&M under the  direction  of  Stephen H.  Safe,  Ph.D.,  the
originator of the technology  underlying the Texas A&M License.  Dr. Safe is Sid
Kyle  Professor  of  Toxicology  at Texas A&M and is a member  of the  Company's
Scientific Advisory Board. See "Management--Scientific Advisory Board."

PROPRIETARY RIGHTS

     The TJU License

   
Pursuant to the TJU License,  the Company has licensed an issued U.S. patent and
certain  U.S.  and  foreign  patent  applications  covering  a  process  for the
modification  of a  patient's  own tumor  cells into a cancer  vaccine.  The TJU
License is a  royalty-bearing  license for the rights to such  patented  vaccine
technology,  and provides for certain  payments  upon the  occurrence of certain
milestones.  As consideration  for the TJU License,  the Company paid $10,000 to
TJU,  and issued  229,121  shares of Common  Stock to each of TJU and Dr.  Berd,
representing  7.5% (15% in the  aggregate)  of the Company's  total  outstanding
voting securities at the time of issuance.
    

The Company is obligated to make certain  milestone  payments to TJU as follows:
$10,000 upon  initiation of the first clinical trial that is approved by the FDA
(or  comparable  international  agency),  $10,000  upon the  first  filing  of a
marketing  application  with the FDA (or  comparable  filing  with a  comparable
international  agency), and $25,000 upon receipt by the Company of approval from
the FDA (or comparable  international agency) to market products relating to the
AC Vaccine technology. In addition, the Company is obligated to pay royalties on
its net sales revenue and a percentage of all revenues received from sublicenses
relating to the AC Vaccine  technology.  Failure to comply with the terms of the
TJU  License  may cause its  termination,  which  would have a material  adverse
effect on the Company. See "Risk  Factors--Dependence  on Licenses and Sponsored
Research Agreements."

     The Rutgers License

Pursuant to the Rutgers  License,  the Company has  licensed  certain  U.S.  and
foreign patent applications  relating to a series of compounds for the potential
treatment  of cancer  and  infectious  diseases.  The  Company  paid  $15,000 as
consideration  for the  Rutgers  License,  and has  agreed to pay an  additional
$15,000 license  maintenance  fee in each subsequent  year. The Company has also
committed to the issuance to Rutgers of warrants to purchase  125,000  shares of
Common Stock at a price of $8.24 per share.  Such warrants are exercisable  upon
the achievement of certain  development-related  milestones. The first 75,000 of
such  warrants  will expire in 2006 and the final 50,000 of such  warrants  will
expire in 2011.  These  warrants will provide for cashless  exercise,  piggyback
registration rights and certain anti-dilution rights.

The Company also has agreed to fund  research in the amount of $100,000 per year
for the first three  years of the Rutgers  License as well as to pay for certain
indirect  overhead  costs during such time. The Company also is obligated to pay
on a deferred basis for certain overhead costs for such three-year  period.  The
license  maintenance fee is not payable in years where research funding is equal
to or greater than $100,000.

The  Company is also  obligated  to pay certain  milestone  payments as follows:
$15,000 on the earlier of October 31, 1999 or the date of first filing of an IND
application  with the FDA, or comparable  international  agency,  $25,000 on the
earlier of October 31, 2001 or the date of  initiation of Phase II trials in the
United States or another major market country, $45,000



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<PAGE>

on the earlier of October  31,  2005 or the date of first  filing of a marketing
application with the FDA, or comparable international agency and $150,000 on the
earlier of October  31,  2008 or the date of receipt by the  Company of approval
from the FDA or comparable international agency to market products. In addition,
the Company is required to pay  royalties  on its  worldwide  net sales  revenue
derived from the Rutgers  compounds  and a percentage  of all revenues  received
from  sublicenses of products  derived from these  compounds.  Failure to comply
with the terms of the  Rutgers  License may cause its  termination,  which would
have a material adverse effect on the Company. See "Risk  Factors--Dependence on
Licenses and Sponsored Research Agreements."

     The Texas A&M License

Pursuant  to the Texas A&M  License,  the  Company  has  licensed an issued U.S.
patent and certain U.S. and foreign patent applications  relating to a series of
compounds  for the  potential  treatment  of  cancer.  Under  the  terms  of the
agreement, the Company is obligated to pay future milestone payments,  royalties
on its net sales  revenue  derived from these  compounds and a percentage of all
revenues  received from  sublicensees  of such  compounds.  The Company also has
agreed to fund  research in the amount of  $108,750  for each of the first three
years of the Texas A&M License.  Failure to comply with the terms of the Rutgers
License may cause its termination, which would have a material adverse effect on
the Company.  See "Risk  Factors--Dependence  on Licenses and Sponsored Research
Agreements."

   
In the future, the Company may require additional licenses from other parties to
develop,  manufacture and market commercially viable products  effectively.  The
Company's  commercial  success will depend in part on obtaining and  maintaining
such  licenses.  There can be no assurance that such licenses can be obtained or
maintained  on  commercially  reasonable  terms,  if at all,  that  the  patents
underlying  such licenses will be valid and  enforceable or that the proprietary
nature of the technology  underlying such licenses will remain proprietary.  The
Company  presently  intends to pursue  aggressively the broadest patent coverage
possible for all of its intellectual  property.  See "Risk  Factors--Uncertainty
Regarding Patents and Proprietary Rights; TJU Patent Re-issuance Application."
    

COMPETITION

The Company is aware of estimates  that more than 300  companies are reported to
have approximately  1,250 cancer drugs under development  worldwide,  of which a
substantial  number are under  development  in the United  States.  Many of such
drugs or other substances under development involve  chemotherapeutic agents and
cancer immunotherapies and, thus, are, or may be, in direct competition with the
Company's AC Vaccine or compounds  resulting from  development  work pursuant to
the Rutgers License or the Texas A&M License.  Such future  competitor  products
and drugs may perform  more  effectively  or safely than the  Company's  product
candidates.

Many of the companies  engaged in  anticancer  research and  development  and in
acquiring  rights to the products of such  research and  development,  including
biotechnology  companies,  have  substantially  greater  financial,   technical,
scientific,  manufacturing,  marketing and other  resources than the Company and
have more experience in developing,  marketing and  manufacturing  therapeutics,
including  performing  the  preclinical  testing  and  clinical  trials that are
required for obtaining FDA and other  regulatory  approvals.  Included among the
Company's   competitors   are:   (i)  large   established   pharmaceutical   and
biotechnology  companies  with  commitments  to oncology or antiviral  research,
development  and  marketing,  including,  without  limitation,  Schering  Plough
Corporation,  Chiron  Corporation,  Bristol-Myers  Squibb and Johnson & Johnson;
(ii) smaller  biotechnology  companies with similar  strategies,  including IDEC
Pharmaceuticals,  Inc. and Biomira Diagnostics; and (iii) many development stage
companies licensing and/or developing oncology therapeutics.

In addition, many research institutes, hospitals and universities are working to
develop  products  and  processes  in the same  field of cancer  that may in the
future be in direct competition with the Company's present and future products.

A number of companies or research  institutions are developing  cancer vaccines,
including,  without limitation,  Ribi ImmunoChem  Research,  Inc. and Progenics,
Inc.,  in melanoma;  AltaRex,  Genentech  and Biomira,  in ovarian  cancer;  and
PerImmune,  Inc. and Aphton  Corporation,  in colorectal  cancer.  The principal
competitive  factors in the area of cancer  immunotherapies are (i) the efficacy
of the product and (ii) the timing of the entry of the product  into the market.
Although there is significant  competition,  to date, the Company  believes that
none of such immunotherapies have demonstrated the increase in survival over the
same  period  of time  that the  Company's  technology  has  shown in



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<PAGE>

melanoma. Although there can be no assurance, the Company also believes that its
AC Vaccine  technology  may be  applicable  to a variety of solid tumors such as
ovarian,  breast, prostate, lung and colorectal cancer and may have applications
in the treatment of acute myelogenous leukemia (AML) and therefore may not be as
limited as certain other approaches.  With respect to the timing of the entry of
the  product,  there  can be no  assurance  as to  when,  if at all,  any of the
Company's potential products will be approved. See "Risk  Factors--Technological
Uncertainty and Early Stage of Product Development",  "Government Regulation; No
Assurance of Product Approval",  "Dependence on Others For Clinical  Development
of, and Regulatory Approvals for,  Manufacturing and Marketing of Pharmaceutical
Products",   "Dependence  on  Licenses  and  Sponsored   Research   Agreements",
"Dependence  Upon Key  Personnel  and  Consultants"  and "Lack of  Manufacturing
Facilities".

MANUFACTURING AND MARKETING

The Company does not currently have the resources to commercially manufacture or
directly  market  any  products  that it may  develop.  In  connection  with its
research  and  development  activities,  the  Company  may  seek to  enter  into
collaborative  arrangements with  pharmaceutical,  medical device,  health care,
chemical  or  other  companies  to  assist  in  further  funding  as  well as in
development,  commercial  manufacturing and/or marketing of its products if such
activities are commercially feasible. These partners may also be responsible for
commercial  scale  manufacturing,  which  will be  subject  to  compliance  with
applicable FDA regulations.  The Company  anticipates that such arrangements may
involve  the  grant of  exclusive  or  semi-exclusive  rights  to sell  specific
products to specified  market segments or particular  geographic  territories in
exchange for a royalty,  joint venture,  future  co-marketing or other financial
interests.

To  date,  the  Company  has  not  entered  into  any  collaborative  commercial
manufacturing or marketing  agreements for any of its potential products.  There
can be no  assurance  that  the  Company  will be able to  enter  into  any such
arrangements  on  favorable  terms,  if at  all.  Such  collaborative  marketing
arrangements, whether licenses, joint ventures or otherwise, may result in lower
revenues  than  would  otherwise  be  generated  if the  Company  conducted  the
marketing of their own products. See "Risk  Factors--Dependence on Third Parties
for Additional Funds and for Manufacturing, Marketing and Selling."

The Company may elect to establish its own commercial  manufacturing  facilities
for the products and technologies that it may develop.  In the event the Company
decides to establish manufacturing  facilities,  the Company will be required to
hire and train significant numbers of employees and to comply with the extensive
cGMP regulations  applicable to such a facility.  The  establishment of any such
facilities and eventual expansion of operations to commercial levels, as well as
the hiring of qualified employees,  could require substantial  expenditures.  In
addition,  at least some of the Company's  products  produced at its  facilities
will  probably be regulated as  biologics.  In that event,  the Company would be
required  to file with the FDA in order to obtain an  establishment  license (or
similar  license)  for its  facilities.  Legislation  that would  eliminate  the
requirement for an establishment  license is currently  pending before Congress,
but there is no assurance that this  legislation  will be enacted.  Any delay in
the FDA's  approval of (or its  refusal to grant) such a license  would delay or
prevent  marketing  of  the  relevant  product.   See  "Risk   Factors--Lack  of
Manufacturing  Facilities"  "--Dependence on Others for Clinical Development of,
and  Regulatory  Approvals for  Manufacturing  and  Marketing of  Pharmaceutical
Products."

GOVERNMENT REGULATION

   
The research,  pre-clinical development,  clinical trials, product manufacturing
and marketing  which may be conducted by the Company is subject to regulation by
the FDA and  similar  health  authorities  in foreign  countries.  The  proposed
products and  technologies  of the Company also may be subject to certain  other
federal, state and local government regulations,  including, without limitation,
the Federal  Food,  Drug and Cosmetic  Act,  and their state,  local and foreign
counterparts.  Although  there can be no such  assurance,  the Company  does not
believe that  compliance  with such laws and  regulations  has, nor is presently
expected to have,  a material  adverse  effect on the  business of the  Company.
However,  the Company  cannot  predict  the extent of the adverse  effect on its
business or the financial  and other cost that might result from any  government
regulations  arising  out of  future  legislative,  administrative  or  judicial
action.  See "Risk  Factors--Government  Regulation;  No  Assurance  of  Product
Approval."

Generally,  the steps required before a pharmaceutical or therapeutic biological
agent may be marketed in the United States include: (i) pre-clinical  laboratory
tests, in vivo pre-clinical studies in animals, toxicity studies and formulation
studies; (ii)
    



                                       34

<PAGE>

the submission to the FDA of an IND application for human clinical testing, that
must become effective before human clinical trials commence;  (iii) adequate and
well-controlled  human  clinical  trials to establish the safety and efficacy of
the drug; (iv) the submission of a marketing application to the FDA; and (v) FDA
approval of the marketing  application  prior to any commercial sale or shipment
of the drug.

   
Pre-clinical  studies include  laboratory  evaluation of the product,  conducted
under Good Laboratory  Practice (GLP) regulations,  and animal studies to assess
the  pharmacological  activity and the potential safety and effectiveness of the
drug.  The results of the  pre-clinical  studies are submitted to the FDA in the
IND.  Unless the FDA objects to an IND, it becomes  effective 30 days  following
submission and the clinical trial described in the IND may then begin.
    

Every  clinical  trial must be  conducted  under the review and  oversight of an
institutional review board (IRB) at each institution participating in the trial.
The IRB  evaluates,  among other things,  ethical  factors,  the safety of human
subjects, and the possible liability of the institution.

Clinical trials are typically conducted in three sequential phases, although the
phases may overlap. Phase I represents the initial introduction of the drug to a
small group of healthy subjects to test for safety,  dosage  tolerance,  and the
essential  characteristics  of the drug.  Phase II involves studies in a limited
number of  patients  to test the safety and  efficacy  of the drug at  different
dosages.   Phase  III  trials  involve  large-scale  evaluation  of  safety  and
effectiveness, usually (though not necessarily) in comparison with placebo or an
existing treatment.

   
The results of the  pre-clinical and clinical trials are submitted to the FDA as
part of an  application  to market  the drug.  The  marketing  application  also
includes information  pertaining to the chemistry,  formulation,  manufacture of
the drug and each component of the final product.  The FDA review of a marketing
application  takes from one to two years on average to complete,  though reviews
of treatments for cancer and other life-threatening diseases may be accelerated.
However,  the process may take substantially  longer if the FDA has questions or
concerns about a product.  Following review,  the FDA may ultimately decide that
an application does not satisfy  regulatory and statutory criteria for approval.
In some cases,  the FDA may approve a product  but require  additional  clinical
tests following approval (i.e., Phase IV).

In addition to obtaining  FDA  approval for each  product,  each  domestic  drug
manufacturing  establishment  must be registered with, and approved by, the FDA.
Domestic manufacturing  establishments are subject to inspections by the FDA and
must comply with Good Manufacturing Practice ("GMP"). To supply products for use
in the United States, foreign manufacturing  establishments must comply with GMP
and are subject to periodic inspection by the FDA or by corresponding regulatory
agencies  in such  countries  under  reciprocal  agreements  with  the  FDA.  As
permitted  by FDA  regulations,  the M-Vax and O-Vax  phase I/II human  clinical
trials  are being  conducted  by TJU under the  supervision  of Dr.  David  Berd
pursuant  to an  FDA-approved  physician  sponsored  IND.  Following  an earlier
meeting with the FDA to discuss the clinical  results  obtained with M-Vax,  the
use of such results in support of the submission of a  Company-sponsored  IND to
the FDA, and to review its proposed  development  plan,  the Company  reviewed a
proposed  phase  III  protocol  with  FDA,  as well as its  plans  to  submit  a
Company-sponsored  IND to support the pivotal trial  program.  This IND has been
submitted  to  the  FDA,  is  currently  under  review,  and  addresses  product
characterization/manufacturing  issues  raised by FDA to ensure that all pivotal
data will support a product license application. No patients will be enrolled in
the pivotal  trial  program  until the Company  and FDA are  satisfied  that all
product issues are resolved. Depending upon the results of such clinical trials,
it is the  Company's  intention  to use the  results of these  Company-sponsored
clinical  trials along with the results of the clinical trial  conducted at TJU,
as the basis for the filing of an application  for FDA approval to market M-Vax.
Even if the Company eventually receives FDA approval of a marketing  application
to commercialize any of its products, there can be no assurance that the Company
will  be  able  to  successfully  manufacture  such  product  at a  commercially
acceptable cost.

If  marketing  approval of any  Company  product is  granted,  the Company  must
continue to comply with FDA  requirements not only for  manufacturing,  but also
for labeling,  advertising,  record keeping, and reporting to the FDA of adverse
experiences  and other  information.  In addition,  the Company must comply with
federal and state health care anti-kickback laws and other health care fraud and
abuse laws that affect the marketing of pharmaceuticals.  Failure to comply with
applicable laws and regulations  could subject the Company to  administrative or
judicial  enforcement  actions,  including but not limited to product  seizures,
injunctions,  civil  penalties,  criminal  prosecution,  refusals to
    

                                       35

<PAGE>


approve new products or withdrawal of existing  approvals,  as well as increased
product liability exposure, any of which could have a material adverse effect on
tile company's business, financial condition, or results of operations.

For clinical  investigation and marketing outside the United States, the Company
also is subject to foreign  regulatory  requirements  governing  human  clinical
trials and marketing approval for drugs. The requirements  governing the conduct
of clinical trials, product licensing, pricing and reimbursement vary widely for
European  countries  both  within and  outside the  European  Community  ("EU").
Outside  the  United  States,  the  Company's  ability  to market a  product  is
contingent  upon  receiving  a  marketing  authorization  from  the  appropriate
regulatory authority. At present,  foreign marketing  authorizations are applied
for at a national level, although within the EU certain registration  procedures
are available to companies  wishing to market their products in more than one EU
member state. If the regulatory authority is satisfied that adequate evidence of
safety, quality and efficacy has been presented, a marketing  authorization will
be granted.  The system for  obtaining  marketing  authorizations  within the EU
registration  system  is  a  dual  one  in  which  certain  products,   such  as
biotechnology  and high  technology  products  and those  containing  new active
substances,  will have  access  to a central  regulatory  system  that  provides
registration  throughout  the entire EU. Other  products  will be  registered by
national authorities in individual EU member states, operating on a principle of
mutual recognition. This foreign regulatory approval process includes, at least,
all of the risks associated with FDA approval set forth above. The Company could
possibly have greater  difficulty in obtaining any such approvals and also might
find it more difficult to protect its intellectual property abroad.

SOURCES AND AVAILABILITY OF RAW MATERIALS

The Company does not expect to encounter  significant  difficulties in obtaining
raw materials for M-Vax,  O-Vax or C-Vax, since they are primarily composed of a
readily  available  chemical  reagent,  DNP, and the  patient's own tumor cells.
Should the supply of DNP  significantly  decrease,  the  Company  may  encounter
problems preparing M-Vax, O-Vax, C-Vax, or any other AC Vaccine technology.

COMPLIANCE WITH ENVIRONMENTAL LAWS

The Company's business may be subject to regulation under federal, state, local,
and foreign laws  regarding  environmental  protection  and hazardous  substance
control.  The Company  believes that its compliance with these laws will have no
adverse impact upon its capital expenditures,  earnings or competitive position.
Federal,  state and foreign  agencies  and  legislative  bodies  have  expressed
interest in the further environmental  regulation of the biotechnology industry.
The Company is unable to estimate the extent and impact of such, if any,  future
federal, state, local legislation or administrative environmental action.

EMPLOYEES

   
The Company utilizes a product  development  strategy that includes  contracting
out its research and development,  and to a certain extent, some other functions
in order to  minimize  the  expenses  and  overhead  associated  with  full-time
employees.  Consistent  with this  strategy,  as of May 5, 1998, the Company had
seven full-time  employees,  including Jeffrey M. Jonas, M.D., its President and
Chief Executive Officer, David L. Tousley,  C.P.A., its Chief Financial Officer,
and  Ernest  W.  Yankee,   Ph.D.,  its  Executive  Vice  President.   Its  other
consultants, scientific advisors, part-time officers and directors devote only a
portion of their time to the business of the Company.  The Company believes that
it  maintains  good  relations  with  its  employees,  consultants,   scientific
advisors,   part-time  officers  and  directors.   See  "Risk  Factors--Lack  of
Management and Employees" and "--Dependence Upon Key Personnel and Consultants."
    

FACILITIES

The  Company's  executive  offices are located at 4520 Main,  Suite 930,  Kansas
City,  Missouri 64111. In October of 1996, the Company entered into a three-year
lease for approximately  2,800 square feet of office space with a monthly rental
of approximately  $5,400,  beginning in the fourth month. This lease was amended
in December 1997 to add  approximately  1,300  additional  square feet of office
space for the remainder of the original  lease term which  increased the monthly
rental by approximately $2,700.



                                       36

<PAGE>

The Company  anticipates that in the future it may own or lease its own facility
for the  manufacturing of its potential  products and has entered into a 10-year
lease  for   approximately   11,900  square  feet  of  space  in   Philadelphia,
Pennsylvania  to begin  construction  of such a  facility.  The  lease  began in
February 1998,  contains  options for expansion in 1999 and 2002 and contains an
option to terminate at the end of the fifth year. The initial  monthly rental is
approximately $10,400.

The research work of the Company is currently  being  conducted at TJU,  Rutgers
and Texas A&M pursuant to their respective license and research  agreements with
the Company.  See "Risk  Factors--Lack  of Facilities,"  --"Dependence  on Third
Parties for Additional Funds and for Manufacturing,  Marketing and Selling," and
"--Dependence  on Others for Clinical  Development of, and Regulatory  Approvals
for, and Manufacturing  and Marketing of  Pharmaceutical  Products" and "Certain
Transactions."

LEGAL PROCEEDINGS

   
An  application  for  reissue of the TJU patent is being made to address a prior
art reference which may have a material  adverse impact on the patent.  Although
the Company  believes that there is a sound basis for this reissue  application,
there can be no assurance that a patent will issue from the application, or that
any such patent will be enforceable and will not be challenged,  invalidated, or
circumvented.  See "Uncertainty  Regarding Patents and Proprietary  Rights;  TJU
Patent Re-issuance Application".
    

The Company's application for a federal trademark registration for the name AVAX
has been opposed by a third party. This opposition proceeding concerns the right
of the Company to obtain a federal  trademark  registration in the United States
Patent & Trademark Office for the name AVAX. Although the Company believes there
is a sound basis for denial of the opposition  and allowance of its  application
to register  the name AVAX,  there can be no  assurance  that the  Company  will
prevail in this  proceeding.  There is also no  assurance  that the Company will
desire  or be able to  continue  using the name AVAX at some  future  time.  The
Company  does not  believe  that an  adverse  outcome  in this  proceeding  will
materially affect its business.

The Company is not aware of any other pending or threatened legal actions which,
in the opinion of management,  based on known  information,  is likely to have a
material adverse effect on the Company's business.

RESEARCH AND DEVELOPMENT EXPENSE

   
For fiscal  years 1996 and 1997 and for the three  months  ended March 31, 1998,
the Company incurred  research and development  expense of $738,991,  $2,448,976
and $957,364 respectively.  Research and development expense for the period from
inception has been $5,758,649. See "Financial Statements." Although there can be
no assurance,  the Company  intends to spend  increasingly  more on research and
development in the foreseeable future.
    





                                       37

<PAGE>

                                   MANAGEMENT

EXECUTIVE OFFICERS AND DIRECTORS

The following table sets forth the names and positions of the executive officers
and directors of the Company:

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

Jeffrey M. Jonas, M.D.            45         Chief Executive Officer, President
                                             and Director
Edson D. de Castro                59         Director
John K.A. Prendergast, Ph.D.      44         Director
Carl Spana, Ph.D.                 35         Director
Michael S. Weiss                  32         Secretary and Director
David L. Tousley, C.P.A.          42         Chief Financial Officer
Ernest W. Yankee, Ph.D.           54         Executive Vice President

Jeffrey M. Jonas,  M.D.,  has been the Chief  Executive  Officer,  President and
Director of the Company since June 1, 1996.  Prior to joining the Company,  from
1994 to 1996, Dr. Jonas was the Vice President of Clinical  Development  and the
Chief Medical Officer of Upjohn Laboratories. From 1991 to 1994, he was the Vice
President  of  Worldwide  Pharmaceutical  Regulatory  Affairs,  the  Director of
Psychopharmacology  and the  Director  of  Clinical  Development  III for Upjohn
Company.    Prior   thereto,   Dr.   Jonas   was   a   research   and   clinical
psychopharmacologist  in the  Boston  area.  Dr.  Jonas has  authored  a book on
Prozac(TM),  and over 100 scientific articles,  abstracts and book chapters. Dr.
Jonas  received  his M.D.  from  Harvard  Medical  School in 1979 and a B.A.  in
Biology and English from Amherst College in 1975.

Mr.  Edson D. de  Castro  has been a member  of the  Board of  Directors  of the
Company since October 1993.  Since 1990,  Mr. de Castro has been  consulting for
companies and  participating as a member of certain Boards of Directors.  Mr. de
Castro  was one of five  co-founders  of Data  General  Corporation  in 1968 for
which,  from  1968 to 1989,  he  served as its  President  and  Chief  Executive
Officer,  and from  1989 to 1990,  he  served  as its  Chairman  of the Board of
Directors.  From 1995 to 1997, Mr. de Castro was the Chief Executive Officer and
Chairman  of the Board of  Directors  of  Xenometrix,  Inc.  Mr. de Castro was a
founder and Executive  Committee Member of the Massachusetts  High Tech Council.
Mr. de Castro is a Trustee  of Boston  University.  In  addition,  Mr. de Castro
serves on the Board of  Directors  of Boston Life  Sciences,  Inc. Mr. de Castro
received his B.S. in  Electrical  Engineering  from the  University of Lowell in
1960.

John K.A.  Prendergast,  Ph.D.,  has been a director of the  Company  since July
1996. Dr.  Prendergast has served as President and principal of Summercloud Bay,
Inc., a  biotechnology-consulting  firm, since 1993. He is a co-founder and/or a
member of the Board of Ingenex,  Inc.,  Atlantic  Pharmaceuticals,  Inc.,  Optex
Ophthamologics,  Inc., Gemini Gene Therapies, Inc., Channel Therapeutics,  Inc.,
Xenometrix, Inc., Avigen, Inc., and Palatin Technologies, Inc. From October 1991
through  December 1997,  Dr.  Prendergast  was a Managing  Director of Paramount
Capital  Investments,  LLC and a Managing  Director of The Castle Group Ltd. Dr.
Prendergast received his M.Sc. and Ph.D. from the University of New South Wales,
Sydney,  Australia and a C.S.S.  in  Administration  and Management from Harvard
University.

Carl Spana,  Ph.D.,  has been a Director of the Company since September 1995 and
was its  Interim  President  from  August 1995 to June 15,  1996.  Dr.  Spana is
currently an Executive  Vice President and Chief  Technology  Officer of Palatin
Technologies,  Inc.  Since June 1996,  Dr.  Spana has served as  Executive  Vice
President  and Chief  Technology  Officer of RhoMed  Incorporated.  From 1993 to
1996, Dr. Spana was responsible for discovering, evaluating, and commercializing
new biotechnologies through his work at Paramount Capital Investments, LLC where
he was an Associate Director. Dr. Spana has been a co-founder of several private
biotechnology  firms.  From 1991 to 1993, Dr. Spana was a Research  Associate at
Bristol-Myers  Squibb where he was involved in scientific  research in the field
of immunology that led to the initiation of several new drug discovery programs.
Dr.  Spana  currently  is  a  member  of  the  Board  of  Directors  of  Palatin
Technologies,  Inc. Dr. Spana  received his Ph.D. in Molecular  Biology from The
Johns Hopkins University and a B.S. in Biochemistry from Rutgers University.



                                       38

<PAGE>

Michael S. Weiss,  Esq., has been a Director of the Company since March 1996 and
Secretary of the Company  since  September  1995.  Mr. Weiss is Senior  Managing
Director of Paramount Capital, Inc. and certain of its affiliates,  and has been
employed by Paramount Capital,  Inc. since 1993. Prior to that, Mr. Weiss was an
attorney  with  Cravath,  Swaine & Moore.  Mr.  Weiss is a  Director  of Pacific
Pharmaceuticals, Inc. and Palatin Technologies, Inc., Vice Chairman of the Board
of Genta,  Inc.,  Chairman  of the Board of  Directors  of  Procept,  Inc.,  and
Secretary of Atlantic Pharmaceuticals,  Inc., each of which is a publicly traded
biotechnology  company.  In  addition,  Mr.  Weiss  is  a  Director  of  several
privately-held  biotechnology  companies.  Mr.  Weiss  received  his  J.D.  from
Columbia  University  School  of Law  and a  B.S.  in  Finance  from  the  State
University of New York at Albany.

David L. Tousley,  C.P.A.,  has been the Chief Financial  Officer of the Company
since  October 1, 1996.  Prior to joining the  Company,  from 1989 to 1996,  Mr.
Tousley  was the  Controller  and  then  the  Vice  President  for  Finance  and
Administration of Connaught  Laboratories,  Inc. Mr. Tousley received his M.B.A.
in Accounting  from Rutgers  University  Graduate School of Business in 1978 and
his B.A. in English from Rutgers College in 1977.

Ernest W. Yankee,  Ph.D.,  has been an Executive  Vice  President of the Company
since October 1, 1996.  Prior to joining the Company,  he served as the Director
of Clinical  Development of the Upjohn  Company from 1994 to 1996.  From 1990 to
1994, he was the Director of Preclinical  Development-Scientific  Affairs of the
Upjohn Company.  Dr. Yankee received his Ph.D. from the University of California
at Los Angeles in 1970 and his B.A. in Chemistry  from La Sierra  University  in
1965.

All directors hold office until the next annual meeting of  stockholders  of the
Company and until their  successors  have been elected and  qualified.  Officers
serve at the discretion of the Board of Directors.  The Company's Certificate of
Incorporation   and  bylaws   provide  that  directors  and  officers  shall  be
indemnified  against  liabilities  arising  from their  service as  directors or
officers to the fullest  extent  permitted by the laws of the State of Delaware,
which  generally  requires that the individual act in good faith and in a manner
he or she  reasonably  believes to be in, or not opposed to, the Company's  best
interests.

The Company has only six full time employees. Mr. Weiss currently devotes only a
portion of his time to the Company as Corporate Secretary and does not currently
receive compensation from the Company for such services. Certain of the officers
and  directors  of the  Company  currently  do and may from  time to time in the
future serve as officers or directors of other biopharmaceutical or biotechnical
companies.  There can be no assurance that such other  companies will not in the
future have interest in conflict with those of the Company. See "Risk Factors --
No  Assurance  of  Identification   of  Additional   Projects,"  and  "--Certain
Interlocking Relationships; Potential Conflicts of Interest."

BOARD COMMITTEES

The Company's Board of Directors has a Compensation Committee.  The Compensation
Committee  sets the  compensation  for certain of the  Company's  personnel  and
administers  the Company's  1992 Stock Option Plan. The  Compensation  Committee
consists of Dr. Spana and Mr. Weiss.

The  Company's  Board  of  Directors  also  has an Audit  Committee.  The  Audit
Committee   reviews  the  professional   services   provided  by  the  Company's
independent  accountants  and  monitor  the scope and the  results of the annual
audit,  reviews  proposed  changes in the  Company's  financial  and  accounting
standards and principles, and the Company's policies and procedures with respect
to  its  internal   accounting,   auditing  and  financial   controls  and  make
recommendations  to the Board of Directors on the engagement of the  independent
accountants,  as well as other matters that may come before it or as directed by
the Board of Directors.  The Audit Committee is composed of Dr. Jonas, Dr. Spana
and Mr. de Castro.





                                       39

<PAGE>

SCIENTIFIC ADVISORY BOARD

The Company has a Scientific  Advisory Board that consists of  individuals  with
extensive  experience in the Company's  fields of interest.  It is expected that
the Scientific  Advisory Board members will meet as a board with  management and
key  scientific  employees of the Company on a semi-annual  basis and in smaller
groups or individually on an informal basis.  The Company  anticipates  that the
Scientific  Advisory  Board  members  will  assist the  Company  in  identifying
scientific and product  development  opportunities,  in reviewing and evaluating
scientists and other employees. Presently, the Scientific Advisory Board members
consists of:


David Berd, M.D. -- Chairman    Clinical  Oncologist  at  the  Jefferson  Cancer
                                Center of TJU and  Inventor of the  Company's AC
                                Vaccine technology.

Edmond J. LaVoie, Ph.D.         Professor of Medicinal Chemistry and Chairman of
                                the  Department of  Pharmaceutical  Chemistry at
                                Rutgers University.

Margalit Mokyr, Ph.D.           Professor of  Biochemistry  at the University of
                                Illinois College of Medicine.

Stephen H. Safe, Ph.D.          Sid Kyle  Professor of  Toxicology  at Texas A&M
                                University.

Robert J. Belt, M.D.            Medical  Director at the Peet  Cancer  Center of
                                Saint Luke's Hospital in Kansas City.

Drs. Berd and LaVoie are  compensated  pursuant to their  consulting  agreements
with  the  Company.  See  "Employment  Agreements,   Termination  and  Severance
Arrangements."  Drs. LaVoie,  Mokyr,  Safe and Belt each recently entered into a
Scientific Advisory Board Agreement with the Company, where they agreed to serve
on the Scientific Advisory Board for a period of two years, subject to automatic
annual  renewal  periods.  Pursuant  to  their  respective  agreements  with the
Company,  each such SAB member shall receive $2,000 per meeting, and may, in the
discretion  of the Board of Directors of the Company or  Compensation  Committee
thereof,  receive  additional  compensation  in the form of options to  purchase
shares of Common Stock of the Company or otherwise.

Members of the Scientific  Advisory Board may be employed by or have  consulting
agreements  with entities other than the Company,  some of which may conflict or
compete with the Company, or which may, limit a particular member's availability
to the Company.  Certain of the institutions with which the Scientific  Advisory
Board members are affiliated may have  regulations or policies which are unclear
with respect to the ability of such personnel to act as part-time consultants or
in other capacities for a commercial enterprise.  Regulations or policies now in
effect or adopted  in the  future  might  limit the  ability  of the  Scientific
Advisory Board members to consult with the Company.  The loss of the services of
certain of the Scientific  Advisory Board members could have a material  adverse
effect on the Company.

Although each of the members of the Scientific  Advisory Board has the customary
contractual  obligation  to keep  confidential  and not to disclose  nor use any
confidential  or  proprietary  information  of  the  Company's,   inventions  or
processes  discovered  by any  Scientific  Advisory  Board  member,  in  certain
instances  or unless  otherwise  agreed,  will not  become the  property  of the
Company  but  will  remain  the  property  of such  person  or of such  person's
full-time  employers.  In addition,  the institutions  with which the Scientific
Advisory Board members are  affiliated may make available the research  services
of their  scientific  and other  skilled  personnel,  including  the  Scientific
Advisory  Board members to entities  other than the Company.  In rendering  such
services,  such  institutions  may  be  obligated  to  assign  or  license  to a
competitor of the Company patents and other  proprietary  information  which may
result  from such  services,  including  research  performed  by an  advisor  or
consultant for a competitor of the Company.




                                       40

<PAGE>

BOARD COMPENSATION

In September 1997, as compensation  for services  rendered and to be rendered as
members of the Company's  Board of Directors,  the Company issued to each of Mr.
de Castro, Dr. Spana, Dr. Prendergast and Mr. Weiss,  options to purchase 40,000
shares of Common Stock,  exercisable  for seven years at an exercise price equal
to $4.50 per share.  Such options shall vest at a rate of 1/16 per quarter for a
period of four years,  commencing  on December  1, 1997.  The Company  currently
intends to compensate its directors on an annual basis,  at the election of each
such director (which election must be made annually by December 15th of the year
immediately  prior  to the  year in  which  such  compensation  is  earned  (the
"Election Date")), as follows:  (i) $ 10,000,  payable quarterly in arrears (the
"Director's  Fee"),  or (ii) options to purchase that number of shares of Common
Stock in an amount equal to the result  obtained by  multiplying  (A) two by (B)
the result  obtained by dividing (x) the Director's Fee by (y) the closing price
of the Common Stock on the Election Date, or the last business day preceding the
Election Date (the "Closing  Price");  which options shall vest at a rate of 1/4
per  quarter  over a one-year  period and shall be  exercisable  for a period of
seven years at an exercise price equal to the Closing Price.  All directors have
elected to be  compensated  for their 1998  services  with  options to  purchase
common stock and  accordingly,  in December,  1997,  were each issued options to
purchase  5,161 shares of Common Stock with the  foregoing  terms at an exercise
price of $3.875 per share of Common  Stock.  In the event of a change of control
(as defined in the applicable  stock option  agreements),  each of the foregoing
outstanding stock options,  generally,  will immediately vest in full, either at
the time of such event, or upon the subsequent  termination of such individual's
service with AVAX.

Dr. Jonas receives no compensation  for service on the Board of Directors or any
committee  thereof.  All  directors  of the  Company are  reimbursed  for travel
expenses incurred in attending board and committee meetings.

The Company may retain  additional  board members in the future.  Certain of the
directors  may have  consulting  agreements  and/or  received  stock  grants  in
consideration for services rendered to the Company, other than services rendered
as  members  of  the  Board.   See   "Executive   Compensation"   and   "Certain
Transactions."

EXECUTIVE COMPENSATION

   
The following Summary  Compensation Table sets forth the compensation  earned by
the persons serving as the Company's chief executive officer and the other named
executive officers (collectively the "Named Officers") for the last three fiscal
years. No other executive officer earned  compensation in excess of $100,000 for
services  rendered to the  Company  for any such  fiscal  year and no  executive
officer,  who would have  otherwise  been  included in such  table,  resigned or
terminated  employment during that year. With respect to the persons and periods
covered in the following  table, the Company made no restricted stock awards and
had no long-term incentive plan pay-outs.
    

<TABLE>
                                                      Summary Compensation Table
                                                          Annual Compensation

<CAPTION>
                                                                                              Shares of Common
Name and Principal                                                     Restricted Common      Stock Underlying         All Other   
     Position               YEAR      Salary ($)         Bonus ($)     Stock Award(s) ($)     Options/SARs (#)     Compensation ($)
- ------------------          ----      ----------         ---------     ------------------     ----------------     ----------------
<S>                         <C>       <C>                <C>                  <C>                 <C>                 <C>
Jeffrey M. Jonas, M.D. --
President and Chief
Executive Officer           1997      $214,656.63        $100,000             -0-                 150,000.0                -0-

                            1996      $117,712.29        $12,5001             -0-                 318,872.5                -0-

David L. Tousley, C.P.A.
- -- Chief Financial Officer  1997      $154,500.00         $50,000             -0-                    60,000           $62,570.542

                            1996       $35,288.44             -0-             -0-                   125,000                -0-
</TABLE>



                                       41

<PAGE>

<TABLE>
<S>                         <C>       <C>                 <C>                 <C>                   <C>               <C>
Ernest W. Yankee, Ph.D. -
Executive Vice President    1997      $150,750.10         $50,000             -0-                    60,000           $70,631.273

                            1996       $36,250.02             -0-             -0-                   125,000                -0-
</TABLE>

1    Represents  amount paid to Dr. Jonas as a signing bonus in connection  with
     his  letter  of   employment.   See   "Management--Employment   Agreements;
     Termination and Severance Arrangements."

2    Includes  $62,287.04 paid in connection with Mr.  Tousley's  relocation and
     temporary  living  expenses in accordance with his letter of employment and
     $283.50 in group term life  insurance  premiums for  insurance  coverage in
     excess of $50,000, paid by the Company.

3    Includes  $69,906.27 paid in connection  with Dr.  Yankee's  relocation and
     temporary  living  expenses in accordance with his letter of employment and
     $725.00 in group term life  insurance  premiums for  insurance  coverage in
     excess of $50,000, paid by the Company.

The following  table sets forth  certain  information  concerning  stock options
granted  during the fiscal year ended  December 31, 1997 to the Named  Officers.
The Company does not grant stock appreciation rights.

<TABLE>
<CAPTION>
                                                          Option/SAR Grants In Last Fiscal Year

                                    Shares of Common Stock     % of Total Options/SARs
                                    Underlying Options/SARs    Granted to Employees in       Exercise or Base
Name                                Granted (#)                Fiscal Year                   Price ($/share)      Expiration Date
- ---------------------------------------------------------------------------------------------------------------------------------
<S>                                 <C>                        <C>                           <C>                  <C>    
Jeffrey M. Jonas, M.D.              150,000                    40.54%                        4.50                 July 1, 2004

David L. Tousley, C.P.A.            60,000                     16.22%                        4.50                 July 1, 2004

Ernest W. Yankee, Ph.D.             60,000                     16.22%                        4.50                 July 1, 2004
</TABLE>

The following table sets forth certain information concerning stock options held
by the Named  Officers on December 31, 1997. No stock options were  exercised by
the Named Officers during the fiscal year ended December 31, 1997.

<TABLE>
<CAPTION>
                                    Aggregate Option Exercises In Last Fiscal Year and Fiscal Year-End Option Values

                                                             Number of Securities                     Value of Unexercised
                                                            Underlying Unexercised                    In-The-Money Options
                                                       Options at December 31, 1997 (#)           at December 31, 1997 ($) (1)
                                                       --------------------------------           ----------------------------
                             Shares Acquired on
Name                         Exercise (#)              Exercisable        Unexercisable          Exercisable       Unexercisable
- --------------------------------------------------------------------------------------------------------------------------------
<S>                                    <C>               <C>                 <C>                 <C>                <C>        
Jeffrey M. Jonas, M.D.                 -0-               132,077             336,795             $321,363.19        $535,605.31

David L. Tousley, C.P.A.               -0-                35,000             150,000              $83,984.37        $251,953.13

Ernest W. Yankee, Ph.D.                -0-                35,000             150,000              $83,984.37        $251,953.13
</TABLE>

(1) Value is based on the  difference  between  the  option  exercise  price and
$3.6875,  the fair market  value of the Common Stock on December 31, 1997 (based
upon the closing price on such day on the Nasdaq SmallCap Market), multiplied by
the number of shares of Common Stock issuable upon exercise of the options.

                                       42

<PAGE>

EMPLOYMENT AGREEMENTS; TERMINATION AND SEVERANCE ARRANGEMENTS

On May 17, 1996,  the Company  entered into a letter of  employment  (the "Jonas
Employment  Letter")  with Dr.  Jeffrey M. Jonas,  pursuant  to which Dr.  Jonas
became the President,  Chief Executive Officer and a Director of the Company for
an initial  term of four years,  effective  as of June 1, 1996.  Pursuant to the
terms of the Jonas Employment Letter, Dr. Jonas will receive an annual salary of
$200,000, in addition to a signing bonus of $12,500. Dr. Jonas will also receive
a minimum annual bonus of $25,000 at the end of the first year of his employment
and an additional discretionary bonus of up to $175,000. Dr. Jonas also received
options to acquire  318,872.5  shares of Common  Stock at an  exercise  price of
$1.00.  Such  options  will vest at a rate of 1/16 per quarter  over a four-year
period, and are exercisable for a period of seven years. In June 1997, Dr. Jonas
received a bonus of $100,000 and his annual salary was increased to $225,000. In
July 1997, Dr. Jonas received options to acquire an additional 150,000 shares of
Common Stock at an exercise price of $4.50 per share.  Such options will vest at
a rate of 1/12 per quarter over a three-year  period,  and are exercisable for a
period of seven  years.  The Jonas  Employment  Letter  also  provides  that the
Company and Dr.  Jonas intend to enter into a more formal  employment  agreement
which will contain,  among other things,  severance arrangements and non-compete
provisions.  Dr. Jonas will also be eligible for  additional  stock  options and
bonuses  based  upon  outstanding  performance.  In the  event  that a Change of
Control (as defined in the Jonas  Employment  Letter)  occurs and,  prior to the
expiration  of the  initial  term of the Jonas  Employment  Letter,  Dr.  Jonas'
employment thereunder is terminated by the Company without cause or by Dr.
Jonas with  cause,  all options  previously  granted to Dr.  Jonas which  remain
unvested will immediately vest.

On September  13, 1996,  the Company  entered into a letter of  employment  (the
"Tousley  Employment  Letter")  with  David L.  Tousley,  pursuant  to which Mr.
Tousley became the Chief Financial Officer of the Company for an initial term of
four years.  Pursuant to the terms of the Tousley Employment Letter, Mr. Tousley
will  receive an annual  salary of  $150,000.  Mr.  Tousley  will also receive a
minimum  annual bonus of $25,000 at the end of the first year of his  employment
and an  additional  discretionary  bonus of up to  $125,000.  Mr.  Tousley  also
received  options to acquire 125,000 shares of Common Stock at an exercise price
of $1.00 per share.  In July 1997,  Mr. Tousley  received  options to acquire an
additional  60,000  shares of  Common  Stock at an  exercise  price of $4.50 per
share. All such options will vest at a rate of 1/16 per quarter over a four-year
period,  and are exercisable for a period of seven years. The Tousley Employment
Letter also  provides  that the Company and Mr.  Tousley  intend to enter into a
more  formal  employment  agreement  which will  contain,  among  other  things,
severance  arrangements  and non-compete  provisions.  Mr. Tousley shall also be
entitled  to such  additional  compensation  in the form of  bonuses,  raises or
otherwise as the Board of Directors of the Company may  determine.  In the event
that a Change of Control (as defined in the Tousley  Employment  Letter)  occurs
and,  prior to the  expiration  of the initial  term of the  Tousley  Employment
Letter, Mr. Tousley's employment thereunder is terminated by the Company without
cause or Mr. Tousley with cause, all options  previously  granted to Mr. Tousley
which remain unvested will immediately vest.

On September  13, 1996,  the Company  entered into a letter of  employment  (the
"Yankee Employment Letter") with Ernest W. Yankee,  Ph.D., pursuant to which Dr.
Yankee became an Executive  Vice President of the Company for an initial term of
four years.  Pursuant to the terms of the Yankee Employment  Letter,  Dr. Yankee
will  receive an annual  salary of  $145,000.  Dr.  Yankee  will also  receive a
minimum  annual bonus of $25,000 at the end of the first year of his  employment
and an additional discretionary bonus of up to $83,750. Dr. Yankee also received
options to acquire  125,000 shares of Common Stock at an exercise price of $1.00
per share.  In July 1997, Dr. Yankee  received  options to acquire an additional
60,000 shares of Common Stock at an exercise price of $4.50 per share.  All such
options will vest at a rate of 1/16 per quarter over a four-year period, and are
exercisable  for a period of seven  years.  The Yankee  Employment  Letter  also
provides  that the  Company  and Dr.  Yankee  intend to enter into a more formal
employment  agreement  which  will  contain,   among  other  things,   severance
arrangements  and non-compete  provisions.  Dr. Yankee shall also be entitled to
such additional  compensation in the form of bonuses, raises or otherwise as the
Board of Directors of the Company may  determine.  In the event that a Change of
Control (as defined in the Yankee  Employment  Letter)  occurs and, prior to the
expiration of the initial term of the Yankee  Employment  Letter,  Dr.  Yankee's
employment  thereunder  is  terminated  by the Company  without  cause or by Dr.
Yankee with cause,  all options  previously  granted to Dr.  Yankee which remain
unvested will immediately vest.


                                       43

<PAGE>

On February 22, 1996,  the Company  entered  into a  consulting  agreement  (the
"Spana  Consulting  Agreement")  with Dr.  Carl Spana,  a Director  and the then
Interim  President of the Company.  Pursuant to the Spana Consulting  Agreement,
Dr.  Spana is entitled  to a  consulting  fee of $25,000 per annum  payable on a
monthly basis,  commencing upon the  consummation of the Series B Offering.  The
Spana  Consulting  Agreement  is for an  initial  term of  three  years,  and is
renewable for one year terms  thereafter  at the  discretion of both parties and
may be terminated  upon 30 days' notice by either party.  Dr.  Spana's tenure as
Interim  President  of the Company  included  the period from March 1996 to June
1996,  when the Company did not have a Chief Executive  Officer.  At the time of
Dr.  Jonas'  appointment  as the President  and Chief  Executive  Officer of the
Company, Dr. Spana resigned from his position as Interim President. See "Certain
Transactions."

In May 1996, the Company entered into a consulting agreement with Dr. David Berd
(the "Berd Consulting  Agreement").  Pursuant to such consulting agreement,  Dr.
Berd is entitled to a $36,000 per year consulting fee payable on a monthly basis
accruing  from  January  1,  1996,  the  payment  of  which  commenced  upon the
consummation of the Series B Offering.  The Berd  Consulting  Agreement is for a
term of three years subject to early  termination  upon the happening of certain
events. If Dr. Berd's consulting agreement is terminated without cause, Dr. Berd
will be entitled to six months' severance pay. In addition,  Dr. Berd has agreed
to serve as Chairman of the Company's Scientific Advisory Board.

In July 1997, the Company  entered into a consulting  agreement with a member of
its  Scientific  Advisory  Board,  Dr. Edmond J. LaVoie (the "LaVoie  Consulting
Agreement").  Pursuant to such consulting agreement, Dr. LaVoie is entitled to a
consulting fee of $20,000 per annum, payable quarterly.  In addition, Dr. LaVoie
received  options to acquire  30,000 shares of Common Stock,  exercisable  for a
period of seven  years at an  exercise  price of $4.50  per  share.  The  LaVoie
Consulting Agreement is for an initial term of three years, and is renewable for
one year periods thereafter upon the mutual agreement of the parties.




                                       44
<PAGE>

                              CERTAIN TRANSACTIONS

Pursuant  to a  private  offering  held  in  May  and  June  1996,  the  Company
consummated  an offering of Series B Preferred  Stock (the  "Series B Offering")
pursuant to which the Company raised  aggregate gross proceeds of  approximately
$25,800,000. In connection with services rendered by Paramount Capital, Inc., as
placement  agent  ("Paramount"  or the  "Placement  Agent"),  for the  Series  B
Offering,  and  pursuant to a placement  agency  agreement  entered  into by the
Company and the  Placement  Agent,  the Company  paid the  Placement  Agent cash
commissions of approximately  $2,324,000, a non-accountable expense allowance of
approximately  $1,033,000 and placement warrants ("Series B Placement Warrants")
to acquire approximately 25,820 shares of Series B Preferred Stock,  exercisable
until June 11, 2006 at an exercise price of $110 per share of Series B Preferred
Stock. See "Description of Securities."

Pursuant to the placement  agency  agreement for the Series B Offering,  on June
12, 1996, the Company and the Placement Agent entered into a Financial  Advisory
Agreement,  pursuant  to which the  Placement  Agent  will act as the  Company's
financial  advisor.  Such  engagement  provides  that the  Placement  Agent will
receive a monthly retainer of $4,000 per month for a minimum of 24 months,  plus
expenses and success fees.

On October 20,  1995,  the  Company  entered  into an  Engagement  &  Technology
Acquisition Agreement with The Castle Group, LLC ("The Castle Group"), which may
be deemed an affiliate of both the Company and the Placement Agent,  pursuant to
which The Castle Group  identified,  negotiated and acquired for the Company the
TJU License.  In  consideration  for the conveyance of the license,  TJU and Dr.
Berd  were  both  granted  229,121.5  shares  of  Common  Stock.  In  connection
therewith,  The Castle Group and its designees  were granted and sold  916,485.5
shares of Common  Stock of the  Company at a price of $.004 per share.  Prior to
the  acquisition  of the TJU License,  the Company had no  technological  assets
other  than  it's  former  lead  product  under  development,  which was sold in
December 1995.

Dr.  Lindsay A.  Rosenwald,  a substantial  shareholder  of the Company,  is the
Chairman  and sole  shareholder  of each of the  Placement  Agent and  Paramount
Capital Investments,  LLC. Dr. Rosenwald personally  collateralized loans to the
Company from NatWest Bank N.A., pursuant to which the Company incurred principal
and interest  indebtedness of approximately  $55,000. Such indebtedness was paid
in full as of June 30, 1996. Dr. Rosenwald also extended a line of credit to the
Company. As of June 30, 1996, the Company paid the outstanding  principal amount
and  accrued  interest  under  such  line of  credit,  which  was  approximately
$250,000.  In addition,  in 1995 and 1996,  Paramount acted as placement  agent,
pursuant to a placement agency agreement, for a bridge financing for the Company
as to which Paramount was paid $90,000 in commissions  and received  warrants to
purchase  31,250  shares of Common  Stock.  Two of the investors in these bridge
financings  were  private  investment  funds  managed by a company for which Dr.
Rosenwald is President.  Also,  Michael S. Weiss,  Director and Secretary of the
Company,  is a Senior  Managing  Director of  Paramount  and General  Counsel of
Paramount Capital  Investments,  LLC. Wayne Rubin, at that time the Treasurer of
the Company,  is Chief  Financial  Officer of Paramount  and  Paramount  Capital
Investments,  LLC. Dr. Carl Spana, a Director of the Company, was at that time a
Vice President of Paramount Capital Investments, LLC. Dr. John K.A. Prendergast,
also a Director of the  Company,  is a Managing  Director of  Paramount  Capital
Investments, LLC.

In  consideration  of services  rendered on behalf of the Company in  connection
with the  acquisition and  negotiation of the Rutgers  License,  on February 13,
1997, the Company agreed to pay Samuel P. Wertheimer,  Ph.D.,  $25,000, and Carl
Spana, Ph.D., $15,000. In addition,  the Company agreed to issue to each of Drs.
Wertheimer  and Spana  warrants to purchase  6,375  shares of Common Stock at an
exercise price of $6.00 per share, exercisable for seven years. In consideration
of services rendered on behalf of the Company in connection with the acquisition
and  negotiation  of the Texas A&M License,  on February  13, 1997,  the Company
agreed to pay Fred Mermelstein,  Ph.D.,  $40,000 and to issue to Dr. Mermelstein
warrants to purchase 12,750 shares of Common Stock at an exercise price of $6.00
per share,  exercisable  for seven years.  Drs.  Wertheimer and  Mermelstein are
employees of Paramount Capital Investments,  LLC. Dr. Spana is a Director of the
Company.

On March 17, 1998, the Company entered into a consulting  agreement with Timothy
McInerney,  pursuant  to which  the  Company  agreed  to issue to Mr.  McInerney
options to purchase 50,000 shares of Common Stock at an exercise price of $4.00,
exercisable for seven years. Mr. McInerney is an employee of Paramount.



                                       45

<PAGE>

Pursuant to the Company's  Certificate of Incorporation and bylaws,  the Company
has agreed to indemnify the Directors and Officers of the Company to the maximum
extent   permissible  under  Delaware  law.  Insofar  as   indemnification   for
liabilities  arising  under  the  Securities  Act of  1933  (the  "Act")  may be
permitted to directors, officers and controlling persons of the Company pursuant
to the  foregoing,  or  otherwise,  the Company has been  advised  that,  in the
opinion of the  Commission,  such  indemnification  is against  public policy as
expressed in the Act and is, therefore, unenforceable.



                                       46

<PAGE>

                             PRINCIPAL STOCKHOLDERS

The  following  table sets  forth,  as of the date of this  Prospectus,  certain
information  regarding the beneficial  ownership of the Common Stock (i) by each
person known by the Company to be the beneficial owner of more than five percent
of the  outstanding  shares  of the  Common  Stock,  (ii) by  each of the  named
executive  officers  and  directors of the Company and (iii) by all officers and
directors of the Company as a group.

<TABLE>
<CAPTION>
Name and Address of Beneficial                                         Number of          Percentage of Class
           Owner (1)                         Title of Stock              Shares           Beneficially Owned
           ---------                         --------------              ------           ------------------
   
<S>                                        <C>                         <C>                      <C>   
Lindsay A. Rosenwald, M.D. (2)             Common Stock                773,056                  15.70%
787 Seventh Avenue,                        Series B Preferred           10,000 (3)                 *
44th Floor
New York, NY 10019

Peter K. Hilal, M.D. (4)
60 East 42nd Street                        Common Stock                280,500                   5.70%
Suite 1946
New York, NY 10165

Jeffrey M. Jonas, M.D. (5)                 Common Stock                209,436                   4.08%

Carl Spana, Ph.D. (6)                      Common Stock                 74,998                   1.52%

John K.A. Prendergast, Ph.D. (7)           Common Stock                 74,998                   1.52%

Edson D. de Castro (8)                     Common Stock                 40,081                     *

Michael S. Weiss, Esq. (9)                 Common Stock                110,798                   2.25%

David L. Tousley, C.P.A. (10)              Common Stock                 69,688                   1.40%

Ernest W. Yankee, Ph.D. (10)               Common Stock                 69,688                   1.40%

All officers and directors as a group      Common Stock                649,687                  12.16%
(7 persons)                                Series B Preferred            -0-                       *
    
</TABLE>

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

*    Represents less than 1%.

(1) Beneficial  ownership is determined in accordance with rules  promulgated by
the Securities and Exchange Commission,  and include voting and investment power
with  respect  to shares of Common  Stock.  Shares of Common  Stock  subject  to
options or warrants  currently  exercisable or exercisable within 60 days of the
date of this  Prospectus,  are deemed  outstanding  for computing the percentage
ownership of the person  holding  such  options or warrants,  but are not deemed
outstanding  for purposes of  computing  the  percentage  ownership of any other
person.

(2) Includes  199,314 shares of Common Stock owned by Dr.  Rosenwald's  wife and
trusts  in favor of his  minor  children.  Dr.  Rosenwald  disclaims  beneficial
ownership of such shares.  Excludes (i) 17,000  shares of Common Stock  issuable
upon exercise of Bridge Placement Warrants and (ii) approximately 320,949 shares
of Common Stock issuable upon  conversion of shares of Series B Preferred  Stock
issuable upon exercise of Series B Placement Warrants. Includes 61,250 shares of
Common  Stock  owned by The  Aries  Fund,  A Cayman  Island  Trust and The Aries
Domestic Fund, L.P.  (collectively,  the "Funds"),  two private investment funds
that are managed by a company of which Dr. Rosenwald is President,  but excludes
an  aggregate of 298,211  shares of Common Stock  issuable  upon  conversion  of
shares of Series B Preferred  Stock held  directly by such  entities or issuable
upon exercise of Series B Placement  Warrants and Bridge Placement Warrants held
by such entities.  Dr. Rosenwald disclaims  beneficial  ownership of such shares
owned by the Funds, except to the extent of his pecuniary interest, if any.



                                       47

<PAGE>

(3)  Represents  shares of Series B  Preferred  Stock  owned by the  Funds.  Dr.
Rosenwald  disclaims  beneficial  ownership  of such shares  owned by the Funds,
except to the extent of his pecuniary interest, if any.

(4) Includes 25,050 shares of Common Stock owned directly by Hilal Capital,  LP,
77,340  shares of Common  Stock  owned  directly by Hilal  Capital,  QP, LP, and
178,110  shares of Common Stock  managed by Hilal  Capital  Management,  LLC and
owned directly by Hilal Capital International, Ltd. and a third party account of
Hilal  Capital  Management,  LLC,  based solely upon the  Company's  review of a
Schedule 13G as filed with the  Securities  and Exchange  Commission on April 6,
1998.

   
(5)  Represents  shares that Dr. Jonas may acquire within 60 days of the date of
this Prospectus,  upon the exercise of options granted pursuant to his letter of
employment.  Excludes  259,436  shares of Common Stock issuable upon exercise of
options granted  pursuant to his letter of employment  which are not exercisable
within 60 days of the date of this Prospectus.

(6) Includes  10,081 shares of Common Stock that Dr. Spana may acquire within 60
days of the date of this  Prospectus  upon the  exercise  of options  granted as
board compensation. Excludes 35,080 shares of Common Stock issuable to Dr. Spana
upon exercise of options granted as board compensation which are not exercisable
within 60 days of the date of this Prospectus.

(7)  Includes  10,081  shares of Common Stock that Dr.  Prendergast  may acquire
within  60 days of the date of this  Prospectus  upon the  exercise  of  options
granted as board  compensation.  Excludes 35,080 shares of Common Stock issuable
to Dr.  Prendergast upon exercise of options granted as board compensation which
are not exercisable within 60 days of the date of this Prospectus.

(8)  Represents  shares of Common Stock that Mr. de Castro may acquire within 60
days of the date of this  Prospectus,  including  10,081  shares of Common Stock
that Mr. de Castro  may  acquire  within 60 days of the date of this  Prospectus
upon the  exercise of options  granted as board  compensation.  Excludes  35,080
shares of Common Stock  issuable Mr. de Castro upon exercise of options  granted
as board compensation which are not exercisable within 60 days of April 7, 1998.

(9) Excludes (i) 1,500 shares of Common Stock  issuable  upon exercise of Bridge
Placement Warrants and (ii) approximately 45,180 shares of Common Stock issuable
upon  conversion of shares of Series B Preferred Stock issuable upon exercise of
Series B Placement  Warrants.  Includes  10,081  shares of Common Stock that Mr.
Weiss may acquire  within 60 days of April 7, 1998 upon the  exercise of options
granted as board  compensation.  Excludes 35,080 shares of Common Stock issuable
to Mr. Weiss upon exercise of options  granted as board  compensation  which are
not exercisable within 60 days of April 7, 1998.

(10)  Represents  shares that Mr. Tousley and Dr. Yankee each may acquire within
60 days of the date of this  Prospectus and excludes  115,312 shares issuable to
each of Mr. Tousley and Dr. Yankee not exercisable within 60 days of the date of
this Prospectus upon exercise of options  granted  pursuant to their  respective
letters of employment.
    





                                       48

<PAGE>

                            DESCRIPTION OF SECURITIES

   
The Company is authorized to issue up to 50,000,000  shares of Common Stock, par
value $.004 per share, and 5,000,000 shares of preferred stock, par value,  $.01
per share, of the Company.  As of May 5, 1998,  4,923,570 shares of Common Stock
and 191,077 shares of Series B Preferred Stock were issued and outstanding.
    

COMMON STOCK

Each  holder of Common  Stock of the  Company is  entitled  to one vote for each
share held of record.  There is no right to cumulative  voting of shares for the
election of directors. The shares of Common Stock are not entitled to preemptive
rights and are not subject to  redemption  or  assessment.  Each share of Common
Stock is entitled  to share  ratably in  distributions  to  shareholders  and to
receive  ratably such dividends as may be declared by the Board of Directors out
of funds legally available therefor. Upon liquidation, dissolution or winding up
of the Company,  the holders of Common Stock are entitled to receive,  pro-rata,
the assets of the  Company  which are  legally  available  for  distribution  to
shareholders.  The issued and  outstanding  shares of Common  Stock are  validly
issued, fully paid and non-assessable.

PREFERRED STOCK

   
The Company is  authorized to issue up to 5,000,000  shares of preferred  stock,
par value $.01 per share (of which 300,000 are  designated as Series B Preferred
Stock and 191,077 of which are issued and  outstanding).  The preferred stock of
the  Company  can be issued  in one or more  series  as may be  determined  from
time-to-time  by the Board of Directors.  In  establishing a series the Board of
Directors  shall give to it a distinctive  designation  so as to  distinguish it
from the shares of all other series and classes,  shall fix the number of shares
in such series, and the preferences, rights and restrictions thereof. All shares
of any one series shall be alike in every particular. The Board of Directors has
the authority,  without shareholder  approval,  to fix the rights,  preferences,
privileges and restrictions of any series of preferred stock including,  without
limitation:  (a) the rate of  distribution,  (b) the  price at and the terms and
conditions on which shares shall be redeemed, (c) the amount payable upon shares
for  distributions of any kind, (d) the terms and conditions on which shares may
be  converted  if the  shares of any series are  issued  with the  privilege  of
conversion and (e) voting rights except as limited by law.
    

Although  the  Company  currently  does not have any  plans to issue  additional
shares of preferred stock or to designate a new series of preferred stock, there
can be no assurance that the Company will not do so in the future.  As a result,
the Company could  authorize  the issuance of a series of preferred  stock which
would  grant to  holders  preferred  rights to the  assets of the  Company  upon
liquidation,  the right to receive  dividend  coupons before  dividends would be
declared to holders of Common  Stock,  and the right to the  redemption  of such
shares,  together with a premium,  prior to the redemption to Common Stock.  The
current shareholders of the Company have no redemption rights. In addition,  the
Board could  issue  large  blocks of voting  stock to fend off  unwanted  tender
offers or hostile takeovers without further shareholder approval.

SERIES B PREFERRED STOCK

   
The Board of  Directors  of the Company  has  authorized  the  issuance of up to
300,000,  of which 191,077 are outstanding,  shares of Series B Preferred Stock,
par value $.01 per share, the rights,  preferences and  characteristics of which
are as follows:
    

     Dividends

The holders of Series B Preferred  Stock are entitled to receive  dividends  as,
when and if  declared  by the Board of  Directors  of the  Company  out of funds
legally  available  therefor.  No dividend or distribution,  as the case may be,
will be declared or paid on any junior stock unless the dividend also is paid to
holders of the Series B Preferred Stock. The Company does not intend to pay cash
dividends on the Series B Preferred Stock or the underlying Common Stock for the
foreseeable future.



                                       49

<PAGE>

     Conversion

Each share of Series B Preferred  Stock initially was  convertible,  in whole or
part,  at the option of the holder at any time after the initial  issuance  date
into 25 shares of Common Stock based upon an initial  conversion  price of $4.00
per share of Common Stock (the "Initial Conversion Price"). As of June 11, 1997,
13,250  shares of Series B  Preferred  Stock had been  converted  into shares of
Common Stock. The Initial  Conversion Price was adjusted effective June 11, 1997
(the "Reset  Date"),  because the average  closing bid price of the Common Stock
for the 30  consecutive  trading days  immediately  preceding such date was less
than  $5.40.  The  average  was,  in fact,  $5.175 per share.  Accordingly,  the
conversion  price was adjusted to $3.83 per share,  which  corresponds  to a new
conversion  rate of  26.0875  shares  of  Common  Stock  per  share of  Series B
Preferred Stock. The conversion price is subject to further  adjustment upon the
occurrence    of    certain    mergers,     reorganizations,     consolidations,
reclassifications,  stock  dividends  or stock  splits  which will  result in an
increase or decrease in the number of shares of Common Stock outstanding.

     Mandatory Conversion

The  Company  has the  right at any  time  after  the  Reset  Date to cause  the
Preferred  Stock to be converted in whole or in part, on a pro rata basis,  into
shares of Common Stock if the closing  price of the Common Stock exceeds 150% of
the then applicable  Preferred  Conversion Price for at least 20 trading days in
any 30 consecutive trading day period.

     Liquidation

Upon (i) a  liquidation,  dissolution  or  winding  up of the  Company,  whether
voluntary  or  involuntary,   (ii)  a  sale  or  other  disposition  of  all  or
substantially  all of the assets of the Company or (iii) merger or consolidation
(a "Merger  Transaction")  in which the Company is not the surviving  entity and
shares of Common  Stock  consisting  in excess of 50% of the voting power of the
Company are exchanged  (subparagraphs  (i), (ii),  and (iii) being  collectively
referred to as a "Liquidation Event"), after payment or provision for payment of
the debts and other  liabilities  of the Company,  the holders of the  Preferred
Stock then outstanding will first be entitled to receive, pro rata (on the basis
of the  number  of shares  of the  preferred  stock  then  outstanding),  and in
preference  to the holders of the Common Stock and any other series of Preferred
Stock of the  Company,  an amount per share  equal to $135.00  plus  accrued but
unpaid  dividends,  if any;  provided,  however,  that in the  case of a  Merger
Transaction, such $135.00 per share may be paid in cash and/or securities of the
surviving entity in such Merger Transaction.

     Voting Rights

The  holders of the Series B Preferred  Stock have the right at all  meetings of
stockholders  to the  number  of votes  equal to the  number of shares of Common
Stock  issuable upon  conversion  of the Series B Preferred  Stock at the record
date for  determination of the stockholders  entitled to vote. So long as 50% of
the shares of Series B Preferred Stock remain outstanding, the holders of 66.67%
of the Series B Preferred  Stock are entitled to approve (i) the issuance of any
securities  of the  Company  senior to or on parity  with the Series B Preferred
Stock,  (ii) any alteration or change in the rights or preferences or privileges
of the  Series B  Preferred  Stock and (iii) the  declaration  or payment of any
dividend on any junior stock or the repurchase of any securities of the Company.
Except as provided  above or as required by  applicable  law, the holders of the
Series B Preferred  Stock will be entitled to vote  together with the holders of
the Common Stock and not as a separate class.

LOCK-UP AGREEMENTS

The holders of shares of Common  Stock  issuable  upon  conversion  of shares of
Series B Preferred  Stock (the  "Conversion  Shares")  agreed  pursuant to their
subscription agreements with the Company not to offer, pledge, sell, contract to
sell,  grant any option for the sale of, or  otherwise  dispose of,  directly or
indirectly,  75% of the Conversion Shares,  without the prior written consent of
the placement agent in the Series B Offering (the "Lock-Up").  Such restrictions
were  effective  as follows:  (i) with respect to 75% of the  Conversion  Shares
until  September  12, 1996 (three  months after the  completion  of the Series B
Offering);  with respect to the 50% of the Conversion  Shares until December 12,
1996 (six  months  after the  completion  of the  Series B  Offering);  and with
respect to the remaining 25% of the Conversion Shares until March 11,

                                       50

<PAGE>

1997 (nine months after the  completion of the Series B Offering).  Accordingly,
25% of each of the holders' Conversion Shares were never subject to the Lock-Up,
and as of March 11, 1997, the Lock-Ups expired.

However,  holders of approximately 94% of the shares of Series B Preferred Stock
agreed to amend  their  subscription  agreements  with the Company to extend the
Lock-Up period. Pursuant to this amendment, the Lock-Up for such holders' shares
of Series B Preferred Stock has been extended for the period following the later
of the  effectiveness  under  the  Securities  Act of 1933  (the  "Act")  of the
Registration  Statement  ("Effectiveness")  and the  listing  of the  Conversion
Shares on a national  securities  exchange  or initial  quotation  on the Nasdaq
SmallCap Market  ("Listing"),  which occurred on July 10, 1997, as follows:  (i)
three months  following the later of  Effectiveness  and Listing with respect to
75%  of  the  Conversion  Shares;   (ii)  six  months  following  the  later  of
Effectiveness and Listing with respect to 50% of the Conversion Shares and (iii)
nine months following the later of Effectiveness and Listing with respect to the
remaining  25% of the  Conversion  Shares.  Accordingly,  25% of  such  holders'
Conversion  Shares  continue  to have never been  subject  to the  Lock-Up.  The
Conversion  Shares of  holders  that did not agree to amend  their  subscription
agreement are not subject to any Lock-Up.

In  consideration of the agreement with the Company to extend the Lock-Up period
for their Conversion Shares,  holders of shares of Series B Preferred Stock that
agreed to such  extended  Lock-Up have the right as of July 10, 1998 (i.e.,  one
year after the later of  Effectiveness  and Listing),  to have the Company issue
such number of additional shares of Common Stock as shall be necessary to effect
the principles of the original reset provisions  contained in the Certificate of
Designations   for  the  Series  B  Preferred  Stock  taking  into  account  any
adjustments  which may have been  previously made at the time of the Reset Date.
Accordingly,  the Company will become  obligated to issue  additional  shares of
Common  Stock to such  holders if the  average  closing  bid price of the Common
Stock for the 30 consecutive trading days immediately preceding July 10, 1998 is
less than $5.175 per share.

The  holders of shares of Series B Preferred  Stock  issuable  upon  exercise of
Series B  Placement  Warrants  and the Common  Stock  issuable  upon  conversion
thereof (collectively, the "Placement Conversion Shares") are bound, pursuant to
the terms of such  Series B  Placement  Warrants,  not to offer,  pledge,  sell,
contract  to sell,  grant any option for the sale of, or  otherwise  dispose of,
directly or indirectly, any of the Placement Conversion Shares prior to December
11, 1997.

In  addition,  in  connection  with the  Company's  application  for listing and
quotation of the Common  Stock on the Nasdaq  SmallCap  Market,  pursuant to the
request of Nasdaq,  the Company  obtained from the officers and directors of the
Company,  and certain  employees of  Paramount  and its  affiliates,  agreements
locking-up all securities and derivative  securities of the Company held by such
individuals for a period of two years through July 10, 1999. Such agreements may
be waived in whole or in part at the option of the Company.

1992 STOCK OPTION PLAN

   
A total of 437,500  shares of Common Stock has been reserved for issuance  under
the Company's 1992 Stock Option Plan (the "AVAX Option  Plan").  The AVAX Option
Plan was  adopted  by the  Board of  Directors  in April  1992 and  approved  by
stockholders  of the Company in April 1992.  The AVAX Option Plan expires by its
own terms in 2002. It is anticipated  that the Company will put forth a proposal
to increase  the amount of shares  issuable  pursuant to the AVAX Option Plan to
1,500,000  shares of Common Stock at its 1998 Annual  Meeting which is currently
scheduled for June 3, 1998.
    

The AVAX Option Plan provides for the grant of "incentive  stock options" within
the meaning of Section 422 of the Internal Revenue Code of 1986, as amended, and
nonqualified  stock  options to  employees,  directors  and  consultants  of the
Company.  Incentive  stock  options may be granted only to  employees.  The AVAX
Option  Plan is  administered  by the Board of  Directors  of the  Company (or a
Committee thereof) which determines the terms of the options granted,  including
the exercise price, the number of shares subject to the option, and the schedule
on which the option becomes exercisable.

The AVAX Option Plan requires that the exercise price of incentive stock options
granted  to  employees  of the  Company  who at the  time of the  grant  of such
incentive stock option own stock  representing more than 10% of the voting power
of all classes of stock of the Company or any parent or  subsidiary,  must be at
least  equal to 110% of the fair  market  value  of such  shares  on the date of
grant.  The AVAX Option Plan also requires that the exercise  price of incentive
stock  options



                                       51

<PAGE>

granted to any other  employee of the Company must be at least equal to the fair
market value of such shares on the date of grant, and that the exercise price of
nonqualified  stock  options  granted by the Company must be equal to 85% of the
fair market value per share on the date of grant.  The maximum  terms of options
granted under the AVAX Option Plan is 10 years.  With respect to any participant
who owns  stock  possessing  more than 10% of the voting  rights of  outstanding
capital  stock,  the exercise price of any option must be at least equal to 110%
of fair  market  value on the date of grant and the term may be no  longer  than
five years.  No incentive stock option may be granted under the AVAX Option Plan
to any individual if the aggregate  fair market value of the shares  (determined
as of the time of the option is granted) which would become  exercisable  during
any calendar year,  under all incentive  stock options held by such  individual,
exceeds  $100,000,  unless such excess options shall be treated as  nonstatutory
stock options.

Generally,  any  option  held by an  individual  who  ceases to be  employed  or
retained by the Company may be exercised by such individual  within three months
after such individual ceases to be employed or retained by the Company or within
one year after such individual  ceases to be employed or retained in the case of
disability.  Generally,  any option held by an  individual  who dies while still
employed or retained by the Company or dies within  three  months after the date
he or she is no longer  employed or retained by the Company may be  exercised by
such individual's representative within six months following the date of death.

   
Pursuant to the AVAX Option Plan, as of May 5, 1998,  options to purchase 60,000
shares of Common Stock were  outstanding and fully vested at a weighted  average
price of $2.60 per share, and no options had been exercised.
    

Such options do not confer upon  holders  thereof any voting or any other rights
of a  stockholder  of the  Company.  The shares of Common  Stock  issuable  upon
exercise of the options and warrants in accordance with the terms thereof,  will
be fully paid and nonassessable.

OTHER OPTIONS

Pursuant to their letters of employment with the Company, Dr. Jonas, Mr. Tousley
and Dr. Yankee  received share options to acquire  318,872,  125,000 and 125,000
shares of Common Stock,  respectively,  at an exercise price of $1.00 per share.
In  connection  with her letter of  employment  entered into on August 23, 1996,
another  employee of the Company  received share options to acquire 2,500 shares
of Common Stock at an exercise price of $1.00 per share. All the foregoing share
options  will  vest at a rate of 1/16  per  quarter  over the  four-year  period
following the effective  date of the  applicable  letters of employment  and are
exercisable for a period of seven years.

In July 1997, Dr. Jonas, Mr. Tousley, Dr. Yankee and the other employee referred
to above received  additional share options to acquire 150,000,  60,000,  60,000
and 10,000 shares of Common Stock,  respectively,  at an exercise price of $4.50
per share.  All such share  options will vest at a rate of 1/16 per quarter over
the four-year period and are exercisable for a period of seven years;  provided,
however, that the additional options granted to Dr. Jonas will vest at a rate of
1/12 per quarter over a three-year period.

In  connection  with his letter of  employment,  effective  February  10,  1997,
another employee of the Company received share options to purchase 52,500 shares
of Common Stock at an exercise price equal to $6.00 per share.  In July 1997, to
reward and incent such  employee,  the Company  withdrew  such share options and
replaced them with share options to acquire  90,000 shares of Common Stock at an
exercise price of $4.50.  The share options issued to such employee will vest as
follows:  5,000 of such options  shall vest on  September 1, 1997,  30,000 shall
vest at a rate of 1/6 every six months over a three-year period thereafter,  and
the remaining  55,000 shares will vest upon the occurrence of certain  milestone
events relating to the Company's manufacturing program.

   
In July 1997, in consideration for scientific  consulting services,  the Company
issued options to purchase 30,000 shares of Common Stock,  exercisable for seven
years at an exercise price equal to $4.50 per share.  Such options shall vest at
a rate of 1/3 per year over a period of three years.
    

In September 1997, as compensation  for services  rendered and to be rendered as
members of the Company's  Board of Directors,  the Company issued to each of Mr.
de Castro, Dr. Spana, Dr. Prendergast and Mr. Weiss,  options to purchase

                                       52

<PAGE>

40,000 shares of Common Stock,  exercisable for seven years at an exercise price
equal to $4.50 per share.  Such options shall vest at a rate of 1/16 per quarter
for a period of four years, commencing on December 1, 1997.

In December 1997, all directors of the Company eligible for compensation elected
to be  compensated  for their 1998 services  with options to purchase  shares of
Common  Stock,  and,  accordingly,  were each issued  options to purchase  5,161
shares of Common Stock at an exercise price of $3.875 per share of Common Stock;
which options shall vest at a rate of 1/4 per quarter over a one-year period and
shall be exercisable for a period of seven years. See "Board Compensation".

In March 1998, in  consideration  for  consulting  services,  the Company issued
options to purchase  50,000 shares of Common Stock,  exercisable for seven years
at an exercise price equal to $4.00 per share. Such options shall vest at a rate
of 1/12 per month over a period of one year.

   
As of March 31, 1998,  options to purchase  304,979  shares of Common Stock were
vested with respect to such  officers,  directors and employees  with a weighted
average price of $2.48 per share and no such options had been exercised.
    

WARRANTS

The  following  summaries  are  qualified  in their  entirety by the text of the
warrants,  copies  of which  have been  filed as  exhibits  to the  Registration
Statement.

In connection  with services  rendered by Paramount,  as placement  agent in the
Series B Offering,  and pursuant to a placement agency agreement entered into by
the Company and Paramount,  the Company granted  Paramount  and/or its designees
placement  warrants  ("Series B Placement  Warrants")  to acquire  approximately
25,820 shares of Series B Preferred Stock, exercisable until June 11, 2006 at an
exercise  price of $110 per  share of Series B  Preferred  Stock.  The  Series B
Placement  Warrants may be  exercised,  in whole or in part and may be exercised
pursuant to a cashless exercise  provision.  The Series B Placement Warrants are
subject to certain lock-up restrictions. See "Lock-up Agreements."

An aggregate of 37,979 shares of Common Stock  issuable  upon  conversion of the
shares of Series B  Preferred  Stock  issuable  upon  exercise  of the  Series B
Placement Warrants held by non-Paramount  registered  representatives  are being
registered  pursuant  to  the  Registration  Statement  for  this  Offering.  An
aggregate of 635,585 shares  issuable upon  conversion of the shares of Series B
Preferred  Stock issuable upon exercise of the Series B Placement  Warrants held
by Paramount registered representatives are not being so registered.

In connection with services rendered by Paramount,  as bridge financing agent in
a certain  bridge  financing  loan availed of by the Company from August 1995 to
February  1996,  the Company  granted  Paramount  and/or its designees  warrants
("Bridge  Placement  Warrants") to acquire  11,250 newly issued shares of Common
Stock.  Each Bridge Placement  Warrant entitles the registered holder thereof to
purchase Common Stock at a price of $.04 per share, at any time until five years
from  the  date  of  this  Prospectus.  The  Bridge  Placement  Warrants  may be
exercised,  in whole  or in part and may be  exercised  pursuant  to a  cashless
exercise provision.

   
In  connection  with  services  rendered  by  Ladenberg,  Thalmann  & Co.,  Inc.
("Ladenberg"),  and D. H. Blair  Investment  Banking Corp.  ("D. H. Blair"),  as
placement agents in the offering of Series A Preferred Stock conducted from June
1992 to September  1992,  the Company  granted  Ladenberg and D. H. Blair and/or
their respective  designees certain warrants ("Series A Placement  Warrants") to
purchase  Common Stock at any time until June 26, 1997.  In April and June 1997,
Ladenberg  and  D.H.  Blair  and/or  their  respective   designees  were  issued
approximately  49,770 shares of Common Stock  pursuant to the cashless  exercise
provisions of the Series A Placement Warrants.
    

In consideration for certain  investment banking and financial advisory services
that may be rendered on a  non-exclusive  basis by Hill,  Thompson,  Magid & Co.
("HTM"), the Company granted HTM warrants (the "HTM Warrants") to acquire 50,000
shares of Common  Stock,  which  warrants  shall vest from time to time  through
April 17,  1998.  The HTM  Warrants  entitle the  registered  holder to purchase
Common Stock at a price of $8.00 per share, at any time from July 17, 1997 until
July 17, 2002. The HTM Warrants may be exercised in whole or in part.



                                       53

<PAGE>

In consideration for certain  investment banking and financial advisory services
to have been  rendered on a  non-exclusive  basis by M.H.  Meyerson & Co.,  Inc.
("Meyerson"), the Company granted Meyerson warrants (the "Meyerson Warrants") to
acquire  50,000  shares  of  Common  Stock on  October  24,  1996.  The  Company
terminated the agreement with Meyerson on April 17, 1997, and, accordingly,  the
Meyerson  Warrants  vested  with  respect to the right to  purchase up to 25,000
shares.  Pursuant to the Meyerson Warrants, the registered holder is entitled to
purchase up to 25,000  shares of Common Stock at a price of $6.00 per share,  at
any time from December 24, 1996 until October 24, 2001. Meyerson was also paid a
fee of $15,000 at the time of its execution of the investment banking agreement.

Pursuant to Section 2710(c)(7)(A) of the NASD Corporate Financing Rules, the HTM
Warrants and the Meyerson  Warrants  were issued to HTM and Meyerson and certain
of their  respective  bona fide officers and employees only and may not be sold,
transferred,  assigned or pledged or  hypothecated by any person for a period of
one year  from the  date of  issuance.  Accordingly,  the HTM  Warrants  and the
Meyerson  Warrants contain an appropriate  legend describing the restriction set
forth above for the period in which such restriction is operative.

   
In connection with the Rutgers  License,  the Company  granted Rutgers  warrants
(the "Rutgers Warrants") to purchase 125,000 shares of Common Stock at $8.24 per
share,  which warrants vest from time to time until October 31, 2011, subject to
the achievement of certain milestones. The Rutgers Warrants may be exercised, in
whole or in part and may be exercised pursuant to a cashless exercise provision.
    

In  consideration  of services  rendered on behalf of the Company in  connection
with the  acquisition and  negotiation of the Rutgers  License,  on February 13,
1997,  the Company  agreed to issue to each of Samuel P.  Wertheimer,  Ph.D. and
Carl Spana, Ph.D.,  warrants to purchase 6,375 shares of Common Stock at a price
of $6.00 per share.  Such  warrants  may be exercised in whole or in part over a
seven-year  period.  In  consideration  of  services  rendered  on behalf of the
Company in connection  with the  acquisition  and  negotiation  of the Texas A&M
License,  on February 13, 1997, the Company agreed to issue to Fred Mermelstein,
Ph.D.,  warrants to purchase  12,750  shares of Common Stock at a price of $6.00
per share.  Such warrants may be exercised in whole or in part over a seven-year
period.

In July 1997,  the Company issued  warrants to purchase  45,000 shares of Common
Stock at an  exercise  price of $4.50 per share.  Such  warrants  were issued in
consideration  of services  being  rendered by the Company's real estate advisor
who is representing it in connection with the  identification and negotiation of
potential biopharmaceutical clinical manufacturing sites throughout the country.
Such warrants were to vest upon the occurrence of certain milestones relating to
the  establishment  of clinical  manufacturing  sites,  and were  exercisable in
whole, or in part,  over a five-year  period.  In December 1997,  these warrants
were  canceled  and new warrants to purchase  115,000  shares of common stock at
$3.50 were issued to the real estate  advisor.  Such  warrants will vest and are
exercisable on the same terms as the original warrants.

In December  1997,  the Company  issued  warrants to purchase  200,000 shares of
Common Stock at an exercise price of $3.75 per share.  Such warrants were issued
in  consideration  of  services  being  rendered  by  the  Company's  investment
relations  advisor.  Such  warrants  will vest upon the  achievement  of certain
performance-based  milestones  relating to the Company's stock price and trading
volume and are exercisable in whole, or in part, over a five-year period.

   
On May 1, 1998, in consideration  for certain  financial  advisory services that
may be rendered on a non-exclusive  basis by Southeast Research  Partners,  Inc.
("Southeast"), the Company granted Southeast warrants (the "Southeast Warrants")
to acquire 80,000 shares of Common Stock,  which warrants shall vest as follows:
50% of such warrants  shall vest as of May 1, 1998;  25% of such warrants  shall
vest as of October 31, 1998;  and 25% of such warrants  shall vest as of January
28, 1999.  The  Southeast  Warrants  entitle the  registered  holder to purchase
Common  Stock at a price of  $4.03125  per share at any time  until May 1, 2003.
Holders of the Southeast Warrants are entitled to piggyback  registration rights
for the shares of Common Stock issuable upon exercise of such warrants.

On April 27, 1998, in consideration  for certain  engineering  advisory services
that may be rendered on a non-exclusive basis by CRB Engineering,  Inc. ("CRB"),
the Company granted CRB warrants (the "CRB Warrants") to acquire 9,375 shares of
Common  Stock,  which  warrants  shall vest on or about July 10,  1998.  The CRB
Warrants  entitle the registered  holder to purchase  Common Stock at a price of
$4.00 per share at any time until April 27, 2003.
    



                                       54

<PAGE>

Each of the foregoing  warrants  contain  provisions that generally  provide the
holders thereof certain antidilution  protection in certain events (such as, but
not limited to, the occurrence of stock dividends,  stock splits, mergers, sales
of all or substantially all of the Company's assets and sales of other preferred
stock at below market  price) by  adjustment of the  applicable  exercise  price
and/or the number of shares issuable upon exercise of such warrants.

The Company is not  required  to issue  fractional  shares of Common  Stock upon
exercise of any such warrants.  In lieu thereof,  an amount of cash equal to the
same  fraction of the then current  market value of a share of Common Stock will
be paid.  No  adjustment  as to dividends  will be made upon any exercise of any
such  warrants.  The  holder of any such  warrant  will not have any rights as a
holder of Common Stock unless and until the applicable warrant is exercised.

REGISTRATION RIGHTS

   
The Company has agreed  under  certain  circumstances  to register the shares of
Common Stock owned by TJU, Dr. Berd, VentureTek, L.P., Dr. Rosenwald and certain
designees of Dr.  Rosenwald.  Under terms of the agreements  between the Company
and the  holders  of such  registrable  securities,  generally,  if the  Company
proposes to register  any of its  securities  under the Act,  either for its own
account or for the  account  of other  securityholders  exercising  registration
rights,  such  holders  are  entitled  to  notice of such  registration  and are
entitled to include such shares of Common Stock therein. Holders of an aggregate
of 50% of the shares of Common  Stock  issuable  upon  exercise  of the Series A
Placement  Warrants are  entitled to exercise  their right to have the shares of
Common Stock issuable upon exercise thereof registered under the Act at any time
180 days after the Company's  initial public offering until August 31, 1999. The
holders of the  Meyerson  Warrants  and  holders  of any shares of Common  Stock
issued upon exercise of the Meyerson Warrants  ("Meyerson Shares") are entitled,
during the period commencing October 24, 1998, and ending October 24, 2001, upon
the  request  of at  least  51% of the  collective  holders  of the  unexercised
Meyerson  Warrants  and the  Meyerson  Shares,  to require the Company to file a
registration  statement  under the Act at the Company's  expense with respect to
the shares of Common Stock  issuable  upon  exercise of the  Meyerson  Warrants.
Holders of the  Meyerson  Warrants  and  Meyerson  Shares are also  entitled  to
certain  piggyback  registration  rights during the same period.  Holders of the
Rutgers  Warrants  are  entitled  to  piggyback   registration   rights  in  any
registrations subsequent to the first public offering by the Company. Holders of
the  Southeast  Warrants are entitled to piggyback  registration  rights for the
shares of Common Stock issuable upon exercise of such warrants.
    

Registered  representatives  of Paramount that may have had registration  rights
with respect to their ownership of shares of Common Stock  (including  shares of
Common Stock  issuable upon  conversion  of shares of Series B Preferred  Stock,
including  shares of Series B  Preferred  Stock  issuable  upon  exercise of any
Placement Warrants), have waived their rights to have such Common Stock included
in the  Registration  Statement  at this time and are not  participating  in the
Offering.

TRANSFER AGENT

The Transfer Agent for the shares of Common Stock is UMB Bank of Missouri.




                                       55


<PAGE>

                             SELLING SECURITYHOLDERS

   
     The  following  table sets  forth as of May 5,  1998,  (i) the name of each
Selling Securityholder, (ii) the amount of shares of Common Stock owned, whether
outstanding  or issuable,  by such holder,  (iii) the amount of shares of Common
Stock which may be offered by each  Selling  Securityholder  and (iv) the amount
and  percentage  of  shares  of  Common  Stock to be owned by each  such  holder
following the completion of the Offering.  The amounts of Common Stock set forth
below, under the caption "Amount to be Offered,"  represent the aggregate number
of shares of (A) Common  Stock  owned by each  Selling  Stockholder,  (B) Common
Stock  issuable upon  conversion  of the Series B Preferred  Stock owned by each
Selling Securityholder,  (C) Common Stock issuable upon conversion of the Series
B Placement  Warrants and (D) Common Stock  issuable upon exercise of conversion
of  the  Bridge   Placement   Warrants   (assuming   for   (B)-(D)  the  initial
conversion/exercise  rates under the terms of the Series B Preferred  Stock, the
Series B Placement Warrants and the Bridge Placement Warrants, respectively), in
each case as of May 5, 1998.
    

<TABLE>
<CAPTION>
                                                                                                                 Shares   Percentage
                                                                                                                  Owned        Owned
                                                                     Shares Currently         Amount to           after        after
Selling Securityholder (1)                                                      Owned        be Offered        Offering     Offering
- --------------------------                                                      -----        ----------        --------     --------

<S>                                                                           <C>               <C>                   <C>        <C>
The 1992 Houston Partnership, L.P.                                             13,293            13,293               0          *
The A.M. Group L.L.C                                                           24,457            24,457               0          *
Todd D. Aaron, M.D                                                              6,646             6,646               0          *
Leonard J. Adams                                                               13,587            13,587               0          *
Ross D. Ain                                                                     2,658             2,658               0          *
Kenneth G. Alberstadt                                                           1,747             1,747               0          *
Meir Aliakim                                                                   52,359            52,359               0          *
Amram Kass P.C. Defined Benefit                                                                                              
    Pension Plan                                                                9,783             9,783               0          *
George Anagnos                                                                  6,646             6,646               0          *
Josephine G. Anagnos                                                            6,646             6,646               0          *
Steven Anagnos                                                                  6,646             6,646               0          *
Ansec Corp.                                                                    53,175            53,175               0          *
The Aries Domestic Fund, L.P. (2)                                             125,088           125,088               0          *
The Aries Fund, A Cayman Island Trust (2)                                     234,373           234,373               0          *
Rajiv Bahl                                                                      6,646             6,646               0          *
BAM of NY, Inc. Defined Benefit Pension                                                                                      
      Plan                                                                     24,457            24,457               0          *
Martin Bandier                                                                 13,293            13,293               0          *
Banque SCS Alliance (2)                                                        13,815            13,815               0          *
Banque Franck S.A                                                              26,587            26,587               0          *
Banque Unigestion                                                              41,210            41,210               0          *
Amnon Barness & Caren H.  Barness,                                                                                           
    JTWROS                                                                      6,646             6,646               0          *
Alan R. Batkin                                                                 13,293            13,293               0          *
Laurie and Steven Beane                                                         6,646             6,646               0          *
Mark Berg                                                                      66,468            66,468               0          *
David J. Bershad                                                               53,175            53,175               0          *
Biowave Investment Partners                                                    13,293            13,293               0          *
John V. Bivona                                                                  2,937             2,937               0          *
Marcy Blender, Alan Blender                                                                                                  
    JTWROS                                                                      3,988             3,988               0          *
Blair Foster & Co., Inc. (2)                                                      965               965               0          *
Elliott Broidy                                                                 26,587            26,587               0          *
Patrick J. Callahan                                                             6,646             6,646               0          *
M. Rafael Gonzalez Calvillo                                                     2,658             2,658               0          *
Carlos Plancarte Garcia N., Leonor P                                                                                         
  De Morian, JTWROS                                                             1,631             1,631               0          *
Gabriel M. Cerrone                                                             51,000            51,000               0          *
Chana Sasha Foundation                                                          6,522             6,522               0          *
Andrew and Barbara Cichelli                                                     6,646             6,646               0          *
</TABLE>


                                       56
<PAGE>

<TABLE>
<CAPTION>
   
                                                                                                                 Shares   Percentage
                                                                                                                  Owned        Owned
                                                                     Shares Currently         Amount to           after        after
Selling Securityholder (1)                                                      Owned        be Offered        Offering     Offering
- --------------------------                                                      -----        ----------        --------     --------
<S>                                                                           <C>               <C>              <C>             <C>
Cinco de Mayo, Ltd.                                                            13,293            13,293               0          *
Roger and Margaret Coleman                                                      6,646             6,646               0          *
Colony Partners, A California General
  Partnership                                                                  13,293            13,293               0          *
Robert J. Conrads                                                              13,293            13,293               0          *
Cook & CIE SA                                                                 106,350           106,350               0          *
Oddo et Cie                                                                    26,087            26,087               0          *
Lilia Cordero de Adame, Lilia M.A. Olvera,
JTWROS                                                                         13,293            13,293               0          *
Archibald Cox, Jr                                                              53,175            53,175               0          *
Credit Lyonnais Suisse (SA)                                                    53,675            53,675               0          *
David Trust                                                                     2,658             2,658               0          *
DBRN Securities Inc.                                                           26,587            26,587               0          *
Elke R. de Ramirez                                                              2,658             2,658               0          *
Nathan P. Diamond                                                               6,646             6,646               0          *
Donald G. Drapkin                                                              66,468            66,468               0          *
M. Robert Dussler                                                               1,329             1,329               0          *
Eastside Investment Partners                                                   13,293            13,293               0          *
Elena Edelstein and Marcus Edelstein                                            6,646             6,646               0          *
Edgewater Private Equity Fund, LP                                              97,718            66,468          31,250          *
EDN Equities                                                                   53,175            53,175               0          *
Ariel Elia                                                                      6,646             6,646               0          *
Howard Ellis                                                                    2,658             2,658               0          *
Etablissement Occramis                                                         13,293            13,293               0          *
Europa International, Inc.                                                     13,293            13,293               0          *
Joseph A. Fabiani, M.D                                                         26,190            19,940           6,250          *
Faisal Finance                                                                 53,174            53,174               0          *
Laurence D. Fink                                                               53,175            53,175               0          *
Steven B. Fink                                                                  6,646             6,646               0          *
Finterbank Zuerich                                                             26,587            26,587               0          *
Firebird Overseas, Ltd.                                                         3,750             3,750               0          *
Alan Fisher                                                                    11,964            11,964               0          *
Norman J. Fisher                                                               12,750            12,750               0          *
Joseph H. Flom                                                                 10,032            10,032               0          *
Hans-Wolfgang Frick                                                            26,587            26,587               0          *
James P. Frickleton and James R. Bartimus                                      26,587            26,587               0          *
Michael J. Garnick                                                             50,750            38,250          12,500          *
Marc Gelman                                                                    76,500            76,500               0          *
Joseph Giamanco                                                                53,173            53,173               0          *
Richard Goldberg                                                                3,262             3,262               0          *
Harold S. Goldstein                                                             6,646             6,646               0          *
Ofelia Anton Gomez                                                              5,317             5,317               0          *
Peter Grabler                                                                     814               814               0          *
Robert J. Granovsky                                                            13,293            13,293               0          *
Greenwood Partners                                                             66,468            66,468               0          *
James & Nancy Grosfeld, tenants by
    entireties                                                                 53,175            53,175               0          *
Peter Grossman                                                                  6,646             6,646               0          *
Stuart Gruber                                                                  26,587            26,587               0          *
Erez & Elyse Halevah                                                           13,293            13,293               0          *
Yonah J. Hamlet, MD, Trustee FBO Yonah
    J. Hamlet, MD Profit Sharing Plan Dtd 
    1/1/86                                                                      9,771             9,771               0          *
Harpel Family Partnership                                                      18,468            18,468               0          *
Thomas O. Hecht                                                                13,293            13,293               0          *
Chaim Herman and Denise Herman                                                  2,658             2,658               0          *
    
</TABLE>


                                       57

<PAGE>

<TABLE>
<CAPTION>
                                                                                                                 Shares   Percentage
                                                                                                                  Owned        Owned
                                                                     Shares Currently         Amount to           after        after
Selling Securityholder (1)                                                      Owned        be Offered        Offering     Offering
- --------------------------                                                      -----        ----------        --------     --------

<S>                                                                            <C>               <C>              <C>            <C>
Gary Herman                                                                    13,292            13,292               0          *
Jack Hirschfield                                                                3,322             3,322               0          *
The Holding Company                                                            26,587            26,587               0          *
Jeffrey C. Hoos                                                                 6,646             6,646               0          *
Irving Huber and Charlotte Huber                                                6,646             6,646               0          *
IASD Health Services Corp.                                                     53,175            53,175               0          *
Mark & Rebecca Ingerman                                                        13,293            13,293               0          *
J.F. Shea Co., Inc. as Nominee 1996-21                                         33,043            33,043               0          *
Jackson Hole Investments Acquisitions,
    L.P                                                                        25,500            25,500               0          *
Peter L. Jensen                                                                 6,782             6,782               0          *
John Osterweis TTEE Osterweis Revocable
      Trust dtd 9-13-93                                                         6,646             6,646               0          *
James D. Judd                                                                  16,418            13,293           3,125          *
Hyman R. Kahn                                                                  26,587            26,587               0          *
Patrick M. Kane                                                                 6,646             6,646               0          *
Robert S. Kapito                                                               26,587            26,587               0          *
Donald R. Kendall, Jr                                                           7,976             7,976               0          *
Daniel Kessel, M.D                                                             29,712            26,587           3,125          *
Ida Kessel                                                                      9,771             6,646           3,125          *
Lawrence J. Kessel                                                             26,587            26,587               0          *
Keys Foundation, Curacao, Netherlands,
    Antilles                                                                   26,587            26,587               0          *
Robert Klein, M.D                                                              26,587            26,587               0          *
Robert Knox                                                                    13,293            13,293               0          *
Arthur or Sean Kohn                                                            10,033            10,033               0          *
Charles Koppelman                                                              26,587            26,587               0          *
Ira L. Kotel                                                                    8,880             8,880               0          *
Ted Koutsoubos                                                                 19,940            19,940               0          *
Michael and Nicole Kubin                                                       13,587            13,587               0          *
Vincent P. Lambriola                                                            6,646             6,646               0          *
Larich Associates                                                              39,881            39,881               0          *
Legong Investments N.V                                                         26,174            26,174               0          *
Albert Lemer                                                                    6,646             6,646               0          *
Susan Tauber Lemor                                                              6,646             6,646               0          *
Gregory Lenchner                                                               16,885            10,635           6,250          *
Gregory S. Lenchner and Donna Lenchner,
     Jointly                                                                    9,305             9,305               0          *
Harvey Lenchner                                                                 5,317             5,317               0          *
Michael Lenchner                                                                1,329             1,329               0          *
Henry N. Lieberman                                                             13,293            13,293               0          *
Frank T. Lincoln, Jr                                                           13,293            13,293               0          *
The Lincoln Tax Advantaged, L.P.                                               26,587            26,587               0          *
Armand A. Lindenbaum                                                            6,646             6,646               0          *
Lion Tower Corporation                                                         13,293            13,293               0          *
Beverly O. Lobell                                                              12,750            12,750               0          *
J. Jay Lobell                                                                   5,875             5,875               0          *
John L. Loeb, Jr                                                                6,646             6,646               0          *
Luxembrella - All Around Int'l                                                 53,175            53,175               0          *
Herbert M. Lyman                                                                6,646             6,646               0          *
The M.L. Lawrence Trust                                                        79,762            79,762               0          *
Marathon Agents Profit Sharing                                                  6,646             6,646               0          *
Michael P. Marcus                                                              26,588            26,588               0          *
Arden Merback                                                                   3,322             3,322               0          *
Joseph Merback (2)                                                              3,860             3,860               0          *
Josef Mermelstein                                                              26,587            26,587               0          *
Albert Milstein                                                                13,293            13,293               0          *
Mary Y.Y. Mo                                                                    6,646             6,646               0          *
</TABLE>


                                       58

<PAGE>

<TABLE>
<CAPTION>
   
                                                                                                                 Shares   Percentage
                                                                                                                  Owned        Owned
                                                                     Shares Currently         Amount to           after        after
Selling Securityholder (1)                                                      Owned        be Offered        Offering     Offering
- --------------------------                                                      -----        ----------        --------     --------
<S>                                                                           <C>               <C>                   <C>        <C>
Michael Y.Q. Mo                                                                 6,646             6,646               0          *
Zhong-Liang Mo                                                                 13,293            13,293               0          *
Richard Molinsky                                                               12,750            12,750               0          *
The Monument Trust Company Limited                                             26,587            26,587               0          *
Roberto Gonzalez Moreno                                                        26,587            26,587               0          *
Alfred D. Morgan, Trust Administrator
    (Trustee) / Margaret Goldwater, Trustee                                     6,646             6,646               0          *
Eli Moshen                                                                      3,322             3,322               0          *
Mova Investments Limited                                                       26,587            26,587               0          *
Arnold Mullen                                                                  13,293            13,293               0          *
Arthur J. Nagle                                                                 6,646             6,646               0          *
P. Sherrill Neff                                                                6,646             6,646               0          *
New Jersey Wolfson Trust                                                      345,637           345,637               0          *
Kevin P. Newman                                                                 3,322             3,322               0          *
Nikki Establishment For Fashion &
    Marketing Research                                                          3,293             3,293               0          *
Old Oly, J.V                                                                   13,293            13,293               0          *
Paul D. and Rebecca L. Ostrovsky                                                6,646             6,646               0          *
Steven N. Ostrovsky                                                             6,646             6,646               0          *
Palmetto Partners, Ltd.                                                        39,881            39,881               0          *
John Pappajohn                                                                 53,175            53,175               0          *
Mark D. Pesonen                                                                13,293            13,293               0          *
Maria Pierce                                                                    6,646             6,646               0          *
Charles Potter                                                                  6,646             6,646               0          *
Tis Prager                                                                      6,646             6,646               0          *
Privat Kredit Bank, Lugano                                                    159,525           159,525               0          *
Propp & Company, Inc. (2)                                                       6,802             6,802               0          *
Abel Quezada Rueda, Mercedes P. Quezada
    JTWRS                                                                       3,988             3,988               0          *
Michael S. Resnick                                                              4,904             4,904               0          *
Rick Steiner Productions, Inc.                                                  7,976             7,976               0          *
Todd M. Roberts                                                                 8,853             8,853               0          *
Linda Gosden Robinson                                                          39,881            39,881               0          *
Rosemary Cass Ltd. Pension Plan                                                 5,317             5,317               0          *
J. Philip Rosen                                                                13,293            13,293               0          *
Paul H. Rosen                                                                   2,658             2,658               0          *
Ervin Rosenfeld                                                                 6,523             6,523               0          *
Martine Rothblatt                                                               6,646             6,646               0          *
Jeffrey Rothenberg DDS                                                          7,976             7,976               0          *
David W. Ruttenberg                                                             6,646             6,646               0          *
S&M Investments                                                                 6,646             6,646               0          *
Leeor Sabbah                                                                   79,762            79,762               0          *
M.D. Sabbah                                                                   132,937           132,937               0          *
Sagres Group Ltd.                                                             212,700           212,700               0          *
Wayne Saker                                                                    13,587            13,587               0          *
Scott G. Sandler                                                               19,940            19,940               0          *
Sarah Trust                                                                     2,658             2,658               0          *
Savenna Consultants, Inc. (2)                                                   4,043             4,043               0          *
Roy and Marlena Schaeffer                                                      13,293            13,293               0          *
Howard Schain                                                                  13,293            13,293               0          *
Carl M.  Schechter                                                              6,646             6,646               0          *
Robin Schlaff                                                                   6,646             6,646               0          *
Ralph Schlosstein                                                              26,587            26,587               0          *
Andrew W. Schonzeit                                                             6,646             6,646               0          *
Schwendiman Global Sector Fund L.P.                                            13,293            13,293               0          *
Roberto Segovia                                                                 5,317             5,317               0          *
Lori Shapero                                                                   13,293            13,293               0          *
    
</TABLE>


                                       59
<PAGE>

<TABLE>
<CAPTION>
   
                                                                                                                 Shares   Percentage
                                                                                                                  Owned        Owned
                                                                     Shares Currently         Amount to           after        after
Selling Securityholder (1)                                                      Owned        be Offered        Offering     Offering
- --------------------------                                                      -----        ----------        --------     --------

<S>                                                                           <C>               <C>               <C>            <C>
Leonard P. Shaykin                                                             13,293            13,293               0          *
Sheila Davis Lawrence Revocable Trust                                          26,587            26,587               0          *
L. Kevin Sheridan, Jr                                                           7,105             7,105               0          *
Martin Sirotkin                                                                16,418            13,293           3,125          *
Bruce Slovin                                                                   66,468            66,468               0          *
South Ferry #2, L.P.                                                          303,375           303,375               0          *
Aaron Speisman custodian for Jennifer
    Speisman                                                                    6,375             6,375               0          *
Aaron Speisman custodian for Joshua
    Speisman                                                                    6,375             6,375               0          *
William M. Spencer III                                                         26,587            26,587               0          *
Neil and Laurie Spindel                                                        13,293            13,293               0          *
John L. Steffens                                                               26,587            26,587               0          *
Dr. Edward L. Steinberg                                                         6,375             6,375               0          *
Catherine Steinmann                                                             6,646             6,646               0          *
Gabriel Steinmann                                                               6,646             6,646               0          *
Jennifer Steinmann                                                              6,646             6,646               0          *
Joshua Steinmann                                                                6,646             6,646               0          *
Gary J. Strauss                                                                13,293            13,293               0          *
Strome Partners, L.P.                                                         265,875           265,875               0          *
Kaveh Taleghani                                                                   125               125               0          *
Hindy H. Taub                                                                   6,646             6,646               0          *
Herman Tauber                                                                  39,087            39,087               0          *
Myron M. Teitelbaum, M.D                                                       16,021            16,021               0          *
Termtec, Ltd.                                                                  13,293            13,293               0          *
Patricia & Erich Theissen                                                       2,658             2,658               0          *
Mitchell Troyetsky                                                              6,646             6,646               0          *
Thomas R. Ulie (2)                                                                875               875               0          *
Joseph A. Umbach                                                               13,293            13,293               0          *
United Congregations Mesora                                                    26,587            26,587               0          *
Dan Valahu                                                                      6,646             6,646               0          *
Valor Capital Management, L.P.                                                 13,293            13,293               0          *
Andre Visser (2)                                                                1,565             1,565               0          *
Vivaldi, Ltd.                                                                  39,881            39,881               0          *
W & P Bank & Trust Company Ltd.                                                26,587            26,587               0          *
Allan Warshawsky                                                                6,646             6,646               0          *
Michael Weiner, M.D                                                             2,608             2,608               0          *
Mark E. Weiss                                                                   6,646             6,646               0          *
The M and B Weiss Family Limited                                       
    Partnership of 1996                                                        53,175            53,175               0          *
Robert J. Whetten                                                              26,587            26,587               0          *
Whitcome Family Trust                                                          26,587            26,587               0          *
Tim Winans                                                                      6,646             6,646               0          *
Wisdom Tree Associates, LP                                                      9,881             9,881               0          *
Alan Wise/Teri Wise, Jointly                                                    6,646             6,646               0          *
Andrew B. Woldow                                                                6,646             6,646               0          *
James D. Wolfensohn                                                            25,000            25,000               0          *
Aaron Wolfson                                                                  26,587            26,587               0          *
Abraham Wolfson                                                                26,587            26,587               0          *
Wolfson Descendents' 1983 Trust                                               132,937           132,937               0          *
Worldwide Consultants and Finance Ltd.                                         26,587            26,587               0          *
    
</TABLE>


                                       60
<PAGE>

<TABLE>
<CAPTION>
                                                                                                                 Shares   Percentage
                                                                                                                  Owned        Owned
                                                                     Shares Currently         Amount to           after        after
Selling Securityholder (1)                                                      Owned        be Offered        Offering     Offering
- --------------------------                                                      -----        ----------        --------     --------

<S>                                                                          <C>               <C>                  <C>          <C>
   
Richard A. Young                                                                6,646             6,646               0            *
Robert J. Young                                                                 6,646             6,646               0            *
Zapco Holdings Settlement                                                       6,646             6,646               0            *
Uzi Zucker                                                                     13,293            13,293               0            *
                                                                            ---------         ---------          ------           --
TOTAL                                                                       6,149,580         6,080,830          68,750            *
                                                                            =========         =========          ======           ==
                                                                     
</TABLE>

- --------------------------------------------------------------------------------
*    Represents less than 1.0 %.

(1)  Unless  otherwise  indicated,  includes all shares of Common Stock issuable
     upon  conversion  of the Series B Preferred  Stock at the reset  conversion
     rate of $3.83 per share. See "Description of Securities--Series B Preferred
     Stock."

(2)  Includes  Common Stock  issuable upon  conversion of the shares of Series B
     Preferred Stock issuable upon exercise of the Series B Placement Warrants.

Each Selling  Securityholder may, but is not required to, sell all of the shares
of Common  Stock shown in the column  entitled  "Amount of Shares to be Offered"
subject,  in certain  instances,  to lock-up  provisions.  See  "Description  of
Securities   --Lock-Up   Agreements."  The  Selling   Securityholders   and  any
broker-dealers  that act in  connection  with the  sale of the  Common  Stock as
principals  may be deemed to be  "underwriters"  within  the  meaning of Section
2(11)  of the Act and any  commission  received  by them and any  profit  on the
resale of such  securities  as  principals  might be  deemed to be  underwriting
discounts and commissions under the Act. The Selling  Securityholders  may agree
to  indemnify  any  agent,   dealer  or  broker-dealer   that   participates  in
transactions  involving sales of such securities certain liabilities,  including
liabilities  arising  under the Act.  The Company  will not receive any proceeds
from the sales of the Common Stock by the Selling Securityholders,  although the
Company may receive proceeds from the exercise of the Placement Warrants.  Sales
of the  shares  of  Common  Stock by the  Selling  Securityholders,  or even the
potential sale of such shares, may have an adverse effect on the market price of
the Common Stock.

At the time a particular offer for Common Stock is made, as herein contemplated,
by or on  behalf  of the  Selling  Securityholder,  to the  extent  required,  a
Prospectus  will be  distributed  by the Selling  Securityholder  which will set
forth the number of shares of Common  Stock  being  offered and the terms of the
Offering, including the name or names of any underwriters, dealers or agents, if
any, and to the extent that an underwriter is involved,  the purchase price paid
by any underwriter for shares purchased from the Selling  Securityholder and any
discounts, commissions or concessions allowed or reallowed or paid to dealers.

Except  as  noted  below,  none  of the  Selling  Securityholders  named  in the
preceding table has had any position, office or other material relationship with
the  Company  or any of its  predecessors  or  affiliates  within the past three
years.  The Aries Domestic Fund,  L.P. and The Aries Fund, A Cayman Island Trust
are private investment funds managed by Dr. Lindsay A. Rosenwald,  a substantial
shareholder  and former director of the Company and the sole owner of Paramount.
See "Certain Transactions."




                                       61

<PAGE>

                        SHARES ELIGIBLE FOR FUTURE SALES

   
Upon  completion of the  Offering,  the Company will have  12,894,870  shares of
Common Stock outstanding,  reserved for issuance or issuable upon the conversion
of the Series B Preferred  Stock,  the exercise of all  outstanding  or issuable
options  and  warrants  as of the date of this  prospectus.  As of May 5,  1998,
4,923,570  shares of Common  Stock  were  issued and  outstanding,  of which the
Company believes that, other than those shares registered in this offering, only
1,487,822  shares of Common Stock are "restricted  securities" and under certain
circumstances  may, in the future, be sold in compliance with Rule 144 under the
Securities Act of 1933 (the "Act"),  unless they are held by "affiliates" of the
Company as that term is used under the Act. In addition,  the Company has issued
and outstanding,  or issuable,  warrants and options to purchase an aggregate of
2,937,476  shares of  Common  Stock  (excluding  49,229  shares of Common  Stock
underlying  Series B Placement  Warrants and Bridge Placement  Warrants that are
being registered in this Offering) and 4,984,595 shares of Common Stock that are
issuable upon conversion of shares of Series B Preferred Stock.  Also, as of May
5, 1998, the Company believes that there are approximately 3,435,748 outstanding
shares of Common Stock that are eligible for sale without restriction or further
registration  under  the  Act,  subject  to  certain  requirements.   See  "Risk
Factors--Potential  Adverse  Effect of Shares  Eligible  For  Future  Sales" and
"Description of Securities".
    

SALES OF RESTRICTED SHARES

   
As of May 5, 1998, 4,923,570 shares of Common Stock were issued and outstanding,
of which the Company believes that,  other than those shares  registered in this
offering,  only 1,487,822 shares of Common Stock are "restricted securities" and
under certain  circumstances may, in the future, be sold in compliance with Rule
144 under the Act,  unless they are held by  "affiliates" of the Company as that
term is used under the Act. In general,  under Rule 144 as  currently in effect,
subject to the satisfaction of certain conditions and certain manner of sale and
notice  requirements,  including the requirement  that there is adequate current
public  information  with respect to the Company as  contemplated by Rule 144, a
person (or persons whose shares are  aggregated),  including  persons who may be
deemed an  affiliate  of the Company as that term is defined  under the Act, who
beneficially  owned  restricted  shares of Common Stock for at least one year is
entitled to sell,  within any three-month  period,  a number of shares that does
not exceed (i) the  greater of one  percent of the total  number of  outstanding
shares of the same class,  or (ii) the average  weekly trading volume during the
four calendar  weeks  immediately  preceding the sale. A person who presently is
not and who has not been an  affiliate  of the Company for at least three months
immediately  preceding  the sale and who has  beneficially  owned the  shares of
Common  Stock for at least two years is entitled to sell such shares  under Rule
144(k) without regard to the volume limitations  described above. Certain shares
eligible for sale under Rule 144 remain subject to certain lock-up restrictions.
See "Lock-Up Agreements."
    

No predictions can be made of the effect,  if any, that the sale or availability
for sale of restricted  shares or locked-up shares will have on the market price
of the Common Stock on the Nasdaq SmallCap Market.  Sales of substantial amounts
of such shares in the public  market,  or the  perception  that such sales could
occur,  could  adversely  affect the market  price of the Common Stock and could
impair the Company's  future ability to raise capital through an offering of its
equity securities.

For a  description  of the  Company's  outstanding  warrants  and  options,  see
"Description  of  Securities--1992  Stock Option  Plan,"  "Other  Options,"  and
"Warrants."




                                       62

<PAGE>

                              PLAN OF DISTRIBUTION

   
A total of 6,080,830  shares of Common Stock are being directly offered for sale
by the Selling  Securityholders to the public. The Selling  Securityholders may,
but are not required to, sell, directly or through brokers, the shares of Common
Stock in negotiated transactions or in one or more transactions in the market at
the price prevailing at the time of sale. (Certain of the shares of Common Stock
may be subject to lock-up  agreements.  See "Description of  Securities--Lock-Up
Agreements"). In connection with such sales, the Selling Securityholders and any
participating  broker may be deemed to be "underwriters" of the shares of Common
Stock within the meaning of the Act,  although the offering of these  securities
will not be  underwritten by a  broker-dealer  firm.  Sales in the market may be
made  to   broker-dealers   making  a  market  in  the  Common  Stock  or  other
broker-dealers,  and such  broker-dealer,  upon their resale of such securities,
may be deemed to be "Selling Securityholders" in this offering. The Company will
not receive any of the proceeds from the sale of the Common Stock by the Selling
Securityholders.  Pursuant  to the terms  under  which the  Preferred  Stock and
Placement Warrants were issued and sold, the Company has agreed to indemnify the
Selling  Securityholders  against such liabilities as they may incur as a result
of any untrue  statement  of a material  fact in the  Registration  Statement of
which this Prospectus forms a part, or any omission herein or therein to state a
material fact  necessary in order to make the  statements  made, in the light of
the   circumstances   under  which  they  were  made,   not   misleading.   Such
indemnification  includes liabilities that the Selling Securityholders may incur
under the Act.
    

The Company will bear all costs and expenses of the  registration  under the Act
and certain  state  securities  laws of the Common  Stock and any  discounts  or
commissions payable with respect to sales of such securities.

From time to time, this Prospectus will be supplemented  and amended as required
by the Act. During any time when a supplement or amendment is so required, after
notice from the Company, the Selling Securityholders are required to cease sales
until the Prospectus has been supplemented or amended.

The  Selling  Securityholders  have  advised  the  Company  that  they may sell,
directly or through brokers,  all or a portion of the securities  offered hereby
in negotiated  transactions or in one or more  transactions in the market at the
price prevailing at the time of sale. In connection with such sales, the Selling
Securityholders and any participating  broker may be deemed to be "underwriters"
of the Common Stock within the meaning of the Act. It is anticipated  that usual
and customary brokerage fees will be paid by the Selling  Securityholders in all
open  market  transactions.  The  Company  will pay all other  expenses  of this
Offering.

The  Company  has  advised  the  Selling  Securityholders  that no  NASD  member
participating in the offering of the shares of Common Stock being offered hereby
by the Selling  Securityholders may receive  compensation in excess of 8% of the
proceeds of the sale of such shares. In addition,  the terms and arrangements of
any underwritten offering must be filed with the NASD for its review pursuant to
Section 2710 of the NASD's Corporate Financing Rules.

The Company has informed the Selling  Securityholders that the anti-manipulation
provisions of Regulation M promulgated under the Securities Exchange Act of 1934
may apply to the sales of their shares offered  hereby.  The Company has advised
the Selling  Securityholders  of the requirement for delivery of this Prospectus
in connection with any sale of the Common Stock offered hereby.

Certain Selling  Securityholders may from time to time purchase shares of Common
Stock in the open market. These Selling  Securityholders have been notified that
they should not  commence  any  distribution  of Common  Stock  unless they have
terminated  their  purchasing and bidding for Common Stock in the open market as
provided in applicable securities  regulations,  including,  without limitation,
Regulation M.




                                       63

<PAGE>

                                     EXPERTS

The  financial   statements  of  AVAX   Technologies,   Inc.   (formerly  Walden
Laboratories,  Inc.),  at December 31, 1997 and for the years ended December 31,
1996 and 1997,  appearing in this Prospectus and  Registration  Statement,  have
been audited by Ernst & Young LLP, independent  auditors,  as set forth in their
report thereon  appearing  elsewhere  herein,  and are included in reliance upon
such report given upon the authority of such firm as experts in  accounting  and
auditing.


                                  LEGAL COUNSEL

Legal  matters  relating to the Offering  will be passed upon for the Company by
Roberts,  Sheridan & Kotel,  a  Professional  Corporation,  New York,  New York,
counsel to the Company.  Members of such firm  beneficially  own an aggregate of
26,585 shares of Common Stock  assuming the conversion of all shares of Series B
Preferred  Stock owned by them at the  adjusted  conversion  price.  All of such
shares of Common Stock owned  directly or issuable upon  conversion of shares of
Series B Preferred Stock are included in the Registration Statement.






                                       64

<PAGE>


                             AVAX Technologies, Inc.
                          (a development stage company)

                              Financial Statements


        Years ended December 31, 1996 and 1997 and the three months ended
                             March 31, 1997 and 1998
      (Unaudited) and for the period from January 12, 1990 (Incorporation)
                                to March 31, 1998
                                   (Unaudited)


                                    Contents

Report of Independent Auditors ........................................    F-1

Audited Financial Statements

Balance  Sheets   as of  December  31,  1997 and  March  31,  1998
 (Unaudited) ..........................................................    F-2

Statements  of Operations  for the  years ended  December 31, 1996
 and 1997;  for the three  months  ended  March 31,  1997 and 1998
 (Unaudited);   and  for  the  period   from   January   12,  1990
 (incorporation) to March 31, 1998 (Unaudited) ........................    F-3

Statements of Stockholders'  Equity (Deficit) for the  years ended
 December 31, 1996 and 1997;  for the three months ended March 31,
 1998  (Unaudited);  and for the  period  from  January  12,  1990
 (incorporation) to March 31, 1998 (Unaudited) ........................    F-4

Statements  of Cash Flows for the years  ended  December  31, 1996
 and 1997;  for the three  months  ended  March 31,  1997 and 1998
 (Unaudited);   and  for  the  period   from   January   12,  1990
 (incorporation) to March 31, 1998 (Unaudited) ........................    F-6

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



<PAGE>



                         Report of Independent Auditors

The Board of Directors and Stockholders
AVAX Technologies, Inc.

We have audited the  accompanying  balance sheet of AVAX  Technologies,  Inc. (a
development  stage company) as of December 31, 1997, and the related  statements
of operations, stockholders' equity (deficit) and cash flows for the years ended
December  31,  1996  and  1997,  and  for  the  period  from  January  12,  1990
(incorporation)  to  December  31,  1997.  These  financial  statements  are the
responsibility of the Company's management.  Our responsibility is to express an
opinion on these financial statements based on our audits.

We  conducted  our  audits  in  accordance  with  generally   accepted  auditing
standards. Those standards required 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 financial  statements  referred to above present fairly, in
all material  respects,  the financial  position of AVAX  Technologies,  Inc. at
December 31, 1997 and the results of its  operations  and its cash flows for the
years ended December 31, 1996 and 1997, and for the period from January 12, 1990
(incorporation)  to December 31, 1997, in  conformity  with  generally  accepted
accounting principles.



                                                  Ernst & Young LLP

Kansas City, Missouri
January 16, 1998


                                      F-1
<PAGE>



                             AVAX Technologies, Inc.
                          (a development stage company)
                                 Balance Sheets

<TABLE>
<CAPTION>
                                                                                December 31,      March 31,
                                                                                    1997            1998
                                                                               ----------------------------
Assets                                                                                   (Unaudited)
<S>                                                                            <C>             <C>         
Current assets:
   Cash and cash equivalents                                                   $  6,820,884    $  3,388,303
   Marketable securities                                                          9,102,028      11,264,405
   Common stock receivable from a related party (Note 2)                          1,200,000              --
   Prepaid expenses and other current assets                                        154,929         111,308
                                                                               ----------------------------
Total current assets                                                             17,277,841      14,764,016
Furniture and equipment, at cost                                                     91,959         103,739
   Less accumulated depreciation                                                     14,967          19,582
                                                                               ----------------------------

Net furniture and equipment                                                          76,992          84,157
                                                                               ----------------------------
Total assets                                                                   $ 17,354,833    $ 14,848,173
                                                                               ----------------------------

Liabilities and stockholders' equity Current liabilities:
   Accounts payable and accrued liabilities (Note 5)                           $    353,726    $    380,096
   Amount payable to preferred stockholders (Note 2)                              1,150,200              --
   Amount payable to Former Officer (Note 2)                                         49,800              --
                                                                               ----------------------------
Total current liabilities                                                         1,553,726         380,096
Commitments and contingencies (Note 7)
Stockholders' equity (Notes 3, 4, 7 and 8): Preferred stock, $.01 par value:
     Authorized shares - 5,000,000, including
       Series B - 300,000 shares
     Series B convertible preferred stock:
       Issued and outstanding shares - 204,159 and 193,202 at
         December 31, 1997  and  March  31, 1998,  respectively (liquidation
         preference - $27,561,465 and $26,082,270 at
         December 31, 1997 and March 31, 1998, respectively)                          2,041           1,932
   Common stock, $.004 par value:
     Authorized shares - 50,000,000
     Issued and outstanding shares - 4,582,305 and 4,868,137 at
        December 31, 1997 and March 31, 1998, respectively                           18,329          19,472
   Additional paid-in capital                                                    23,995,640      23,994,606
   Subscription receivable                                                             (432)           (432)
   Deferred compensation                                                           (694,324)       (627,048)
   Deficit accumulated during the development stage                              (7,520,147)     (8,920,453)
                                                                               ----------------------------
Total stockholders' equity                                                       15,801,107      14,468,077
                                                                               ----------------------------
Total liabilities and stockholders' equity                                     $ 17,354,833    $ 14,848,173
                                                                               ----------------------------
</TABLE>


See accompanying notes.


                                      F-2
<PAGE>


                             AVAX Technologies, Inc.
                          (a development stage company)
                            Statements of Operations

<TABLE>
<CAPTION>

                                                                                                                       Period from
                                                                                                                        January 12,
                                                                                                                            1990
                                                                                                                     (Incorporation)
                                                     Year ended                         Three months ended                   to
                                                     December 31,                            March 31,                   March 31,
                                                1996              1997                1997               1998               1998
                                           -----------------------------------------------------------------------------------------
                                                                                  (Unaudited)        (Unaudited)        (Unaudited)
<S>                                        <C>                <C>                <C>                <C>                <C>         
Gain from sale of the
   Product (Note 2)                        $         --       $         --       $         --       $         --       $  1,951,000

Costs and expenses:
   Research and development                     738,991          2,448,976            379,769            957,364          5,758,649
   Marketing and selling                             --                 --                 --                 --            543,646
   General and
     administrative                           1,253,395          2,724,007            822,513            650,652          6,212,796
                                           -----------------------------------------------------------------------------------------
Total operating loss                         (1,992,386)        (5,172,983)        (1,202,282)        (1,608,016)       (10,564,091)

Other income (expense):
   Interest income                              819,324          1,057,460            279,965            207,710          2,144,163
   Interest expense                            (353,867)          (150,602)                           (39,848) -           (646,293)
   Other, net                                    (9,913)                --                 --                 --            145,768
                                           -----------------------------------------------------------------------------------------
Total other income, net                         455,544            906,858            240,117            207,710          1,643,638
                                           -----------------------------------------------------------------------------------------

Net loss                                     (1,536,842)        (4,266,125)          (962,165)        (1,400,306)        (8,920,453)
Amount payable for
   liquidation preference                    (1,131,744)                --                 --                 --         (1,870,033)
                                           -----------------------------------------------------------------------------------------
   
Net loss attributable
   to common stockholders                  $ (2,668,586)      $ (4,266,125)      $   (962,165)      $ (1,400,306)      $(10,790,486)
                                           =========================================================================================

Net loss per common share -
   basic                                   $       (.84)      $      (1.14)      $       (.28)      $       (.30)
                                           ======================================================================

Weighted average number of
   common shares outstanding
                                              3,182,058          3,750,440          3,379,450          4,725,221
                                           ======================================================================
</TABLE>


See accompanying notes.


                                      F-3
<PAGE>


                             AVAX Technologies, Inc.
                          (a development stage company)
                  Statements of Stockholders' Equity (Deficit)

<TABLE>
<CAPTION>
                                                                                                                                    
                                                    Series A                         Series B                                       
                                                   Convertible                      Convertible                                     
                                                 Preferred Stock                  Preferred Stock                Common Stock       
                                            ----------------------------------------------------------------------------------------
                                               Shares        Amount            Shares        Amount          Shares        Amount   
                                            ----------------------------------------------------------------------------------------
<S>                                         <C>             <C>                    <C>       <C>          <C>            <C>
Issuance of common stock for                                                  
   services in January 1990                        --       $    --                --        $   --         582,500      $  2,330   
     Net loss                                      --            --                --            --              --            --   
                                            ----------------------------------------------------------------------------------------
Balance at December 31, 1990                       --            --                --            --         582,500         2,330   
   Issuance of common stock for                                                                           
     services in August 1991                       --            --                --            --         230,000           920   
   Net loss                                        --            --                --            --              --            --   
                                            ----------------------------------------------------------------------------------------
Balance at December 31, 1991                       --            --                --            --         812,500         3,250   
   Conversion of note payable to                                                                          
     related party to common stock                 --            --                --            --          22,913            92   
     in June 1992                                                                                         
   Issuance of common stock for                                                                           
     services in May and June 1992                 --            --                --            --         264,185         1,056   
   Issuance of Series A convertible                                                                       
     preferred stock, net of                                                                              
     issuance cost in June, July            1,287,500        12,875                --            --              --            --   
     and September 1992                                                                                   
   Net loss                                        --            --                --            --              --            --   
                                            ----------------------------------------------------------------------------------------
Balance at December 31, 1992                1,287,500        12,875                --            --       1,099,598         4,398   
   Issuance of common stock for                                                                           
     services in July and November 1993            --            --                --            --           8,717            35   
   Net loss                                        --            --                --            --              --            --   
                                            ----------------------------------------------------------------------------------------
Balance at December 31, 1993                1,287,500        12,875                --            --       1,108,315         4,433   
   Issuance of common stock for                                                                           
     services in July 1994                         --            --                --            --           3,750            15   
   Net loss                                        --            --                --            --              --            --   
                                            ----------------------------------------------------------------------------------------
Balance at December 31, 1994                1,287,500        12,875                --            --       1,112,065         4,448   
   Common stock returned and                                                                              
     canceled in April and May 1995                --            --                --            --        (307,948)       (1,232)  
   Shares issued in September and                                                                         
     November 1995                                 --            --                --            --       1,777,218         7,109   
   Amount payable for liquidation                  --            --                --            --              --            --   
     preference                                                                                           
   Net income                                      --            --                --            --              --            --   
                                            ----------------------------------------------------------------------------------------
Balance at December 31, 1995                1,287,500        12,875                --            --       2,581,335        10,325   
                                                                                                          
<CAPTION>
                                                                                                         Deficit                  
                                                                                        Unrealized     Accumulated        Total    
                                             Additional                                   Loss on       During the     Stockholders'
                                              Paid-In   Subscription       Deferred      Marketable     Development       Equity  
                                              Capital    Receivable      Compensation    Securities        Stage        (Deficit)
                                            ----------------------------------------------------------------------------------------
<S>                                         <C>            <C>             <C>          <C>           <C>               <C>        
Issuance of common stock for
   services in January 1990                 $      920     $    --         $   --       $   --        $       --        $     3,250
     Net loss                                       --          --             --           --              (889)              (889)
                                            ----------------------------------------------------------------------------------------
Balance at December 31, 1990                       920          --             --           --              (889)             2,361
   Issuance of common stock for                                                                                       
     services in August 1991                     5,830          --             --           --                --              6,750
   Net loss                                         --          --             --           --           (97,804)           (97,804)
                                            ----------------------------------------------------------------------------------------
Balance at December 31, 1991                     6,750          --             --           --           (98,693)           (88,693)
   Conversion of note payable to                                                                                      
     related party to common stock                                                                                    
     in June 1992                              160,465          --             --           --                --            160,557
   Issuance of common stock for                                                                                       
     services in May and June 1992               6,444          --             --           --                --              7,500
   Issuance of Series A convertible                                                                                   
     preferred stock, net of                                                                                          
     issuance cost in June, July                                                                                      
     and September 1992                      2,258,837          --             --           --                --          2,271,712
   Net loss                                         --          --             --           --          (607,683)          (607,683)
                                            ----------------------------------------------------------------------------------------
Balance at December 31, 1992                 2,432,496          --             --           --          (706,376)         1,743,393
   Issuance of common stock for                                                                                       
     services in July and November 1993         24,965          --             --           --                --             25,000
                                            ----------------------------------------------------------------------------------------
   Net loss                                         --          --             --           --        (1,610,154)        (1,610,154)
                                            ----------------------------------------------------------------------------------------
Balance at December 31, 1993                 2,457,461          --             --           --        (2,316,530)           158,239
   Issuance of common stock for                                                                                       
     services in July 1994                       4,485          --             --           --                --              4,500
   Net loss                                         --          --             --           --          (781,221)          (781,221)
                                            ----------------------------------------------------------------------------------------
Balance at December 31, 1994                 2,461,946          --             --           --        (3,097,751)          (618,482)
   Common stock returned and                                                                                          
     canceled in April and May 1995                 --          --             --           --                --             (1,232)
   Shares issued in September and                                                                                     
     November 1995                                  --      (7,109)            --           --                --                 --
   Amount payable for liquidation                                                                                     
     preference                               (738,289)         --             --           --                --           (738,289)
   Net income                                       --          --             --           --         1,380,571          1,380,571
                                            ----------------------------------------------------------------------------------------
Balance at December 31, 1995                 1,723,657      (7,109)            --           --        (1,717,180)            22,568
</TABLE>


                                       F-4
<PAGE>      


                                  
                             AVAX Technologies, Inc.
                          (a development stage company)
            Statements of Stockholders' Equity (Deficit) (continued)
<TABLE>
<CAPTION>
                                                                                                                                    
                                                Series A                         Series B                                       
                                               Convertible                      Convertible                                     
                                             Preferred Stock                  Preferred Stock                Common Stock       
                                         -------------------------------------------------------------------------------------------
                                           Shares        Amount            Shares        Amount          Shares        Amount   
                                         -------------------------------------------------------------------------------------------
<S>                                      <C>           <C>                  <C>        <C>               <C>           <C>
Balance at December 31, 1995              1,287,500    $     12,875              --    $         --       2,581,335    $     10,325
   Repurchase of common stock
     in March 1996                               --              --              --              --         (77,901)           (312)
   Payment of subscription                       --              --              --              --              --              -- 
   receivable
   Conversion of Series A
     preferred stock in June 1996        (1,287,500)        (12,875)             --              --         321,875           1,288
   Issuance of common stock and
     Series B preferred stock in a
     private placement in May and                --              --         258,198           2,582         129,099             516
     June 1996
   Issuance of common stock
     and Series B preferred
     stock for services in                       --              --           1,000              10             500               2
     June 1996
   Exercise of warrants in June and              --              --              --              --         156,250             626
     July 1996
   Amount payable for liquidation                --              --              --              --              --              -- 
     preference
   Compensation related to stock
     options granted in May and                  --              --              --              --              --              -- 
     September 1996
   Amortization of deferred                      --              --              --              --              --              -- 
   compensation
   Unrealized loss on marketable                 --              --              --              --              --              -- 
   securities
   Net loss                                      --              --              --              --              --              -- 
                                         -------------------------------------------------------------------------------------------
Balance at December  31, 1996                    --              --         259,198           2,592       3,111,158          12,445
   Payment of subscription                       --              --              --              --              --              -- 
   receivable
   Write-off of subscription                     --              --              --              --              --              -- 
   receivable
   Exercise of warrants in
     April and June 1997                         --              --              --              --          49,770             199
   Conversion of preferred to                    --              --         (55,039)           (551)      1,421,403           5,685
   common stock
   Repurchase of fractional shares               --              --              --              --             (26)             -- 
   Realization of loss on marketable             --              --              --              --              --              -- 
     securities
   Amortization of deferred                      --              --              --              --              --              -- 
   compensation
   Net loss                                      --              --              --              --              --              -- 
                                         -------------------------------------------------------------------------------------------
Balance at December  31, 1997                    --    $         --         204,159    $      2,041       4,582,305    $     18,329
   Conversion of preferred to                    --              --         (10,957)           (109)        285,832           1,143
   common stock
   Amortization of deferred                      --              --              --              --              --              -- 
   compensation
   Net loss                                      --              --              --              --              --              -- 
                                         -------------------------------------------------------------------------------------------
Balance at March  31, 1998                       --    $         --         193,202    $      1,932       4,868,137    $     19,472
                                         ===========================================================================================

<CAPTION>
                                                                                                         Deficit                  
                                                                                         Unrealized     Accumulated       Total    
                                          Additional                                       Loss on       During the    Stockholders'
                                           Paid-In       Subscription       Deferred      Marketable     Development      Equity  
                                           Capital        Receivable      Compensation    Securities        Stage       (Deficit)
<S>                                    <C>             <C>             <C>             <C>             <C>             <C>         
Balance at December 31, 1995           $  1,723,657    $     (7,109)   $         --    $         --    $ (1,717,180)   $     22,568
   Repurchase of common stock
     in March 1996                               --             312              --              --              --              --
   Payment of subscription                       --           2,771              --              --              --           2,771
   receivable
   Conversion of Series A
     preferred stock in June 1996            11,587              --              --              --              --              --
   Issuance of common stock and
     Series B preferred stock in a
     private placement in May and        22,217,397              --              --              --              --      22,220,495
     June 1996
   Issuance of common stock
     and Series B preferred
     stock for services in                   99,988              --              --              --              --         100,000
     June 1996
   Exercise of warrants in June and           5,624              --              --              --              --           6,250
     July 1996
   Amount payable for liquidation        (1,131,744)             --              --              --              --      (1,131,744)
     preference
   Compensation related to stock
     options granted in May and           1,076,373              --      (1,076,373)             --              --              --
     September 1996
   Amortization of deferred                      --              --         112,949              --              --         112,949
   compensation
   Unrealized loss on marketable                 --              --              --          (2,037)             --          (2,037)
   securities
   Net loss                                      --              --              --              --      (1,536,842)     (1,536,842)
                                       --------------------------------------------------------------------------------------------
Balance at December  31, 1996            24,002,882          (4,026)       (963,424)         (2,037)     (3,254,022)     19,794,410
   Payment of subscription                       --           1,761              --              --              --           1,761
   receivable
   Write-off of subscription                 (1,833)          1,833              --              --              --              --
   receivable
   Exercise of warrants in
     April and June 1997                       (199)             --              --              --              --              --
   Conversion of preferred to                (5,134)             --              --              --              --              --
   common stock
   Repurchase of fractional shares              (76)             --              --              --              --             (76)
   Realization of loss on marketable             --              --              --           2,037              --           2,037
     securities
   Amortization of deferred                      --              --         269,100              --              --         269,100
   compensation
   Net loss                                      --              --              --              --      (4,266,125)     (4,266,125)
                                       --------------------------------------------------------------------------------------------
Balance at December  31, 1997          $ 23,995,640    $       (432)   $   (694,324)   $         --    $ (7,520,147)   $ 15,801,107

   Conversion of preferred to                (1,034)             --              --              --              --              --
   common stock
   Amortization of deferred                      --              --          67,276              --              --          67,276
   compensation
   Net loss                                      --              --              --              --      (1,400,306)     (1,400,306)
                                       --------------------------------------------------------------------------------------------
Balance at March  31, 1998             $ 23,994,606    $       (432)   $   (627,048)   $         --    $ (8,920,453)   $ 14,468,077
                                       ============================================================================================
</TABLE>


See accompanying notes.


                                       F-5

<PAGE>


                             AVAX Technologies, Inc.
                          (a development stage company)
                            Statements of Cash Flows

<TABLE>
<CAPTION>
                                                                                                                        Period from 
                                                                                                                          January
                                                                                                                         12, 1990
                                                                                                                     (Incorporation)
                                                 Year ended December 31,            Three months ended March 31,        to March 31,
                                                 1996               1997               1997               1998               1998
                                           -----------------------------------------------------------------------------------------
Operating activities                                                              (Unaudited)        (Unaudited)        (Unaudited)
<S>                                        <C>                <C>                <C>                <C>                <C>          
Net loss                                   $ (1,536,842)      $ (4,266,125)      $   (962,165)      $ (1,400,306)      $ (8,920,453)
Adjustments to reconcile
   net loss to net cash
   used in operating
   activities:
     Depreciation and                           164,865            282,061             69,678             71,891            584,212
       amortization
     Gain from sale of the                           --                 --                 --                 --         (1,951,000)
       Product
     Gain on sale of
       intellectual property                         --                 --                 --                 --               (787)
     Accretion of interest
       on common stock                         (298,459)          (150,541)           (39,848)                --           (449,000)
       receivable
     Accretion of
       interest on amount
       payable to
       preferred                                298,459            150,541             39,848                 --            449,000
       stockholders and
       Former Officer
     Loss on sale or
       abandonment of                             8,156                 --                 --                 --             37,387
       furniture and
       equipment
     Issuance of common
       stock for services                       100,000                 --                 --                 --            147,000
     Changes in operating
       assets and
       liabilities:
       Prepaid expenses
         and other                              (61,285)           (93,644)           (24,519)            43,621           (111,308)
         current assets
       Accounts payable and
         accrued liabilities                      2,933             76,048             41,234             26,370            380,096
       Amount payable to
         Former Officer                              --                 --                 --                 --             80,522
                                           -----------------------------------------------------------------------------------------
Net cash used in operating
   activities                                (1,322,173)        (4,001,660)          (875,772)        (1,258,424)        (9,754,331)
Investing activities
Purchase of marketable
   securities and short-term                 (6,136,890)        (9,102,028)        (2,055,372)        (2,162,377)       (18,380,877)
   investments
Proceeds from sale of
   short-term investments                            --          6,136,890                 --                 --          7,116,472
Purchases of furniture and
   equipment                                    (45,777)           (46,182)           (13,828)           (11,780)          (169,673)
Proceeds from sale of
   furniture and equipment                           --                 --                 --                 --              4,600
Organization costs incurred                          --                 --                 --                 --             (1,358)
                                           -----------------------------------------------------------------------------------------
Net cash used in investing                   (6,182,667)        (3,011,320)        (2,069,200)        (2,174,157)       (11,430,836)
   activities
</TABLE>



                                      F-6
<PAGE>

                             AVAX Technologies, Inc.
                          (a development stage company)
                      Statements of Cash Flows (continued)

<TABLE>
<CAPTION>
                                                                                                                        Period from 
                                                                                                                          January
                                                                                                                         12, 1990
                                                                                                                     (Incorporation)
                                                 Year ended December 31,            Three months ended March 31,        to March 31,
                                                 1996               1997               1997               1998               1998
                                               -------------------------------------------------------------------------------------
Financing activities                                                                 (Unaudited)       (Unaudited)       (Unaudited)
<S>                                            <C>               <C>               <C>               <C>               <C>         
Proceeds from issuance of
   notes payable to
   related party                               $         --      $         --      $         --      $         --      $    957,557
Principal payments on
   notes payable to
   related party                                   (207,000)               --                --                --          (797,000)
Proceeds from loans payable                         400,000                --                --                --         1,389,000
Principal payments on loans
   payable                                       (1,050,000)               --                --                --        (1,389,000)
Payments for fractional
   shares from reverse
   splits and preferred
   stock conversions                                     --               (76)               --                --               (76)
Financing costs incurred                            (36,000)               --                --                --           (90,000)
Payments received on
   subscription receivable                            2,771             1,761                --                --             4,532
Proceeds received from
   exercise of stock warrants                         6,250                --                --                --             6,250
Net proceeds received
   from issuance of
   preferred and common
   stock                                         22,220,495                --                --                --        24,492,207
                                               -------------------------------------------------------------------------------------
Net cash provided by
   financing activities                          21,336,516             1,685                --                --        24,573,470
                                               -------------------------------------------------------------------------------------

Net increase (decrease) in
   cash and cash equivalents                     13,831,676        (7,011,295)       (2,944,972)       (3,432,581)        3,388,303
Cash and cash
   equivalents at
   beginning of period                                  503        13,832,179        13,832,179         6,820,884                --
                                                ------------------------------------------------------------------------------------
Cash and cash equivalents at
   end of period                               $ 13,832,179      $  6,820,884      $ 10,887,207      $  3,388,303      $  3,388,303
                                               =====================================================================================

Supplemental disclosure of
   cash flow information
Interest paid                                  $    157,721      $         --      $         --      $         --           197,072
                                               =====================================================================================
</TABLE>

See accompanying notes.



                                      F-7
<PAGE>


                             AVAX Technologies, Inc.
                          (a development stage company)

                          Notes to Financial Statements

(Unaudited  with  respect to the three  months ended March 31, 1997 and 1998 and
     for the period from January 12, 1990 (incorporation) to March 31, 1998)


1. Description of Business and Significant Accounting Policies

Description of Business

AVAX Technologies,  Inc. (the Company) is a development stage  biopharmaceutical
company.

In November 1995,  the Company sold its leading  product under  development,  an
over-the-counter   nutritional,   dietary,  medicinal  and/or  elixorative  food
supplement  or drug  and  all of the  related  patents  and  other  intellectual
property (the Product) (see Note 2).

Also in November  1995,  the Company  entered into a license  agreement with the
Thomas Jefferson University (TJU) to develop,  commercially manufacture and sell
products  embodying  immunotherapeutic  vaccines for the  treatment of malignant
melanoma and other cancers (the Invention) (see Note 3).

In December  1996,  the Company  entered into a license  agreement  with Rutgers
University  (Rutgers) to develop,  commercially  manufacture  and sell  products
embodying  a series of  compounds  for the  treatment  of cancer and  infectious
diseases (the Compounds) (see Note 3).

In February 1997, the Company entered into a license agreement with Texas A&M to
develop,  commercially  manufacture  and sell  products  embodying  a series  of
compounds for the treatment of cancer (the Texas A&M Compounds) (see Note 3).

The  Company's   business  is  subject  to  significant  risks  consistent  with
biotechnology  companies that are developing products for human therapeutic use.
These risks include,  but are not limited to,  uncertainties  regarding research
and development,  access to capital,  obtaining and enforcing patents, receiving
regulatory approval, and competition with other biotechnology and pharmaceutical
companies.  The  Company  plans to continue  to finance  its  operations  with a
combination of equity and debt financing and, in the longer term,  revenues from
product  sales,  if  any.  However,  there  can be no  assurance  that  it  will
successfully  develop any product or, if it does, that the product will generate
any or sufficient revenues.


                                      F-8
<PAGE>


                             AVAX Technologies, Inc.
                          (a development stage company)

                          Notes to Financial Statements

(Unaudited  with  respect to the three  months ended March 31, 1997 and 1998 and
     for the period from January 12, 1990 (incorporation) to March 31, 1998)


1. Description of Business and Significant Accounting Policies (continued)

Interim Financial Statements

The interim  financial  statements  at March 31,  1998 and for the three  months
ended  March  31,  1997  and 1998  and for the  period  from  January  12,  1990
(incorporation)  to March 31,  1998 are  unaudited;  however,  in the opinion of
management,  all  adjustments,  consisting  only of normal  recurring  accruals,
necessary for a fair presentation have been included. Results of interim periods
are not necessarily indicative of results to be expected for the entire year.

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  reported  amounts  of assets  and  liabilities  and  disclosure  of
contingent  assets and  liabilities at the date of the financial  statements and
the reported amounts of revenues and expenses during the reported period. Actual
results could differ from those estimates.

Cash Equivalents

The Company considers all highly liquid financial instruments with a maturity of
three months or less when purchased to be cash equivalents. At December 31, 1997
and March 31, 1998,  all cash and cash  equivalents  were held at two  financial
institutions.

Marketable Securities

Management  determines the appropriate  classification of debt securities at the
time of purchase and reevaluates such designation as of each balance sheet date.
Debt  securities  are  classified as  held-to-maturity  when the Company has the
positive intent and ability to hold the securities to maturity. Held-to-maturity
securities are stated at amortized cost,  adjusted for  amortization of premiums
and  accretion  of  discounts to  maturity.  Such  amortization  and interest on
securities classified as held-to-maturity are included in interest income.



                                      F-9
<PAGE>


                             AVAX Technologies, Inc.
                          (a development stage company)

                          Notes to Financial Statements

(Unaudited  with  respect to the three  months ended March 31, 1997 and 1998 and
     for the period from January 12, 1990 (incorporation) to March 31, 1998)


1. Description of Business and Significant Accounting Policies (continued)

Equity  securities  are  classified  as  available-for-sale.  Available-for-sale
securities are carried at fair value, with any unrealized gains and losses,  net
of tax, reported in a separate component of stockholders'  equity.  Interest and
dividends  on  securities  classified  as  available-for-sale  are  included  in
interest income.

The  following is a summary of  marketable  securities  at December 31, 1997 and
March 31, 1998:

<TABLE>
<CAPTION>
                                                                      Unrealized            Estimated
             Description of Securities                             Cost          Loss       Fair Value
- ------------------------------------------------------------------------------------------------------
<S>                                                            <C>           <C>           <C>        
December 31, 1997 Held-to-maturity debt securities:
   Commercial paper                                            $ 9,024,625   $        --   $ 9,024,625
   U.S. Treasury securities                                         77,403            --        77,403
                                                               ---------------------------------------
                                                               $ 9,102,028   $        --   $ 9,102,028
                                                               =======================================

March 31, 1998 (Unaudited) Held-to-maturity debt securities:
   Commercial paper                                            $10,695,976   $        --   $10,695,976
   U.S. Treasury securities                                        568,429            --       568,429
                                                               ---------------------------------------
                                                               $11,264,405   $        --   $11,264,405
                                                               =======================================
</TABLE>


The Company's debt  securities  held at December 31, 1997 and March 31, 1998 all
mature in 1998.

Depreciation

Depreciation  is computed  using the  straight-line  method  over the  estimated
useful lives of the furniture and equipment, which range from three to 10 years.

Research and Development Costs

Research  and  development  costs,  including  payments  related to patents  and
license agreements, are expensed when incurred.


                                      F-10
<PAGE>


                             AVAX Technologies, Inc.
                          (a development stage company)

                          Notes to Financial Statements

(Unaudited  with  respect to the three  months ended March 31, 1997 and 1998 and
     for the period from January 12, 1990 (incorporation) to March 31, 1998)


1.  Description of Business and Significant Accounting Policies (continued)

Deferred Compensation

Certain compensation costs are deferred and amortized over the vesting period of
such compensation.

Share Information

Prior to the first closing of a private  placement on May 15, 1996 (see Note 4),
the  Company  effected a 1-for-2  reverse  stock split of the  Company's  common
stock.  Pursuant to an amendment to the Company's  Certificate of  Incorporation
dated May 7, 1997, a second 1-for-2 reverse split of the Company's  common stock
was effected as of the close of business on May 13, 1997. All outstanding  share
and per share amounts  included in the  accompanying  financial  statements have
been adjusted to reflect both 1-for-2 reverse stock splits.

Earnings Per Share

In 1997, the Financial  Accounting  Standards  Board (FASB) issued  Statement of
Financial  Accounting  Standards (SFAS) No. 128,  "Earnings Per Share." SFAS No.
128 replaced the  calculation  of primary and fully  diluted  earnings per share
with basic and diluted  earnings per share.  Unlike primary  earnings per share,
basic earnings per share exclude any dilutive  effects of options,  warrants and
convertible  securities.  Diluted  earnings  per  share is very  similar  to the
previously  required  fully diluted  earnings per share.  All earnings per share
amounts for all periods have been presented, and where appropriate,  restated to
conform to the SFAS No. 128 requirements.

Net loss per share is based on net loss  divided by weighted  average  number of
shares of common stock outstanding  during the respective  periods,  adjusted to
reflect the reverse stock splits.  The weighted  average number of common shares
outstanding has been calculated in accordance with Staff Accounting  Bulletin 83
(SAB 83) of the Securities and Exchange Commission.  SAB 83 requires that shares
of common  stock,  warrants  and  options  issued one year prior to the  initial
filing of a registration  statement  relating to an initial  public  offering at
amounts  below the  public  offering  price be  considered  outstanding  for all
periods  presented  in the  Company's  registration  statement.  For purposes of
calculating  the  net  loss  per  share,  the  private  placement  of  Series  B
convertible  preferred  stock  (see  Note  4)  has  been  considered  to be  the
equivalent  of an initial  filing of a  registration  statement  relating  to an
initial public offering, and the initial public offering price was determined to
be $3.92 per share by assuming that the preferred stock issued


                                      F-11
<PAGE>


                             AVAX Technologies, Inc.
                          (a development stage company)

                          Notes to Financial Statements

(Unaudited  with  respect to the three  months ended March 31, 1997 and 1998 and
     for the period from January 12, 1990 (incorporation) to March 31, 1998)


1. Description of Business and Significant Accounting Policies (continued)

was  immediately  converted  into common  stock.  Those shares of common  stock,
warrants and options (see Note 4),  considered as cheap stock in accordance with
SAB 83, were considered  outstanding for all periods, prior to July 10, 1997, at
which time the  Company's  registration  statement  on Form SB-2 to register the
shares sold in the private placement was declared effective.

The following  table sets forth the  computation of the Company's basic earnings
per share information, adjusted for the SAB 83 requirements, as discussed above.
Diluted earnings per share information is not presented, as the effects of stock
options, warrants and other convertible securities would be antidilutive for the
periods presented.

<TABLE>
<CAPTION>
                                               Year ended          Three months ended
                                                              --------------------------
                                December 31,   December 31,     March 31,      March 31,
                                    1996           1997            1997          1998
                                --------------------------------------------------------
Numerator (basic):                                             (Unaudited)    (Unaudited)
<S>                             <C>            <C>            <C>            <C>         
   Net loss                     $(1,536,842)   $(4,266,125)   $  (962,165)   $(1,400,306)
   Amount payable for
     liquidation preference      (1,131,744)            --             --             --
                                --------------------------------------------------------
Numerator - loss available to
   common stockholders          $(2,668,586)   $(4,266,125)   $  (962,165)   $(1,400,306)
                                ========================================================

Denominator (basic):
   Weighted average shares        2,859,126      3,616,906      3,111,158      4,725,221
   Effect of stock issuances,
    stock options and warrants
    issued  within one year       
    prior  to  the  initial
    public  offering  (IPO)
    at  prices  below  the
    IPO price                       322,932        133,534        268,292             --
                                --------------------------------------------------------
Denominator                       3,182,058      3,750,440      3,379,450      4,725,221
                                ========================================================
Net loss per share - basic      $      (.84)   $     (1.14)   $      (.28)   $      (.30)
                                ========================================================
</TABLE>



                                      F-12
<PAGE>


                             AVAX Technologies, Inc.
                          (a development stage company)

                          Notes to Financial Statements

(Unaudited  with  respect to the three  months ended March 31, 1997 and 1998 and
     for the period from January 12, 1990 (incorporation) to March 31, 1998)


1.  Description of Business and Significant Accounting Policies (continued)

Stock-Based Compensation

In October  1995,  the FASB  issued SFAS No. 123,  "Accounting  for  Stock-Based
Compensation."  SFAS No. 123 is  effective  for  fiscal  years  beginning  after
December 31, 1995 and  prescribes  accounting  and  reporting  standards for all
stock-based  compensation  plans,  including employee stock options,  restricted
stock, employee stock purchase plans and stock appreciation rights. SFAS No. 123
requires compensation expense to be recorded (i) using the new fair value method
or (ii) using  existing  accounting  rules  prescribed by Accounting  Principles
Board Opinion No. 25,  "Accounting for Stock Issued to Employees,"  (APB 25) and
related  interpretations,  with pro  forma  disclosure  of what net  income  and
earnings  per share would have been had the  Company  adopted the new fair value
method.  The Company  has  elected to  continue  to account for its  stock-based
compensation  plans in accordance  with the provisions of APB 25. See Note 4 for
the pro forma effects of applying SFAS No. 123.

2.  Sale of the Product

In December 1995, the Company  entered into an agreement to sell the Product for
$2.4  million in shares of common  stock of  Interneuron  Pharmaceuticals,  Inc.
(IPI), a public company, the parent of the purchaser of the Product (the Stock).
Certain common  stockholders of the Company are also common stockholders of IPI.
The purchase price, payable in two equal installments in December 1996 and 1997,
is fixed,  and the  number of shares  of the Stock  will vary  depending  on the
quoted market price of the Stock at such time.

The first  installment was paid on January 3, 1997 in the form of a distribution
of IPI stock directly by IPI to the Series A convertible preferred stockholders,
who were holders of record on the closing date of the  agreement  for sale,  and
the Company's former President and Chief Executive Officer (the Former Officer).
The final installment was received on January 14, 1998. Accordingly,  the common
stock  receivable  and the  payables to  preferred  stockholders  and the Former
Officer  related  to  this  transaction  are  reported  as  current  assets  and
liabilities,  respectively, in the accompanying balance sheet as of December 31,
1997.

The sale of the  Product  was  approved  by the  Company's  common  and Series A
preferred stockholders subject to the following conditions:

     o    At  approximately  the same time each  installment was received by the
          Company,  95.85% of the Stock was to be distributed by the Company, or
          directly by IPI,  to the  Company's 


                                      F-13
<PAGE>


                             AVAX Technologies, Inc.
                          (a development stage company)

                          Notes to Financial Statements

(Unaudited  with  respect to the three  months ended March 31, 1997 and 1998 and
     for the period from January 12, 1990 (incorporation) to March 31, 1998)


2. Sale of the Product (continued)

          preferred stockholders of record (referred to herein as the holders of
          Series A preferred stock) at the time sale of the Product closed, on a
          pro rata basis,  to reduce  their  liquidation  preference,  provided,
          however, that if at the time of each installment, any of the Company's
          indebtedness  which had been outstanding at the time of the closing of
          the agreement to sell the Product  (December 27, 1995) and is then due
          and payable,  the Company was to cause such indebtedness to be paid or
          provided  for,   whether  by  use  of  available  cash,   refinancing,
          redirecting  a portion of the Stock to satisfy such  indebtedness,  or
          otherwise, as the Company would determine in its best interest.

     o    The remaining 4.15% of the Stock (or a cash payment equal to the value
          thereof)  was to be  distributed  to the  Former  Officer  in  partial
          consideration  for his resignation  from the Company and the return to
          the Company of all common  stock of the Company  and  cancellation  of
          options to purchase 62,500 shares of common stock (see Note 8).

Other than for the Former Officer,  none of the other common  stockholders  were
entitled to any of the Stock.

Because the Stock was receivable in two equal annual installments, the gain from
the sale of the Product,  $1,951,000, was calculated by discounting the value of
the Stock  receivable  using a discount  rate of 15%. In 1995,  the Company also
recorded the  difference  between  95.85% of the discounted net present value of
the Stock to be received and the Company's indebtedness,  $1,131,744 at December
31, 1995, as a payable to the preferred stockholders of $738,289 to reduce their
liquidation preference. The present value of the amount payable to the preferred
stockholders,  including the accretion of interest  thereon,  was  $2,156,106 at
December 31, 1996, since all of the Company's indebtedness outstanding as of the
date of the sale of the Product was  satisfied  through  sources  other than the
Stock to be received.  The present value of the amount  payable to the preferred
stockholders,  including  accretion  of  interest  thereon,  was  $1,150,200  at
December 31, 1997.

The  discounted  net  present  value of the Stock  distributable  to the  Former
Officer as of the date of sale,  amounting  to $80,967,  was  allocated  between
common stock ($445) and severance  expense  ($80,522) based on the fair value of
the  Company's  common stock ($.004 per share).  The present value of the amount
payable to the Former Officer,  including the accretion of interest thereon, was
$49,800 at December 31, 1997.


                                      F-14
<PAGE>


                             AVAX Technologies, Inc.
                          (a development stage company)

                          Notes to Financial Statements

(Unaudited  with  respect to the three  months ended March 31, 1997 and 1998 and
     for the period from January 12, 1990 (incorporation) to March 31, 1998)


3.  License and Research Agreements

In  November  1995,  the  Company  entered  into an  agreement  with TJU for the
exclusive worldwide license to develop,  manufacture and sell the Invention.  In
consideration  for the license  agreement,  the Company paid cash of $10,000 and
issued an aggregate of 458,243  shares of common stock to TJU and the scientific
founder (the Scientist). These shares had antidilution rights prior to the first
equity financing,  as defined in the license agreement,  in excess of $1,000,000
by the Company.

Under  terms of the  license  agreement,  the  Company  was  required to raise a
minimum of $500,000 of net operating  capital by December  1996.  Also under the
terms of the  license  agreement,  (i) the Company is  obligated  to pay certain
milestone  payments as follows:  $10,000 upon  initiation of the first  clinical
trial that is approved by the Food and Drug  Administration  (FDA) or comparable
international  agency,  $10,000 upon the first filing of a New Drug  Application
(NDA) with the FDA or comparable  international agency, and $25,000 upon receipt
by the Company of approval  from the FDA or comparable  international  agency to
market products.  In addition,  the Company is obligated to pay royalties on its
worldwide net sales  revenue  derived from the Invention and a percentage of all
revenues received from sublicensees of the Invention.

The Company also entered into a research  agreement  with TJU to fund a study to
be  performed  by TJU for  the  development  of the  technology  related  to the
Invention  (the Study) at  approximately  $220,000 per annum for the first three
years. The Company, at its discretion,  may reduce the funding in the third year
to no less than $100,000.  Following the third year, the Company is obligated to
spend a minimum of $500,000 per year on the  development of the Invention  until
commercialized  in the United  States.  If following the third year, the Company
files for United States marketing  approval through a Company sponsored NDA, the
Company may elect to spend less than $500,000 per year on the development of the
Invention  during  the  period of time the NDA is under  review by the FDA.  The
research agreement will continue until completion of the Study, although TJU has
the right to terminate the  agreement on 30 days'  written  notice if it becomes
unable for any reason to complete the study.

In December  1996,  the Company  entered into an agreement  with Rutgers for the
exclusive worldwide license to develop,  manufacture and sell products embodying
the Compounds. In consideration for the license agreement, the Company paid cash
of  $15,000,  has  agreed to pay  $15,000 in each  subsequent  year as a license
maintenance  fee and has  committed  to the  issuance  of warrants to Rutgers to
purchase  125,000  shares of common stock at a price of $8.24 per share based on
the  achievement of certain  development  milestones.  The first 75,000 warrants
will 


                                      F-15
<PAGE>


                             AVAX Technologies, Inc.
                          (a development stage company)

                          Notes to Financial Statements

(Unaudited  with  respect to the three  months ended March 31, 1997 and 1998 and
     for the period from January 12, 1990 (incorporation) to March 31, 1998)


3. License and Research Agreements (continued)

expire in 2006,  and the  final  50,000  warrants  will  expire  in 2011.  These
warrants,   once  issued,   shall  provide  for  cashless  exercise,   piggyback
registration rights and certain  antidilution  rights. The Company has agreed to
fund research in the amount of one hundred thousand dollars  ($100,000) per year
for the next three  years.  In  addition,  the Company is  obligated to spend an
aggregate  of  $200,000  in the first  year,  $300,000  in the  second  year and
$500,000 each year thereafter until the first year of commercial  marketing of a
product  derived from the Compounds.  The license  maintenance  fee shall not be
payable in years where research funding is equal to or greater than $100,000.

Under the terms of the  license  agreement,  the  Company  is  obligated  to pay
certain  milestone  payments as  follows:  $15,000 on the earlier of October 31,
1999  or  the  date  of  first  filing  of an  Investigational  New  Drug  (IND)
application  with the FDA, or comparable  international  agency;  $25,000 on the
earlier of October 31, 2001 or the date of  initiation of Phase II trials in the
United States or another major market country; $45,000 on the earlier of October
31,  2005 or the date of first  filing of an NDA  application  with the FDA,  or
comparable international agency; and $150,000 on the earlier of October 31, 2008
or the date of receipt by the  Company of approval  from the FDA, or  comparable
international agency, to market products.

In  addition,  the Company is obligated to pay  royalties on its  worldwide  net
sales  revenue  derived  from the  Compounds  and a  percentage  of all revenues
received from sublicensees of products derived from the Compounds.  Such royalty
payments  shall  be no less  than  $100,000  in the  first  year  of  commercial
marketing,  $200,000 in the second year, $250,000 in the third year, $300,000 in
the fourth year, and $350,000 in the fifth and all following years.

In February 1997,  the Company  entered into an agreement with Texas A&M for the
exclusive worldwide license to develop,  manufacture and sell products embodying
the Texas A&M Compounds.  Under the terms of the license agreement,  the Company
has agreed to fund research in the amount of approximately $108,000 per year for
the next three years.  The Company is also  obligated  to pay certain  milestone
payments as follows:  $24,000 upon initiation of certain  toxicity  evaluations;
$12,000 upon completion of toxicity evaluations demonstrating certain acceptable
toxicity levels; $12,000 upon the submission of an IND to the FDA, or comparable
international  agency;  $5,000  upon  completion  of the first  Phase I clinical
investigation;  and $15,000 upon receipt by the Company of NDA approval from the
FDA to market products.


                                      F-16
<PAGE>


                             AVAX Technologies, Inc.
                          (a development stage company)

                          Notes to Financial Statements

(Unaudited  with  respect to the three  months ended March 31, 1997 and 1998 and
     for the period from January 12, 1990 (incorporation) to March 31, 1998)


3.  License and Research Agreements (continued)

In  addition,  the Company is obligated to pay  royalties on its  worldwide  net
sales  revenue  derived  from the  Compounds  and a  percentage  of all revenues
received from sublicensees of products derived from the Compounds.  Such royalty
payments  shall  be no  less  than  $50,000  in the  first  year  of  commercial
marketing,  $100,000 in the second  year and  $200,000 in the third year and all
following years.

4.  Equity Transactions

Common and Preferred Stock

Common stock issued for services since 1990 has been recorded based on the value
of the services provided.

In April  1995,  in  accordance  with the terms of his  resignation  and related
severance  arrangements,  the Former Officer  returned  111,330 shares of common
stock and options to purchase  62,500 shares of common  stock.  The common stock
returned was valued at $.004 per share.  The common  stock and options  returned
were canceled.

In May 1995,  in  accordance  with the terms of a  settlement  agreement  with a
former  officer and director of the Company,  the Company  agreed to release and
relinquish any claim it may have on certain intellectual property, excluding the
Product,  in exchange for 196,618 shares of the Company's  common stock owned by
her and her  family.  The  common  stock  was  valued at $.004 per share and was
canceled.

On September  13, 1995,  the Company  issued  402,490  shares of common stock to
officers of the Company at $.004 per share.

On November 20,  1995,  the Company  issued an  aggregate  of 458,243  shares of
common stock to TJU and the Scientist (see Note 3). In addition, on November 20,
1995,  the Company  issued,  in  aggregate,  an additional  916,485  shares to a
principal  stockholder,  a third party designated by the principal  stockholder,
and an officer, at $.004 per share.

On March 24,  1996,  the  Company  repurchased  77,901  shares  of common  stock
previously issued to an officer at $.004 per share. The repurchased  shares were
canceled.


                                      F-17
<PAGE>


                             AVAX Technologies, Inc.
                          (a development stage company)

                          Notes to Financial Statements

(Unaudited  with  respect to the three  months ended March 31, 1997 and 1998 and
     for the period from January 12, 1990 (incorporation) to March 31, 1998)


4. Equity Transactions (continued)

In May 1996, the Company's authorized capital was increased to 50,000,000 shares
of common  stock,  par value $.004,  and  5,000,000  shares (of which  2,500,000
shares  were  designated  as Series A preferred  stock and  300,000  shares were
designated as Series B preferred stock) of preferred stock, par value $.01.

Pursuant to a private placement in May and June 1996, the Company issued 258,198
shares of Series B convertible preferred stock. The preferred  stockholders also
received   129,099  shares  of  common  stock.  The  total   consideration   was
$25,819,800.  The per  share  price  allocated  to  common  stock  and  Series B
convertible preferred stock was $1 and $99, respectively. In connection with the
private placement, the Company paid $3,357,000 in commissions and nonaccountable
expenses  to the  placement  agent,  a related  party,  and issued 500 shares of
common  stock  and  1,000  shares of  Series B  convertible  preferred  stock as
consideration for legal services valued at $100,000. In addition,  the placement
agent  received  warrants to purchase  25,819.8  shares of Series B  convertible
preferred  stock at an  exercise  price of $110 per  share.  Such  warrants  are
exercisable until June 11, 2006, contain certain antidilution provisions and may
be  exercised  pursuant to a cashless  exercise  feature.  Other share  issuance
expenses amounted to $142,000.

The Series B preferred  stockholders are entitled to voting rights equivalent to
the number of common shares into which their preferred  shares are  convertible.
The Series B preferred  stockholders are also entitled to receive, in preference
to the holders of common stock,  an amount per preferred  share of $135 plus any
declared but unpaid dividends.

Pursuant to the terms of the private placement, each share of Series B preferred
stock was convertible at any time, in whole or in part, at the discretion of the
holders, into common stock at $4 per share (the Initial Conversion Price), which
amounted to 6,479,950 shares at December 31, 1996. Twelve months after the final
closing  date  (the  Reset  Date),  the  Company  could,  at its  option,  cause
conversion of the preferred stock, in whole or in part, into common stock at the
Initial  Conversion Price if the closing price of the common stock exceeded 150%
of  the  Initial   Conversion  Price  for  at  least  20  trading  days  in  any
30-consecutive-trading-day period.

At the second  closing of the private  placement on June 11, 1996, the 1,287,500
shares of Series A  preferred  stock  were  automatically  converted  to 321,875
shares of common stock. Notwithstanding such conversion, holders of the Series A
preferred stock have


                                      F-18
<PAGE>


                             AVAX Technologies, Inc.
                          (a development stage company)

                          Notes to Financial Statements

(Unaudited  with  respect to the three  months ended March 31, 1997 and 1998 and
     for the period from January 12, 1990 (incorporation) to March 31, 1998)


4.  Equity Transactions (continued)

received  pro rata 95.85% of shares of common stock of IPI  associated  with the
sale of the Product, as discussed in Note 2.

During  1997,  Series  B  preferred  stockholders  converted  55,039  shares  of
preferred  stock into 1,421,392  shares common stock at the conversion  price in
effect at the time. At December 31, 1997, the remaining 204,159 shares of Series
B  preferred  stock are  convertible  into  5,325,866  shares  of common  stock,
excluding the effect of any fractional shares.

Conversion Reset

In accordance with the terms of the placement,  the Initial Conversion Price was
to be adjusted and reset  effective as of the Reset Date if the average  closing
bid price for the 30 consecutive  trading days  immediately  preceding the Reset
Date (the 12-Month  Trading Price) was less than 135% of the Initial  Conversion
Price or $5.40.  If such was the case,  the  Initial  Conversion  Price would be
reduced to be equal to the greater of the 12-Month Trading Price divided by 1.35
or 50% of the Initial Conversion Price.

The Initial  Conversion Price was adjusted  effective June 11, 1997, because the
average  closing bid price of the common  stock for the 30  consecutive  trading
days  immediately  preceding such date was less than $5.40.  The average was, in
fact, $5.175 per share. Accordingly,  the conversion price was adjusted to $3.83
per share,  which  corresponds  to a new  conversion  rate of 26.0875  shares of
common stock per share of Series B preferred stock.

Staggered Lock-up

Pursuant to the terms of the  placement,  25% of each holder's  shares of common
stock issuable upon conversion of the Series B preferred  shares (the Conversion
Shares) were not subject to any restriction on resale  (Lock-up).  The remaining
75% of each  holder's  Conversion  Shares were  subject to a staggered  Lock-up,
whereby 25% of the Conversion  Shares were released from the Lock-up every three
months after the final closing, through and including March 11, 1997.

In March 1997,  the Company  completed a revision to the  staggered  Lock-up and
Conversion  Reset  provision  of  the  private  placement.  Shareholders  owning
approximately  94% of the Series B preferred  shares agreed to a modification of
the original  subscription  agreement,  such that the  staggered  Lock-up  would
expire  beginning  three months after both listing and  effectiveness  under the
Securities  Act of 1933 of the Company's  Registration  Statement for its common
stock 


                                      F-19
<PAGE>


                             AVAX Technologies, Inc.
                          (a development stage company)

                          Notes to Financial Statements

(Unaudited  with  respect to the three  months ended March 31, 1997 and 1998 and
     for the period from January 12, 1990 (incorporation) to March 31, 1998)


4. Equity Transactions (continued)

(Effectiveness).  As so modified, upon listing and Effectiveness, which occurred
on July 10, 1997, 25% of the  Conversion  Shares were not subject to any Lock-up
provisions.  The  remaining  75% of the  Conversion  Shares  were  subject  to a
staggered Lock-up,  such that every three months after July 10, 1997, 25% of the
Conversion Shares were released from Lock-up until April 10, 1998 at which point
all Conversion Shares were no longer subject to any Lock-up.

In addition, for those shareholders who accepted the Lock-up modifications,  the
Company agreed to provide additional reset protection,  extending the Reset Date
to 12 months following the later of Effectiveness and listing. The terms of this
modified  reset are the same as the original  reset  provision,  except that the
Company will not adjust the conversion  price, but will issue additional  shares
of common stock to effect the principles of the original reset provision.

Stock Options

In April 1992,  the Board of Directors  approved the 1992 Stock Option Plan (the
Plan),  which,  as amended,  authorizes up to 437,500 shares of common stock for
granting both incentive and nonqualified stock options to employees,  directors,
consultants  and members of the scientific  advisory  board of the Company.  The
exercise  price and vesting period of the options are determined by the Board of
Directors at the date of grant.  Options may be granted up to 10 years after the
Plan's adoption date and generally expire 10 years from the date of grant.

The following summarizes activity in the Plan:

                                                               Options
                                                              ----------
     Balance at December 31, 1994                              276,375
       Canceled                                               (246,375)
                                                              ----------
     Balance at December 31, 1995, 1996 and 1997                30,000
       Granted                                                  30,000
                                                              ==========
     Balance at March 31, 1998 (Unaudited)                      60,000
                                                              ==========

At December 31,  1997,  options to purchase  30,000  shares of common stock were
exercisable  stock at an  exercise  price of $1.20 per  share,  and  options  to
purchase  407,500  shares of common were  available for grant under the Plan. In
March 1998,  options to purchase  30,000  shares of common  stock at an exercise
price of $4.00 per share were  granted.  Such  options vest over three years and
are exercisable for a period of seven years.


                                      F-20
<PAGE>


                             AVAX Technologies, Inc.
                          (a development stage company)

                          Notes to Financial Statements

(Unaudited  with  respect to the three  months ended March 31, 1997 and 1998 and
     for the period from January 12, 1990 (incorporation) to March 31, 1998)


4.  Equity Transactions (continued)

Certain  officers and  employees  were also granted  stock  options in 1996,  as
authorized  by the Board of  Directors,  apart from the Plan.  In May 1996,  the
Company's President and Chief Executive Officer (the President) received options
to purchase 318,873 shares of common stock at $1.00 per share. Such options vest
at a rate of 1/16 per quarter over four years and are  exercisable  for a period
of seven years. Because the fair value of the Company's common stock at the date
of grant was  determined to be $2 per share,  the Company  recorded  $318,873 as
deferred  compensation.  Such deferred compensation is being amortized over four
years.

In September  1996,  certain  officers and an employee also received  options to
purchase 252,500 shares of common stock at $1.00 per share. Such options vest at
a rate of 1/16 per quarter over four years and are  exercisable  for a period of
seven years. Because the fair value of the Company's common stock at the date of
grant was  determined  to be $4 per share,  the  Company  recorded  $757,500  as
deferred  compensation.  Such deferred compensation is being amortized over four
years.

In March 1997,  one other employee of the Company  received  options to purchase
52,500  shares of common stock at $6.00 per share,  the closing  market price on
the date of grant. In July 1997, the Company  withdrew such options and replaced
them with options to purchase 90,000 shares of common stock at an exercise price
of $4.50,  the closing  market  price on the date of grant.  The options vest as
follows: 5,000 shares vest on September 1, 1997, 30,000 shares vest at a rate of
1/6 every six months over a three-year  period,  thereafter,  and the  remaining
55,000 shares will vest upon the occurrence of certain milestone events relating
to the  Company's  manufacturing  program.  Such options are  exercisable  for a
period of seven years.

In July 1997,  the  President,  certain  officers and an employee  also received
options to  purchase  280,000  shares of common  stock at $4.50 per  share.  The
President's options, which represent 150,000 of these options, vest at a rate of
1/12 per quarter over a three-year  period. The remaining options vest at a rate
of 1/16 per  quarter  over four  years and all are  exercisable  for a period of
seven years.

In July 1997, options were issued to a scientific  consultant to purchase 30,000
shares of common  stock at $4.50 per share.  Such  options vest at a rate of 1/3
per year over three years and are exercisable for a period of seven years.


                                      F-21
<PAGE>


                             AVAX Technologies, Inc.
                          (a development stage company)

                          Notes to Financial Statements

(Unaudited  with  respect to the three  months ended March 31, 1997 and 1998 and
     for the period from January 12, 1990 (incorporation) to March 31, 1998)


4.  Equity Transactions (continued)

In September 1997, four directors of the Company each received a grant of 40,000
options to purchase common stock at $4.50 per share. Such options vest at a rate
of 1/16 per quarter  over four years,  commencing  on December 1, 1997,  and are
exercisable for a period of seven years.

In December  1997,  four directors of the Company each received a grant of 5,161
options to purchase common stock at $3.88 per share. Such options vest at a rate
of 1/4 per  quarter  over  one  year,  commencing  on  March  1,  1998,  and are
exercisable for a period of seven years.

In March 1998, in  consideration  for  consulting  services,  the Company issued
options to purchase  50,000 shares of common stock , exercisable for seven years
at an exercise price of $4.00 per share. Such options vest at a rate of 1/12 per
month.

Warrants

In June, July and September 1992, the Company issued warrants to purchase 88,769
shares (adjusted to comply with antidilution  provisions of the warrants) of the
Company's  common stock at a price of $2.59.  These  warrants were  exercised in
April  and June 1997  under a  cashless  exercise  provision,  resulting  in the
issuance of 49,770 shares of common stock.

The  Company  has  issued  warrants  to  purchase  7,750  (May  1993) and 90,000
(January,  February and August 1995) shares of the  Company's  common stock at a
price of $11.00 and $.04 per share, respectively. These warrants are exercisable
at any time and expire in 1998 and 2006, respectively.

In January and February of 1996, the Company issued  warrants to purchase 97,500
shares of the Company's common stock at a price of $.04 per share. Such warrants
are exercisable at any time and expire in 2007.

In October 1996, the Company issued warrants to purchase 50,000 shares of common
stock at $6 per share,  25,000 of which were  subsequently  canceled in April of
1997 (see Note 7).  These  warrants  are  exercisable  at December  31, 1997 and
expire in 2001.

In December  1996, the Company  committed to the future  issuance of warrants to
purchase  125,000  shares of the Company's  common stock at a price of $8.24 per
share (see Note 3).


                                      F-22
<PAGE>


                             AVAX Technologies, Inc.
                          (a development stage company)

                          Notes to Financial Statements

(Unaudited  with  respect to the three  months ended March 31, 1997 and 1998 and
     for the period from January 12, 1990 (incorporation) to March 31, 1998)


4.  Equity Transactions (continued)

In June and July of 1996, warrants to purchase 156,250 shares of common stock at
$.04 per share were exercised.

In February 1997, the Company  issued  warrants to three outside  consultants to
purchase  a total of 25,500  shares of common  stock at $6.00 per  share.  These
warrants vested immediately upon issuance and expire in 2004.

In April 1997, the Company issued  warrants to purchase  50,000 shares of common
stock at $8.00 per share  (see Note 7).  Such  warrants  vest on  various  dates
through April 1998 and expire in July 2002.

In July 1997,  warrants were issued to a consultant to purchase 45,000 shares of
common stock at $4.50 per share.  Such warrants were to vest upon the occurrence
of  certain  milestones  and were  exercisable  for a period of five  years.  In
December 1997, these warrants were canceled and new warrants to purchase 115,000
shares of common  stock at $3.50 per share were issued to the  consultant.  Such
warrants vest upon the occurrence of certain  milestones and are exercisable for
a period of five years.

In December  1997,  warrants  were issued to a  consultant  to purchase  200,000
shares  of  common  stock  at $3.75  per  share.  Such  warrants  vest  upon the
achievement of certain  performance-based  milestones and are  exercisable for a
period of five years.

Authorized  but unissued  shares of common  stock were  reserved for issuance at
December 31, 1997 and March 31, 1998 as follows:


                                                December 31        March 31,
                                                  1997               1998
                                         ---------------------------------------
                                                                  (Unaudited)
Series B convertible preferred                  5,325,866          5,040,027
   stock (Note 4)
Stock option plan                                 437,500            437,500
Non Plan options                                1,152,016          1,202,016
Warrants to purchase common stock                 579,500            579,500
Warrants to purchase Series B
   convertible preferred stock                    673,564            673,564
   (Note 4)
                                         =======================================
                                                8,168,446          7,932,607
                                         =======================================


                                      F-23
<PAGE>


                             AVAX Technologies, Inc.
                          (a development stage company)

                          Notes to Financial Statements

(Unaudited  with  respect to the three  months ended March 31, 1997 and 1998 and
     for the period from January 12, 1990 (incorporation) to March 31, 1998)


4.  Equity Transactions (continued)

SFAS No. 123 Disclosures

Pro forma  information  regarding net loss and net loss per share is required by
SFAS No. 123 and has been  determined  as if the Company had  accounted  for its
applicable  stock  options  and  warrants  under  the fair  value  method of the
statement.

The fair value for these options and warrants was estimated at the date of grant
using a Black-Scholes  option pricing model with the following  weighted-average
assumptions  for 1997 and 1996,  including a risk free interest rate of 5.50%, a
volatility  factor of the expected market price of the Company's common stock of
 .392 and a weighted-average expected life of the option or warrant of 44 months.

This model was developed for use in estimating  the fair value of traded options
which have no vesting  restrictions  and are fully  transferable.  In  addition,
option  valuation  models  require the input of highly  subjective  assumptions,
including  the expected  stock price  volatility.  Because the  Company's  stock
options and warrants have characteristics  significantly different from those of
traded  options and because  changes in the  subjective  input  assumptions  can
materially affect the fair value estimate, in management's opinion, the existing
models do not necessarily provide a reliable single measure of the fair value of
its employee stock options or warrants.

For purposes of pro forma  disclosures,  the estimated fair value of the options
is amortized to expense over the option or warrant vesting  period.  The effects
of  applying  SFAS  No.  123 for pro  forma  disclosures  are not  likely  to be
representative of the effects on reported net income or losses for future years.
The Company's pro forma information follows:

                                                         1997            1996
                                                    ----------------------------
     Pro forma net loss attributable to common
        stockholders                                $(2,707,135)    $(4,392,301)

     Pro forma net loss per share                          (.85)          (1.17)

A  summary  of  applicable   stock  option  and  warrant  activity  and  related
information for the years ended December 31, 1996 and 1997 is as follows:


                                      F-24
<PAGE>



                             AVAX Technologies, Inc.
                          (a development stage company)

                          Notes to Financial Statements

(Unaudited  with  respect to the three  months ended March 31, 1997 and 1998 and
     for the period from January 12, 1990 (incorporation) to March 31, 1998)


4.  Equity Transactions (continued)

                                        1996                       1996         
                               ----------------------     ----------------------
                                            Weighted-                  Weighted-
                                            Average                    Average  
                               Options and  Exercise      Options and  Exercise 
                                Warrants      Price        Warrants      Price  
                               ----------------------     ----------------------
Outstanding at beginning of                                  
   year                          203,362     $1.74        1,549,636     $3.21
Granted                        1,502,524      3.08          999,213      4.43
Exercised                        156,250      0.04           88,769      2.59
Forfeited                             --        --           25,000      6.00
                               ---------                  --------- 
Outstanding at end of year     1,549,636      3.21        2,435,080      3.70
                               =========                  ========= 
                                                                      
Exercisable at end of year       862,168     $3.83        1,104,047     $3.82
                               =========                  ========= 
                                                                         
The weighted-average  fair value of options and warrants granted during 1996 and
1997 was $1.41 and $1.39, respectively. Exercise prices for options and warrants
outstanding range from $.04 to $11.00.

5. Accounts Payable and Accrued Liabilities

Accounts payable and accrued liabilities consist of the following:

                                                 December 31,      March 31,
                                                    1997             1998
                                                 ---------------------------
                                                                  (Unaudited)
Professional fees                                $104,750          $239,275
Other                                             248,976           140,821
                                                 ---------------------------
                                                 $353,726          $380,096
                                                 ===========================
                                                             

                                      F-25
<PAGE>


                             AVAX Technologies, Inc.
                          (a development stage company)

                          Notes to Financial Statements

(Unaudited  with  respect to the three  months ended March 31, 1997 and 1998 and
     for the period from January 12, 1990 (incorporation) to March 31, 1998)


6. Income Taxes

At December  31,  1997,  the Company has net  operating  loss  carryforwards  of
approximately  $8,000,000 for federal income tax purposes that expire in varying
amounts through the year 2012 if not utilized.

Deferred  income  taxes  reflect  the net tax effects of  temporary  differences
between the carrying  amounts of assets and liabilities for financial  reporting
purposes and the amounts used for income tax purposes. Significant components of
the  Company's  deferred  tax  assets and  liabilities  for  federal  income tax
purposes are as follows:

                                                    December 31,      March 31,
                                                        1997            1998
                                                   ----------------------------
                                                                    (Unaudited)
Deferred tax assets:
   Net operating losses                            $ 3,094,000      $ 3,246,000
   Deferred compensation                               147,000          173,000
   Other                                                19,000           19,000
                                                   ----------------------------
Total deferred tax assets                            3,260,000        3,438,000

Deferred tax liabilities:
   Gain on sale of the Product treated as
     an installment sale for income tax               (377,000)              --
     purposes
                                                   ----------------------------
                                                     2,883,000        3,438,000

Valuation allowance                                 (2,883,000)      (3,438,000)
                                                   ----------------------------
Net deferred tax assets                            $        --      $        --
                                                   ============================

The valuation allowance at December 31, 1996 was $1,234,000.

Under  Section 382 of the Tax Reform Act of 1986,  the  Company's  net operating
loss  carryforward  could be  subject  to an annual  limitation  if it should be
determined  that a change  in  ownership  of more  than 50% of the  value of the
Company's stock occurred over a three-year period.


                                      F-26
<PAGE>


                             AVAX Technologies, Inc.
                          (a development stage company)

                          Notes to Financial Statements

(Unaudited  with  respect to the three  months ended March 31, 1997 and 1998 and
     for the period from January 12, 1990 (incorporation) to March 31, 1998)


6. Income Taxes (continued)

The following  summary  reconciles  the federal  statutory  rate with the actual
income tax provision (benefit):

<TABLE>
<CAPTION>
                                      December 31,                   March 31,
                                  1996           1997           1997           1998
                             ---------------------------------------------------------
                                                            (Unaudited)    (Unaudited)
<S>                          <C>            <C>            <C>            <C>         
Income taxes (benefit) at    $  (522,000)   $(1,450,000)   $  (327,000)   $  (476,000)
   statutory rate
State income taxes, net of       (71,000)      (197,000)       (44,000)       (65,000)
   federal benefit
Change in the valuation          587,000      1,649,000        371,000        555,000
   allowance
Other                              6,000         (2,000)            --        (14,000)
                             ---------------------------------------------------------
Provision for income taxes
   (benefit)                 $        --    $        --    $        --    $        --
                             =========================================================
</TABLE>

7. Commitments

Leases

In  August  1996,  the  Company  entered  into a  three-year  lease  for  office
facilities.   The  lease   commenced  in  October  with  a  monthly   rental  of
approximately  $5,400,  beginning in the fourth month. This lease was amended in
December 1997 to add  additional  office space for the remainder of the original
lease term which  increased the monthly  rental by  approximately  $2,700.  This
lease is secured by an irrevocable  standby letter of credit of which the lessor
is the named  beneficiary.  This $107,000 letter of credit expires at the end of
the  original  lease term and is  automatically  reduced by an equal amount each
year.

In December  1997,  the  Company  entered  into a 10-year  lease  agreement  for
manufacturing  facility  space which  commences in February 1998 and contains an
option to  terminate  after five  years.  The  monthly  rental is  approximately
$10,400. The first month's rent was payable upon signing of the lease along with
a security deposit equivalent to two months rental. The first five months rental
will be  rebated  at the end of the fifth  month.  This  lease is  secured  by a
one-year  irrevocable  standby letter of credit of which the lessor is the named
beneficiary.  This $379,530 letter of credit  automatically renews each December
and will be reduced by the amortized  reduction of the landlord  investment each
year.


                                      F-27
<PAGE>


                             AVAX Technologies, Inc.
                          (a development stage company)

                          Notes to Financial Statements

(Unaudited  with  respect to the three  months ended March 31, 1997 and 1998 and
     for the period from January 12, 1990 (incorporation) to March 31, 1998)


7. Commitments (continued)

Rent expense under these agreements was approximately $79,000 for the year ended
December 31, 1997.

Future minimum lease payments consisted of the following at December 31, 1997:

                        Year ending
                        December 31
                        -----------
                            1998           $210,847
                            1999            196,908
                            2000            124,071
                            2001            140,318
                            2002            377,852
                                    
Employment and Consulting Agreements

In May 1996,  the Company  entered into a letter  agreement  with the  President
pursuant to which the  President  will receive an annual  salary of $200,000,  a
minimum annual bonus of $25,000 and an additional  discretionary  bonus of up to
$175,000.  The President was also granted  options to purchase common stock (see
Note 4). In October  1997,  such annual  salary was  increased to $225,000 and a
$100,000 bonus was paid.

Effective in June 1996, the Company entered into consulting  agreements with the
Scientist,  a director and a former officer. These agreements are for an initial
term of three years through June 1999.  Annual  consulting fees payable pursuant
to these agreements approximate $66,000.

In September  1996, the Company  entered into letter  agreements  with its Chief
Financial  Officer (the CFO) and Executive Vice  President (the Executive  V.P.)
pursuant to which these  officers will receive  annual  salaries of $150,000 and
$145,000,  respectively,  minimum  annual bonuses of $25,000 each and additional
discretionary  bonuses  of up  to  $125,000  and  $83,750,  respectively.  These
officers  were also  granted  options to purchase  common stock (see Note 4). In
October 1997, these officers  received salary  increases  bringing each of their
annual salaries to $168,000 and were each paid a $50,000 bonus.


                                      F-28
<PAGE>


                             AVAX Technologies, Inc.
                          (a development stage company)

                          Notes to Financial Statements

(Unaudited  with  respect to the three  months ended March 31, 1997 and 1998 and
     for the period from January 12, 1990 (incorporation) to March 31, 1998)


7. Commitments (continued)

In October 1996, the Company entered into an agreement with an investment banker
pursuant to which the investment banker may, at the Company's  request,  perform
certain  investment  banking  services for the Company.  In connection with this
agreement,  the investment banker was granted warrants to purchase 50,000 shares
of common stock at $6 per share,  25,000 of which were subsequently  canceled in
April 1997 (see Note 4).

In April 1997,  the Company  entered into an agreement  with another  investment
banker  pursuant to which the investment  banker may, at the Company's  request,
perform certain investment banking services for the Company.  In connection with
this agreement,  the investment  banker was granted  warrants to purchase 50,000
shares of common stock at $8 per share (see Note 4).

In April,  May and July 1997,  the Company  entered  into  agreements  with four
members of the Scientific Advisory Board. These agreements are for initial terms
of two years and  require  compensation  of $2,000 per person per meeting of the
Scientific  Advisory  Board. In July 1997, the Company entered into a consulting
agreement with a member of its Scientific  Advisory  Board.  In connection  with
this  agreement,  the Company granted options to acquire 30,000 shares of common
stock at $4.50 per share (see Note 4).

8. Loans Payable and Related-Party Transactions

On March 1, 1994,  the Company  entered into a line of credit  agreement  with a
major  stockholder.  During  1994,  the  Company  received  $397,000  and repaid
$190,000. There were no borrowings or repayments under the line of credit during
1995.  Borrowings under this line of credit amounted to $207,000 at December 31,
1995,  bore interest at 2% above the prime rate (10.5% at December 31, 1995) and
were repaid in full in June 1996.

On November  16,  1994,  the Company  entered  into a term loan with a financial
institution and borrowed $389,000.  The outstanding balance at December 31, 1995
was $50,000.  The above major  stockholder had assigned certain bank deposits as
collateral for this borrowing. This borrowing, which bore interest at the prime,
was repaid in June 1996.


                                      F-29
<PAGE>


                             AVAX Technologies, Inc.
                          (a development stage company)

                          Notes to Financial Statements

(Unaudited  with  respect to the three  months ended March 31, 1997 and 1998 and
     for the period from January 12, 1990 (incorporation) to March 31, 1998)


8. Loans Payable and Related-Party Transactions (continued)

In 1995,  the Company  obtained eight  separate  bridge loans totaling  $600,000
($150,000 of which was obtained  from  related  parties).  The lenders also were
granted warrants to purchase 75,000 shares of common stock at $.04 per share. In
connection with these loans, the Company paid  commissions  totaling $54,000 and
issued  warrants to purchase  15,000 shares of common stock at $.04 per share to
the placement agent (the Placement  Agent),  a related party.  The warrants were
considered  to have a de minimis  value.  These  loans bore  interest at 13% per
annum and were  payable in 12 months.  Loans  totaling  $200,000  were repaid in
January  and  February of 1996,  and loans  totaling  $250,000  that were due in
February 1996 were rolled over for another year through February 1997.  Warrants
to  purchase  31,250  shares of common  stock at $.04 per share were  granted in
connection  with the rollover of these  loans.  All bridge loans were payable in
full upon the closing of an initial public offering or private  placement of the
Company's stock, with gross proceeds in excess of $2,500,000.

In addition,  in January and February of 1996, the Company  obtained  additional
bridge loans  totaling  $400,000  ($300,000  of which was obtained  from related
parties) with interest payable at 13% per annum and issued  additional  warrants
to purchase 50,000 shares of common stock at $.04 per share. Also, in connection
with these  additional  bridge  loans,  the Company  paid  commissions  totaling
$36,000 and issued  warrants to purchase  16,250  shares of common stock at $.04
per share to the Placement  Agent, a related party. All bridge loans were repaid
in June 1996.

On June 11, 1996, the Company entered into a financial  advisory  agreement with
the Placement  Agent,  pursuant to which the Company will pay a monthly retainer
of $4,000 for a minimum of 24 months, plus expenses and success fees.

9. Employee Benefit Plan

During 1996,  the Company  established a 401(k) plan for all employees  over the
age of 21. Employee contributions are subject to normal 401(k) plan limitations,
and the Company has made no matching  contributions in 1996 or 1997,  although a
top heavy contribution of approximately $4,000 was made in early 1998.



                                      F-30

<PAGE>

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

     No dealer,  salesman  or any other  person has been --  authorized  to give
information or to make any representations not contained in this Prospectus and,
if given or made, such -- information or representations must not be relied upon
as having been authorized by the Company. This Prospectus does not constitute an
offer of any  securities  other  than  those to which it  relates or an offer to
sell, or a solicitation of an offer to sell or a solicitation of an offer to buy
any of the securities  offered hereby to any person in any jurisdiction in which
such an offer or  solicitation  would be unlawful.  Neither the delivery of this
Prospectus nor any sales made hereunder shall, under any  circumstances,  create
any implication that the information  contained herein is correct as of any time
subsequent to the date hereof.


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


                                TABLE OF CONTENTS

AVAILABLE INFORMATION..........................................................2
                                                                              
PROSPECTUS SUMMARY.............................................................3
                                                                              
COMPANY SUMMARY................................................................3
                                                                              
OFFERING SUMMARY...............................................................5
                                                                              
SUMMARY OF FINANCIAL DATA......................................................6
                                                                              
RISK FACTORS...................................................................7
                                                                              
USE OF PROCEEDS...............................................................21
                                                                              
MARKET FOR COMMON EQUITY 
AND RELATED STOCKHOLDER MATTERS...............................................21
                                                                              
DIVIDEND POLICY...............................................................21
                                                                              
CAPITALIZATION................................................................22
                                                                              
MANAGEMENT'S DISCUSSION AND ANALYSIS OF                                       
FINANCIAL CONDITION AND PLAN OF OPERATIONS....................................23
                                                                              
BUSINESS......................................................................26
                                                                              
MANAGEMENT....................................................................38
                                                                              
CERTAIN TRANSACTIONS..........................................................45
                                                                              
PRINCIPAL STOCKHOLDERS........................................................47
                                                                              
DESCRIPTION OF SECURITIES.....................................................49
                                                                              
SELLING SECURITYHOLDERS.......................................................56

SHARES ELIGIBLE FOR FUTURE  SALES.............................................62
                                                                              
PLAN OF DISTRIBUTION..........................................................63
                                                                              
EXPERTS.......................................................................64
                                                                              
LEGAL COUNSEL.................................................................64
                                                          
================================================================================

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


                                   ----------


                            AVAX TECHNOLOGIES, INC.


                                  Common Stock




                                   ----------

                                   PROSPECTUS
                                       , 1998

                                   ----------











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

<PAGE>

                                     PART II
                     INFORMATION NOT REQUIRED IN PROSPECTUS

Item 24.  Indemnification of Directors and Officers

   
Section 145 of the Delaware General Corporation Law ("Section 145") authorizes a
court to award or a corporation's Board of Directors to grant indemnification to
directors   and   officers   in  terms   sufficiently   broad  to  permit   such
indemnification   under  certain   circumstances   for  liabilities   (including
reimbursement  for expenses  incurred) arising under the Securities Act of 1933,
as  amended  (the  "Act").   Article  Seven  of  the  Company's  Certificate  of
Incorporation  provides that the Company shall indemnify and advance expenses to
its directors  ands officers to the fullest  extent  permitted by Section 145 of
the Delaware General Corporation Law. Article Nine of the Company's  Certificate
of  Incorporation  provides that the liability of its directors is eliminated to
the fullest  extent  permitted  by Section  102(b)(7)  of the  Delaware  General
Corporation  Law.  Article V, Section 1 of the  Company's  By-Laws  provides for
mandatory  indemnification  of its directors to the fullest extent authorized by
the Delaware  General  Corporation  Law.  Article V, Section 2 of the  Company's
By-Laws  provides for  prepayment  of expenses  incurred by its directors to the
fullest extent  permitted by, and only in compliance  with, the Delaware General
Corporate  Law.  Article V,  Section 6 of the  Company's  By-Laws  provides  for
permissive  indemnification of its officers,  employees and agents if and to the
extent  authorized  by the Board of  Directors in  compliance  with the Delaware
General  Corporation  Law. These  provisions in the Certificate of Incorporation
and  the  By-Laws  do  not  eliminate  the  directors'  fiduciary  duty,  and in
appropriate  circumstances  equitable remedies such as injunctive or other forms
of  non-monetary  relief will remain  available under Delaware law. In addition,
each  director  will  continue  to be  subject  to  liability  for breach of the
director's  duty of loyalty to the  Company  for acts or  omissions  not in good
faith or involving  intentional  misconduct,  for knowing violations of law, for
actions leading to improper personal benefit to the director, and for payment of
dividends  or approval of stock  repurchases  or  redemptions  that are unlawful
under   Delaware   law.  The   provisions   also  do  not  affect  a  director's
responsibilities  under any other law,  such as the federal  securities  laws or
state or federal environmental laws. In addition,  there are certain contractual
indemnification  provisions  contained  in the  Subscription  Agreements  of the
Series B Offering  (Exhibit  4.5) and the Series B Placement  Warrants  (Exhibit
4.6)  indemnifying  against  certain  liabilities  the  Company,  its  officers,
directors,  affiliates and/or controlling person,  including,  in certain cases,
Paramount Capital, Inc., a company wholly owned by a substantial  shareholder of
the Company,  Lindsay A. Rosenwald,  M.D. In addition,  the Company has obtained
certain liability insurance coverage for its directors and officers.
    



                                      II-1

<PAGE>

Item 25.  Other Expenses of Issuance and Distribution

The following table sets forth the costs and expenses,  other than  underwriting
discounts and commissions, payable by the Company in connection with the sale of
securities  being  registered.  The following  table includes costs and expenses
relating to securities being  registered for resale by certain  securityholders,
all which amounts will be paid by the Company.  All amounts are estimates except
the SEC registration fee and the Nasdaq filing fees.

SEC Registration fee                                                  $15,398.36
Nasdaq filing fee                                                      10,000.00
NASD Corporate Financing Rule filing fee                                4,966.00
Printing and engraving                                                100,000.00
Legal fees and expenses of the Company                                350,000.00
Accounting fees and expenses                                           60,000.00
Blue sky fees and expenses                                             20,000.00
Transfer agent fees and expenses                                       20,000.00
Miscellaneous                                                          39,635.64
                                                                     -----------
           Total                                                     $620,000.00
                                                                     -----------

Item 26.  Recent Sales of Unregistered Securities

In the last  three  years,  the  Company  has  issued  and  sold  the  following
securities (as adjusted to reflect  two-for one reverse stock splits effected on
March 26, 1996 and May 13, 1997):

1.   On May 11,  1996 and June 11,  1996  (the  "Closing  Dates"),  the  Company
     consummated  a private  placement of an aggregate  amount of  approximately
     $25,800,000  of shares  ("Units")  of Series B  Preferred  Stock and Common
     Stock (the  "Series B  Offering").  The  issuance  of the above  referenced
     securities  was  deemed to be  exempt  from  registration  under the Act in
     reliance on Section 4(2) thereof and Rule 506 of  Regulation D  promulgated
     thereunder.

     The offer and sale of Units were conducted through the Company's  Placement
     Agent (as  defined  below).  In offering  the Units,  the  Placement  Agent
     confined its actions to  activities  sanctioned by Regulation D and did not
     engage  in any form of  general  advertising  or  general  solicitation  in
     offering the Units.  All investors of the Units  represented to the Company
     that they were  accredited  investors  and the Company  believed  that such
     investors were accredited investors.  The Closing Dates were the only dates
     that the Company  sold Units,  and the  Company  timely  filed a Form D (or
     amended Form D, as the case may be) on each of the Closing  Dates.  Each of
     the  purchasers of the Units  represented  their  intentions to acquire the
     securities  for  investment  only and not  with a view  to,  or for sale in
     connection  with, any  distribution  thereof and  appropriate  legends were
     affixed  to  the  share  certificates  issued  in  such  transactions.  The
     purchasers in such  offering of Units were all the Selling  Securityholders
     listed  as  such  in  the  Registration   Statement  except  for  James  D.
     Wolfensohn,  Seymour  Buehler and William J. Vanden Heuvel who are included
     in the list of selling Shareholders because of their ownership of shares of
     Common  Stock  issued upon  exercise of Bridge  Placements  Warrants  being
     registered hereby, and, employees of Paramount that are not included in the
     Registration  Statement  notwithstanding  their  purchase  of  units in the
     Series B Offering.

2.   In  connection  with  services  rendered by  Paramount  Capital,  Inc.,  as
     placement agent in the offering (the "Placement Agent"), the Company issued
     to the Placement  Agent or its designees  warrants to purchase an aggregate
     of approximately 25,820 shares of Series B Preferred Stock. The issuance of
     the above referenced  securities was deemed to be exempt from  registration
     under  the  Act in  reliance  on  Section  4(2)  thereof  and  Rule  506 of
     Regulation  D  promulgated  thereunder.  Each  of such  recipients  had the
     sophistication,  knowledge  and  experience  in financial  matters as to be
     capable  of  evaluating  the  merits  and  risks of its  investment  in the
     Company,  and had access to information,  and the opportunity  prior to its
     investment to ask questions of and receive answers from  representatives of
     the Company, in each case concerning the finances,  operations and



                                      II-2

<PAGE>

     business of the Company. In addition,  the recipients of securities in each
     such transaction represented their intentions to acquire the securities for
     investment  only and not with a view to or for sale in connection  with any
     distribution   thereof  and   appropriate   legends  were  affixed  to  the
     certificates issued in such transactions.

3.   On November 20, 1995,  the Company  entered into a License  Agreement  (the
     "TJU License Agreement') with Thomas Jefferson  University ("TJU") pursuant
     to which TJU licensed to the Company certain patent and patent applications
     relating to a process for the  modification  of a patient's own tumor cells
     into a cancer  vaccine  (the "TJU  License").  Pursuant  to the TJU License
     Agreement,  the Company issued  229,121.5 shares of Common Stock to each of
     TJU and Dr.  David Berd,  TJU's chief  oncologist  and the  inventor of its
     cancer  vaccine.  In  the  stock  subscription  agreements   ("Subscription
     Agreements")  entered into by the Company, TJU and Dr. Berd on November 20,
     1995, relating to the issuance of Common Stock to each of TJU and Dr. Berd,
     each of TJU and Dr. Berd  represented,  among other things, to the Company,
     and the Company  believed,  the following:  that (i) it acquired the Common
     Stock for  investment  purposes  only and not for resale for an  indefinite
     period  of time  for  its own  account;  (ii) it had  such  sophistication,
     knowledge and experience in financial and business matters as to be capable
     of evaluating the merits and risks of its investment in the Company;  (iii)
     it had the  ability to bear the  economic  risks of its  investment  for an
     indefinite  period  of  time  and  could  afford  a  complete  loss  of its
     investment;  and (iv) it had  access to  information,  and the  opportunity
     prior to its purchase of the Common  Stock to ask  questions of and receive
     answers from  representatives  of the Company,  in each case concerning the
     finances,  operations  and business of the Company.  Also, as stated in the
     Subscription  Agreements,  the share certificates issued in connection with
     the above issuance of Common Stock had endorsed  thereon legends  regarding
     restrictions  on the transfer of the Common Stock.  Because of, among other
     things, the foregoing, the issuances of the above referenced securities was
     deemed to be exempt from registration  under the Act in reliance on Section
     4(2) thereof.

4.   The Castle Group, LLC ("The Castle Group") which may be deemed an affiliate
     of both the Company and the Placement  Agent,  identified,  negotiated  and
     acquired  for the Company the TJU License.  In  connection  therewith,  The
     Castle Group and/or its designees were granted 916,485.5 of Common Stock of
     the  Company  at a price of $.004 per share  pursuant  to an  Engagement  &
     Technology  Acquisition Agreement dated October 20, 1995 between The Castle
     Group  and the  Company.  In the  stock  subscription  agreements  ("Castle
     Subscription Agreements") entered into by the Company, The Castle Group and
     its designees in September,  1995,  relating to the Common Shares issued to
     each of The Castle Group and its designees, each of them represented, among
     other things, to the Company, and the Company believed, the following: that
     (i) it acquired the Common Stock for  investment  purposes only and not for
     resale for an indefinite period of time for its own account; (ii) that each
     of The Castle Group and its  designees had such  sophistication,  knowledge
     and  experience  in  financial  and  business  matters  as to be capable of
     evaluating the merits and risks of its investment in the Company;  (iii) it
     had the  ability  to bear  the  economic  risks  of its  investment  for an
     indefinite  period  of  time  and  could  afford  a  complete  loss  of its
     investment;  and (iv) it had  access to  information,  and the  opportunity
     prior to its purchase of the Common  Stock to ask  questions of and receive
     answers from  representatives  of the Company,  in each case concerning the
     finances,  operations  and business of the Company.  Also, as stated in the
     Subscription  Agreements,  the share certificates issued in connection with
     the above issuance of Common Stock had endorsed  thereon legends  regarding
     restrictions on the transfer of the Common Stock. Because of the foregoing,
     the issuances of the above  referenced  securities were deemed to be exempt
     from registration under the Act in reliance on Section 4(2) thereof because
     such issuances did not involve a public offering. In addition,  each of the
     recipients of securities in such transaction represented their intention to
     acquire the securities  for  investment  only and not with a view to or for
     sale in connection with any distribution thereof and conform to appropriate
     legends were affixed to the share certificates issued in such transactions.
     All recipients had adequate access,  through their  relationships  with the
     Company, to information about the Company.

5.   In 1995 and  1996,  the  Company,  pursuant  to  certain  bridge  financing
     transactions  issued to nine persons or entities namely, The Aries Domestic
     Fund, L.P., The Aries Fund, A Cayman Island Trust,  Seymour Buehler,  Yonah
     J. Hamlet, M.D., Trustee FBO Yonah J. Hamlet, M.D. Profit Sharing Plan Dtd.
     1/1/86,  South Ferry #2, L.P.,  Herman Tauber,  Myron M. Teitelbaum,  M.D.,
     William J. Vanden Heuvel and James D. Wolfensohn ("Warrant  Holders"),  (i)
     bridge  notes  aggregating  $1,000,000  and (ii)  warrants  to  purchase an
     aggregate of 156,250  shares of Common 



                                      II-3

<PAGE>

     Stock at an exercise  price of $.004 per share.  In June 1996,  such bridge
     notes were paid by the Company and all the warrants  were  exercised by the
     holders  thereof.  In connection  with  services  rendered as the placement
     agent of the bridge financing,  Paramount Capital,  Inc.  ("Paramount") was
     issued  warrants to purchase  31,250  shares of Common Stock at an exercise
     price of $.004 per share.  In connection with the issuances of the Warrants
     and the  Placement  Warrants,  each of the Warrant  Holders  and  Paramount
     represented,  and the Company believed,  among other things, the following:
     that (i) it  acquired  the  Common  Stock for  investment  only and not for
     resale  for an  indefinite  period  for its own  account;  (ii) it had such
     sophistication,  knowledge and experience in financial and business matters
     as to be capable of  evaluating  the merits and risks of its  investment in
     the  Company;  (iii) it had the ability to bear the  economic  risks of its
     investment  for an  indefinite  period of time and could  afford a complete
     loss of its  investment;  and (iv) it had  access to  information,  and the
     opportunity  prior to its purchase of the Common Stock to ask  questions of
     and receive  answers  from  representatives  of the  Company,  in each case
     concerning the finances,  operations and business of the Company.  Also, as
     stated in the Subscription  Agreements,  the share  certificates  issued in
     connection  with the above  issuances of Common Stock had endorsed  thereon
     legends  regarding  restrictions  on the transfer of the Common Stock.  The
     issuances of the above referenced  securities were deemed to be exempt from
     registration under the Act in reliance on Section 4(2) thereof because such
     issuances did not involve a public offering.

6.   On October 24,  1996,  the Company  entered  into an  agreement  with M. H.
     Meyerson & Co., Inc.  ("Meyerson"),  pursuant to which  Meyerson  performed
     certain   investment   banking  and  financial   advisory   services  on  a
     non-exclusive  basis for the  Company  (the  "Meyerson  Investment  Banking
     Agreement").  Pursuant to the Meyerson Investment Banking Agreement,  which
     was terminated by the Company on April 17, 1997, Meyerson acquired warrants
     to purchase an aggregate of 50,000 shares of Common Stock of the Company at
     an  exercise  price  of  $6.00  per  share.  At the  time of the  Company's
     termination,  25,000 of the Meyerson  Warrants had vested.  The issuance of
     the Meyerson Warrants was deemed to be exempt from  registration  under the
     Act in reliance on Section  4(2)  thereof  because  such  issuance  did not
     involve a public offering. In addition,  Meyerson represented its intention
     to acquire the securities for investment only and not with a view to or for
     sale in connection with any  distribution  thereof and appropriate  legends
     are  required  to be affixed to the warrant  certificates  issuable in such
     transactions.  Meyerson had adequate access,  through its negotiations with
     the  Company  of  the  terms  of  the  Investment  Banking  Agreement,   to
     information about the Company.

7.   On December 10, 1996,  the Company  entered into a license  agreement  with
     Rutgers,  the State University of New Jersey and the University of Medicine
     and  Dentistry of New Jersey  (collectively,  "Rutgers")  pursuant to which
     Rutgers licensed to the Company certain patent  applications  relating to a
     series of compounds  for the potential  treatment of cancer and  infectious
     diseases  (the "Rutgers  License").  Pursuant to the Rutgers  License,  the
     Company  issued  warrants to purchase  125,000  shares of Common Stock at a
     price of $8.24 per share to Rutgers (the "Rutgers Warrants").  The issuance
     of the Rutgers Warrants was deemed to be exempt from registration under the
     Act in reliance on Section  4(2)  thereof  because  such  issuance  did not
     involve a public offering.  In addition,  Rutgers represented its intention
     to acquire the securities for investment only and not with a view to or for
     sale in connection with any  distribution  thereof and appropriate  legends
     are  required  to be affixed  to the  warrant  certificates  issued in such
     transactions.  Rutgers had adequate access,  through its negotiations  with
     the Company of the terms of the Rutgers License,  to information  about the
     Company.

8.   In  consideration  of  services  rendered  on  behalf  of  the  Company  in
     connection with the acquisition and negotiation of the Rutgers License,  in
     February  1997,  the  Company  agreed to pay Samuel P.  Wertheimer,  Ph.D.,
     $25,000 and to issue to Dr. Wertheimer warrants to purchase 6,375 shares of
     Common Stock at an exercise price of $6.00 per share, exercisable for seven
     years (the "Wertheimer Warrants").  The issuance of the Wertheimer Warrants
     was deemed to be exempt  from  registration  under the Act in  reliance  on
     Section  4(2)  thereof  because  such  issuance  did not  involve  a public
     offering. In addition,  Dr. Wertheimer represented his intention to acquire
     the securities  for  investment  only and not with a view to or for sale in
     connection  with any  distribution  thereof  and  appropriate  legends  are
     required  to  be  affixed  to  the  warrant  certificates  issued  in  such
     transactions.  Dr. Wertheimer had adequate access, through his negotiations
     with the Company of the terms of the Rutgers License,  to information about
     the Company.  Moreover,  Dr. Wertheimer  represented to the Company that he
     was sophisticated and expert in financial matters.



                                      II-4

<PAGE>

9.   In  consideration  of  services  rendered  on  behalf  of  the  Company  in
     connection with the acquisition and negotiation of the Rutgers License,  in
     February 1997, the Company agreed to pay Carl Spana, Ph.D.,  $15,000 and to
     issue to Dr. Spana  warrants to purchase 6,375 shares of Common Stock at an
     exercise price of $6.00 per share,  exercisable for seven years (the "Spana
     Warrants"). The issuance of the Spana Warrants was deemed to be exempt from
     registration under the Act in reliance on Section 4(2) thereof because such
     issuance  did not  involve  a  public  offering.  In  addition,  Dr.  Spana
     represented his intention to acquire the securities for investment only and
     not with a view to or for sale in connection with any distribution  thereof
     and  appropriate  legends  are  required  to  be  affixed  to  the  warrant
     certificates issued in such transactions.  Dr. Spana had adequate access to
     information  about the Company through his negotiations with the Company of
     the terms of the Rutgers  License and through his position as a Director of
     the Company.

10.  In  consideration  of  services  rendered  on  behalf  of  the  Company  in
     connection  with the  acquisition and negotiation of the Texas A&M License,
     in  February  1997,  the  Company  agreed to pay Fred  Mermelstein,  Ph.D.,
     $40,000 and to issue to Dr. Mermelstein  warrants to purchase 12,750 shares
     of Common Stock at an exercise  price of $6.00 per share,  exercisable  for
     seven years (the "Mermelstein  Warrants").  The issuance of the Mermelstein
     Warrants  was  deemed  to be  exempt  from  registration  under  the Act in
     reliance on Section  4(2) thereof  because such  issuance did not involve a
     public offering. In addition, Dr. Mermelstein  represented his intention to
     acquire the securities  for  investment  only and not with a view to or for
     sale in connection with any  distribution  thereof and appropriate  legends
     are  required  to be affixed  to the  warrant  certificates  issued in such
     transactions. Dr. Mermelstein had adequate access, through his negotiations
     with the  Company  of the terms of the Texas A&M  License,  to  information
     about the Company.  Moreover,  Dr. Mermelstein  represented to the Company,
     and the Company believed, that he was sophisticated and expert in financial
     matters.

11.  In  connection  with services  rendered by Ladenberg,  Thalmann & Co., Inc.
     ("Ladenberg"), and D. H. Blair Investment Banking Corp. ("D. H. Blair"), as
     placement agents in the offering of Series A Preferred Stock conducted from
     June 1992 to September 1992 (the "Series A Offering"),  the Company granted
     Ladenberg  and D.  H.  Blair  and/or  their  respective  designees  certain
     warrants  ("Series A Placement  Warrants") to purchase  Common Stock at any
     time until June 26, 1997. In April and June 1997,  Ladenberg and D.H. Blair
     and/or their respective  designees were issued  approximately 49,770 shares
     of Common Stock pursuant to the cashless exercise  provisions of the Series
     A Placement  Warrants.  The issuance of (i) the Series A Placement Warrants
     and (ii) the  issuance  of Common  Stock upon the  exercise of the Series A
     Placement  Warrants,  were deemed to be exempt from registration  under the
     Act in reliance on Section 4(2)  thereof  because  such  issuances  did not
     involve a public offering.  In addition,  each of Ladenberg and D. H. Blair
     and their  respective  designees  represented  its intention to acquire the
     securities  for  investment  only  and not  with a view  to or for  sale in
     connection  with any  distribution  thereof and  appropriate  legends  were
     required to be affixed to the  warrant  certificates.  Ladenberg  and D. H.
     Blair and/or their respective  designees each had adequate access,  through
     their  negotiations  with the Company as  placement  agents in the Series A
     Offering, to information about the Company. The shares of Common Stock were
     issued without  restrictive legends pursuant to exemptions afforded by Rule
     144(k).

12.  On April 17,  1997,  the  Company  entered  into an  agreement  with  Hill,
     Thompson,  Magid & Co.  ("HTM"),  pursuant to which HTM may perform certain
     investment banking and financial advisory services on a non-exclusive basis
     for the  Company  (the  "HTM  Investment  Banking  Agreement").  Among  the
     services  that might be provided by HTM are general  advice and guidance on
     long-term strategic  planning,  assistance with debt and equity financings,
     identification  of potential  strategic/corporate  partners,  financial and
     transaction  feasibility  analysis,  and mergers and acquisitions  advisory
     services. Pursuant to the Investment Banking Agreement, the Company granted
     to HTM warrants to purchase an  aggregate of 50,000  shares of Common Stock
     of the Company at an exercise price of $8.00 per share. The issuance of the
     HTM  Warrants  was deemed to be exempt from  registration  under the Act in
     reliance on Section  4(2) thereof  because such  issuance did not involve a
     public offering. In addition,  HTM represented its intention to acquire the
     securities  for  investment  only  and not  with a view  to or for  sale in
     connection  with any  distribution  thereof  and  appropriate  legends  are
     required  to be  affixed  to the  warrant  certificates  issuable  in  such
     transactions.  HTM had adequate access,  through its negotiations  with the
     Company  of  the  terms  of  the  HTM  Investment  Banking  Agreement,   to
     information about the Company.



                                      II-5

<PAGE>

13.  In July 1997, in  consideration of services being rendered by the Company's
     real  estate  advisor  who  is  representing  it  in  connection  with  the
     identification  and  negotiation  of potential  biopharmaceutical  clinical
     manufacturing sites throughout the country,  the Company issued warrants to
     purchase  45,000  shares of Common Stock at an exercise  price of $4.50 per
     share.  In December 1997,  these warrants were canceled and new warrants to
     purchase  115,000  shares of common  stock at $3.50 were issued to the real
     estate  advisor.  Such warrants will vest and are  exercisable  on the same
     terms as the original warrants. The issuance of such warrants was deemed to
     be exempt  from  registration  under the Act in  reliance  on Section  4(2)
     thereof  because  such  issuance  did not  involve  a public  offering.  In
     addition, such real estate advisor represented his intention to acquire the
     securities  for  investment  only  and not  with a view  to or for  sale in
     connection  with any  distribution  thereof  and  appropriate  legends  are
     required  to  be  affixed  to  the  warrant  certificates  issued  in  such
     transactions.  Such real estate  advisor had adequate  access,  through his
     negotiations    with   the   Company   in   connection    with    potential
     biopharmaceutical  clinical  manufacturing  sites, to information about the
     Company. Moreover, such real estate advisor represented to the Company, and
     the Company  believed,  that he was  sophisticated  and expert in financial
     matters.

14.  In December 1997, the Company issued warrants to purchase 200,000 shares of
     Common Stock at an exercise  price of $3.75 per share.  Such  warrants were
     issued  in  consideration  of  services  being  rendered  by the  Company's
     investment relations advisor.  Such warrants will vest upon the achievement
     of certain  performance-based  milestones  relating to the Company's  stock
     price and trading volume and are  exercisable in whole,  or in part, over a
     five-year  period.  The  issuance of such  warrants was deemed to be exempt
     from registration under the Act in reliance on Section 4(2) thereof because
     such  issuance  did not  involve  a  public  offering.  In  addition,  such
     investment  relations  advisor  represented  his  intention  to acquire the
     securities  for  investment  only  and not  with a view  to or for  sale in
     connection  with any  distribution  thereof  and  appropriate  legends  are
     required  to  be  affixed  to  the  warrant  certificates  issued  in  such
     transactions.  Such  investment  relations  advisor  had  adequate  access,
     through  his  negotiations  with the  Company,  to  information  about  the
     Company.  Moreover,  such investment  relations advisor  represented to the
     Company, and the Company believed,  that he was sophisticated and expert in
     financial matters.

   
15.  In May 1998,  the Company  issued  warrants to  purchase  80,000  shares of
     Common Stock at an exercise price of $4.03125 per share. Such warrants were
     issued in  consideration  of services  being  rendered  by a  non-exclusive
     financial  advisor to the Company.  Such warrants are exercisable in whole,
     or in part,  over a five-year  period.  The  issuance of such  warrants was
     deemed to be exempt from registration  under the Act in reliance on Section
     4(2) thereof  because such issuance did not involve a public  offering.  In
     addition,  such financial advisor  represented its intention to acquire the
     securities  for  investment  only  and not  with a view  to or for  sale in
     connection  with any  distribution  thereof  and  appropriate  legends  are
     required  to  be  affixed  to  the  warrant  certificates  issued  in  such
     transactions.  Such  financial  advisor had  adequate  access,  through its
     negotiations with the Company, to information about the Company.  Moreover,
     such  financial  advisor  represented  to  the  Company,  and  the  Company
     believed, that it was sophisticated and expert in financial matters.

16.  In April 1998,  the Company  issued  warrants to purchase  9,375  shares of
     Common Stock at an exercise  price of $4.00 per share.  Such  warrants were
     issued in  consideration  of  services  being  rendered  by an  engineering
     advisor to the Company. Such warrants are exercisable in whole, or in part,
     over a five-year  period.  The  issuance of such  warrants was deemed to be
     exempt from registration  under the Act in reliance on Section 4(2) thereof
     because such issuance did not involve a public offering. In addition,  such
     engineering advisor represented its intention to acquire the securities for
     investment  only and not with a view to or for sale in connection  with any
     distribution  thereof and appropriate legends are required to be affixed to
     the warrant  certificates  issued in such  transactions.  Such  engineering
     advisor had adequate access,  through its negotiations with the Company, to
     information  about  the  Company.   Moreover,   such  engineering   advisor
     represented  to  the  Company,  and  the  Company  believed,  that  it  was
     sophisticated and expert in financial matters.
    





                                      II-6

<PAGE>

Item 27.  Exhibits and Financial Statement Schedules

Exhibit No.                             Description
- -----------                             -----------

     *2.1  Asset Purchase  Agreement dated December 27, 1995, by and between the
           Registrant, InterNuria, Inc. and Interneuron Pharmaceuticals, Inc.

     #3.1  Certificate of Incorporation of the Registrant, as amended to date.

     *3.2  By-laws of the Registrant, as amended to date.

     *4.1  Reference is made to Exhibits 3.1 and 3.2.

     *4.2  Specimen of Common Stock certificate.

     *4.3  Specimen of Series B Convertible Preferred Stock certificate.

     *4.4  Investors'  Rights  Agreement dated November 20, 1995, by and between
           the Registrant and certain investors.

    **4.5  Form of  Subscription  Agreement,  by and between the  Registrant and
           certain purchasers of Series B Preferred Stock and Common Stock.

     *4.6  Form of Placement  Warrant Relating to Offering of Series B Placement
           Warrants.

   
   ***4.7  Form of Amendment to Subscription Agreement--Lock-Up Provisions.
    

      5.1  Opinion of Roberts, Sheridan & Kotel, a Professional Corporation.

     10.1  Reference is made to Exhibit 2.1.

  ##+10.2  Clinical Study and Research Agreement dated November 20, 1995, by and
           between the Registrant and Thomas Jefferson University.

    *10.3  The Registrant's 1992 Stock Option Plan.

    #10.4  Letter of Employment  dated May 17, 1996,  between the Registrant and
           Dr. Jeffrey M. Jonas.

    *10.5  Consulting  Agreement dated February 22, 1996, between the Registrant
           and Dr. Carl Spana.

    *10.6  Consulting  Agreement  dated May 9, 1996,  between the Registrant and
           Dr. David Berd.

    *10.7  Financial  Advisory Agreement dated June 12, 1996, by and between the
           Registrant and Paramount Capital, Inc.

  ##+10.8  License  Agreement  dated  November  20,  1995,  by and  between  the
           Registrant and Thomas Jefferson University.

    #10.9  Letter of Employment dated September 13, 1996, between the Registrant
           and David L. Tousley.

   #10.10  Letter of Employment dated September 13, 1996, between the Registrant
           and Ernest W. Yankee, Ph.D.


                                      II-7

<PAGE>

 ##+10.11  License  Agreement  dated  December  10,  1996,  by and  between  the
           Registrant  and Rutgers,  The State  University of New Jersey and the
           University of Medicine and Dentistry.

 ##+10.12  License  Agreement  dated  February  17,  1997,  by and  between  the
           Registrant and The Texas A&M University System.

   
###+10.13  Sponsored  Research  Agreement  dated May 2, 1997, by and between the
           Registrant  and Rutgers,  The State  University of New Jersey and the
           University of Medicine and Dentistry.

###+10.14  Sponsored  Research  Agreement dated May 12, 1997, by and between the
           Registrant and The Texas A&M University System.

####10.15  Lease Agreement  dated December 1, 1997 for Kansas City Facility,  as
           amended.

####10.16  Lease Agreement dated December 1, 1997 for Philadelphia Facility.
    

    *20.1  Stockholder  Information  Statement of the Registrant  dated June 15,
           1995.

     23.1  Consent of Roberts,  Sheridan & Kotel,  a  Professional  Corporation.
           Reference is made to Exhibit 5.1.

     23.2  Consent of Ernst & Young LLP, Independent Auditors.

     27.1  Financial Data Schedule.

*          Previously filed with the  Registration  Statement on Form SB-2 filed
           with the Commission on August 1, 1996.

**         Previously filed with Amendment No. 1 to the  Registration  Statement
           of Form SB-2 filed with the  Commission  in  September  23,  1996 and
           which   superseded   such  exhibit  as  previously   filed  with  the
           Registration  Statement  on Form SB-2  filed with the  Commission  on
           August 1, 1996.

   
***        Previously filed with Amendment No. 4 to the  Registration  Statement
           on Form SB-2 filed with the Commission on February 26, 1997.
    

#          Previously filed with Amendment No. 6 to the  Registration  Statement
           on Form SB-2 filed with the Commission on May 7, 1997.

##         Previously filed with Amendment No. 9 to the  Registration  Statement
           on Form SB-2 filed with the Commission on July 3, 1997.

###        Previously  filed  with  Post  Effective   Amendment  No.  1  to  the
           Registration  Statement  on Form SB-2  filed with the  Commission  on
           August 14, 1997.

####       Previously  filed  with  Post  Effective   Amendment  No.  3  to  the
           Registration  Statement  on Form SB-2  filed with the  Commission  on
           March 16, 1998.

+          Confidential  treatment  requested  as to certain  portions  of these
           exhibits. Such portions have been redacted.





                                      II-8

<PAGE>


Item 28.  Undertakings

The Company hereby undertakes that it will:

     (1) File,  during  any  period in which it  offers or sells  securities,  a
post-effective amendment to this registration statement to:

     (i) Include any prospectus required by section 10(a)(3) of the Act;

     (ii) Reflect in the prospectus any facts or events which,  individually  or
together,  represent a fundamental change in the information in the registration
statement; and notwithstanding the foregoing, any increase or decrease in volume
of securities offered (if the total dollar value of securities offered would not
exceed that which was  registered) and any deviation from the low or high end of
the estimated  maximum offering range may be reflected in the form of prospectus
filed with the  Commission  pursuant  to Rule 424(b) if, in the  aggregate,  the
changes  in the  volume  and price  represent  no more than a 20%  change in the
maximum  aggregate  offering price set forth in the "Calculation of Registration
Fee" table in the effective registration statement;

     (iii) Include any additional or changed material information on the plan of
distribution.

     (2) For  determining  liability  under the Act,  treat each  post-effective
amendment as a new  registration  statement of the securities  offered,  and the
offering of the securities at that time to be the initial bona fide offering.

     (3) File a post-effective  amendment to remove from registration any of the
securities that remain unsold at the end of the offering.

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

The Company hereby undertakes that it will:

     (1) For  determining  any liability  under the Act,  treat the  information
omitted from the form of prospectus filed as part of this registration statement
in reliance upon Rule 430A and  contained in a form of  prospectus  filed by the
Company  pursuant to Rule  424(b)(1),  or (4) or 497(h) under the Act as part of
this registration statement as of the time it was declared effective.

     (2) For determining any liability under the Act, treat each  post-effective
amendment that contains a form of prospectus as a new registration statement for
the securities offered in the registration statement,  and that offering of such
securities at that time as the initial bona fide offering of those securities.




                                      II-9

<PAGE>

                                   SIGNATURES

   
In accordance  with the  requirements of the Securities Act of 1933, as amended,
the Company  certifies that it has  reasonable  grounds to believe that it meets
all of the requirements for filing on Form SB-2 and authorized this Registration
Statement  to be  signed  on its  behalf  by  the  undersigned,  thereunto  duly
authorized, in the City of New York, State of New York, on this May 15, 1998.
    


                                                 AVAX TECHNOLOGIES, INC.

                                                 By: /s/ Michael S. Weiss
                                                     ---------------------------
                                                     Michael S. Weiss
                                                     Secretary and Director

In accordance  with the  requirements of the Securities Act of 1933, as amended,
the  Registration  Statement  has been  signed by the  following  persons in the
capacities and on the dates indicated:

<TABLE>
<CAPTION>
            Signature                            Name & Title                       Date
            ---------                            ------------                       ----
   
<S>                                    <C>                                      <C>
   /s/ Jeffrey M. Jonas, M.D.*         Jeffrey M. Jonas, M.D.
- ----------------------------------     President, Chief Executive Officer
                                       and Director                             May 15, 1998

      /s/ David L. Tousley*            David L. Tousley
- ----------------------------------     Chief Financial Officer
                                       (Principal Financial Officer)            May 15, 1998

     /s/ Edson D. de Castro*           Edson D. de Castro
- ----------------------------------     Director                                 May 15, 1998

/s/ John K. A. Prendergast, Ph.D.*     John K. A. Prendergast, Ph.D.
- ----------------------------------     Director                                 May 15, 1998

      /s/ Carl Spana, Ph.D.*           Carl Spana, Ph.D.
- ----------------------------------     Director                                 May 15, 1998

       /s/ Michael S. Weiss            Michael S. Weiss
- ----------------------------------     Secretary and Director                   May 15, 1998
    
</TABLE>


*By: /s/ Michael S. Weiss
     -----------------------------
     Michael S. Weiss
     Attorney-in-Fact




                                     II-10

<PAGE>

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






                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

                                   -----------

                                    EXHIBITS
                                       TO
   
                                 POST-EFFECTIVE
                                 AMENDMENT NO. 5
    
                                       TO
                                    FORM SB-2

                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933

                                   -----------

                             AVAX TECHNOLOGIES, INC.




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





<PAGE>

                                  EXHIBIT INDEX

Exhibit No.                            Description
- -----------                            -----------

     *2.1  Asset Purchase  Agreement dated December 27, 1995, by and between the
           Registrant, InterNuria, Inc. and Interneuron Pharmaceuticals, Inc.

     #3.1  Certificate of Incorporation of the Registrant, as amended to date.

     *3.2  By-laws of the Registrant, as amended to date.

     *4.1  Reference is made to Exhibits 3.1 and 3.2.

     *4.2  Specimen of Common Stock certificate.

     *4.3  Specimen of Series B Convertible Preferred Stock certificate.

     *4.4  Investors'  Rights  Agreement dated November 20, 1995, by and between
           the Registrant and certain investors.

    **4.5  Form of  Subscription  Agreement,  by and between the  Registrant and
           certain purchasers of Series B Preferred Stock and Common Stock.

     *4.6  Form of Placement  Warrant Relating to Offering of Series B Placement
           Warrants.

   ***4.7  Form of Amendment to Subscription Agreement--Lock-Up Provisions.

      5.1  Opinion of Roberts, Sheridan & Kotel, a Professional Corporation.

     10.1  Reference is made to Exhibit 2.1.

  ##+10.2  Clinical Study and Research Agreement dated November 20, 1995, by and
           between the Registrant and Thomas Jefferson University.

    *10.3  The Registrant's 1992 Stock Option Plan.

    #10.4  Letter of Employment  dated May 17, 1996,  between the Registrant and
           Dr. Jeffrey M. Jonas.

    *10.5  Consulting  Agreement dated February 22, 1996, between the Registrant
           and Dr. Carl Spana.

    *10.6  Consulting  Agreement  dated May 9, 1996,  between the Registrant and
           Dr. David Berd.

    *10.7  Financial  Advisory Agreement dated June 12, 1996, by and between the
           Registrant and Paramount Capital, Inc.

  ##+10.8  License  Agreement  dated  November  20,  1995,  by and  between  the
           Registrant and Thomas Jefferson University.

    #10.9  Letter of Employment dated September 13, 1996, between the Registrant
           and David L. Tousley.

   #10.10  Letter of Employment dated September 13, 1996, between the Registrant
           and Ernest W. Yankee, Ph.D.



<PAGE>

 ##+10.11  License  Agreement  dated  December  10,  1996,  by and  between  the
           Registrant  and Rutgers,  The State  University of New Jersey and the
           University of Medicine and Dentistry.

 ##+10.12  License  Agreement  dated  February  17,  1997,  by and  between  the
           Registrant and The Texas A&M University System.

###+10.13  Sponsored  Research  Agreement  dated May 2, 1997, by and between the
           Registrant  and Rutgers,  The State  University of New Jersey and the
           University of Medicine and Dentistry.

###+10.14  Sponsored  Research  Agreement dated May 12, 1997, by and between the
           Registrant and The Texas A&M University System.

####10.15  Lease Agreement  dated December 1, 1997 for Kansas City Facility,  as
           amended.

####10.16  Lease  Agreement  dated  December  1,  1997  for  Philadelphia
           Facility.

*20.1      Stockholder  Information  Statement of the Registrant  dated June 15,
           1995.

23.1       Consent of Roberts,  Sheridan & Kotel,  a  Professional  Corporation.
           Reference is made to Exhibit 5.1.

23.2       Consent of Ernst & Young LLP, Independent Auditors.

27.1       Financial Data Schedule.

*          Previously filed with the  Registration  Statement on Form SB-2 filed
           with the Commission on August 1, 1996.

**         Previously filed with Amendment No. 1 to the  Registration  Statement
           of Form SB-2 filed with the  Commission  in  September  23,  1996 and
           which   superseded   such  exhibit  as  previously   filed  with  the
           Registration  Statement  on Form SB-2  filed with the  Commission  on
           August 1, 1996.

***        Previously filed with Amendment No. 4 to the  Registration  Statement
           on Form SB-2 filed with the Commission on February 26, 1997.

#          Previously filed with Amendment No. 6 to the  Registration  Statement
           on Form SB-2 filed with the Commission on May 7, 1997.

##         Previously filed with Amendment No. 9 to the  Registration  Statement
           on Form SB-2 filed with the Commission on July 3, 1997.

###        Previously  filed  with  Post  Effective   Amendment  No.  1  to  the
           Registration  Statement  on Form SB-2  filed with the  Commission  on
           August 14, 1997.

####       Previously  filed  with  Post  Effective   Amendment  No.  3  to  the
           Registration  Statement  on Form SB-2  filed with the  Commission  on
           March 16, 1998.

+          Confidential  treatment  requested  as to certain  portions  of these
           exhibits. Such portions have been redacted.




                                                                     EXHIBIT 5.1

                                 [Letterhead of]
                        [Roberts, Sheridan & Kotel, P.C.]




                                                                    May 15, 1998


AVAX Technologies, Inc.
4520 Main Street, Suite 930
Kansas City, MO 64111

                            AVAX Technologies, Inc.
                            Registration on Form SB-2

Dear Sirs:

     We have acted as counsel for AVAX Technologies, Inc., a Delaware
corporation (the "Issuer"), in connection with the preparation of Post-Effective
Amendment No. 5 to the Registration Statement on Form SB-2 (the "Registration
Statement") filed with the Securities and Exchange Commission (the "Commission")
on May 14, 1998, Registration Number 333-09349, under the Securities Act of 1933
(the "Act") for the registration under the Act of the following securities of
the Issuer:

           (i) 1,080,898 shares of common stock, par value $.004 per share
           ("Common Stock");

           (ii) 4,950,703 shares of Common Stock issuable upon conversion of
           currently outstanding shares of Series B Convertible Preferred Stock,
           par value of $.01 per share (the "Series B Preferred Stock"); and

           (iii) up to 49,229 shares of Common Stock issuable upon (a) the
           conversion of shares of Series B Preferred Stock issuable upon
           exercise of the warrants issued to the placement agent and/or its
           designees relating to the offering of the Series B Preferred Stock
           (the "Series B Placement Warrants") and (b) exercise of warrants
           issued to the placement agent and/or its designees for certain bridge
           financing transactions of the Company (the "Bridge Placement
           Warrants," and together with the Series B Placement Warrants, the
           "Placement Warrants").

     In that connection, we have examined originals or copies, certified or
otherwise identified to our satisfaction, of certificates of public officials
and corporate records, instruments and documents of or affecting the Issuer,
including, without limitation, (i) the Certificate of



<PAGE>

                                                                               2

Incorporation of the Issuer, as amended to date; (ii) the Bylaws of the Issuer,
as amended to date; (iii) resolutions adopted by the Board of Directors and
Stockholders of the Issuer; (iv) the Certificate of Designations for the Series
B Preferred Stock; (v) a form of specimen stock certificate for the Common
Stock; (vi) a form of specimen stock certificate for the Series B Preferred
Stock; (vii) a form of the Series B Placement Warrant; and (viii) a form of the
Bridge Placement Warrant. We have also examined originals or copies, certified
or otherwise identified to our satisfaction, of certificates of officers of the
Issuer, and have reviewed such questions of law and made such other inquiries,
as we have deemed necessary or appropriate for the purpose of rendering this
opinion.

     In rendering our opinion, we have relied, as to matters of fact, upon
representations and warranties of the Issuer and upon such certificates and
other instruments of officers of the Issuer and public officials as we have
deemed necessary or appropriate for the purpose of rendering this opinion, in
each case without independent investigation or verification. Additionally,
without any independent investigation or verification, we have assumed (i) the
genuineness of all signatures, (ii) the authenticity of all documents submitted
to us as originals and the conformity with the original documents of all
documents submitted to us as certified, conformed or photostatic copies, (iii)
the authority of all persons signing any document other than the officers of the
Issuer, where applicable, signing in their capacity as such, (iv) the
enforceability of all the agreements we have reviewed in accordance with their
respective terms against the parties thereto, and (v) the truth and accuracy of
all matters of fact set forth in all certificates and other instruments
furnished to us.

     Based upon the foregoing, and subject to the limitations, qualifications
and assumptions set forth herein, we are of the opinion that:

     1. The Issuer is a corporation duly incorporated and is in good standing
under the laws of the State of Delaware.

     2. The 1,080,898 shares of Common Stock which may be sold in accordance
with the provisions of the Registration Statement have been legally issued and
are fully paid and nonassessable.

     3. The 4,950,703 shares of Common Stock issuable upon conversion of
currently outstanding shares of Series B Preferred Stock have been duly
authorized for issuance, and when issued upon conversion of the Series B
Preferred Stock will be legally issued, fully paid and nonassessable.

     4. The aggregate of up to 37,979 shares of Common Stock issuable upon
conversion of the Series B Preferred Stock after exercise of the Series B
Placement Warrants have been duly authorized for issuance, and when issued upon
conversion of the Series B Preferred Stock after exercise of the Series B
Placement Warrants, and the payment of the applicable exercise price thereof or
the use of the cashless exercise provision thereof will be legally issued, fully
paid and nonassessable.



<PAGE>

                                                                               3

     5. The aggregate of up to 11,250 shares of Common Stock issuable upon
exercise of the Bridge Placement Warrants have been duly authorized for
issuance, and when issued upon exercise of the Bridge Placement Warrants, and
the payment of the applicable exercise price thereof or the use of the cashless
exercise provision thereof will be legally issued, fully paid and
non-assessable.

     Members of this Firm are admitted to practice law only in the State of New
York and do not purport to be experts on, and are not expressing any opinion
with respect to, any laws other than the laws of the State of New York, the
General Corporation Law of the State of Delaware and the Federal laws of the
United States of America.

     We hereby consent to the filing of this opinion as Exhibit 5.1 to the
Registration Statement and the reference to us under the heading "Legal Counsel"
in the Prospectus included in Part I of the Registration Statement. In giving
such consent, we do not thereby admit that we are in the category of persons
whose consent is required under Section 7 of the Act.


                                             Very truly yours,

                                             /s/ Roberts, Sheridan & Kotel, P.C.





AVAX Technologies, Inc.                                            Exhibit 11.1
Computation of Earnings (Loss) Per Share
<TABLE>
<CAPTION>
                                                                                                              Three        Three
  Month of                                                Months O/S     Weighted      Year         Year      Months       Months
Issuance For                                  Number of   Each Given     Average      Ended        Ended      Ended        Ended
F/S Purposes                                   Shares        Year         Shares       1996         1997     31-Mar-97    31-Mar-98
- ------------                                 ---------    ----------    --------     -------      -------   ---------    ---------
<S>                                           <C>               <C>      <C>        <C>          <C>         <C>          <C>      
January '90                                     582,500                               582,500      582,500     582,500      582,500

August '91                                      230,000                               230,000      230,000     230,000      230,000

June '92                                        287,098                               287,098      287,098     287,098      287,098

Series A Preferred:
June '92                                        259,375                               (a)          (a)          (a)          (a)
July '92                                         59,375
Sept '92                                          3,125
                                              ---------
                                                321,875
                                              ---------

July '93                                          7,358
November '93                                      1,359
                                              ---------
                                                  8,717                                 8,717        8,717       8,717        8,717
                                              ---------

July '94                                          3,750                       --        3,750        3,750       3,750        3,750

April '95                                      (111,330)
May '95                                        (196,618)
September '95                                   402,490
November '95                                  1,374,728
                                              ---------
                                              1,469,270                             1,469,270    1,469,270   1,469,270    1,469,270
                                              ---------

March '96                                       (77,901)        9.5      (61,672)
May & June '96                                  321,875           7      187,760
May & June '96                                  129,099           7       75,308
June '96                                            500         6.5          271
July '96(c)                                      46,875         5.5       21,484
                                              ---------               ----------
                                                420,448                  223,152      223,152      420,448     420,448      420,448
                                              ---------               ----------

June '97(f)                                     371,756         6.5      201,368
July, August & Sept '97                         661,901         4.5      248,213
Oct, Nov & Dec '97                              402,153         1.5       50,269
                                              ---------               ----------
                                              1,435,810                  499,850           --      499,850          --    1,435,810
                                              ---------               ----------

Jan, Feb & March '98                            285,832         1.5                        --           --          --      142,916

Cheap Shares:
June '96                                          9,375
Treasury Shares                                     (96)
                                              ---------
                                                  9,279                                 9,279        9,279       9,375        9,375
                                              ---------

CheapWarrants(b):
January and February '96
and August '95                                  120,000
Treasury Shares                                  (1,225)
                                              ---------
                                                118,775                               118,775      108,775     118,775      100,000
                                              ---------

June, July and(e)
September '92 warrants                           35,337
Treasury Shares                                 (23,348)
                                              ---------
                                                 11,989                                11,989       11,989      11,989       35,337
                                              ---------

Cheap Options(d)
May '96                                         318,873
Treasury Shares                                 (81,345)
                                              ---------
                                                237,528                               237,528      118,764     237,528           --
                                              ---------
</TABLE>


<PAGE>




AVAX Technologies, Inc.                                            Exhibit 11.1
Computation of Earnings (Loss) Per Share (continued)


<TABLE>
                                                                      --------------------------------------------------------------
<S>                                                                    <C>              <C>              <C>              <C>      
Weighted Average Shares                                                3,182,058        3,750,440        3,379,450        4,725,221
                                                                      ==============================================================
Net Income (Loss) Attributable to Common Stockholders                 (2,668,586)      (4,266,125)        (962,165)      (1,400,306)
Net Income (Loss) Per Share                                           $    (0.84)      $    (1.14)      $    (0.28)      $    (0.30)
</TABLE>

(a) -  Not included because it would be anti-dilutive

(b) - represents bridge loan warrants  (100,000) issued within one year of IPO,
      exercised after June '96

      Also includes 20,000 bridge  placement  warrants issued within one year of
      IPO, not yet  exercised,  and excludes  11,250 bridge  placement  warrants
      issued  prior to June  '95,  not yet  exercised  (20,000 + 11,250 = 31,250
      total bridge placement warrants)

(c) - represents the non-cheap portion of the bridge warrants exercised in July
      issued  prior to June '95 (9,375 + 100,000 + 46,875 = 156,250 total bridge
      warrants)

(d) - 252,500  options  issued to  Officers  and an employee  in  September  not
      considered  cheap options since issued  subsequent to IPO and not included
      because it would be anti-dilutive

(e) - represents  additional  warrants,   exercised  in  June  '97  in  cashless
      exercise, issued under anti-dilution provisions within one year of IPO

(f) - includes 14,433 additional  warrants,  exercised in June '97 in a cashless
      exercise,  issued under anti-dilution  provisions more than one year prior
      to IPO


<TABLE>
<CAPTION>
                                                                                                            Three            Three 
                                                                          Year              Year            Months           Months
                                                                          Ended             Ended           Ended            Ended
                                                                          1996              1997          31-Mar-97        31-Mar-98
                                                                          ----              ----          ---------        ---------
                                            Cheap Stock Effect                                                           
                                            ----------------------------------------------------------------------------------------
                                            <S>                          <C>              <C>              <C>                    
                                            Cheap shares                   4,640               --                               --
                                                                                                                         
                                            Cheap Warrants                                                               
                                                             (b)          68,775            8,775           18,775              --
                                                             (e)          11,989            5,995           11,989              --
                                                                                                                               
                                            Cheap Options                237,528          118,764          237,528              --
                                            ----------------------------------------------------------------------------------------
                                                                         322,932          133,534          268,292              --
</TABLE>


<PAGE>


AVAX Technologies, Inc.                                             Exhibit 11.1
Computation of Supplementary Earnings (Loss) Per Share

<TABLE>
<CAPTION>
                                                                                                          Three            Three
  Month of                                Months O/S         Weighted        Year         Year            Months           Months
Issuance For              Number of       Each Given         Average        Ended        Ended            Ended            Ended
F/S Purposes               Shares            Year             Shares         1996         1997           31-Mar-97        31-Mar-98
- ------------             ---------        ----------        --------       -------      -------         ---------        ---------
<S>                                                                                   <C>                <C>             <C>        
Net Income (Loss) Attributable to Common Stockholders                                 (4,266,125)        (962,165)       (1,400,306)
                                                                                                      
Interest on Debt Repaid                                                                       --               --                --
Deferred Financing Cost related to Debt Repaid                                                --               --                --
                                                                                                      
                                                                                      ----------------------------------------------
Supplementary Net Income (Loss)                                                       (4,266,125)        (962,165)       (1,400,306)
                                                                                      ----------------------------------------------
Weighted Average Shares                                                                3,750,440        3,379,450         4,725,221
                                                                                                      
Additional Shares:                                                                                    
Conversion of Series A Preferred                                                         (f)              (f)               (f)
Less:Series A Preferred included in primary calculation                                       --               --                --
Common Stock Equivalents sold to retire debt                                             320,664          320,664           320,664
                                                                                      ----------------------------------------------
Supplementary Weighted Average Shares                                                  4,071,104        3,700,114         5,045,885
                                                                                      ----------------------------------------------
                                                                                                      
Supplementary Net Income (Loss) per share                                             $    (1.05)      $    (0.26)       $    (0.28)
</TABLE>

                                                                      
                                                                      
                                                                      
(f) - Included in weighted average shares for primary calculation




                                                                    EXHIBIT 23.2








                         Consent of Independent Auditors


We consent to the reference to our firm under the caption "Experts" and to the
use of our report dated January 16, 1998 in Post-Effective Amendment No. 5 to
the Registration Statement (Form SB-2 No. 333-09349) and related Prospectus of
AVAX Technologies, Inc. (formerly Walden Laboratories, Inc.) for the
registration of 6,080,830 shares of common stock.


                                                               Ernst & Young LLP


Kansas City, Missouri
May 14, 1998



<TABLE> <S> <C>


<ARTICLE>                     5
<LEGEND>
      This schedule  contains summary  information  extracted  fromthe Company's
      registration  statement on Form SB-2.  filed with the  commission on April
      231, 1998.
</LEGEND>

       
<S>                             <C>                                <C>                    
<PERIOD-TYPE>                   12-MOS                             3-MOS                 
<FISCAL-YEAR-END>                              DEC-31-1997                        DEC-31-1997
<PERIOD-START>                                 JAN-01-1997                        JAN-01-1998
<PERIOD-END>                                   DEC-31-1997                        MAR-31-1998
<CASH>                                         6,820,884                          3,388,303 
<SECURITIES>                                   9,102,028                          11,264,405 
<RECEIVABLES>                                  0                                  0 
<ALLOWANCES>                                   0                                  0 
<INVENTORY>                                    0                                  0 
<CURRENT-ASSETS>                               17,277,841                         14,764,016 
<PP&E>                                         91,959                             103,739 
<DEPRECIATION>                                 14,967                             19,582 
<TOTAL-ASSETS>                                 17,354,833                         14,848,173 
<CURRENT-LIABILITIES>                          1,553,726                          380,096 
<BONDS>                                        0                                  0 
                          0                                  0 
                                    2,041                              1,932 
<COMMON>                                       18,329                             19,472 
<OTHER-SE>                                     15,801,107                         14,468,077 
<TOTAL-LIABILITY-AND-EQUITY>                   17,354,833                         14,848,173
<SALES>                                        0                                  0 
<TOTAL-REVENUES>                               0                                  0 
<CGS>                                          0                                  0 
<TOTAL-COSTS>                                  0                                  0 
<OTHER-EXPENSES>                               0                                  0
<LOSS-PROVISION>                               0                                  0
<INTEREST-EXPENSE>                             (150,602)                          0 
<INCOME-PRETAX>                                0                                  0 
<INCOME-TAX>                                   0                                  0 
<INCOME-CONTINUING>                            0                                  0 
<DISCONTINUED>                                 0                                  0 
<EXTRAORDINARY>                                0                                  0 
<CHANGES>                                      0                                  0 
<NET-INCOME>                                   (4,266,125)<F1>                    (1,400,306)
<EPS-PRIMARY>                                  (1.14)                             (.30)<F1>
<EPS-DILUTED>                                  0                                  0 
<FN>
(1)  EPS-BASIC
</FN>

                                                                   


</TABLE>


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