THERMOGENESIS CORP
424B1, 1999-03-03
LABORATORY APPARATUS & FURNITURE
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                                                                     PROSPECTUS


                                5,677,700 Shares

                               THERMOGENESIS CORP.

                                  Common Stock


        All of the shares of common  stock of  THERMOGENESIS  CORP.  offered are
being  sold by selling  stockholders  listed in this  prospectus.  Of the shares
being sold by the selling  stockholders,  up to  5,387,700  shares may be resold
upon the conversion of Series A Convertible  Redeemable  Preferred Stock, and up
to 290,000 shares may be resold upon the exercise of outstanding  warrants.  The
Series A  preferred  stock  and  warrants  were  issued  in  private  placements
completed in November  1998 and January  1999.  We will not receive any proceeds
from the sale of any common stock by the selling stockholders.

        Our  common  stock is traded  and  listed on The  Nasdaq  Stock  Market,
SmallCap  Market,  under the  symbol  "KOOL." On  February  26,  1999,  the last
reported  sale  price for the  common  stock was  $2.28.  There is no market for
either the Series A preferred stock or the warrants. We are required to register
the  shares  for resale  and will pay for  expenses  related to this  prospectus
estimated to be $15,000.








          INVESTING IN OUR COMMON STOCK INVOLVES A HIGH DEGREE OF RISK.
                          SEE "RISK FACTORS" AT PAGE 5.
                         -------------------------------

NEITHER  THE  SECURITIES  AND  EXCHANGE  COMMISSION  NOR  ANY  STATE  SECURITIES
COMMISSION HAS APPROVED OR DISAPPROVED OF THE COMMON STOCK OR DETERMINED IF THIS
PROSPECTUS  IS TRUTHFUL OR  COMPLETE.  ANY  REPRESENTATION  TO THE CONTRARY IS A
CRIMINAL OFFENSE.

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




                The date of this Prospectus is February 26, 1999.

<PAGE>2



                              AVAILABLE INFORMATION

        THERMOGENESIS CORP. files annual,  quarterly and current reports,  proxy
statements and other  information  with the Securities and Exchange  Commission.
You may read and copy any reports,  statements or other  information  on file at
the  Commission's  public  reference  room in  Washington,  D.C. You can request
copies of those documents,  upon payment of a duplicating fee, by writing to the
Commission.

        THERMOGENESIS CORP. has filed a registration  statement on Form S-3 with
the  Commission.  This  prospectus,  which  forms a part  of  that  registration
statement,  does  not  contain  all  information  included  in the  registration
statement.   Certain  information  is  omitted  and  you  should  refer  to  the
registration statement and its exhibits. With respect to references made in this
prospectus  to any  contract  or other  document  of  THEMOGENESIS  CORP.,  such
references  are not  necessarily  complete  and you should refer to the exhibits
attached  to the  registration  statement  for copies of the actual  contract or
document.   You  may  review  a  copy  of  the  registration  statement  at  the
Commission's  public  reference room, and at the  Commission's  regional offices
located in Chicago,  Illinois and New York, New York. Please call the Commission
at  1-800-SEC-0330  for  further  information  on the  operation  of the  public
reference rooms. THEMOGENESIS CORP.'s filings and the registration statement can
also be reviewed by accessing the Commission's website at http://www.sec.gov.

                 INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

        The Commission  allows us to  "incorporate by reference" the information
we file with them, which means that we can disclose important information to you
by referring you to those documents.  The information  incorporated by reference
is considered part of this  prospectus,  and information that we file later with
the Commission will  automatically  update and supersede the information in this
prospectus.  We  incorporate  by reference  the  documents  listed below and any
future filings we make with the Commission  under Sections  13(a),  13(c), 14 or
15(d) of the Securities Exchange Act of 1934 until the selling stockholders sell
all the shares offered by this prospectus.

        (1) Annual Report on Form 10-K for the year ended June 30, 1998;

        (2) Quarterly  Report on Form 10-Q for the quarter  ended  September 30,
1998;

        (3) Quarterly  Report on Form 10-Q for the quarter  ended  December 31,
1998;

        (4) Current Report on Form 8-K for the event dated January 14, 1999;

        (5) Proxy Statement for the Annual Meeting of  Stockholders  held on
December 11, 1998; and

        (6) The  description of  THEMOGENESIS  CORP.'s common stock contained in
Form 8-A.

        THERMOGENESIS  CORP.'s  Exchange  Act file  number is  0-16375.  You may
request a copy of these filings at no cost by writing or  telephoning  us at the
following address:  THERMOGENESIS  CORP., 3146 Gold Camp Drive,  Rancho Cordova,
California 95670, Attention: Corporate Secretary; telephone (916) 858-5100.


<PAGE>3


                               PROSPECTUS SUMMARY

        This  summary  highlights   information   contained  elsewhere  in  this
prospectus.  This  summary  is not  complete  and  does not  contain  all of the
information  that you should consider before  investing in the common stock. You
should  carefully  read the  entire  prospectus,  including  the  documents  and
information   incorporated  by  reference  into  it.  This  Prospectus  contains
forward-looking statements that are subject to risks and uncertainties,  such as
THERMOGENESIS  CORP.'s  products being subject to regulatory  approvals,  market
acceptance of new technologies, and other risks detailed in the section entitled
Risk  Factors  and in  THERMOGENESIS  CORP.'s  Annual  Report as filed  with the
Commission. A glossary of certain technical terms used is located at the back of
the Prospectus.

Our Business

THERMOGENESIS    CORP.   is   a   leading    developer   and   manufacturer   of
micro-manufacturing  systems  designed to harvest  biopharmaceutical  drugs from
blood.  Biopharmaceutical drugs utilize the body's naturally occurring proteins,
enzymes,  growth  factors,  hormones and  progenitor  cells for the treatment of
human disease.  THERMOGENESIS  CORP.'s  technology  platforms  micro-manufacture
biopharmaceutical  drugs from a single  donation of blood in contrast to "pools"
of blood from thousands of donors or expensive recombinant technology.

Our Strategy

Our strategy to exploit our market opportunity includes the following:

        o      Utilize our expertise in the areas of thermodynamics and 
               cryopreservation.

        o      Develop  products  through platform designs to build new products
               with  only  a  small   incremental   research   and   development
               investment.

        o      Become the leader in the  design,  development,  manufacture  and
               sale of medical  devices  which produce  biopharmaceutical  drugs
               from an  autologous  or  directed  single  donor unit of blood to
               reduce or  eliminate  contamination  and risk of infection to the
               recipient.

        o      Develop disposable products which are used with platform designed
               products to provide a recurrent stream of revenue.

Our History

THERMOGENESIS   CORP.'s  core  expertise   lies  in  the  technical   fields  of
thermodynamics, and cryopreservation;  technologies that it initially applied to
the   development   of  ultra  rapid   freezers  and  thawers,   Food  and  Drug
Administration  ("FDA") class I products currently being sold to blood banks and
hospitals  in 32 countries  throughout  the world.  Until the fourth  quarter of
fiscal year 1998,  THERMOGENESIS  CORP.'s revenues had been principally  derived
from  these  core  products.  Following  four years of  intensive  research  and
development  THERMOGENESIS  CORP. began shipping in the second quarter of fiscal
year 1998 its first new biopharmaceutical drug micro-manufacturing  system,  the

<PAGE>4



BioArchiveTM  System,  a  computer  controlled  liquid  nitrogen  platform  with
dedicated  disposables  for the  manufacture,  cryopreservation  and  archive of
hematopoietic stem and progenitor cells sourced from placental cord blood, which
is used to reconstitute  the immune system of patients  suffering from leukemia,
lymphoma,  diverse inherited anemias, or hypoproliferative  stem cell disorders.
THERMOGENESIS  CORP.  has entered  into a period of rapid  transformation  as it
begins to manufacture and market micro-manufacturing  systems which may generate
recurring  revenues  from  the  ongoing  sale of high  margin  blood  processing
disposables.

THERMOGENESIS  CORP.'s  strategy  is to  utilize  its two new  Biopharmaceutical
Technology  Platforms - the BioArchive Platform and the CryoSealTM Platform - as
the   basis   for   developing   micro-   manufacturing   systems   to   produce
biopharmaceutical  drugs from either  autologous or single  directed donor blood
which  will  compete  in two major  medical  markets:  Wound  Care and  Cellular
Therapy.

THERMOGENESIS CORP. is incorporated in Delaware. THERMOGENESIS CORP.'s principal
executive  offices  are  located  at  3146  Gold  Camp  Drive,  Rancho  Cordova,
California 95670 and its telephone number is (916) 858-5100.

                                  Risk Factors

For a  discussion  of  considerations  relevant to an  investment  in the common
stock. See the section entitled "RISK FACTORS" beginning on page 5.


                                  The Offering

Common Stock Outstanding Before the Offering.........................18,930,685
Common Stock Offered by Selling Stockholders(1).......................5,677,700
Common Stock Outstanding After the Offering(1).......................24,608,385
Use of Proceeds............................THERMOGENESIS CORP. will not receive
                                                 any proceeds from the offering
Nasdaq SmallCap Symbol.....................................................KOOL


(1)     Assumes that Series A preferred stock  shareholders  have converted such
        shares into  5,387,700  shares of common stock in the aggregate and that
        warrantholders  have exercised their warrants to purchase 290,000 shares
        of common stock in the aggregate.


<PAGE>5


                                  RISK FACTORS

An investment in our common stock involves a number of very  significant  risks.
Because of these risks,  only persons able to bear the risk of and withstand the
loss of their entire investment  should invest in the common stock.  Prospective
investors  should  also  consider  the  following  before  making an  investment
decision.

Recurring Losses.  Except for net income of $11,246 for fiscal 1994 on net sales
of $2,678,192,  THERMOGENESIS CORP. has not been profitable since its inception.
For the fiscal year ended June 30, 1998,  THERMOGENESIS  CORP. had a net loss of
$9,550,795 on net sales of $4,396,891,  and an  accumulated  deficit at June 30,
1998, of $20,739,545.  The report of independent  auditors on the Company's June
30, 1998,  financial  statements  includes an explanatory  paragraph  indicating
there is  substantial  doubt about the Company's  ability to continue as a going
concern.  For the six months ended December 31, 1998,  THEMOGENESIS  CORP. had a
net loss of $3,356,798.

Dependence Upon New Products for Future Growth. Historically,  substantially all
of our sales  have been from  products  related  to the  freezing,  thawing  and
storing  of blood  plasma.  Because we expect  the blood  plasma  market to have
limited  growth,  new  products  for the  biotechnology  market  will have to be
developed  for future  growth.  THEMOGENESIS  CORP.  is  currently  focusing  on
developing  thermodynamic  blood  processing  systems  such as: (1) a system for
processing  cryoprecipitated AHF utilizing a thermodynamic device and disposable
processing containers  ("CryoSeal(TM) System"); and (2) a system for collecting,
processing,  controlled-rate  freezing and inventory  management of thermolabile
products in liquid nitrogen utilizing disposable  containers ("N2 BioArchive(TM)
System").  See "Annual  Report on Form 10-K -- The Company."  Although these two
products use  technology  related to the freezing,  thawing and storage of blood
plasma, these products represent a departure from THERMOGENESIS  CORP.'s current
core blood  plasma  business.  Further,  although  THERMOGENESIS  CORP.  has had
discussions  with  experts in areas of  application  for these  products,  these
products are still in their development and initial market phase.  THERMOGENESIS
CORP. has not yet had significant sales for these products.  No assurance can be
given that all of these potential products can be successfully developed, and if
developed, that a market will also develop for them.

Government  Regulation  of  Products.  Most of  THERMOGENESIS  CORP.'s  products
require FDA  clearance to sell in the U.S.  Further,  THERMOGENESIS  CORP.  will
require  approval  from  comparable  agencies  to sell its  products  in foreign
countries.  These  approvals  may  limit  the U.S.  or  foreign  market in which
THERMOGENESIS CORP.  products may be sold or circumscribe  applications for U.S.
or foreign markets in which THERMOGENESIS CORP.'s products may be sold. Further,
if  THERMOGENESIS  CORP.  cannot  establish that its products are  substantially
equivalent,  or superior, in safety and efficacy to previously approved products
in the U. S.,  delays may result in final  clearance  from the FDA for marketing
its  products.  No  assurance  can be given  that the FDA  clearance  to  market
THERMOGENESIS CORP.'s products in the U. S. will be obtained, or that regulatory
approval  will be received  in all foreign  countries.  Although  the  standards
established by the FDA are generally more  encompassing,  THERMOGENESIS  CORP.'s
products  may also be required to meet  certain  additional  criteria or receive
certain approvals from other foreign governments for marketing and sales.


<PAGE>6



Influence of Governmental  and Insurance  Companies on Sales of Products Made by
THERMOGENESIS CORP. THERMOGENESIS CORP.'s business may be materially affected by
continuing  efforts by  government  and third  party  payors  such as  medicare,
medicaid,  private health insurance plans to reduce the costs of healthcare. For
example,  in certain  foreign  markets the pricing and profit margins of certain
healthcare   products  are  subject  to  government   controls.   In  the  U.S.,
THEMOGENESIS  CORP.  expects that there will  continue to be a number of federal
and state  proposals  to  implement  similar  government  control.  In addition,
increasing  emphasis on managed care in the U.S. will continue to place pressure
on the pricing of healthcare products. As a result, continuing effort to contain
healthcare   costs  may  result  in  reduced  sales  or  price   reductions  for
THERMOGENESIS CORP.'s products.

Inability to Protect Our Patents,  Trademarks and Other Proprietary Rights Could
Adversely  Impact  Our  Competitive  Position.  We  believe  that  our  patents,
trademarks  and other  proprietary  rights are  important to our success and our
competitive  position.  Accordingly,  we  devote  substantial  resources  to the
establishment and protection of our patents,  trademarks and proprietary rights.
We currently hold patents for products,  and have patents pending for additional
products,  that we market or intend to market. However, our actions to establish
and  protect  our  patents,  trademarks  and  other  proprietary  rights  may be
inadequate to prevent  imitation of our products by others or to prevent  others
from claiming  violations of their  trademarks and proprietary  rights by us. If
our products are challenged as infringing upon patents of other parties, we will
be  required to modify the design of the  product,  obtain a license or litigate
the issue,  all of which may have an adverse  business  effect on  THERMOGENESIS
CORP.

Trade  Secrets.  We use various  methods,  including the use of  confidentiality
agreements with employees,  vendors and customers,  to protect our trade secrets
and proprietary know-how for our products. However, such methods may not provide
complete  protection  and there can be no assurance  that others will not obtain
THERMOGENESIS  CORP.'s  know-how,  or independently  develop the same or similar
technology.

Competition. THERMOGENESIS CORP. hopes to develop a competitive advantage in the
medical  applications of its products,  but there are many  competitors that are
substantially  larger and possess greater financial resources and personnel than
THERMOGENESIS CORP.  THERMOGENESIS CORP.'s current principal market is the users
of  ultra-rapid  blood  plasma  freezing and thawing  equipment.  There are four
companies  which sell freezers to the blood plasma  freezing  industry which are
larger and possess  greater  financial and other  resources  than  THERMOGENESIS
CORP. The CryoSeal System may face competition  from major plasma  fractionaters
which  currently  sell fibrin glue sourced from pooled plasma  outside the U. S.
With  regard to the  BioArchive  System,  numerous  larger and  better  financed
medical device manufacturers may choose to enter this market as it develops.

Limited  Marketing  and  Sales  Force  for  New  Products.  THERMOGENESIS  CORP.
currently  sells its existing Class I medical devices through a direct sales and
marketing  force.  Although  THERMOGENESIS  CORP. has entered into  distribution
agreements for the area of the two new platform products there are no assurances
that the distributors will produce significant sales of the systems.

Lack of Production  Experience for New Products.  THERMOGENESIS CORP.  currently
manufactures  its Class I medical  devices - blood plasma  thawers and freezers.

<PAGE>7


Although  THERMOGENESIS  CORP.  has  redesigned  its  manufacturing  facility to
accommodate the BioArchive System and the CryoSeal System,  THERMOGENESIS  CORP.
does not have  significant  experience  in  manufacturing  more complex Class II
medical devices such as the BioArchive  System and the CryoSeal System or in the
manufacture  of  disposables.  Furthermore,  there  can  be  no  assurance  that
THERMOGENESIS CORP.'s current resources and manufacturing  facility could handle
a  significant  increase  in orders  for  either  the  BioArchive  System or the
CryoSeal System.  If  THERMOGENESIS  CORP. is unable to meet demand for sales of
the new systems,  it would need to contract with third-party  manufacturers  for
the backlog,  and no assurances can be made that such third-party  manufacturers
can be retained,  or retained on terms favorable to THERMOGENESIS  CORP. and its
pricing of the  equipment.  Inability  to have  products  manufactured  by third
parties at a competitive price will erode anticipated margins for such products,
and negatively impact profitability.

No Assurance of New Product  Acceptance.  The market acceptance of THERMOGENESIS
CORP.'s new products in development  will depend upon the medical  community and
third-party  payers  accepting  the  products as  clinically  useful,  reliable,
accurate  and cost  effective  compared  to  existing  and  future  products  or
procedures.  Market acceptance will also depend on THERMOGENESIS CORP.'s ability
to  adequately  train  technicians  on how to use the  CryoSeal  System  and the
BioArchive System. Even if THERMOGENESIS CORP.'s systems are clinically adopted,
the use may not be  recommended  by the medical  profession or hospitals  unless
acceptable  reimbursement  from health care and third-party payers is available.
Failure of either of these new systems to achieve significant market share could
have  material  adverse  effects on  THERMOGENESIS  CORP.'s long term  business,
financial condition and results of operation. See "Annual Report on Form 10-K --
Description  of  Business"  and  "Risk  Factors  --  Uncertain  Availability  of
Third-Party Reimbursement."

There is No  Assurance  That Our Senior  Management  Team Will  Remain  With Us.
THERMOGENESIS  CORP. is dependent  upon the experience and services of Philip H.
Coelho, Chairman and Chief Executive Officer, and James H. Godsey, President and
Chief  Operating  Officer.  The loss of either  person  would  adversely  affect
THERMOGENESIS CORP.'s operations.  THERMOGENESIS CORP. has obtained key man life
insurance  covering Mr. Coelho in the amount of  $1,000,000  as some  protection
against this risk. See "Annual Report on Form 10-K -- Employees."

Product  Liability and Uninsured  Risks. We may be liable if any of our products
causes  injury,  illness or death.  We also may be required to recall certain of
our products  should they become  damaged or if they are  defective.  We are not
aware of any material product  liability claim against us. Further we maintain a
general liability policy which includes product liability coverage of $1,000,000
per occurrence and  $2,000,000  per year in the  aggregate.  However,  a product
liability claim against us could have a material  adverse effect on our business
or financial condition.

Risk of Software  Defects.  Our CryoSeal  System and  BioArchive  System rely on
computer software  components that direct the harvesting process of the CryoSeal
System, and the controlled-rate freezing,  storage and retrieval robotics of the
BioArchive  System.  The software program for these products,  including updated
versions  in the future,  may contain  undetected  errors or  failures.  Despite
testing by the Company and customers, there can be no assurance that errors will
not be found in the software during continuous use. Unfound errors may result in
loss or delay in market acceptance,  which could have an adverse material effect
on the Company's business, financial condition and results of operations.

<PAGE>8

Future  Sales of  Unregistered  Shares  Could Have A Negative  Impact on Trading
Price of the Common Stock. Under an agreement with the selling stockholders,  we
have agreed to register for resale by this prospectus  shares of common stock to
be issued  upon the  conversion  of the  Series A  preferred  stock and upon the
exercise of the  warrants.  The number of shares of common stock  available  for
resale by this  prospectus  represents  approximately  30% of our  common  stock
outstanding.  Because the trading  price for our common stock may be affected by
the number of shares  available  for resale,  the market price of  THERMOGENESIS
CORP.  common  stock could drop as a result of sales of a large number of shares
of THERMOGENESIS  CORP.  common stock in the market after this offering,  or the
perception that such sales could occur.

Possible Need for Additional Financing.  Based on proceeds of approximately $6.5
million  received in  THERMOGENESIS  CORP.'s most recent private  placement,  we
believe  we will  have  sufficient  working  capital  for our 1999  fiscal  year
operations.  However, if actual sales do not meet expectations, or marketing and
production  costs increase  significantly,  we may need additional  financing to
complete and implement  our business  objectives.  Further,  delays in obtaining
required governmental approvals to, or additional testing requirements prior to,
marketing our new products will result in decreased revenues and increased costs
that may require THERMOGENESIS CORP. to seek additional financing. THERMOGENESIS
CORP.  is  attempting  to obtain a bank line of credit  secured by its  accounts
receivable.  However,  we  cannot  guarantee  that we will be able to  obtain  a
working  line  of  credit.  In the  event  that  there  is a cash  shortage  and
THERMOGENESIS CORP. is unable to obtain a bank loan, additional equity financing
will be  required  which  will have the  effect of  diluting  the  ownership  of
existing shareholders.

No Cash Dividends.  To date, we have not paid any cash dividends,  and we do not
expect to pay any cash on our common stock in the foreseeable future.


<PAGE>9


                                 SUMMARY FINANCIAL INFORMATION

The  following  summary  information  is derived from the  financial  statements
included in THERMOGENESIS  CORP.'s Annual Report on Form 10-K for the year ended
June 30,  1998,  and  Quarterly  Report  on Form 10-Q for the six  months  ended
December  31, 1998,  incorporated  by  reference  herein,  and should be read in
conjunction with those financial statements and the related notes thereto:

<TABLE>
<CAPTION>

                                                                                       For the Six Months
                                           For the Year Ended June 30,                 Ended December 31,
                                           ---------------------------                 ------------------
                                     1996            1997             1998             1997           1998
                                     ----            ----             ----             ----           ----

<S>                             <C>              <C>             <C>              <C>            <C> 
Statement of Operations Data:

Revenues                          $  4,124,634     $  6,614,044     $  4,396,891    $  1,527,092   $  2,425,855

Operating expenses                $  3,018,356     $  7,207,274     $  8,493,699    $  4,530,269   $  3,192,987

Net loss                          $   (568,534)    $ (4,805,822)    $ (9,550,795)   $ (5,444,121)  $ (3,356,798)

Net loss per common share         $      (0.05)    $      (0.32)    $      (0.54)   $      (0.33)  $      (0.30)

Weighted average shares             
  outstanding                       11,491,000       14,805,000       17,629,876      16,386,166     18,927,857



                                            June 30,                       December 31,
                                     1997            1998             1997             1998
                                     ----            ----             ----             ----
Selected Balance Sheet Data:
Working Capital                   $  6,407,237     $  3,723,317     $  7,644,394    $  5,351,717
Total Assets                      $ 10,187,726     $  7,799,242     $ 10,863,715    $  9,474,987
Long Term Obligations             $    164,283     $     57,519     $    101,126    $     47,596
Redeemable Convertible
   Preferred Stock                           -                -                -    $   4,733,576
Stockholders' Equity              $  8,024,642     $  5,572,892     $  9,298,818    $   2,319,094
</TABLE>



<PAGE>10


                                   THE COMPANY

THERMOGENESIS  CORP.  designs and sells  products and devices  which utilize its
proprietary thermodynamic technology for the processing of biological substances
including  the  cryopreservation,  thawing,  harvesting  and  archiving of blood
components. Historically,  THERMOGENESIS CORP.'s primary revenues have been from
sales of blood plasma  freezers and thawers to hospitals,  blood banks and blood
transfusion  centers.  Currently,  THERMOGENESIS CORP. is manufacturing  several
categories  of  thermodynamic  devices  which are being sold to the blood plasma
industry  under FDA clearance to market in the United  States.  Other  potential
markets for  THERMOGENESIS  CORP.'s  proprietary  technology  include  surgical,
pharmaceutical,   and   industrial   applications.   Since   fiscal  year  1988,
THERMOGENESIS  CORP.  focused  its  efforts  on  research  and  development  and
refinement  of a core line of  products  for blood  banks.  Since  fiscal  1994,
THERMOGENESIS  CORP.  has  developed  new  applications  for  its  products  and
technology,  including  a  system  for  harvesting  cryoprecipitated  AHF from a
donor's  blood  plasma  for  use in the  treatment  of  hemophilia,  and by some
physicians  as a  hemostatic  agent or tissue  sealant in certain  surgical  and
medical procedures.

THERMOGENESIS  CORP.'s strategy was to develop superior blood processing devices
for the  niche  blood  processing  markets  where  new  products  could  quickly
establish   credibility  for  THERMOGENESIS   CORP.'s  Proprietary   Technology.
THERMOGENESIS  CORP.  believed that by  concentrating  its products to serve the
blood  plasma  industry,  many  customers,  such as the Red Cross or other blood
transfusion societies of various countries, would validate THERMOGENESIS CORP.'s
Proprietary  Technology  for  rapid  freezing  of  biological  substances,  more
specifically  blood plasma.  Early  products which were designed for blood banks
and hospitals,  have received  510(k)  permission to market,  and  THERMOGENESIS
CORP.  sells  either  directly  or through  its  distribution  network in the 32
countries where its products are marketed. See "Annual Report on Form 10-K."

From 1988 to 1992 THERMOGENESIS  CORP.'s products were designed to transfer heat
by causing heat transfer liquids to directly  contact plastic sealed  containers
within which  resided  various  blood  components.  Early  product  designs used
liquids  containing  chloro-flouro-carbons  ("CFC")  which  THERMOGENESIS  CORP.
phased out in the fall of 1992.  Thereafter,  THERMOGENESIS  CORP.  developed an
alternative heat transfer method which automatically  interposed a thin flexible
membrane  between  the heat  transfer  liquid and  biological  substances  which
process allowed for use of non-CFC based heat transfer liquids.

Principal  products initially  developed by THERMOGENESIS  CORP. and marketed to
hospitals,  blood banks, and blood transfusion centers consisted of freezers and
thawers for blood plasma.  THERMOGENESIS  CORP.  continued to design and develop
various freezer models and thawers for expanded applications, and these products
remain the core products of THERMOGENESIS  CORP.'s current  business.  To expand
its  market  and  product  use,  THERMOGENESIS  CORP.  changed  the focus of its
research and  development to the design of new products that would be applied to
different   applications   within  the  blood  industry,   including   surgical,
pharmaceutical   and  medical  procedures  that  utilize  freezing  and  thawing
technology as part of standard procedures. See "Annual Report on Form 10-K."


<PAGE>11



Recent Financing and Other Recent Events

In November 1998, THERMOGENESIS CORP. experienced a short-term cash shortage and
borrowed  $450,000 in the  aggregate  from  lenders,  including  $200,000 in the
aggregate from three directors of THERMOGENESIS CORP. The loans bear interest of
10% per annum, are secured  substantially by all of THERMOGENESIS CORP.'s assets
and mature on May 19,  1999.  In  addition,  the  lenders  received  warrants to
purchase  90,000 shares of common stock in the aggregate at $1.50 per share.  In
connection with the Series A preferred stock private placement,  $300,000 of the
debt was exchanged for 48,000 shares of Series A preferred  stock. The remaining
$150,000 plus interest has been repaid.

On December 11, 1998,  THERMOGENESIS  CORP.'s shareholders approved an amendment
to its  Certificate  of  Incorporation  to effect a  one-for-four  reverse stock
split. The Board is currently determining the most appropriate time to implement
the reverse stock split.

On January  14,  1999,  THERMOGENESIS  CORP.  completed a private  placement  of
1,077,540  shares  of  Series  A  Preferred  Stock,   raising  an  aggregate  of
$6,734,625,  before  commissions and direct  expenses.  Commissions of 7% of the
gross proceeds and warrants to purchase  200,000 shares of common stock at $1.70
per share  were  issued to the  placement  agent.  An  initial  closing  for the
preferred stock was held on December 31, 1998, with gross proceeds of $5,100,000
having been received.  The net proceeds from the private  placement will be used
for clinical trials of the CryoSeal Autologous Fibrin Glue System and CryoFactor
Autologous Platelet Derived Growth Factor System through an independent clinical
research organization, repayment of short-term debt and working capital.

The value assigned to the beneficial conversion feature, as determined using the
quoted  market  price of the  Company's  common  stock on the date the  Series A
preferred  stock was sold,  amounted to  $2,297,040  on December 30,  1998,  and
$1,307,700 on January 14, 1999,  which represents a discount to the value of the
Series A preferred stock.


                             SUMMARY OF THE OFFERING

THERMOGENESIS  CORP. is registering  5,677,700 shares of common stock for resale
by the selling stockholders of which 5,387,700 may be issued upon the conversion
of Series A preferred  stock and 290,000  shares may be issued upon the exercise
of warrants,  including  warrants to purchase  200,000 shares as placement agent
warrants.


                                 USE OF PROCEEDS

THERMOGENESIS  CORP.  will  receive no proceeds  for the resale of the shares of
common stock upon the conversion of the Series A preferred stock and exercise of
warrants.

<PAGE>12



                              SELLING STOCKHOLDERS

The following table identifies the Selling Stockholders, as of February 5, 1999,
and indicates certain  information known to THERMOGENESIS  CORP. with respect to
(i) any material relationship between the selling stockholders and THERMOGENESIS
CORP.  during the past three  years,  (ii) the number of shares of common  stock
held by the selling stockholders, (iii) the amount to be offered for the selling
stockholders'  account,  and  (iv)  the  number  of  shares  and  percentage  of
outstanding shares of common stock to be owned by the selling stockholders after
the sale of the common stock offered by the selling stockholders.  To the extent
required under the federal securities laws, this prospectus may be also used for
resale of common stock upon the  conversion of the Series A preferred  stock and
the exercise of the warrants. The selling stockholders are not obligated to sell
their common stock offered by this prospectus.

The table assumes that the selling  stockholders  have converted  their Series A
preferred  stock or exercised their warrants and will sell the common stock in a
secondary offering pursuant to this prospectus.

Under the Exchange Act, any person  engaged in a  distribution  of the shares of
common  stock  of  THERMOGENESIS  CORP.  offered  by  this  prospectus  may  not
simultaneously  engage in market  making  activities  with respect to the common
stock  of  THERMOGENESIS  CORP.  during  the  applicable  periods  prior  to the
commencement  of such  distribution.  In  addition,  and  without  limiting  the
foregoing,  each selling stockholder may be subject to applicable  provisions of
the Exchange Act and the rules and  regulations  thereunder  including,  without
limitation  Regulation M.  Further,  the selling  shareholders  may resell their
shares pursuant to Rule 144.

The Series A  preferred  stock and  warrants  are not  registered  or listed for
trading on the Nasdaq Stock Market or on any exchange. With regard to the shares
of common stock offered by the selling  stockholders for resale, such shares may
be sold on the Nasdaq  Stock Market or in private  transactions  at prices to be
determined   at  the  time  of  sale.   Such  shares  may  be  offered   through
broker-dealers,  acting on the selling  stockholders'  behalf, who may offer the
shares at then  current  market  prices.  Any sales may be by block  trade.  The
selling stockholders and any brokers, dealers or others who participate with the
selling  stockholders in the  distribution of such shares of common stock may be
deemed to be  "underwriters"  within the meaning of the Securities  Act, and any
commissions  or fees  received  by such  persons and any profit on the resale of
such  shares  purchased  by  such  persons  may  be  deemed  to be  underwriting
commissions  or discounts  under the  Securities  Act.  Sales may be made by all
selling  stockholders  pursuant  to the  registration  statement  of which  this
prospectus is a part.

<TABLE>
<CAPTION>


                                           Shares Beneficially Owned    Shares to be     Shares Beneficially
                                               Prior to Offering            Sold        Owned After Offering

Name of Shareholder                           Number       Percentage      Number        Number     Percentage
- -------------------                           ------       ----------      ------        ------     ----------

<S>                                         <C>                <C>      <C>            <C>                <C> 
The Kaufmann Fund, Inc.                     3,760,000(1)       17.17    2,880,000(2)   880,000            4.02

Clarion Capital Corporation                   240,000(2)        1.25      240,000(2)         0            0

Bradley Resources Company                     210,000(3)        1.10      160,000(2)    50,000            *

<PAGE>13

                                           Shares Beneficially Owned    Shares to be     Shares Beneficially
                                               Prior to Offering            Sold        Owned After Offering

Name of Shareholder                           Number       Percentage      Number        Number     Percentage
- -------------------                           ------       ----------      ------        ------     ----------


Pequot Scout Fund, L.P.                       400,000(2)        2.07      400,000(2)         0            0

Atlas II, L.P.                                336,000(2)        1.7       336,000(2)         0            0

RJ Capital, L.P.                               64,000(2)        *          64,000(2)         0            0

Philip H. Coelho TTEE Coelho Living Trust
Chief Executive Officer
3146 Gold Camp Drive
Rancho Cordova, CA 95670                      650,500(4)        3.35       60,000(5)   590,000            3.03

New England Venture Partners                  250,000(6)        1.30      250,000(6)         0            0

Carol Jacinto                                   8,000(2)        *           8,000(2)         0            0

Veron International Limited                 1,150,000(7)        5.87      400,000(2)   750,000            3.83

Victor S. Lee                                 160,000(2)        *         160,000(2)         0            0

Hung Kwong International Ltd.                  80,000(2)        *          80,000(2)         0            0

Choy Man Kin                                   40,000(2)        *          40,000(2)         0            0

BioTechnology Development Fund, LP             66,465(2)        *          66,465(2)         0            0

BioTechnology Development Fund III, LP         33,235(2)        *          33,235(2)         0            0

Hofung Holdings Limited                        80,000(2)        *          80,000(2)         0            0

Judy Yee-Yong Ling                             40,000(2)        *          40,000(2)         0            0

Xinjiang Commercial Managed Fund               40,000(2)        *          40,000(2)         0            0

Mark Sater TTEE Vigevano Retirement                                     

Benefit Scheme 1992                            20,000(2)        *          20,000(2)         0            0

Charles W. Chambers & Roberta Chambers                                                       0            0
JT TEN                                        100,000(2)        *         100,000(2)

Hubert Huckel
Director
3146 Gold Camp Drive
Rancho Cordova, CA 95670                       50,000(8)        *          10,000(9)    40,000            *

Patrick McEnany
Director
3146 Gold Camp Drive
Rancho Cordova, CA 95670                     115,829(10)        *          10,000(9)   105,829            *


<PAGE>14

                                           Shares Beneficially Owned    Shares to be     Shares Beneficially
                                               Prior to Offering            Sold        Owned After Offering

Name of Shareholder                           Number       Percentage      Number        Number     Percentage
- -------------------                           ------       ----------      ------        ------     ----------

Oscar Gruss & Son                            200,000(11)        1.05     200,000(11)         0            0

</TABLE>



Footnotes to Table

 *      Less than one percent.

(1)     Includes  warrants  to  purchase  80,000  shares  of  common  stock  and
        2,880,000 shares of common stock to be issued assuming the conversion of
        576,000 shares of Series A preferred stock.

(2)     Represents  the number of shares of common stock upon  conversion of the
        Series A preferred  stock based on a conversion  ratio of five shares of
        common stock for each share of Series A preferred stock.

(3)     Includes  warrants to purchase 10,000 shares of common stock and 160,000
        shares of common stock to be issued  assuming the  conversion  of 32,000
        shares of Series A preferred stock.

(4)     Includes options to purchase 425,000 shares of common stock owned by Mr.
        Coelho,  warrants to purchase 20,000 shares of common stock,  and 40,000
        shares of common  stock to be issued  assuming the  conversion  of 8,000
        shares of Series A preferred stock.

(5)     Includes  warrants to purchase  20,000 shares of common stock and 40,000
        shares of common  stock to be issued  assuming the  conversion  of 8,000
        shares of Series A preferred stock.

(6)     Includes  warrants to purchase 50,000 shares of common stock and 200,000
        shares of common stock to be issued  assuming the  conversion  of 40,000
        shares of Series A preferred stock.

(7)     Includes warrants to purchase 250,000 shares of common stock and 400,000
        shares of common stock to be issued upon the conversion of 80,000 shares
        of Series A preferred stock.

(8)     Includes warrants to purchase 10,000 shares of common stock and options
        to purchase 40,000 shares of common stock.

(9)     Represents shares of common stock subject to resale upon the exercise of
        warrants.

(10)    Includes warrants to purchase 10,000 shares of common stock, and options
        to purchase  40,000 shares of common stock.  Also includes 25,829 shares
        owned by Equisource Capital of which Mr. McEnany is the sole shareholder
        and  2,500  owned  by  Mr.  McEnany's  spouse.   Mr.  McEnany  disclaims
        beneficial ownership of the shares owned by his spouse.

(11)    Represents shares of common stock subject to resale upon the exercise of
        a warrant issued to the Placement Agent.


                            DESCRIPTION OF SECURITIES

Our  authorized  capital  stock  consists  of  two  classes  which  consists  of
50,000,000 shares,  $.001 par value, of common stock and 2,000,000 shares, $.001
par value,  of preferred  stock.  As of February 5, 1999,  18,930,685  shares of
common stock were  outstanding and 1,029,540  shares of Series A preferred stock
were outstanding. There are no other series of preferred stock outstanding.


<PAGE>15


Common Stock

Common stock  shareholders have full voting rights, one vote for each share held
of  record.   Subject  to  preferential  rights  of  Series  A  Preferred  Stock
shareholders   and  any  other   preferred  stock   shareholder,   common  stock
shareholders  are entitled to receive  dividends as may be declared by the Board
out of funds legally available therefor, and share pro rata in any distributions
to stockholders upon liquidation.  Common stock shareholders have no conversion,
preemptive or other subscription rights. All of the outstanding shares of common
stock are, and the shares offered hereby will be, validly issued, fully paid and
nonassessable.

Preferred Stock

As discussed below, we have one series of preferred stock designated.  The Board
is authorized to establish,  other series or designation of preferred stock with
rights, preferences, privileges, and restrictions on such stock as the Board may
determine.

Series A Convertible Redeemable Preferred Stock

We have designated 1,200,000 shares as Series A convertible redeemable preferred
stock. Each share of Series A preferred stock has the following characteristics:

Conversion.  Each Series A preferred  stock is  convertible  into five shares of
common stock at the option of holder or at THERMOGENESIS CORP.'s option provided
that the common  stock is trading at an average  price equal to or greater  than
$5.00 per share for 30 consecutive  trading days.  Each Series A preferred stock
is subject to customary anti-dilution protection.

Voting  Rights.  Provided that more than 35% of the number of Series A preferred
stock  shares sold in the private  placement  remain  outstanding,  the Series A
preferred  stock  shareholder  will be  entitled  to vote for one  director,  as
separate  class,  and approval by holders of at least a majority of the Series A
preferred  stock,  voting  together as a separate class, is required for certain
events  including  (i) any  issuance  of a new series of shares  having  rights,
preferences, or privileges with respect to liquidation preference, redemption or
dividend rights senior or equivalent to the Series A preferred  stock,  (ii) any
payment or  declaration  of any dividends  rights or any other  distribution  or
redemption  of  any  capital  stock  of  THERMOGENESIS   CORP.,  (iii)  sale  or
disposition of substantially  all of THERMOGENESIS  CORP.'s property or business
or any consolidation or merger with any entity in which  THERMOGENESIS  CORP. is
not the  survivor,  (iv) an  amendment  to  THERMOGENESIS  CORP.'s  articles  of
incorporation or bylaws,  and (v) any investments of another business  exceeding
$1 million in the  aggregate.  Unless  required  by law,  the Series A preferred
stock shareholders will be entitled to vote on all other matters with the common
stock shareholders, together as a class, on an as converted basis.

Dividends.  Each Series A preferred stock is entitled to receive  non-cumulative
dividends  at the  same  rate  and  same  time  as  any  dividends  declared  on
THERMOGENESIS CORP. common stock determined on an as converted basis.


<PAGE>16


Liquidation   Rights.   Upon   liquidation,   dissolution,   or  winding  up  of
THERMOGENESIS  CORP.,  the  holder of each  Series A  Preferred  Stock  shall be
entitled to  received a  liquidation  preference  equal to $6.25 per share which
shall  increase at the rate of 8% per share,  per year,  compounded  annually on
each  anniversary  date of the  issuance of the Series A preferred  stock before
there are any  distributions  to common  stock  shareholders.  After  payment to
Series A preferred stock of the liquidation preference as adjusted, the Series A
preferred stock shareholder  shall not be entitled to any further  distribution.
If upon any liquidation, dissolution or winding up, the assets to be distributed
among the Series A preferred stock  shareholder  shall be insufficient  for full
payment of the liquidation  preference,  then the amount to be distributed shall
be  distributed  ratably to the Series A preferred  stock  shareholders  and any
other preferred stock of equal rank.

Redemption.  After five years,  Series A preferred stock  shareholders will have
the right to require  THERMOGENESIS  CORP. to  repurchase  from such holder each
Series A preferred stock for the liquidation preference as adjusted.

Preemptive  Rights.  Each  Series  A  preferred  stock  shareholder  shall  have
preemptive  rights to purchase any new issue by THERMOGENESIS  CORP. in order to
maintain such ownership interest in THERMOGENESIS CORP.

Options

As of January 15, 1999,  THERMOGENESIS CORP. had outstanding options to purchase
a total of  1,613,450  shares of common  stock at exercise  prices  ranging from
$1.64  to  $4.50  per  share,  of  which  options  to  purchase  1,240,193  were
exercisable.  Some of these options are subject to vesting, and in general, have
a three or five year exercise  period.  See "Annual Report on Form 10-K -- Notes
to Financial Statements."

Warrants

As of January 15,  1999,  warrants to  purchase a total of  2,524,201  shares of
common stock were  outstanding with exercise prices ranging from $2.40 to $3.885
per share, all of which were exercisable. Included in the number of warrants are
warrants to purchase  290,000 shares of common stock which are subject to resale
by this  prospectus.  See  "Annual  Report  on Form  10-K -- Notes to  Financial
Statements."

Registration Obligation

THERMOGENESIS CORP. has agreed to register for resale the shares of common stock
upon the  conversion  of the Series A  preferred  stock and the  exercise of the
warrants.  In the event the  registration  statement  registering for resale the
shares of common  stock is not declared  effective  within 120 days from January
14,  1999,  which is the closing  date of the private  placement of the Series A
preferred  stock,  the aggregate  number of shares of common stock issuable upon
the conversion of the Series A preferred stock shall be increased by 5% for each
additional 30 days the registration statement is not declared effective.


<PAGE>17


                     CERTIFICATE OF INCORPORATION AND BYLAWS

Our Amended and  Restated  Certificate  of  Incorporation  provide  that we will
indemnify  directors and officers of  THERMOGENESIS  CORP. to the fullest extent
permitted  by  Delaware  Law.   Further,   our  bylaws  provide   authority  for
THERMOGENESIS  CORP.  to maintain a liability  insurance  policy  which  insures
directors  or  officers  against  any  liability  incurred  by them  in  serving
THERMOGENESIS CORP.

Insofar as indemnification  for liabilities arising under the Securities Act may
be permitted to directors,  officers and  controlling  persons of  THERMOGENESIS
CORP. pursuant to the foregoing  provisions,  or otherwise,  THERMOGENESIS CORP.
has been advised that in the opinion of the Commission such  indemnification  is
against  public  policy as expressed in the  Securities  Act and is,  therefore,
unenforceable.  In the  event  that a claim  for  indemnification  against  such
liabilities (other than the payment by THERMOGENESIS  CORP. of expenses incurred
or paid by a director,  officer or controlling person of THERMOGENESIS  CORP. 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,  THERMOGENESIS  CORP. will, unless in the opinion of its counsel the
matter  has  been  settled  by  controlling  precedent,  submit  to a  court  of
appropriate  jurisdiction  the question  whether such  indemnification  by it is
against  public  policy as  expressed  in the Act and will be  governed by final
adjudication.


                                 TRANSFER AGENT

The transfer agent for our common stock is American Securities Transfer & Trust,
Inc., 938 Quail Street, Suite 101, Lakewood, Colorado 80215-5513.


                                     EXPERTS

The  financial  statements of  THERMOGENESIS  CORP.  appearing in  THERMOGENESIS
CORP.'s  Annual  Report (Form 10-K) for the year ended June 30, 1998,  have been
audited by Ernst & Young LLP, independent auditors, as set forth in their report
thereon (which contain an explanatory paragraph describing conditions that raise
substantial  doubt about the Company's ability to continue as a going concern as
described  in  Note  1  to  the  financial   statements)  included  therein  and
incorporated  herein by reference.  Such financial  statements are  incorporated
herein by  reference in reliance  upon such report  given upon the  authority of
such firm as experts in accounting and auditing.


                                  LEGAL MATTERS

The validity of the shares of common stock  offered by the selling  stockholders
through this  prospectus  will be passed upon for us by David C. Adams,  General
Counsel and Vice President of Business Development. Mr. Adams beneficially owned
options to acquire 120,000 shares of common stock as of February 5, 1999.


<PAGE>18


                       GLOSSARY OF CERTAIN TECHNICAL TERMS


510(k):  formal  notification  to the Food and Drug  Administration  ("FDA")  by
manufacturers  of Class I or Class II devices to obtain  clearance to market the
medical  device.  The  device  must  be  substantially   equivalent  to  devices
manufactured prior to 1976.

AUTOLOGOUS:  autogenous; related to self; originating within an organism itself,
as an autograft or autotransfusion.

CLASS II MEDICAL  SYSTEM:  those  devices for which general  controls  alone are
insufficient  to  assure  safety  and  effectiveness  and  for  which  mandatory
performance standards must be developed by the FDA.

COAGULATION:  (1) the process of clot formation;  (2) in surgery, the disruption
of  tissue  by   physical   means  to  form  an   amorphous   residuum,   as  in
electrocoagulation and photocoagulation.

CORE LINE PRODUCTS:  (1) device for the  ultra-rapid  cryopreservation  of human
blood plasma; (2) portable device for the ultra-rapid  cryopreservation of human
blood  plasma;  (3) device for the rapid  thawing of frozen  plasma for hospital
patient care;  (4) device for the hermetic  sealing of blood tissue  containers;
(5) "smart"  blood  collection  monitor;  (6) Vial  BioArchiveTM  System for the
Japanese Red Cross.

CRYOPRECIPITATE:  any precipitate that results from cooling,  as cryoglobulin or
antihemophilic factor.

CRYOPRECIPITATED AHF: A preparation of antihemophilic  factor, which is obtained
from a single unit of plasma collected and processed in a closed system.

CRYOPRESERVATION:  the  maintaining of the viability of excised tissue or organs
by storing at very low temperatures.

CRYOSEALTM: system for harvesting fibrinogen-rich cryoprecipitate from a donor's
blood plasma,  a blood  component that is currently  licensed by the FDA for the
treatment of clotting protein deficient patients.

DEWAR:  container  which keeps its  contents  at a constant  and  generally  low
temperature by means of two external walls between which a vacuum is maintained.

FACTOR VIII:  antihemophilic  factor (AHF): a relatively  storage-labile  factor
participating only in the intrinsic pathway of blood coagulation.  Deficiency of
this factor, when transmitted as a sex-linked  recessive trait, causes classical
hemophilia  (hemophilia A). More than one molecular form of this factor has been
discovered.  Called also antihemophilic globulin (AHG) and antihemophilic factor
A.

FACTOR XIII: fibrin  stabilizing  factor (FSF): a factor that polymerizes fibrin
monomers so that they become stable and insoluble in urea,  thus enabling fibrin


<PAGE>19


to form a firm  blood  clot.  Deficiency  of this  factor  produces  a  clinical
hemorrhagic  diathesis.  Called also fibrinase and Laki-Lorand factor (LLF). The
inactive  form is also  known  as  protransglutaminase  and the  active  form as
transglutaminase.

FIBRONECTIN: an adhesive glycoprotein:  one form circulates in plasma, acting as
an opsonin;  another is a cell-surface  protein which mediates cellular adhesive
interactions.  Fibronectins  are  important  in  connective  tissue,  where they
cross-link to collagen, and they are also involved in aggregation of platelets.

HEMATOLOGY: that branch of medical science which treats of the morphology of the
blood and blood forming tissues.

HEMOSTATIC:  (1) checking the flow of blood;  (2) an agent that arrests the flow
of blood.

MACULAR:  pertaining to or characterized by the presence of macules;  pertaining
to the macula retinae.

N2 BIOARCHIVE:  system for controlled  rate freezing,  storage and retrieval and
inventory   management   of   biological   samples  which  require  LN2  storage
temperatures, such as placental, stem and progenitor cells.

PIPELINE  PRODUCTS:  (1) CryoSealTM  System,  thermodynamic  processor;  (2) LN2
BioArchiveTM  System,  computerized LN2 dewar with robotic arm; (3) CryoFactorTM
System,   thermodynamic   processor;   (4)  MicroSealantTM   System,  bench  top
thermodynamic processor; (5) CryoPlateletTM System, thermodynamic processor.

PLATELET  DERIVED  GROWTH  FACTOR  (PDGF):  a substance  contained  in the alpha
granules  of  platelets  and  capable  of  inducing  proliferation  of  vascular
endothelial cells, vascular smooth muscle cells, fibroblasts and glia cells; its
action contributes to the repair of damaged vascular walls.

PROGENITOR: a parent or ancestor.

THERMOLABILE:  easily altered or decomposed by heat.

VON WILLEBRAND'S FACTOR: the attribute of Factor VIII necessary for the adhesion
of  platelets to vascular  elements.  Deficiency  of this factor  results in the
prolonged bleeding time seen in von Willebrand's disease.



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