THERMOGENESIS CORP
424B1, 2000-04-05
LABORATORY APPARATUS & FURNITURE
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                                                                 PROSPECTUS


                                3,988,532 Shares

                               THERMOGENESIS CORP.

                                  Common Stock


        All of the shares of common  stock of  THERMOGENESIS  CORP.  offered are
being sold by the selling stockholders listed in this Prospectus.  Of the shares
being sold by the selling  stockholders,  up to  3,503,970  shares may be resold
upon the conversion of Series B convertible  preferred  stock, and up to 484,562
shares may be resold upon the  exercise of  outstanding  warrants.  The Series B
preferred  stock and  warrants  were issued in private  placements  completed in
December 1999 and January 2000. We will not receive any proceeds from the resale
of any common stock by the selling stockholders.

        Our common  stock is traded and  listed on The Nasdaq  SmallCap  Market,
under the symbol "KOOL." On March 31, 2000, the last reported sale price for the
common  stock was  $2.625.  There is no market for either the Series B preferred
stock or the warrants.


          INVESTING IN OUR COMMON STOCK INVOLVES A HIGH DEGREE OF RISK.
                          SEE "RISK FACTORS" AT PAGE 4.
                         -------------------------------

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 March 31, 2000.


<PAGE>2


                               PROSPECTUS SUMMARY


        This Prospectus contains or incorporates  "forward-looking  statements",
which include statements about our business strategy,  our growth strategy,  our
product  development  and  marketing  efforts,  and  anticipated  trends  in our
business,  which are not historical facts. We may also make additional  forward-
looking statements from time to time in filings that we make with the Securities
and  Exchange   Commission.   When  we  use  words  like  "believe,"   "expect,"
"anticipate," "project," and similar expressions, this should alert you that the
statement is  forward-looking.  Forward-looking  statements speak only as of the
date made,  based  largely on  expectations.  These  expectations  are generally
subject  to a number  of  risks  and  uncertainties,  some of  which  cannot  be
predicted or  quantified,  and which are beyond our control.  Future  events and
actual results may differ materially from the anticipated  results expressed in,
contemplated  by, or underlying our  forward-looking  statements.  Statements in
this  Prospectus,   and  in  documents   incorporated  by  reference  into  this
Prospectus,  including  those set forth in the caption "Risk  Factors"  describe
factors,  among others, that could contribute to or cause differences.  In light
of these  risks  and  uncertainties,  we can not give  any  assurances  that the
forward-looking  information  will in fact  transpire or prove to be accurate in
the future.

Our Business

        We are 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 cells for the treatment of human disease.
Our  technology  platforms are designed to  micro-manufacture  biopharmaceutical
drugs  from a single  donation  of blood,  in  contrast  to the  manufacture  of
biopharmaceutical  drugs by using "pools" of blood from thousands of donors,  or
by using expensive technology.

        In February of 1999,  following FDA 510(k) clearance of the CryoSeal AHF
System  which  micro-  manufactures  cryoprecipitated   anti-hemophilic  factors
(Cryoprecipitated AHF) from single units of plasma for the intravenous treatment
of  hemophiliacs,  we  prepared to initiate  clinical  trials for an  autologous
fibrin  glue (A.G.)  indication  for the  CryoSeal  Platform  technology.  These
activities include: hiring C L McIntosh as the Clinical Research Organization to
lead the clinical  trial effort and  preparing  the initial  draft of a clinical
protocol for a FDA approved  pivotal trial  utilizing  the Company's  autologous
fibrin glue as a hemostatic agent in liver resectioning surgery; selecting sites
and site  investigators;  forming a steering  committee of physicians and a data
monitoring  safety board;  and beginning  preparation  for  pre-clinical  animal
studies and final design review for the product. For further discussion, see our
"Annual Report on Form 10-K -- Business."

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;


<PAGE>3


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; and

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

Risk Factors

For a  discussion  of  considerations  relevant to an  investment  in our common
stock, see the section entitled "RISK FACTORS" beginning on page 4.

The Offering

Common Stock Outstanding Before the Offering..........................21,188,262
Common Stock Offered by Selling Stockholders (a).......................3,988,532
Common Stock Outstanding After the Offering (a).......................25,176,794
Use of Proceeds............................We will not receive any proceeds from
                                           the  resale  of  common shares by the
                                           Selling Stockholders. We will receive
                                           proceeds   if   certain   outstanding
                                           warrants are exercised. Any proceeds
                                           from the exercise of warrants will be
                                           used for working capital.
Nasdaq SmallCap Symbol......................................................KOOL

(a) Assumes that holders of Series B preferred  stock have converted such shares
into a maximum of 3,988,532  shares of common stock in the  aggregate  including
392,040  shares of common stock that may be issued as  dividends  for a two year
period and that  warrant  holders  have  exercised  their  warrants  to purchase
484,562 shares of common stock in the aggregate.  The number of shares of common
stock that is being  registered by this  registration  statement is based on the
sum of (a)  shares  that may be  issued  upon  the  conversion  of the  Series B
preferred stock at the conversion price of $2.2719; and (b) accrued dividends on
the Series B  preferred  stock for a period of two years  which are added to the
conversion  value of the preferred  stock  multiplied by 175%; and (c) shares of
common stock that may be issued upon the exercise of warrants.

<PAGE>4

                                  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 our common stock.
Prospective  investors  should also  consider  the  following  before  making an
investment decision.

     We Have  Incurred  Net Losses  Since Our  Inception  and  Expect  Losses to
Continue.  Except for net income of $11,246  for fiscal  1994,  we have not been
profitable since our inception.  For the fiscal year ended June 30, 1999, we had
a net loss of  $6,098,904,  and an  accumulated  deficit  at June 30,  1999,  of
$30,745,189.  The report of independent auditors on our June 30, 1999, financial
statements  include an  explanatory  paragraph  indicating  there is substantial
doubt about our ability to continue as a going concern. For the six months ended
December 31, 1999, we had an unaudited net loss of  $3,134,000.  Although we are
executing on our business plan to market launch new products,  continuing losses
will impair our ability to fully meet our  objectives  for new product sales and
will further impair our ability to meet continuing  operating  expenses that may
result in staff reductions and curtailment of clinical trials currently planned.
See Risk Factor entitled "If We Are Unable to Raise Funds to Finance Our Growth,
Your Investment Could Be Adversely Affected" below.

     If We Are Unable to Raise  Funds to Finance  Our  Growth,  Your  Investment
Could Be Adversely Affected.  Historically,  we have had to seek capital for our
growth  and  operations   due  to  lack  of  revenues.   Based  on  proceeds  of
approximately  $4.0 million  received in our most recent private  placement,  we
believe  we will  have  sufficient  working  capital  for our 2000  fiscal  year
operations.  However, if actual sales do not meet expectations, or marketing and
production costs increase  significantly,  we will need additional  financing to
complete and implement our long-term  business  objectives.  Further,  delays in
obtaining   required   governmental   approvals   for,  or  additional   testing
requirements  prior for,  marketing  our new  products  will result in decreased
revenues and increased costs that may require us to seek  additional  financing.
We are  attempting  to  obtain a bank  line of credit  secured  by our  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 we are
unable to obtain a bank loan, additional equity financing will be required which
will have the effect of diluting the ownership of existing stockholders.

     Our  Failure to  Develop  New  Products  Will  Adversely  Effect Our 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
this segment of the blood plasma market to have limited growth, new products for
the biotechnology market will have to be successfully developed and marketed for
future growth. We are currently focusing on developing and marketing novel blood
processing  systems  such as: (1) the  CryoSeal(TM)  AHF  System  for  automated
production of  Cyroprecipitated  AHF; (2) the CryoSeal(TM) A.F.G. System for the
automated production of autologous blood components used as a surgical glue; (3)
a  MicroSeal(TM)  A.F.G.  system;  (4) a CryoFactor  APDGF System for  automated
concentration of growth factors from blood;  and (5) the  BioArchive(R) a system
for collecting,  processing,  controlled-rate freezing, and inventory management
of blood products in liquid nitrogen utilizing disposable  containers.  Although
these  products  use  technology  related  to our  core  competence,  they  also
represent  a  departure  from our former core blood  plasma  business.  Further,
although we have had discussions  with experts in areas of application for these
products, these products are still in their development and/or initial market

<PAGE>5

phase.  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.

        If We Fail to Maintain Our Nasdaq Listing,  Liquidity of Your Investment
Will Be Adversely Affected. The Nasdaq SmallCap Market on which our common stock
is traded has established certain maintenance listing  requirements that must be
satisfied in order for a company's  shares to continue to be listed.  Currently,
our  common  stock  meets  the  Nasdaq  SmallCap  Market   maintenance   listing
requirements.  However,  if we  continue  to incur  losses,  this may affect our
ability to meet the net tangible assets of $2 million requirement or minimum Bid
Price of $1 per share  requirement  as set by the  Nasdaq  SmallCap  Market.  We
cannot  assure  that we will always be able to meet the Nasdaq  SmallCap  Market
listing  requirements in the future.  Failure to meet the Nasdaq SmallCap Market
listing  requirements could result in the delisting of our common stock from the
Nasdaq SmallCap Market which may adversely affect the liquidity of our shares.

        Our  Business is Heavily  Regulated,  Resulting  in  Increased  Costs of
Operations  and  Delays in  Product  Sales.  Most of our  products  require  FDA
clearance to sell in the U.S. and will require approval from comparable agencies
to sell our products in foreign countries. These approvals may limit the U.S. or
foreign  market in which our products may be sold or  circumscribe  applications
for U.S. or foreign  markets in which our products may be sold.  The majority of
our products  related to freezing blood components are currently exempt from the
requirement to file a 510(k) premarket application,  and our CryoSeal AHF System
received  clearance from the FDA in February 1999.  These products are currently
marketed and sold worldwide.  Further,  our products must be manufactured  under
principals of our quality system for continued Certificate European (CE) marking
that allows our products to be marketed and sold in Europe, which are similar to
the quality  system  regulations  of both the FDA and  California  Department of
Health. Failure to comply with those quality system requirements and regulations
may subject the Company to delays in production while it corrects any deficiency
found by  either  the FDA or the  State of  California  during  any audit of our
quality  system.  With  limited  working  capital  and  resources,  there  is no
assurance  that we will  not be  found  to be out of  compliance,  resulting  in
warning letters or, in worst case,  temporary shut down of  manufacturing  while
the  non-conformances  are  rectified.  See our  "Annual  Report on Form 10-K --
Business -- Regulation of Business."

        Influence By the Government and Insurance Companies May Adversely Impact
Sales of Our  Products.  Our business may be  materially  affected by continuing
efforts by government,  and third party payors such as medicare,  medicaid,  and
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., we expect 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 our  products.  To date, we are not aware of any
direct impact on our pricing or product sales due to such efforts by governments
to contain  healthcare  costs,  and we do not anticipate any immediate impact in
the near future.

        Our 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

<PAGE>6

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 us.

        Failure to Protect Our Trade Secrets May Assist Our Competitors.  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  our  know-how,  or
independently  develop the same or similar  technology.  We prepare and file for
patent protection on aspects of our technology which we think will be integrated
into final products early in design phases, thereby limiting the potential risks

        Competition in Our Industry is Intense and Will Likely Involve Companies
With Greater Resources Than We Have. We hope to develop a competitive  advantage
in the medical applications of our products, but there are many competitors that
are  substantially  larger  and who  possess  greater  financial  resources  and
personnel than we have. Our current principal market is the users of ultra-rapid
blood plasma freezing and thawing equipment.  There are four companies that sell
freezers  to the blood  plasma  freezing  industry  which are larger and possess
greater  financial and other  resources than we do. The CryoSeal System may face
competition  from major plasma  fractionaters  that  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.

        We Have a Limited  Marketing and Sales Force for New Products  Which May
Delay Our Goal of Increased Sales Levels. We currently sell our existing medical
devices through a direct sales and marketing force, and our foreign distribution
network. Although we have entered into exclusive distribution agreements for the
area  of the  two new  platform  products  and we  continue  to  seek  strategic
partners, there are no assurances that the distributors will produce significant
sales of the systems.

        Our Lack of Production  Experience May Delay Producing Our New Products.
We currently  manufacture  our blood plasma  thawers and freezers  that are less
technologically   sophisticated  products.   Although  we  have  redesigned  our
manufacturing  facility to accommodate  the  BioArchive  System and the CryoSeal
System,  we do not have  significant  experience  in  manufacturing  those  more
complex medical devices or in the manufacture of disposables. Furthermore, there
can be no assurance that our current resources and manufacturing  facility could
handle a significant  increase in orders for either the BioArchive System or the
CryoSeal  System.  If we are unable to meet demand for sales of the new systems,
we 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 us and our 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 our profitability.

        Our New Products Are at Initial Market Introduction, and We Are Not Sure
the Market  Will  Accept  Them.  The market  acceptance  of our 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 our ability to adequately train technicians on

<PAGE>7

how to use the  CryoSeal  System  and  the  BioArchive  System.  Even if our new
product  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 our long
term business,  financial condition,  and results of operation.  See our "Annual
Report on Form 10-K --  Description  of Business" and "Risk Factors -- Uncertain
Availability of Third-Party Reimbursement."

     Failure  to Keep Our  Senior  Management  Team  May  Adversely  Affect  Our
Operations.  We are  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 our
operations.  We have obtained key man life insurance  covering Mr. Coelho in the
amount of  $2,000,000  as some  protection  against  this risk.  See our "Annual
Report on Form 10-K-- Description of the Business -- Employees."

     Product  Liability and  Uninsured  Risks May  Adversely  Affect  Continuing
Operations.  We may be liable if any of our products cause 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 that 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.

     Our Products May Contain  Software  Defects Which Will Adversely Affect Our
Products and Sales.  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 us and our 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 our business, financial condition, and results of operations.

     The Market Price for Our Common Stock May Fall if Selling  Stockholders  or
Other  Security  Holders  Sell A  Substantial  Amount of Their  Stock.  Under an
agreement  with the holders of the Series B preferred  stock,  we have agreed to
register for resale by this Prospectus  shares of common stock to be issued upon
the  conversion  of the Series B  preferred  stock and upon the  exercise of the
warrants. By contract,  we are required to register  approximately 15.84% of our
outstanding common stock, as adjusted,  related to the Series B preferred stock.
We have also  registered  additional  shares of common  stock that may be issued
upon  conversion of the Series B convertible  preferred stock if we elect to add
accrued dividends to the conversion value of the Series B convertible  preferred
stock.  Further,  if a  substantial  decline in the average  market price of our
common stock were to occur,  the conversion  price would be set at a lower price
and  additional  shares may also be issued.  Because the  trading  price for our
common stock may be affected by the number of shares  available for resale,  the
market  price of our  common  stock  could  drop as a result of sales of a large
number of shares of our common stock in the market after this  offering,  or due
to the perception that such sales could occur.

<PAGE>8

        We May Have to Register Additional Shares of Common Stock Underlying the
Series B Preferred  Stock Which May  Adversely  Affect the Market  Price for Our
Common Stock. As previously disclosed,  we have agreed to register for resale by
this  Prospectus  shares of common stock to be issued upon the conversion of the
Series B preferred stock, including accrued dividends,  and upon the exercise of
the warrants. In addition, the registration rights agreement with the holders of
Series B preferred  stock required that the Company  register an amount equal to
175% of the  convertible  amount  at  closing  to  cover  future  contingencies,
including possible repricing of the conversion rate. The shares being registered
for resale represent approximately 15.84% of the outstanding shares as adjusted.
We believe that we have registered a sufficient number of shares of common stock
underlying  the Series B preferred  stock through this  registration  statement.
However,  because the Series B preferred  stock contains a conversion  provision
that is subject to readjustment, a continued decrease in the price of our common
stock may require us to register  additional  shares of common stock  underlying
the Series B preferred stock. The additional  issuance of these shares of common
stock and their  subsequent  sale could result in a substantial  decrease in the
price for our common stock.

        We Could Be Required to Redeem Our Series B Convertible  Preferred Stock
at a Premium Which Would Require a Large Expenditure of Capital and Could Have a
Material Adverse Affect on Our Financial Condition.  The holders of our Series B
convertible  preferred  stock  have the  right to force us to  repurchase  their
Series B convertible  preferred  stock at a premium if the Company takes certain
action,  deemed to be solely within the Company's  control such as,  causing the
Company to be delisted from the Nasdaq  Market,  or taking other defined  action
detrimental  to  the  Series  B  preferred  stockholders.  See  "Description  of
Securities"  herein. The repurchase of our Series B convertible  preferred stock
would  require a large  expenditure  of capital  and we may not have  sufficient
funds to satisfy the redemption. In addition, you could face further dilution of
your  ownership  percentage  as a result of a decline in the market price of our
common  stock or in the  event of  certain  defaults  which  would  result in an
increase in the number of shares of common stock issuable upon conversion of the
Series B convertible  preferred stock. Any such event could adversely affect the
price of our stock  and our  ability  to raise  additional  capital.  We have no
intention of taking action that would require such an event.

        We Do Not Pay  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. The Series B convertible preferred stock carries a mandatory
6% dividend,  paid quarterly,  out of funds legally available.  At our election,
that dividend may be accrued to the conversion  value of that series of stock in
lieu of any cash payment. With our current cash needs, we do not anticipate that
the dividend will be paid in cash and,  therefore,  additional  shares of common
stock may be issued upon  conversion.  Those shares have also been registered in
this Prospectus. See "Description of Securities" herein.

        The  Conversion  Price of the  Series B  Preferred  Stock is  Subject to
Readjustment  That May  Adversely  Affect the Market Price For a Share of Common
Stock. The Series B preferred stock may be converted into shares of common stock
at $2.2719 per share. However, commencing on June 22, 2000, the conversion price
will be adjusted on such date and every six months  thereafter  to be the lesser
of (a) 130% of the fixed  conversion  price of $2.2719 or (b) 90% of the average
market price for the ten days prior to such adjustment.  In a declining  market,
this  conversion  feature  may have the effect of creating  additional  downward
pressure on the price of our common stock.

<PAGE>9

        The  Holders  of the Series B  Preferred  Stock May  Deliver  Registered
Shares of Common Stock Against Short Positions  Which May Put Downward  Pressure
on the  Price  of a Share of Our  Common  Stock.  The  holders  of the  Series B
preferred  stock may deliver  registered  common stock against a short position.
Because the conversion  price represents a discount of the current trading price
of a share of common  stock,  a large  number  of sales of  common  stock by, or
coverage of a large short  position  by, the  Selling  Stockholder  will have an
adverse  effect  on the  price of our  common  stock.  The  Series  B  preferred
stockholders  have  agreed  that  they  will  not  engage  in  any  open  market
transactions in our securities, including any short sales, during the 20 trading
day period prior to any conversion price reset date.

                          SUMMARY FINANCIAL INFORMATION

        The  following  summary   information  is  derived  from  the  financial
statements included in our Annual Report on Form10-K/A-1 for the year ended June
30, 1999, as amended on March 9, 2000, and Quarterly Report on Form 10-Q for the
quarter ended December 31, 1999, 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 Ended
                                            For the Year Ended June 30,                          December 31,

                                     1997              1998               1999              1998             1999
                                     ----              ----               ----              ----             ----

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

Revenues                             $6,614,044         $4,396,891        $5,004,890        $2,426,000       $2,260,000

Operating expenses                   $7,207,274         $8,493,699        $6,859,093        $3,193,000        $2,951,00

Net loss                            $(4,805,822)       $(9,550,795)      $(6,098,904)      $(3,356,000)     $(3,134,000)

Basic and diluted net loss per          $(0.32)            $(0.54)           $(0.52)           $(0.30)          $(0.16)
common share

Weighted average shares              14,805,000         17,629,876        19,242,310        18,927,857       20,920,935
outstanding

</TABLE>

<TABLE>
<CAPTION>


                                                    June 30,                          December 31,

                                             1998             1999              1998              1999
                                             ----             ----              ----              ----
<S>                                    <C>             <C>                 <C>               <C>
Selected Balance Sheet Data:

Working Capital                          $3,665,798       $5,054,940        $5,351,717        $5,932,000

Total Assets                             $7,799,242       $8,133,264        $9,474,987        $8,568,000

Total Liabilities                        $2,226,350       $1,414,620        $2,422,317        $1,270,000

Stockholders' Equity                     $5,572,892       $6,718,644        $2,319,094        $7,298,000

</TABLE>

<PAGE>10

                               THERMOGENESIS CORP.

        We design and sell products and devices  which  utilize our  proprietary
thermodynamic technology for the processing of biological substances,  including
the cryopreservation,  thawing,  harvesting,  and archiving of blood components.
Historically, our primary revenues have been from sales of blood plasma freezers
and thawers to hospitals, blood banks, and blood transfusion centers. Currently,
we are manufacturing  several categories of thermodynamic devices that are being
sold to the blood plasma  industry  under FDA  clearance to market in the United
States. Other potential markets for our proprietary technology include surgical,
pharmaceutical,  and industrial applications. Since fiscal year 1998, we focused
our  efforts  on  research  and  development  and  refinement  of a core line of
products for blood banks.  Since fiscal 1994, we have developed new applications
for  our   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.

        Our strategy has been to develop superior blood  processing  devices for
the niche blood  processing  markets where new products could quickly  establish
credibility for our proprietary technology. We believe that by concentrating our
products to serve the blood plasma  industry,  many  customers,  such as the Red
Cross or other blood transfusion societies of various countries,  would validate
our  proprietary  technology for rapid freezing of biological  substances,  more
specifically  blood  plasma.  Early  products  were designed for blood banks and
hospitals and received 510(k)  permission to market,  and we sell those products
either  directly or through our  distribution  network in the 32 countries where
our products are marketed.  See our "Annual  Report on Form 10-K. -- Description
of the Business -- Distribution Channels."

        From 1988 to 1992,  our  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 we phased out in the fall
of 1992.  Thereafter,  we 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 us and marketed to hospitals,
blood banks, and blood transfusion centers consisted of freezers and thawers for
blood plasma. We have continued to design and develop various freezer models and
thawers for expanded  applications,  and these products remain the core products
of our current  business.  To expand our market and product use, we have changed
the focus of our 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 our "Annual  Report on
Form 10-K."

Our History

        Our core expertise lies in the technical  fields of  thermodynamics  and
cryopreservation,  technologies  that we initially applied to the development of
ultra-rapid freezers and thawers,  which are currently being sold to blood banks
and hospitals in 32 countries  throughout the world. Until the fourth quarter of
fiscal year 1998, our revenues had been principally derived from these products.
Following four years of intensive research and development, we began shipping in
the  second  quarter  of  fiscal  year 1998 our new platform product called  the

<PAGE>11

BioArchive(R)  System.  The BioArchive  System is a  computer-controlled  liquid
nitrogen    platform   with   dedicated    disposables   for   the   collection,
cryopreservation,  and  archive of blood and blood  components.  The  BioArchive
System is used  internationally and in the U.S. as part of a National Heart Lung
and Blood Institute study to process,  cryopreserve,  and archive  hematopoietic
stem and progenitor  cells sourced from  placental cord blood.  These stem cells
are then used to  reconstitute  the immune  system of  patients  suffering  from
leukemia,  lymphoma,  diverse inherited anemias, or hypoproliferative  stem cell
disorders.  We have entered into a period of rapid transformation as we begin to
manufacture and market micro-manufacturing  systems which may generate recurring
revenues from the ongoing sale of high margin blood processing disposables.

        Our  strategy  is to  utilize  our two new  technology  platforms  - the
BioArchive  Platform and the  CryoSeal_  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.  Currently  the Company is
aggressively  pursuing worldwide strategic partners in an effort to maximize the
value of its new technology platforms.

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

Recent Financing and Other Recent Events

        On  December  22,  1999,  and  January 4, 2000,  we  completed a private
placement of 4,040 shares of Series B convertible  preferred  stock,  raising an
aggregate of $4,040,000,  before direct  expenses.  Warrants to purchase 484,562
shares of common stock at an exercise price of $2.73 per share were also issued.
The net proceeds from the private  placement are being used for general  working
capital.  Under the terms of the private placement,  we are required to register
for  resale the  common  shares  underlying  the  Series B  preferred  stock and
warrants.

                             SUMMARY OF THE OFFERING

        We are  registering  3,988,532  shares of common stock for resale by the
selling  stockholders of which a maximum of 3,503,970  shares may be issued upon
the conversion of Series B preferred stock,  including  accrued  dividends,  and
484,562 shares may be issued upon the exercise of warrants.

                                 USE OF PROCEEDS

        We will  receive  no  proceeds  from the  resale of the shares of common
stock by the selling  stockholders  issued upon the  conversion  of the Series B
preferred stock. We will, however,  receive proceeds if the selling stockholders
pay cash to exercise their warrants.  Those  proceeds,  if any, will be used for
general working capital.

                              PLAN OF DISTRIBUTION

        The selling stockholders,  their pledgees, donees, transferees, or other
successors  in interest may from time to time offer and sell all or a portion of
the  shares in  transactions  on the  Nasdaq  SmallCap  Market,  or on any other
securities  exchange or market on which the common stock is listed or traded, in
negotiated  transactions  or otherwise,  at prices then prevailing or related to
the then-current market price or at negotiated prices. The selling  stockholders
or their pledgees, donees, transferees, or other successors in interest may sell

<PAGE>12

their shares directly or through agents or broker-dealers acting as principal or
agent,  or in  block  trades  or  pursuant  to a  distribution  by one  or  more
underwriters on a firm commitment or best-efforts basis. To the extent required,
the names of any agent or broker-dealer and applicable  commissions or discounts
and any other required  information with respect to any particular offer will be
set  forth  in an  accompanying  Prospectus  supplement.  Each  of  the  selling
stockholders  and their  pledgees,  donees,  transferees or other  successors in
interest  reserves  the  right to  accept or  reject,  in whole or in part,  any
proposed purchase of the shares to be made directly or through agents.

        In connection with distributions of the shares, any selling  stockholder
may enter into hedging  transactions with  broker-dealers and the broker-dealers
may engage in short sales of the shares in the course of hedging  the  positions
they assume with the selling stockholder.  Any selling stockholder also may sell
the shares short and deliver the shares to close out such short  positions.  See
"Risk Factors-The Holders of the Series B Preferred Stock May Deliver Registered
Shares of Common Stock Which May Put Downward Pressure on the Price of the Share
of Common  Stock.  Any selling  stockholder  also may enter into option or other
transactions with  broker-dealers that involve the delivery of the shares to the
broker-dealers,  which may then resell or otherwise  transfer  such shares.  Any
selling  stockholder  also may loan or pledge the shares to a broker-dealer  and
the  broker-dealer  may sell the shares so loaned or upon a default  may sell or
otherwise  transfer the pledged  shares.  These  activities are mitigated by the
Series  B  preferred  stock  purchase  agreement  between  us and the  Series  B
convertible  preferred  stockholders which prohibits trading in our common stock
by the Series B  preferred  stockholders  during  the period of 20 trading  days
prior to when the conversion price is subject to periodic adjustment.

        The selling  stockholders,  any  agents,  dealers or  underwriters  that
participate with the selling  stockholders in the resale of the shares of common
stock and the pledgees,  donees,  transferees or other successors in interest of
the selling  stockholders may be deemed to be "underwriters"  within the meaning
of the Securities  Act, in which case any  commissions  received by such agents,
dealers or underwriters and a profit on the resale of the shares of common stock
purchased by them may be deemed underwriting  commissions or discounts under the
Securities Act.

        There is no assurance that the selling stockholders will sell any or all
of the shares.

        Pursuant to registration rights agreements between us and certain of the
selling  stockholders,  we have  agreed to pay all  expenses  of the Company and
selling  stockholders  incurred  in the  registration  of the shares  other than
brokerage commissions incurred by the selling stockholders.

        In addition to selling  their  common stock under this  Prospectus,  the
selling stockholders may:

        o      transfer  their common stock in other ways not  involving  market
               makers  or  established  trading  markets,   including  by  gift,
               distribution, or other transfer; or

        o       sell their common stock under Rule 144 of the Securities Act.

                              SELLING STOCKHOLDERS

        The following table identifies the selling  stockholders,  as of January
20, 2000, and indicates certain  information known to us with respect to (i) the
number of shares of common  stock  held by the  selling  stockholders,  (ii) the
amount to be offered for the selling stockholders' account, and (iii) the number
of shares and  percentage of  outstanding  shares of common stock to be owned by

<PAGE>

the  selling  stockholders  after the sale of the  common  stock  offered by the
selling  stockholders.  The selling stockholders are not obligated to sell their
common stock offered by this Prospectus.

        The  number  of shares  listed  under  "Shares  to be Sold" in the table
assumes that the selling  stockholders  have converted  their Series B preferred
stock or exercised  their warrants into the maximum  number of shares  currently
permitted  and will sell all common shares in a secondary  offering  pursuant to
this Prospectus.

        Under the Exchange  Act,  any person  engaged in a  distribution  of the
shares of our common stock  offered by this  Prospectus  may not  simultaneously
engage in market making  activities  with respect to our common stock 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 B convertible preferred stock and warrants are not registered
or listed for trading on the Nasdaq Stock Market or on any exchange.

        The shares shown as owned and offered by Advantage Fund II Ltd., by Koch
Investment  Group  Limited,  and  by  Clarion  Capital  Corporation  under  this
Prospectus  may be issued  upon  conversion  of Series B  convertible  preferred
stock, for stock dividends,  and exercise of warrants  acquired by these selling
stockholders  from us in a private  placement.  Under the terms of the  Series B
convertible preferred stock and the warrants, no selling stockholder can convert
Series B  convertible  preferred  stock or exercise  warrants to the extent such
conversion  or  exercise  would  cause  the  selling  stockholder's   beneficial
ownership of our common stock (excluding shares underlying  unconverted Series B
convertible  preferred  stock and  unexercised  warrants)  to exceed 4.9% of the
outstanding shares of common stock.

<TABLE>
<CAPTION>


                                       Shares Owned                                   Shares Owned
                                    Prior to Offering      Shares to be Sold          After Offering
                                    -----------------      -----------------          ---------------
Name of Stockholder                       Number                Number            Number       Percentage
- -------------------                       ------                ------            ------        ----------

<S>                                  <C>                  <C>                  <C>            <C>
Advantage Fund II Ltd.(1)              1,514,102(2)         2,443,352(3)(4)           0              0

Koch Investment Group Limited(5)         908,503(6)         1,466,090(3)(4)           0              0

Clarion Capital Corporation              133,865(7)            39,090(3)(4)     110,000              *

Reedland Capital Partners, a              40,000(8)              40,000               0              0
Division of Financial West
Group

</TABLE>


Footnotes to Table

 *      Less than one percent.

<PAGE>14

(1)     Genesee International, Inc., the investment manager of Advantage Fund II
        Ltd., may be deemed to beneficially  own the shares offered by Advantage
        through its shared  dispositive  and voting power over such shares.  Mr.
        Donald R. Morken, the controlling  stockholder of Genesee International,
        may be deemed to control the exercise by Genesee  International  of such
        shared dispositive and voting power over such shares.

(2)     Represents  the 1,100,377  shares  issuable  upon the  conversion of the
        Series B convertible  preferred stock at the initial conversion price of
        $2.2719, 138,625 shares representing two years of accrued dividends, and
        275,100 shares that may be issued upon the exercise of warrants.

(3)     Pursuant to the Series B Convertible preferred stock purchase agreement,
        we have agreed to register 175% of the shares of common stock underlying
        the  Series B  Convertible  preferred  stock and of the shares of common
        stock that may be issued as dividends for a two year period,  and shares
        of common stock underlying warrants.

(4)     Represents  the  maximum  number of shares  that can be issued  upon the
        conversion   of  Series  B   convertible   preferred   stock   which  is
        approximately  15.84% of the then issued and  outstanding  shares in the
        aggregate  at the time of  closing  plus the  shares  issuable  upon the
        exercise of the  warrants.  Under the terms of the Series B  convertible
        preferred  stock and the warrants,  no selling  stockholder  can convert
        Series B convertible  preferred stock or exercise warrants to the extent
        such  conversion  or  exercise  would  cause the  selling  stockholder's
        beneficial  ownership of our common stock (excluding  shares  underlying
        unconverted  Series  B  convertible   preferred  stock  and  unexercised
        warrants) to exceed 4.9% of the outstanding shares of common stock.

(5)     Koch  Industries,  Inc., the indirect  parent company of Koch Investment
        Group Limited,  may be deemed to beneficially  own the shares offered by
        Koch Investment Group Limited through its shared  dispositive and voting
        power  over  such  shares.  Messrs.  Charles  Koch and David  Koch,  the
        majority  stockholders of Koch Industries,  may be deemed to control the
        exercise by Koch Industries of such shared  dispositive and voting power
        over such shares.

(6)     Represents the 660,263 shares issuable upon the conversion of the Series
        B  convertible  preferred  stock  at the  initial  conversion  price  of
        $2.2719,  83,180 shares  representing two years of accrued dividends and
        165,060 shares that may be issued upon the exercise of warrants.

(7)     Includes  110,000  shares of common stock.  Also includes  17,605 shares
        issuable upon the conversion of the Series B convertible preferred stock
        at the initial  conversion price of $2.2719,  2,218 shares  representing
        two years of accrued  dividends and 4,042 shares that may be issued upon
        the exercise of warrants.

(8)     Represents shares underlying placement agent warrants, exercisable until
        December 22, 2004, at $2.72628 per share.

        As of the date of this Prospectus,  the selling stockholders do not hold
any other of our  securities  other than the  shares  being  offered  under this
Prospectus and the Series B convertible  preferred stock and warrants  described
in this  Prospectus,  except for 110,000  shares  underlying  Series A preferred
stock held by Clarion Capital Corporation.  None of the selling stockholders has
had any material relationship with us within the past three years.

                            DESCRIPTION OF SECURITIES

        Our authorized capital stock consists of two classes: 50,000,000 shares,
$.001 par value,  of common  stock and  2,000,000  shares,  $.001 par value,  of
preferred stock. As of January 14, 2000,  21,338,262 shares of common stock were
outstanding,  750,000 shares of Series A preferred stock were  outstanding,  and
4,040 shares of Series B preferred  stock were  outstanding.  There are no other
series of preferred stock outstanding.

Common Stock

        Common stock  shareholders  have full voting  rights,  one vote for each
share held of record.  Subject to  preferential  rights of Series A and Series B
preferred stock shareholders, common stock shareholders  are entitled to receive

<PAGE>15

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
common  shares  offered  hereby  will  be,  validly  issued,   fully  paid,  and
nonassessable.

Preferred Stock

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

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 share of Series A preferred stock is convertible into five
shares of common  stock at the option of the  holder or at our  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  share of  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  remain  outstanding,  the  Series  A  preferred  stock
shareholders  are entitled to vote for one director,  as a 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 of our capital stock,  (iii) sale or disposition of substantially all of our
property or business or any  consolidation or merger with any entity in which we
are not the  survivor,  (iv) an amendment to our  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.  The  Series A
preferred  stock  shareholders  have approved by a majority vote the issuance of
the Series B preferred shares on a pari passu basis with the Series A shares.

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

     Liquidation  Rights.  Upon liquidation,  dissolution,  or winding up of our
company,  the holder of 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
shareholders of the liquidation  preference as adjusted,  the Series A preferred
stock  shareholders  shall  not be entitled to any further distribution. If upon

<PAGE>16

any liquidation,  dissolution,  or winding up the assets to be distributed among
the Series A preferred stock shareholders 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.

        Preemptive  Rights.  Each  Series  A  preferred  stock  shareholder  has
preemptive  rights to purchase any new share issuance by us in order to maintain
his or her percentage share ownership interest in our company.

Series B Convertible Preferred Stock

        We have designated 4,040 shares as Series B convertible preferred stock.
Each share of Series B preferred stock has the following characteristics:

        Conversion.  The  Series B  convertible  preferred  stock  is  currently
limited in conversion  to a maximum of 4,236,000  shares.  However,  the current
conversion  price is a fixed  conversion  price of $2.2719 which  represents the
average  market price of our common stock for the ten days prior to the issuance
of the Series B convertible  preferred  stock on December 22, 1999,  the date we
sold the  initial  4,000  shares of the Series B  convertible  preferred  stock.
Commencing on June 22, 2000, the conversion  price will be adjusted on such date
and  every  six  months  thereafter  to be the  lesser  of (a) 130% of the fixed
conversion price as stated above, or (b) 90% of the average market price for the
ten days prior to such  adjustment  date. If certain  events occur,  such as our
inability to provide the Series B preferred stock holders with common stock on a
timely basis, or our failure to pay any applicable redemption price when due and
such events are deemed not within the Company's control,  meaning they result by
no action or  inaction  on the  Company's  part,  the  conversion  price will be
adjusted to an amount equal to 70% of what it otherwise  would have been at that
time. The adjusted  conversion  price will be in effect for as long as the event
continues and for a period of sixty days thereafter.

        In addition,  the  conversion  price will be subject to  adjustment  if,
based on the then current  conversion price, the Series B preferred stock may be
converted  into  20% or more of the  common  stock  outstanding  and we have not
previously obtained  stockholder approval to issue more than 20%. In such event,
the  conversion  price will be  adjusted  to 80% of the then  conversion  price.
Further,  due to Nasdaq  SmallCap  listing  requirements,  the  Company  will be
required to seek shareholder  approval to allow for the conversion of the Series
B  preferred  stock  in an  amount  exceeding  20% or more of its  common  stock
outstanding  before issuance.  If we fail to obtain  shareholder  approval,  the
conversion  price  will be  adjusted  to 60% of the  then  conversion  price  by
contract, we cannot issue more than the 20% without stockholder approval.

        Upon an adjustment of the  conversion  price,  the number of shares into
which  the  Series  B   convertible   preferred   stock  may  be   converted  is
correspondingly  adjusted.  The conversion  price and number of shares of common
stock  underlying  the Series B convertible  preferred  stock is also subject to
adjustment   for  stock   splits,   stock   dividends,   combinations,   capital
reorganizations, and similar events relating to our common stock.

        The holders of Series B convertible  preferred  stock cannot convert the
Series B convertible  preferred  stock into common stock beyond that which would
result in their beneficial ownership exceeding more than 4.9% of the then issued
and  outstanding  shares of common stock.  We negotiated this provision with the
holders of the Series B Convertible preferred stock.

<PAGE>17

        Voting Rights.  The Series B convertible  preferred stock has no general
voting rights. However, holders of the Series B convertible preferred stock have
the right to consent to the issuance of any capital  stock that is senior to the
Series B convertible  preferred  stock,  to any amendment of our  certificate of
incorporation  which  materially and adversely  affects the Series B convertible
preferred  stock,  and to any amendment to the terms of the Series B convertible
preferred stock. In addition,  pursuant to the purchase  agreements entered into
in  connection  with the issuance of the Series B convertible  preferred  stock,
without the consent of the holders of the Series B convertible  preferred stock,
we may not issue for approximately  twelve months after issuance of the Series B
preferred stock, any common stock (or securities convertible into common stock),
at a price below the market  price of the common  stock on the date of issuance,
except in certain specified  instances.  For  approximately  twelve months after
issuance,  the holders of the Series B convertible  preferred  stock also have a
right of first refusal to acquire any such equity securities except in specified
instances set forth in the purchase agreements.

        Dividends.  Dividends at the rate of $60 per annum per share of Series B
preferred stock (6% annual dividend) are payable in cash or, at our option,  may
be added to the value of the Series B  convertible  preferred  stock  subject to
conversion  and to the $1,000 per share  liquidation  preference of the Series B
convertible preferred stock.

Redemption

        By Us.  If we  are  in  compliance  with  the  terms  of  the  Series  B
convertible preferred stock and our agreements with the selling stockholders, we
have the right at any time to redeem the Series B convertible preferred stock at
a premium  (generally,  120% of the  $1,000  per share  liquidation  value  plus
accrued and unpaid dividends),  and under certain  circumstances,  at the market
value of the common stock into which the Series B  convertible  preferred  stock
would  otherwise be  convertible.  Assuming we are in compliance with such terms
and  agreements,  after the third  anniversary  of  issuance,  we may redeem the
Series B convertible  preferred stock at its liquidation  value plus accrued and
unpaid dividends.

        By the Holders of the Series B Convertible  Preferred  Stock. If certain
events occur which are solely  within our  control,  the holders of the Series B
convertible  preferred stock have the right to request that we repurchase all or
some of their Series B convertible preferred stock at the greater of the premium
or converted market value.  Those events in which holders may request repurchase
include the following:

o    there is no  closing  bid  price  reported  for our  common  stock for five
     consecutive trading days;

o    our common  stock  ceases to be listed for  trading on the Nasdaq  SmallCap
     Market;

o    the holders of the Series B convertible  preferred stock are unable, for 30
     or more days  (whether  or not  consecutive),  to sell their  common  stock
     issuable  upon  conversion  of the  Series B  convertible  preferred  stock
     pursuant to an effective registration statement;

o    we default under any of the agreements relating to our sale of the Series B
     convertible  preferred  stock,  including  our  failure  to timely  deliver
     certificates for common stock upon conversion;

o    certain business combination events;

<PAGE>18

o       the  adoption  of  any  amendment  to  our  Articles  of   Incorporation
        materially adverse to the holders of the Series B convertible  preferred
        stock  without  the consent of the holders of a majority of the Series B
        convertible preferred stock; and

o       the holders of the Series B  convertible  preferred  stock are unable to
        convert all of their shares  because of  limitations  under  exchange or
        market  rules  that  require  stockholder   approval  of  certain  stock
        issuances and we fail to obtain such approval.

        However,  we may issue a "Control Notice" to the holders of the Series B
preferred  stock  indicating  that such event is not  within the  control of the
Company,  and the conversion price will be adjusted to an amount equal to 70% of
what it  otherwise  would have been at that  time,  and will be in effect for as
long as the event  continues  and for a period of sixty days  thereafter.  If we
issue a Control  Notice,  then,  in that  instance,  the holders of the Series B
preferred  stock will not have the right to have their Series B preferred  stock
redeemed. See "Series B Convertible Preferred Stock - Conversion."

        Liquidation  Rights.  Upon  liquidation,  the  holders  of the  Series B
convertible preferred stock will be entitled to receive, before any distribution
to holders of our common stock or any other class or series of our capital stock
ranking  junior  to  the  Series  B  convertible  preferred  stock,  liquidation
distributions equal to $1,000 per share, plus any accrued and unpaid dividends.

Series B Warrants

        We also issued warrants in connection with the private  placement of our
Series B convertible  preferred  stock. We issued  warrants to purchase  444,562
shares of common stock to the holders of Series B convertible  preferred  stock,
and 40,000 warrants to the placement  agent.  The exercise price of the warrants
is $2.72628 per share,  and they expire on December  22, 2004.  The warrants are
subject to  customary  antidilution  provisions  with  respect to stock  splits,
mergers, and dividends.

Series B Registration Obligation

        We have  agreed to  register  for  resale  the  shares  of common  stock
issuable upon the conversion of the Series B convertible preferred stock and the
exercise of the warrants.

Stock Options

        As of January 14, 2000, we had  outstanding  options to purchase a total
of  2,125,500  shares of common stock at exercise  prices  ranging from $1.13 to
$4.50 per share, of which options to purchase 1,887,166 shares were exercisable.
Some of these  options are subject to vesting,  and in general,  have a three or
five year exercise  period.  See our "Annual Report on Form 10-K, as amended,  -
Notes to Financial Statements."

Other Warrants

        As of January 14, 2000, warrants to purchase a total of 2,958,763 shares
of common stock were  outstanding  with  exercise  prices  ranging from $1.20 to
$3.0966  per share,  all of which were  exercisable.  Included  in the number of
warrants  are  warrants to  purchase  484,562  shares of common  stock which are
subject to resale by this  Prospectus.  See our "Annual  Report on Form 10-K, as
amended, - Notes to Financial  Statements" which is incorporated by reference in
this Prospectus.

<PAGE>19

                     CERTIFICATE OF INCORPORATION AND BYLAWS

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

     Insofar as indemnification for liabilities arising under the Securities Act
may be permitted to directors,  officers, and controlling persons of the company
pursuant to the foregoing provisions, or otherwise, we have 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  us  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,  we will, unless in the opinion
of our 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., 12039 West Alameda Parkway, Suite Z2, Lakewood, CO  80228.

                                     EXPERTS

     Ernst &  Young  LLP,  independent  auditors,  have  audited  our  financial
statements  and  schedule  included  in our Annual  report on Form 10-K and Form
10-K/A-1 for the year ended June 30, 1999,  as set forth in their report  (which
contains 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),  which is incorporated by reference in this
Prospectus and elsewhere in the registration statement. Our financial statements
and  schedule are  incorporated  by reference in reliance on Ernst & Young LLP's
report, given on their authority 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, V.P. and General Counsel. Mr. Adams beneficially owned options to acquire
180,000 shares of common stock and owned outright  24,474 shares of common stock
as of February 14, 2000.

                       WHERE CAN YOU FIND MORE INFORMATION

     Government Filings: We file annual, quarterly and special reports and other
information with the Securities and Exchange  Commission.  You may read and copy
any document that we file at the Commission's Public Reference Room at 450 Fifth
Street,  N.W., Room 1024,  Washington,  D.C. 20549,  and at its regional offices
located at 7 World Trade Center,  13th Floor,  New York, New York 10048,  and at
Northwest  Atrium Center,  500 Madison  Street,  Suite 1400,  Chicago,  Illinois

<PAGE>20

60661.  Please call the Securities and Exchange Commission at 1-800-SEC-0330 for
more information  about the Public Reference Rooms. Most of our filings are also
available  to you free of charge at the  Securities  and  Exchange  Commission's
website at http://www.sec.gov.

     Stock Market:  Our common stock is listed on the Nasdaq SmallCap Market and
similar  information  can be inspected and copied at the offices of the National
Association of Securities Dealers, Inc., 1735 K Street, N.W.,  Washington,  D.C.
20006.

        Registration Statement: We have filed a registration statement under the
Securities Act of 1933, as amended,  with the Securities and Exchange Commission
with  respect to the  common  stock  offered  under  this  Prospectus,  and this
Prospectus  is a part of  that  registration  statement.  However,  it does  not
contain all of the information  contained in the registration  statement and the
exhibits  filed  with  the  registration  statement.  You  should  refer  to the
registration statement and its exhibits for further information about us and the
common stock offered under this Prospectus.

        Information  Incorporated  by  Reference:  The  Securities  and Exchange
Commission  rules and  regulations  allow us to  "incorporate  by reference" the
information that we file with the Securities and Exchange Commission. This means
that we can disclose  additional  important  information  to you by referring to
those documents.  The information incorporated by reference is an important part
of  this  Prospectus,  and  information  that we file  in the  future  with  the
Securities and Exchange Commission will automatically  update and supersede this
information.  We have filed the  following  documents  with the  Securities  and
Exchange  Commission  and  the  information  contained  in  those  documents  is
incorporated by reference into this Prospectus:

     (1)  Annual  Report  on Form  10-K for the year  ended  June 30,  1999,  as
          amended on Form 10- K/A-1 filed March 10, 2000;

     (2)  Quarterly  Reports on Form 10-Q for the quarter  ended  September  30,
          1999, and for the quarter ended December 31, 1999;

     (3)  Current Report on Form 8-K for the event dated December 22, 1999;

     (4)  Proxy  Statement  for  the  Annual  Meeting  of  Stockholders  held on
          December 10, 1999; and

     (5)  The description of our common stock contained in Form 8-A.

        Please note that all other  documents and reports  filed under  Sections
13(a),  13(c),  14 or 15(d)  of the  Securities  and  Exchange  Act of 1934,  as
amended,  following the date of this  Prospectus and prior to the termination of
this  offering  will  be  deemed  to be  incorporated  by  reference  into  this
Prospectus  and  will be made a part of it from  the  date of  filing  with  the
Securities and Exchange Commission.

<PAGE>21

                       GLOSSARY OF CERTAIN TECHNICAL TERMS

510(k):  formal  notification  to the Food and Drug  Administration  ("FDA")  by
manufacturers  of Class I 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 obtaining blood from the patient for use in the same patient.

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

COAGULATION:  (1) the process of clot formation;  (2) in surgery, the disruption
of tissue by physical means to form a blockage or clot.

THERMO LINE  PRODUCTS:  (1) device for the  ultra-rapid  freezing of human blood
plasma; (2) portable device for the ultra-rapid  freezing 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.

CRYOPRECIPITATE:  any precipitate (substance that is separated out of a solution
of plasma) 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:  maintaining  the life of excised tissue or organs by freezing
and storing at very low temperatures.

CRYOSEAL(TM):  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  that 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 factor  or  component  of blood
participating  only  in  blood  coagulation.  Deficiency  of this  factor,  when
transmitted  as  a  sex-linked  recessive  trait,  causes  classical  hemophilia
(hemophilia A).

FACTOR XIII: fibrin stabilizing factor (FSF): a factor that joins fibrin strands
so that they become stable and insoluble in urea, thus enabling fibrin to form a
firm blood clot.

FIBRONECTIN:  an  adhesive  compound  of  protein  and  carbohydrate:  one  form
circulates in plasma,  another is a cell-surface protein which mediates cellular
adhesive interactions. Fibronectins are important in connective tissue, and they
are also involved in aggregation of platelets.

<PAGE>22

FIBRINOGEN:  a blood  protein  that is  converted  to fibrin in the  clotting of
blood.

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

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

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

PROGENITOR: a parent or ancestor.

THERMOLABILE:  easily altered or decomposed by heat.



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