SECURITIES PURCHASE AGREEMENT

ThermoGenesis Corp.
2711 Citrus Road
Rancho Cordova, CA 95742

Ladies & Gentlemen:

     The  undersigned,   _____________________________(the  "Investor"),  hereby
confirms its agreement with you as follows:

1. This Securities  Purchase  Agreement (the  "Agreement") is made as of _______
__, 2004 between  ThermoGenesis  Corp., a Delaware  corporation (the "Company"),
and the Investor.

2. The Company has  authorized  the sale and issuance of up to 2,600,000  shares
(the  "Securities")  of common stock of the Company,  $0.001 par value per share
(the  "Common  Stock"),  to  certain  investors  in  a  private  placement  (the
"Offering").

3. The Company and the Investor  agree that the Investor  will purchase from the
Company and the Company will issue and sell to the Investor  ___________ shares,
for a purchase  price of $_______ per share,  or an aggregate  purchase price of
$_______________,   pursuant  to  the  Terms  and  Conditions  for  Purchase  of
Securities attached hereto as Annex I and incorporated herein by reference as if
fully set forth herein (the "Terms and Conditions").  Unless otherwise requested
by the  Investor,  certificates  representing  the  Securities  purchased by the
Investor  will be  registered  in the  Investor's  name and address as set forth
below.

4. The Investor  represents  that,  except as set forth below, (a) it has had no
position, office or other material relationship within the past three years with
the Company or persons known to it to be affiliates of the Company,  (b) neither
it,  nor  any  group  of  which  it is a  member  or  to  which  it is  related,
beneficially owns (including the right to acquire or vote) any securities of the
Company and (c) it has no direct or indirect affiliation or association with any
NASD      member      as     of      the      date      hereof.      Exceptions:
- --------------------------------------------------------------------------------
- -------------------------------------------------------------------------------.
(If no  exceptions,  write "none." If left blank,  response will be deemed to be
"none.")

     Please  confirm  that the  foregoing  correctly  sets  forth the  agreement
between us by signing in the space provided below for that purpose. By executing
this  Agreement,  you  acknowledge  that the Company may use the  information in
paragraph 4 above and the name and address  information  below in preparation of
the Registration Statement (as defined in Annex I).

AGREED AND ACCEPTED:
- -------------------

ThermoGenesis Corp.                   Investor:
                                               ---------------------------------

                                      By:
                                         ---------------------------------------

                                      Print Name:
- ---------------------------                      -------------------------------
By:
Title:                                Title:
                                            ------------------------------------

                                      Address:
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                                      Tax ID No.:
                                                 -------------------------------

                                      Contact name:
                                                   -----------------------------

                                      Telephone:
                                                --------------------------------

                                      Name in which  shares should be registered
                                      (if different):

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





                                     ANNEX I

                 TERMS AND CONDITIONS FOR PURCHASE OF SECURITIES


     1.  Authorization  and Sale of the  Securities.  Subject to these Terms and
Conditions,  the Company has  authorized  the sale of up to 2,600,000  shares of
common  stock.  The Company  reserves  the right to  increase  or decrease  this
number.

     2. Agreement to Sell and Purchase the Securities; Subscription Date.

          2.1 At the Closing (as defined in Section 3), the Company will
sell to the Investor,  and the Investor will purchase from the Company, upon the
terms and conditions  hereinafter set forth,  the number of Securities set forth
in Section 3 of the  Securities  Purchase  Agreement  to which  these  Terms and
Conditions are attached at the purchase price set forth thereon.

          2.2 The Company may enter into the same form of Securities
Purchase  Agreement,  including these Terms and  Conditions,  with certain other
investors (the "Other Investors") and expects to complete sales of Securities to
them.  (The  Investor  and  the  Other   Investors  are  hereinafter   sometimes
collectively  referred  to as  the  "Investors,"  and  the  Securities  Purchase
Agreement to which these Terms and  Conditions  are attached and the  Securities
Purchase Agreements  (including  attached Terms and Conditions)  executed by the
Other  Investors  are  hereinafter  sometimes  collectively  referred  to as the
"Agreements.") The Company may accept executed Agreements from Investors for the
purchase of Securities  commencing  upon the date on which the Company  provides
the Investors with the proposed purchase price per share and concluding upon the
date (the "Subscription  Date") on which the Company has (i) executed Agreements
with  Investors  for the  purchase of  Securities,  and (ii)  notified  SunTrust
Robinson Humphrey,  in its capacity as placement agent for this transaction,  in
writing that it is no longer accepting additional  Agreements from Investors for
the purchase of Securities.  The Company may not enter into any Agreements after
the Subscription Date.

     3. Delivery of the  Securities at Closing.  The  completion of the purchase
and sale of the Securities (the  "Closing")  shall occur (the "Closing Date") on
________ __, 2004, at the offices of the Company's counsel. At the Closing,  the
Company  shall   deliver  to  the  Investor  one  or  more  stock   certificates
representing  the number of Securities  set forth in Section 3 of the Securities
Purchase  Agreement,  each such  certificate to be registered in the name of the
Investor or, if so indicated on the signature  page of the  Securities  Purchase
Agreement, in the name of a nominee designated by the Investor.

     The Company's  obligation to issue the  Securities to the Investor shall be
subject to the following  conditions,  any one or more of which may be waived by
the Company: (a) receipt by the Company of a certified or official bank check or
wire  transfer  of  funds in the  full  amount  of the  purchase  price  for the
Securities being purchased hereunder as set forth in Section 3 of the Securities
Purchase  Agreement;  (b)  completion  of the  purchases  and  sales  under  the
Agreements with the Other Investors; and (c) the accuracy of the representations
and warranties made by the Investors and the  fulfillment of those  undertakings
of the Investors to be fulfilled prior to the Closing.

     The Investor's  obligation to purchase the  Securities  shall be subject to
the  following  conditions,  any one or  more  of  which  may be  waived  by the
Investor:  (a)  Investors  shall have  executed  Agreements  for the purchase of
Securities,  (b) the  representations  and  warranties  of the Company set forth
herein shall be true and correct as of the Closing Date in all material respects
(except for  representations  and  warranties  that speak as of a specific date,
which  representations and warranties shall be true and correct as of such date)
and (c) the Investor  shall have received such  documents as such Investor shall
reasonably have requested,  including,  a standard opinion of Company Counsel as
to the matters set forth in Sections  4.2 and 4.4 and as to  exemption  from the
registration  requirements  of the  Securities  Act of  1933,  as  amended  (the
"Securities Act"), of the sale of the Securities.

     4.  Representations,  Warranties and Covenants of the Company.  The Company
hereby represents and warrants to, and covenants with, the Investor, as follows:

          4.1 Organization. The Company is duly organized and validly
existing  in  good  standing  under  the  laws  of  the   jurisdiction   of  its
organization.  Each of the Company and its  Subsidiaries (as defined in Rule 405
under the  Securities  Act) has full power and  authority  to own,  operate  and
occupy its properties and to conduct its business as presently  conducted and as
described in the documents  filed by the Company under the  Securities  Exchange
Act of 1934, as amended (the "Exchange Act"), since the end of its most recently



completed fiscal year through the date hereof,  including,  without  limitation,
its most recent report on Form 10-K (collectively, the "Exchange Act Documents")
and is  registered  or  qualified  to do business  and in good  standing in each
jurisdiction in which the nature of the business conducted by it or the location
of the properties  owned or leased by it requires such  qualification  and where
the failure to be so  qualified  would have a material  adverse  effect upon the
condition  (financial or otherwise),  earnings,  business or business prospects,
properties or operations of the Company and its Subsidiaries,  considered as one
enterprise (a "Material Adverse Effect"),  and no proceeding has been instituted
in any such  jurisdiction,  revoking,  limiting  or  curtailing,  or  seeking to
revoke, limit or curtail, such power and authority or qualification.

          4.2   Due  Authorization  and  Valid  Issuance.  The  Company  has all
requisite  power and authority to execute,  deliver and perform its  obligations
under the  Agreements,  and the Agreements have been duly authorized and validly
executed and delivered by the Company and  constitute  legal,  valid and binding
agreements of the Company  enforceable  against the Company in  accordance  with
their terms,  except as rights to indemnity and  contribution  may be limited by
state or federal  securities  laws or the public  policy  underlying  such laws,
except as enforceability  may be limited by applicable  bankruptcy,  insolvency,
reorganization,  moratorium or similar laws affecting creditors' and contracting
parties' rights generally and except as enforceability may be subject to general
principles of equity (regardless of whether such enforceability is considered in
a  proceeding  in equity  or at law).  The  Securities  being  purchased  by the
Investor  hereunder  will,  upon issuance and payment  therefor  pursuant to the
terms hereof, be duly authorized, validly issued, fully-paid and non-assessable.

          4.3   Non-Contravention.   The    execution    and  delivery  of   the
Agreements,  the issuance and sale of the Securities  under the Agreements,  the
fulfillment  of  the  terms  of  the  Agreements  and  the  consummation  of the
transactions  contemplated  thereby will not (A) conflict  with or  constitute a
violation of, or default (with the passage of time or otherwise)  under, (i) any
material  bond,  debenture,  note or  other  evidence  of  indebtedness,  lease,
contract,  indenture,  mortgage, deed of trust, loan agreement, joint venture or
other  agreement or instrument to which the Company or any Subsidiary is a party
or by which it or any of its  Subsidiaries  or their  respective  properties are
bound,  (ii) the  charter,  by-laws  or other  organizational  documents  of the
Company  or  any  Subsidiary,  or  (iii)  any  law,  administrative  regulation,
ordinance or order of any court or  governmental  agency,  arbitration  panel or
authority  applicable  to the  Company  or any  Subsidiary  or their  respective
properties,  except in the case of clauses (i) and (iii) for any such conflicts,
violations  or  defaults  which are not  reasonably  likely  to have a  Material
Adverse  Effect  or (B)  result  in the  creation  or  imposition  of any  lien,
encumbrance,  claim, security interest or restriction whatsoever upon any of the
material   properties  or  assets  of  the  Company  or  any  Subsidiary  or  an
acceleration of indebtedness pursuant to any obligation,  agreement or condition
contained  in any  material  bond,  debenture,  note or any  other  evidence  of
indebtedness  or any material  indenture,  mortgage,  deed of trust or any other
agreement or instrument to which the Company or any  Subsidiary is a party or by
which any of them is bound or to which any of the material property or assets of
the Company or any Subsidiary is subject. No consent, approval, authorization or
other order of, or  registration,  qualification  or filing with, any regulatory
body,  administrative agency, or other governmental body in the United States or
any other person is required for the  execution  and delivery of the  Agreements
and the valid  issuance and sale of the  Securities  to be sold  pursuant to the
Agreements,  other than such as have been made or  obtained,  and except for any
post-closing  securities  filings  or  notifications  required  to be made under
federal or state securities laws.

          4.4   Capitalization.   The  capitalization  of  the  Company  as   of
December  31, 2003 is as set forth in the most recent  applicable  Exchange  Act
Documents.  The Company  has not issued any capital  stock since that date other
than  pursuant to (i)  employee  benefit  plans  disclosed  in the  Exchange Act
Documents,  or (ii) outstanding warrants,  options or other securities disclosed
in the  Exchange  Act  Documents  or (iii) as  disclosed  in Schedule  4.4.  The
Securities to be sold pursuant to the Agreements have been duly authorized,  and
when issued and paid for in accordance  with the terms of the Agreements will be
duly and validly issued, fully paid and nonassessable. The outstanding shares of
capital  stock of the Company  have been duly and  validly  issued and are fully
paid and  nonassessable,  have been  issued in  compliance  with all federal and
state securities laws, and were not issued in violation of any preemptive rights
or similar rights to subscribe for or purchase  securities.  Except as set forth
in or  contemplated  by the Exchange  Act  Documents,  there are no  outstanding
rights (including,  without limitation,  preemptive rights), warrants or options
to acquire,  or instruments  convertible into or exchangeable  for, any unissued
shares  of  capital  stock  or  other  equity  interest  in the  Company  or any
Subsidiary, or any contract, commitment, agreement, understanding or arrangement
of any  kind to  which  the  Company  is a party or of  which  the  Company  has
knowledge  and  relating to the  issuance  or sale of any  capital  stock of the
Company or any Subsidiary,  any such  convertible or exchangeable  securities or
any such  rights,  warrants or  options.  Without  limiting  the  foregoing,  no
preemptive right, co-sale right, right of first refusal,  registration right, or
other  similar  right exists with respect to the  Securities or the issuance and
sale thereof. No further approval or authorization of any stockholder, the Board
of  Directors  of the Company or others is required for the issuance and sale of
the  Securities.  The  Company  owns the entire  equity  interest in each of its
Subsidiaries,   free  and  clear  of  any  pledge,   lien,   security  interest,
encumbrance,  claim  or  equitable  interest,  other  than as  described  in the
Exchange Act Documents. Except as disclosed in the Exchange Act Documents, there
are no stockholders  agreements,  voting agreements or other similar  agreements
with  respect  to the  Common  Stock to which the  Company is a party or, to the
knowledge of the Company, between or among any of the Company's stockholders.

          4.5   Legal Proceedings.   There is  no material legal or governmental
proceeding pending or, to the knowledge of the Company,  threatened to which the
Company  or any  Subsidiary  is or may be a party or of which  the  business  or
property of the Company or any  Subsidiary  is subject that is not  disclosed in
the Exchange Act Documents.


          4.6   No Violations.   Neither  the  Company  nor any Subsidiary is in
violation  of its  charter,  bylaws,  or other  organizational  document,  or in
violation of any law, administrative regulation, ordinance or order of any court
or governmental agency, arbitration panel or authority applicable to the Company
or any Subsidiary,  which violation,  individually or in the aggregate, would be
reasonably likely to have a Material Adverse Effect, or is in default (and there
exists  no  condition  which,  with  the  passage  of time or  otherwise,  would
constitute a default) in any material  respect in the  performance  of any bond,
debenture,  note  or any  other  evidence  of  indebtedness  in  any  indenture,
mortgage,  deed of trust or any other material  agreement or instrument to which
the  Company  or any  Subsidiary  is a party  or by  which  the  Company  or any
Subsidiary is bound or by which the  properties of the Company or any Subsidiary
are bound, which would be reasonably likely to have a Material Adverse Effect.

          4.7 Governmental Permits, Etc. With the exception of the matters which
are dealt with  separately in Sections 4.1, 4.12,  4.13,  and 4.14,  each of the
Company  and  its   Subsidiaries   has  all  necessary   franchises,   licenses,
certificates and other authorizations from any foreign,  federal, state or local
government  or  governmental  agency,  department,  or body  that are  currently
necessary for the operation of the business of the Company and its  Subsidiaries
as currently  conducted  and as described in the Exchange Act  Documents  except
where the failure to currently  possess could not reasonably be expected to have
a Material Adverse Effect.

          4.8  Intellectual  Property.  Except as specifically  disclosed in the
Exchange  Act  Documents  (i) each of the Company and its  Subsidiaries  owns or
possesses  sufficient  rights  to  use  all  material  patents,  patent  rights,
trademarks,  copyrights,  licenses,  inventions,  trade secrets, trade names and
know-how (collectively, "Intellectual Property") described or referred to in the
Exchange Act Documents as owned or possessed by it or that are necessary for the
conduct of its  business as now  conducted  or as proposed  to be  conducted  as
described in the Exchange  Act  Documents  except where the failure to currently
own or possess  would not have a  Material  Adverse  Effect,  (ii)  neither  the
Company nor any of its  Subsidiaries  is infringing,  or has received any notice
of, or has any knowledge of, any asserted  infringement by the Company or any of
its  Subsidiaries  of,  any  rights  of  a  third  party  with  respect  to  any
Intellectual  Property  that,  individually  or in the  aggregate,  would have a
Material   Adverse  Effect  and  (iii)  neither  the  Company  nor  any  of  its
Subsidiaries  has received any notice of, or has any knowledge of,  infringement
by a third party with respect to any Intellectual Property rights of the Company
or of any  Subsidiary  that,  individually  or in the  aggregate,  would  have a
Material Adverse Effect.

          4.9 Financial Statements.  The financial statements of the Company and
the related notes  contained in the Exchange Act Documents  present  fairly,  in
accordance with generally accepted accounting principles, the financial position
of the Company and its Subsidiaries as of the dates  indicated,  and the results
of its operations and cash flows for the periods  therein  specified  consistent
with the books and records of the Company and its  Subsidiaries  except that the
unaudited  interim  financial  statements  were or are  subject  to  normal  and
recurring year-end  adjustments which are not expected to be material in amount.
Such  financial  statements  (including the related notes) have been prepared in
accordance with generally accepted accounting principles applied on a consistent
basis  throughout the periods therein  specified,  except as may be disclosed in
the notes to such financial statements,  or in the case of unaudited statements,
as may be permitted by the  Securities  and Exchange  Commission  (the "SEC") on
Form 10-Q under the  Exchange  Act and except as  disclosed  in the Exchange Act
Documents.  The  other  financial  information  contained  in the  Exchange  Act
Documents has been prepared on a basis consistent with the financial  statements
of the Company.

          4.10 No Material  Adverse Change.  Except as disclosed in the Exchange
Act Documents,  since  __________ __, 2004,  there has not been (i) any material
adverse  change in the  financial  condition  or earnings of the Company and its
Subsidiaries  considered  as one  enterprise,  (ii) any material  adverse  event
affecting  the  Company or its  Subsidiaries,  (iii) any  obligation,  direct or
contingent,  that is material to the Company and its Subsidiaries  considered as
one  enterprise,  incurred by the Company,  except  obligations  incurred in the
ordinary  course of  business,  (iv) any  dividend or  distribution  of any kind
declared,  paid  or made  on the  capital  stock  of the  Company  or any of its
Subsidiaries, or (v) any loss or damage (whether or not insured) to the physical
property  of the  Company or any of its  Subsidiaries  which has been  sustained
which has a Material Adverse Effect.

          4.11  Disclosure.  The  representations  and warranties of the Company
contained in this Section 4 as of the date hereof and as of the Closing Date, do
not contain any untrue  statement of a material fact or omit to state a material
fact required to be stated therein or necessary to make the statements  therein,
in light of the circumstances under which they were made, not misleading. Except
with  respect  to  the  material  terms  and   conditions  of  the   transaction
contemplated by the Agreements, which shall be publicly disclosed by the Company
pursuant to Section 15(b) hereof,  the Company  confirms that neither it nor any
person acting on its behalf has provided  Investor with any information that the
Company  believes  constitutes  material,  non-public  information.  The Company
understands   and   confirms   that   Investor   will  rely  on  the   foregoing
representations in effecting transactions in the securities of the Company.


          4.12 Nasdaq  Compliance.  The  Company's  Common  Stock is  registered
pursuant to Section  12(g) of the Exchange Act and is listed on The Nasdaq Stock
Market, Inc. National Market (the "Nasdaq National Market"), and the Company has
taken no action  designed to, or likely to have the effect of,  terminating  the
registration of the Common Stock under the Exchange Act or de-listing the Common
Stock  from  the  Nasdaq  National  Market,  nor has the  Company  received  any
notification  that the SEC or the National  Association  of Securities  Dealers,
Inc. ("NASD") is contemplating terminating such registration or listing.

          4.13  Reporting  Status.  The Company has filed in a timely manner all
documents  that the Company was  required to file under the  Exchange Act during
the 12 months  preceding the date of this  Agreement.  The  following  documents
complied  in all  material  respects  with the  SEC's  requirements  as of their
respective  filing dates, and the information  contained  therein as of the date
thereof did not contain an untrue  statement of a material fact or omit to state
a  material  fact  required  to be  stated  therein  or  necessary  to make  the
statements therein in light of the circumstances  under which they were made not
misleading:

               (a) 10-K, 10-Q's; proxy; 8-K's; other filings; and

               (b) all other  documents,  if any,  filed by the Company with the
               SEC since June 30, 2003 pursuant to the reporting requirements of
               the Exchange Act.

          4.14 Listing.  The Company shall comply with all  requirements  of the
National Association of Securities Dealers, Inc. with respect to the issuance of
the Securities and the listing thereof on the Nasdaq National Market.

          4.15 No Manipulation of Stock. The Company has not taken and will not,
in violation  of  applicable  law,  take,  any action  designed to or that might
reasonably be expected to cause or result in  stabilization  or  manipulation of
the  price  of the  Common  Stock  to  facilitate  the  sale  or  resale  of the
Securities.

          4.16 Company not an "Investment Company". The Company has been advised
of the rules and  requirements  under the  Investment  Company  Act of 1940,  as
amended (the  "Investment  Company  Act").  The Company is not, and  immediately
after receipt of payment for the Securities will not be, an "investment company"
or an entity  "controlled" by an "investment  company" within the meaning of the
Investment  Company Act and shall  conduct  its  business in a manner so that it
will not become subject to the Investment Company Act.

          4.17  Foreign  Corrupt  Practices.  Neither  the  Company,  nor to the
knowledge  of the  Company,  any agent or other  person  acting on behalf of the
Company,  has (i) directly or  indirectly,  used any corrupt  funds for unlawful
contributions,  gifts,  entertainment  or other  unlawful  expenses  related  to
foreign  or  domestic  political  activity,  (ii) made any  unlawful  payment to
foreign or  domestic  government  officials  or  employees  or to any foreign or
domestic  political  parties or campaigns from corporate funds,  (iii) failed to
disclose  fully any  contribution  made by the  Company  (or made by any  person
acting on its behalf of which the  Company is aware)  which is in  violation  of
law, or (iv)  violated in any  material  respect  any  provision  of the Foreign
Corrupt Practices Act of 1977, as amended.

          4.18 Accountants.  To the Company's knowledge,  Ernst & Young LLP, who
the Company  expects  will  express its opinion  with  respect to the  financial
statements to be incorporated  by reference from the Company's  Annual Report on
Form 10-K for the year ended June 30, 2003 and the Company's  Quarterly  Reports
on Form 10-Q for the quarters ended December 31 and September 30, 2003, into the
Registration  Statement (as defined below) and the prospectus which forms a part
thereof,  are independent  accountants as required by the Securities Act and the
rules and regulations promulgated thereunder.

          4.19 Contracts.  The contracts described in the Exchange Act Documents
that are  material  to the  Company  are in full  force  and  effect on the date
hereof, and neither the Company nor, to the Company's knowledge, any other party
to such contracts is in breach of or default under any of such  contracts  which
would have a Material Adverse Effect.

          4.20 Taxes.  The Company has filed all  necessary  federal,  state and
foreign income and franchise tax returns and has paid or accrued all taxes shown
as due thereon,  and the Company has no knowledge of a tax deficiency  which has
been or might be asserted or  threatened  against it which would have a Material
Adverse Effect.

          4.21 Transfer  Taxes. On the Closing Date, all stock transfer or other
taxes (other than income taxes) which are required to be paid in connection with
the sale and transfer of the  Securities  to be sold to the  Investor  hereunder
will be, or will have been,  fully paid or  provided  for by the Company and all
laws imposing such taxes will be or will have been fully complied with.


          4.22 Private Offering. Assuming the correctness of the representations
and  warranties of the  Investors  set forth in Section 5 hereof,  the offer and
sale of Securities  hereunder is exempt from  registration  under the Securities
Act.  The  Company  has not  distributed  and will not  distribute  prior to the
Closing Date any offering  material in connection with this Offering and sale of
the Securities other than the documents of which this Agreement is a part or the
Exchange  Act  Documents.  The Company has not in the past nor will it hereafter
take any action  independent of the placement  agent to sell,  offer for sale or
solicit offers to buy any securities of the Company which would bring the offer,
issuance or sale of the Securities as contemplated by this Agreement, within the
provisions of Section 5 of the Securities  Act,  unless such offer,  issuance or
sale was or shall be within the exemptions of Section 4 of the Securities Act.

          4.23  Disclosure  Controls  and  Procedures;  Internal  Controls.  The
Company's  certifying  officers  are  responsible  for  establishing  disclosure
controls  and  procedures  (as  defined  in  Exchange  Act Rules  13a-15(e)  and
15d-15(e)) for the Company and they have (a) designed such  disclosure  controls
and procedures, or caused such disclosure controls and procedures to be designed
under their  supervision,  to ensure that material  information  relating to the
Company, including its Subsidiaries, is made known to the certifying officers by
others within those entities,  particularly  during the period in which the Form
10-K or Form 10-Q,  as the case may be, is being  prepared;  (b)  evaluated  the
effectiveness  of the  Company's  disclosure  controls and  procedures as of the
appropriate date as required by the rules under the Exchange Act in effect as of
the filing of such report and presented in such report their  conclusions  about
the  effectiveness  of  the  disclosure  controls  and  procedures  as  of  such
appropriate date based on their evaluation;  and (c) disclosed in the report any
changes in the Company's internal controls over financial  reporting as required
by the  applicable  rules under the  Exchange  Act in effect as of the filing of
such report.  Since August 30, 2003, there have been no changes in the Company's
internal  control  over  financial  reporting  (as such term is  defined in Rule
13a-15(f) under the Exchange Act) that has materially affected, or is reasonably
likely to materially  affect,  the registrant's  internal control over financial
reporting.

          4.24 Acknowledgment Regarding Purchasers' Purchase of Securities.  The
Company  acknowledges and agrees that each of the Purchasers is acting solely in
the  capacity  of an arm's  length  purchaser  with  respect to the  Transaction
Documents  and the  transactions  contemplated  hereby and thereby.  The Company
further  acknowledges  that no  Purchaser  is acting as a  financial  advisor or
fiduciary  of the Company or any other  Purchaser  (or in any similar  capacity)
with respect to the  Transaction  Documents  and the  transactions  contemplated
hereby  and  thereby  and any  advice  given  by any  Purchaser  or any of their
respective   representatives  or  agents  in  connection  with  the  Transaction
Documents  and the  transactions  contemplated  hereby  and  thereby  is  merely
incidental to such Purchaser's  purchase of the Securities.  The Company further
represents  to each  Purchaser  that the  Company's  decision to enter into this
Agreement  has  been  based  solely  on  the   independent   evaluation  of  the
transactions contemplated hereby by the Company and its representatives.

          4.25 No  Integrated  Offering.  Neither  the  Company,  nor any of its
affiliates,  nor any  person  acting on its or their  behalf  has,  directly  or
indirectly,  made any sales of any security under circumstances that would cause
this offering of the  Securities to be  integrated  with prior  offerings by the
Company  for  purposes  of the  Securities  Act or  any  applicable  stockholder
approval  provisions,   including,  without  limitation,  under  the  rules  and
regulations  of any exchange or automated  quotation  system on which any of the
securities of the Company are listed or designated,  nor will the Company or any
of its  Subsidiaries  take any action or steps that would cause the  offering of
the Securities to be integrated with other offerings.

     5. Representations, Warranties and Covenants of the Investor.

          5.1 The Investor  represents and warrants to, and covenants  with, the
Company  that:  (i) the  Investor  is an  "accredited  investor"  as  defined in
Regulation D under the  Securities  Act and the Investor is also  knowledgeable,
sophisticated and experienced in making, and is qualified to make decisions with
respect to  investments  in shares  presenting an investment  decision like that
involved in the purchase of the Securities,  including investments in securities
issued  by  the  Company  and  investments  in  comparable  companies,  and  has
requested,  received, reviewed and considered all information it deemed relevant
in making an informed decision to purchase the Securities;  (ii) the Investor is
acquiring  the number of  Securities  set forth in  Section 3 of the  Securities
Purchase  Agreement  in the  ordinary  course  of its  business  and for its own
account for investment only and with no present intention of distributing any of
such  Securities  or any  arrangement  or  understanding  with any other persons
regarding  the  distribution  of such  Securities;  (iii) the Investor will not,
directly or indirectly,  offer, sell,  pledge,  transfer or otherwise dispose of
(or solicit any offers to buy,  purchase or  otherwise  acquire or take a pledge
of)  any of the  Securities  except  in  compliance  with  the  Securities  Act,
applicable  state  securities  laws and the  respective  rules  and  regulations
promulgated  thereunder;  (iv) the Investor  has  answered all  questions on the
Investor  Questionnaire for use in preparation of the Registration Statement and
the  answers  thereto are true,  correct and  complete as of the date hereof and
will be true, correct and complete as of the Closing Date; (v) the Investor will
notify the Company  immediately of any change in any of such  information  until
such time as the Investor has sold all of its Securities or until the Company is
no longer required to keep the Registration  Statement  effective;  and (vi) the
Investor  has,  in  connection  with its  decision  to  purchase  the  number of
Securities set forth in Section 3 of the Securities Purchase  Agreement,  relied
only upon the Exchange Act Documents and the  representations  and warranties of
the Company contained herein.  The Investor  understands that its acquisition of



the Securities has not been registered under the Securities Act or registered or
qualified  under any state  securities  law in reliance  on specific  exemptions
therefrom,  which exemptions may depend upon, among other things,  the bona fide
nature of the Investor's  investment  intent as expressed  herein.  Investor has
completed  or caused to be completed  and  delivered to the Company the Investor
Questionnaire, which questionnaire is true, correct and complete in all material
respects.

          5.2 The Investor  acknowledges,  represents  and agrees that no action
has been or will be taken in any  jurisdiction  outside the United States by the
Company  that would  permit an  offering of the  Securities,  or  possession  or
distribution  of  offering  materials  in  connection  with  the  issue  of  the
Securities,  in any jurisdiction outside the United States where legal action by
the Company  for that  purpose is  required.  Each  Investor  outside the United
States will comply with all  applicable  laws and  regulations  in each  foreign
jurisdiction in which it purchases,  offers, sells or delivers Securities or has
in its possession or distributes any offering material,  in all cases at its own
expense.

          5.3 The  Investor  hereby  covenants  with the Company not to make any
sale of the Securities  without  complying with the provisions of this Agreement
and without causing the prospectus delivery requirement under the Securities Act
to be satisfied,  and the Investor acknowledges that the certificates evidencing
the Securities  will be imprinted  with a legend that  prohibits  their transfer
except  in  accordance  therewith.  The  Investor  acknowledges  that  there may
occasionally  be times when the Company  determines that it must suspend the use
of the Prospectus forming a part of the Registration  Statement, as set forth in
Section 7.2(c).

          5.4 The Investor  further  represents  and warrants to, and  covenants
with,  the Company that (i) the Investor has full right,  power,  authority  and
capacity  to enter  into  this  Agreement  and to  consummate  the  transactions
contemplated  hereby  and has  taken  all  necessary  action  to  authorize  the
execution,  delivery and performance of this Agreement,  and (ii) this Agreement
constitutes a valid and binding obligation of the Investor  enforceable  against
the  Investor in  accordance  with its terms,  except as  enforceability  may be
limited by  applicable  bankruptcy,  insolvency,  reorganization,  moratorium or
similar laws affecting  creditors' and contracting parties' rights generally and
except  as  enforceability  may be  subject  to  general  principles  of  equity
(regardless  of whether such  enforceability  is  considered  in a proceeding in
equity or at law) and except as the indemnification  agreements of the Investors
herein may be legally unenforceable.

          5.5 Investor will not use any of the  restricted  Securities  acquired
pursuant to this  Agreement  to cover any short  position in the Common Stock of
the Company if doing so would be in violation of applicable securities laws.

          5.6  The  Investor  understands  that  nothing  in  the  Exchange  Act
Documents,  this Agreement or any other  materials  presented to the Investor in
connection with the purchase and sale of the Securities  constitutes  legal, tax
or investment  advice. The Investor has consulted such legal, tax and investment
advisors as it, in its sole  discretion,  has deemed necessary or appropriate in
connection with its purchase of Securities.

          6.   Survival   of   Representations,   Warranties   and   Agreements.
Notwithstanding  any  investigation  made by any  party to this  Agreement,  all
covenants,  agreements,  representations  and warranties made by the Company and
the Investor herein shall survive the execution of this Agreement,  the delivery
to the Investor of the Securities being purchased and the payment therefor.

          7. Registration of the Securities; Compliance with the Securities Act.

               7.1 Registration Procedures and Other Matters. The Company shall:
                   -----------------------------------------

                    (a)  subject to receipt of  necessary  information  from the
Investors after prompt request from the Company to the Investors to provide such
information,  prepare and file with the SEC,  within 20 business  days after the
Closing  Date,  a  registration   statement  on  Form  S-3  (the   "Registration
Statement") to enable the resale of the Securities by the Investors from time to
time through the automated  quotation system of the Nasdaq National Market or in
privately-negotiated transactions pursuant to Rule 415 of the Securities Act;

                    (b) use its commercially reasonable best efforts, subject to
receipt of necessary  information  from the Investors  after prompt request from
the  Company  to the  Investors  to  provide  such  information,  to  cause  the
Registration Statement to become effective within 30 days after the Registration
Statement is filed by the Company (unless the Registration Statement is reviewed
by the SEC),  such efforts to include,  without  limiting the  generality of the
foregoing, preparing and filing with the SEC in such 30-day period any financial
statements  that are  required  to be filed prior to the  effectiveness  of such
Registration Statement;


                    (c) use its best  efforts to  prepare  and file with the SEC
such amendments and supplements to the Registration Statement and the Prospectus
used in  connection  therewith  as may be  necessary  to keep  the  Registration
Statement current, effective and free from any material misstatement or omission
to state a  material  fact for a period  not  exceeding,  with  respect  to each
Investor's  Securities  purchased  hereunder,  the  earlier  of (i)  the  second
anniversary  of the Closing  Date,  (ii) the date on which the Investor may sell
all  Securities  then held by the  Investor  without  restriction  by the volume
limitations  of Rule  144(e) of the  Securities  Act,  or (iii) such time as all
Securities  purchased by such  Investor in this Offering have been sold pursuant
to a registration statement;

                    (d) furnish to the Investor  with respect to the  Securities
registered  under  the  Registration  Statement  such  number  of  copies of the
Registration Statement,  Prospectuses and Preliminary Prospectuses in conformity
with the  requirements  of the  Securities  Act and such other  documents as the
Investor may reasonably request, in order to facilitate the public sale or other
disposition of all or any of the Securities by the Investor;  provided, however,
that the  obligation  of the  Company  to  deliver  copies  of  Prospectuses  or
Preliminary  Prospectuses to the Investor shall be subject to the receipt by the
Company of reasonable assurances from the Investor that the Investor will comply
with  the  applicable  provisions  of  the  Securities  Act  and of  such  other
securities or blue sky laws as may be  applicable in connection  with any use of
such Prospectuses or Preliminary Prospectuses;

                    (e) file  documents  required of the Company for normal blue
sky  clearance  in states  specified in writing by the Investor and use its best
efforts to maintain such blue sky  qualifications  during the period the Company
is required to maintain the effectiveness of the Registration Statement pursuant
to Section 7.1(c); provided,  however, that the Company shall not be required to
qualify to do business or consent to service of process in any  jurisdiction  in
which it is not now so qualified or has not so consented;

                    (f) bear all expenses in connection  with the  procedures in
paragraph  (a)  through  (e) of this  Section  7.1 and the  registration  of the
Securities pursuant to the Registration Statement; and

                    (g) advise the  Investor,  promptly  after it shall  receive
notice or obtain knowledge of the issuance of any stop order by the SEC delaying
or  suspending  the  effectiveness  of  the  Registration  Statement  or of  the
initiation or threat of any  proceeding  for that purpose;  and it will promptly
use its best  efforts to prevent the issuance of any stop order or to obtain its
withdrawal at the earliest possible moment if such stop order should be issued.

     Notwithstanding anything to the contrary herein, the Registration Statement
shall cover only the Securities. In no event at any time before the Registration
Statement  becomes  effective with respect to the  Securities  shall the Company
publicly  announce  or  file  any  other  registration  statement,   other  than
registrations  on Form S-8,  without the prior written  consent of a majority in
interest of the Investors.

     The Company  understands that the Investor  disclaims being an underwriter,
but the Investor  being deemed an  underwriter  by the SEC shall not relieve the
Company of any  obligations  it has  hereunder;  provided,  however  that if the
Company  receives  notification  from the SEC that the  Investor  is  deemed  an
underwriter,  then the  period by which the  Company is  obligated  to submit an
acceleration request to the SEC shall be extended to the earlier of (i) the 90th
day after such SEC  notification,  or (ii) 120 days after the initial  filing of
the Registration Statement with the SEC.

          7.2 Transfer of Securities After Registration; Suspension.
              -----------------------------------------------------

               (a) The Investor  agrees that it will not effect any  disposition
of the Securities or its right to purchase the Securities that would  constitute
a sale within the meaning of the  Securities Act except as  contemplated  in the
Registration  Statement  referred to in Section 7.1 and as described below or as
otherwise  permitted by law, and that it will promptly notify the Company of any
changes in the information set forth in the Registration Statement regarding the
Investor or its plan of distribution.

               (b) Except in the event that  paragraph  (c) below  applies,  the
Company shall (i) if deemed necessary by the Company, prepare and file from time
to time with the SEC a post-effective amendment to the Registration Statement or
a  supplement  to the related  Prospectus  or a  supplement  or amendment to any
document  incorporated  therein by reference or file any other required document
so that such  Registration  Statement will not contain an untrue  statement of a
material fact or omit to state a material fact required to be stated  therein or
necessary  to make the  statements  therein  not  misleading,  and so  that,  as
thereafter delivered to purchasers of the Securities being sold thereunder, such
Prospectus  will not contain an untrue  statement of a material  fact or omit to
state a material  fact  required to be stated  therein or  necessary to make the
statements  therein,  in light of the circumstances  under which they were made,
not misleading; (ii) provide the Investor copies of any documents filed pursuant
to Section  7.2(b)(i);  and (iii)  inform  each  Investor  that the  Company has



complied with its obligations in Section  7.2(b)(i) (or that, if the Company has
filed a post-effective amendment to the Registration Statement which has not yet
been  declared  effective,  the Company will notify the Investor to that effect,
will use its best  efforts to secure the  effectiveness  of such  post-effective
amendment as promptly as possible and will promptly notify the Investor pursuant
to Section 7.2(b)(i) hereof when the amendment has become effective).

               (c)  Subject  to  paragraph  (d)  below,  in the event (i) of any
request by the SEC or any other federal or state  governmental  authority during
the period of  effectiveness  of the  Registration  Statement for  amendments or
supplements to a Registration  Statement or related Prospectus or for additional
information;  (ii) of the  issuance  by the SEC or any  other  federal  or state
governmental  authority  of any stop order  suspending  the  effectiveness  of a
Registration  Statement or the initiation of any  proceedings  for that purpose;
(iii) of the  receipt by the  Company of any  notification  with  respect to the
suspension of the  qualification  or exemption from  qualification of any of the
Securities for sale in any  jurisdiction or the initiation or threatening of any
proceeding for such purpose;  or (iv) of any event or circumstance  which,  upon
the  advice  of its  counsel,  necessitates  the  making of any  changes  in the
Registration Statement or Prospectus,  or any document incorporated or deemed to
be incorporated  therein by reference,  so that, in the case of the Registration
Statement,  it will not contain any untrue  statement of a material  fact or any
omission to state a material fact required to be stated  therein or necessary to
make  the  statements  therein  not  misleading,  and  that  in the  case of the
Prospectus,  it will not contain any untrue  statement of a material fact or any
omission to state a material fact required to be stated  therein or necessary to
make the statements  therein, in the light of the circumstances under which they
were made,  not  misleading;  then the Company shall  deliver a  certificate  in
writing to the Investor (the "Suspension Notice") to the effect of the foregoing
and,  upon receipt of such  Suspension  Notice,  the Investor  will refrain from
selling any Securities  pursuant to the Registration  Statement (a "Suspension")
until the Investor's  receipt of copies of a supplemented or amended  Prospectus
prepared  and filed by the  Company,  or until it is  advised  in writing by the
Company that the current  Prospectus may be used, and has received copies of any
additional or supplemental  filings that are incorporated or deemed incorporated
by reference in any such Prospectus. In the event of any Suspension, the Company
will use its best efforts to cause the use of the  Prospectus so suspended to be
resumed as soon as  reasonably  practicable  within 20  business  days after the
delivery  of a  Suspension  Notice to the  Investor.  In addition to and without
limiting any other remedies (including, without limitation, at law or at equity)
available  to  the  Investor,   the  Investor  shall  be  entitled  to  specific
performance in the event that the Company fails to comply with the provisions of
this Section 7.2(c).

               (d) Notwithstanding the foregoing paragraphs of this Section 7.2,
the  Investor  shall  not  be  prohibited  from  selling  Securities  under  the
Registration  Statement as a result of Suspensions for more than 45 Trading Days
in any twelve month period,  unless, in the good faith judgment of the Company's
Board of Directors,  upon the written opinion of counsel, the sale of Securities
under the  Registration  Statement in reliance on this paragraph 7.2(d) would be
reasonably likely to cause a violation of the Securities Act or the Exchange Act
and result in liability to the Company.

               (e)  Provided  that a  Suspension  is not  then  in  effect,  the
Investor may sell Securities under the Registration Statement,  provided that it
arranges  for  delivery  of a  current  Prospectus  to the  transferee  of  such
Securities.  Upon  receipt  of a request  therefor,  the  Company  has agreed to
provide an adequate number of current Prospectuses to the Investor and to supply
copies to any other parties requiring such Prospectuses.

               (f) In the event of a sale of Securities by the Investor pursuant
to the Registration  Statement,  the Investor must also deliver to the Company's
transfer  agent,  with a copy to the Company,  a Certificate of Subsequent  Sale
substantially  in the form attached  hereto as Exhibit A, so that the Securities
may be properly transferred.

          7.3   Indemnification.   For  the   purpose  of  this   Section   7.3:
                ---------------

          (i) the term "Selling  Stockholder" shall include the Investor and any
affiliate of such Investor;

          (ii) the term "Registration Statement" shall include the Prospectus in
the form first filed with the SEC pursuant to Rule 424(b) of the  Securities Act
or filed as part of the  Registration  Statement at the time of effectiveness if
no Rule 424(b) filing is required,  exhibit, supplement or amendment included in
or relating to the Registration Statement referred to in Section 7.1; and

          (iii) the term "untrue  statement"  shall include any untrue statement
or alleged untrue statement, or any omission or alleged omission to state in the
Registration  Statement  a  material  fact  required  to be  stated  therein  or
necessary  to make the  statements  therein,  in the light of the  circumstances
under which they were made, not misleading.


               (a) The  Company  agrees  to  indemnify  and hold  harmless  each
Selling Stockholder from and against any losses,  claims, damages or liabilities
to which such Selling  Stockholder  may become subject (under the Securities Act
or otherwise) insofar as such losses, claims, damages or liabilities (or actions
or  proceedings  in  respect  thereof)  arise out of, or are based  upon (i) any
breach of the  representations  or warranties of the Company contained herein or
failure to comply with the  covenants and  agreements  of the Company  contained
herein,  (ii)  any  untrue  statement  of  a  material  fact  contained  in  the
Registration  Statement as amended at the time of  effectiveness or any omission
of a  material  fact  required  to be stated  therein or  necessary  to make the
statements  therein  not  misleading,  or (iii) any  failure  by the  Company to
fulfill any undertaking included in the Registration Statement as amended at the
time of effectiveness,  and the Company will reimburse such Selling  Stockholder
for any reasonable legal or other expenses reasonably incurred in investigating,
defending  or  preparing  to defend any such  action,  proceeding  or claim,  or
preparing to defend any such action,  proceeding  or claim,  provided,  however,
that the  Company  shall not be liable in any such case to the extent  that such
loss,  claim,  damage or  liability  arises out of, or is based upon,  an untrue
statement made in such Registration Statement or any omission of a material fact
required to be stated  therein or necessary to make the  statements  therein not
misleading in reliance upon and in conformity with written information furnished
to the Company by or on behalf of such Selling Stockholder  specifically for use
in  preparation  of the  Registration  Statement  or the failure of such Selling
Stockholder to comply with its covenants and agreements contained in Section 7.2
hereof  respecting  sale of the  Securities  or any statement or omission in any
Prospectus that is corrected in any subsequent  Prospectus that was delivered to
the  Selling  Stockholder  prior to the  pertinent  sale or sales by the Selling
Stockholder.  The Company  shall  reimburse  each  Selling  Stockholder  for the
amounts provided for herein on demand as such expenses are incurred.

               (b) The  Investor  agrees  to  indemnify  and hold  harmless  the
Company (and each person, if any, who controls the Company within the meaning of
Section 15 of the  Securities  Act,  each  officer of the  Company who signs the
Registration  Statement  and each  director of the Company) from and against any
losses,  claims,  damages  or  liabilities  to which  the  Company  (or any such
officer,   director  or  controlling  person)  may  become  subject  (under  the
Securities  Act or  otherwise),  insofar  as such  losses,  claims,  damages  or
liabilities (or actions or proceedings in respect  thereof) arise out of, or are
based  upon,  (i) any  failure  to  comply  with the  covenants  and  agreements
contained in Section 7.2 hereof  respecting sale of the Securities,  or (ii) any
untrue statement of a material fact contained in the  Registration  Statement or
any omission of a material  fact  required to be stated  therein or necessary to
make the statements  therein not misleading if such untrue statement or omission
was made in reliance upon and in conformity with written  information  furnished
by or on behalf  of the  Investor  specifically  for use in  preparation  of the
Registration  Statement,  and the Investor  will  reimburse the Company (or such
officer,  director or controlling  person), as the case may be, for any legal or
other expenses reasonably  incurred in investigating,  defending or preparing to
defend  any such  action,  proceeding  or claim;  provided  that the  Investor's
obligation to indemnify the Company shall be limited to the net amount  received
by the Investor from the sale of the Securities.

               (c) Promptly after receipt by any indemnified  person of a notice
of a claim or the beginning of any action in respect of which indemnity is to be
sought  against an  indemnifying  person  pursuant  to this  Section  7.3,  such
indemnified person shall notify the indemnifying person in writing of such claim
or of the  commencement  of such  action,  but the  omission  to so  notify  the
indemnifying  person will not relieve it from any liability which it may have to
any  indemnified  person  under this Section 7.3 (except to the extent that such
omission  materially and adversely affects the indemnifying  person's ability to
defend such action) or from any liability otherwise than under this Section 7.3.
Subject to the provisions  hereinafter  stated, in case any such action shall be
brought against an indemnified person, the indemnifying person shall be entitled
to participate therein, and, to the extent that it shall elect by written notice
delivered to the  indemnified  person  promptly  after  receiving  the aforesaid
notice  from such  indemnified  person,  shall be entitled to assume the defense
thereof, with counsel reasonably  satisfactory to such indemnified person. After
notice from the indemnifying  person to such indemnified  person of its election
to assume the defense thereof,  such indemnifying  person shall not be liable to
such  indemnified  person for any legal expenses  subsequently  incurred by such
indemnified  person in connection with the defense thereof,  provided,  however,
that if there  exists or shall exist a conflict  of interest  that would make it
inappropriate, in the opinion of counsel to the indemnified person, for the same
counsel to represent both the indemnified person and such indemnifying person or
any affiliate or associate thereof,  the indemnified person shall be entitled to
retain its own counsel at the  expense of such  indemnifying  person;  provided,
however,  that no  indemnifying  person  shall be  responsible  for the fees and
expenses of more than one separate  counsel  (together  with  appropriate  local
counsel) for all indemnified  parties. In no event shall any indemnifying person
be liable in respect of any amounts paid in  settlement of any action unless the
indemnifying  person shall have approved the terms of such settlement;  provided
that such consent shall not be unreasonably  withheld.  No  indemnifying  person
shall,  without the prior written consent of the indemnified person,  effect any
settlement  of any  pending  or  threatened  proceeding  in respect of which any
indemnified person is or could have been a party and indemnification  could have
been  sought  hereunder  by such  indemnified  person,  unless  such  settlement
includes an unconditional  release of such indemnified person from all liability
on claims that are the subject matter of such proceeding.

               (d) If the  indemnification  provided  for in this Section 7.3 is
unavailable  to or  insufficient  to hold harmless an  indemnified  person under
subsection  (a) or (b)  above in  respect  of any  losses,  claims,  damages  or



liabilities (or actions or proceedings in respect thereof)  referred to therein,
then each indemnifying  person shall contribute to the amount paid or payable by
such  indemnified  person  as a  result  of  such  losses,  claims,  damages  or
liabilities (or actions in respect thereof) in such proportion as is appropriate
to reflect the relative  fault of the Company on the one hand and the  Investor,
as well as any other Selling  Shareholders under such registration  statement on
the other in connection  with the statements or omissions or other matters which
resulted in such losses,  claims,  damages or liabilities (or actions in respect
thereof), as well as any other relevant equitable  considerations.  The relative
fault shall be determined by reference to, among other things, in the case of an
untrue statement,  whether the untrue statement relates to information  supplied
by the Company on the one hand or an Investor or other  Selling  Shareholder  on
the other and the parties' relative intent, knowledge, access to information and
opportunity  to correct or prevent  such untrue  statement.  The Company and the
Investor agree that it would not be just and equitable if contribution  pursuant
to this  subsection  (d) were  determined  by pro rata  allocation  (even if the
Investor  and other  Selling  Shareholders  were  treated as one entity for such
purpose) or by any other method of  allocation  which does not take into account
the  equitable  considerations  referred to above in this  subsection  (d).  The
amount  paid or  payable  by an  indemnified  person as a result of the  losses,
claims, damages or liabilities (or actions in respect thereof) referred to above
in this  subsection  (d) shall be deemed to include any legal or other  expenses
reasonably  incurred by such indemnified person in connection with investigating
or defending any such action or claim.  Notwithstanding  the  provisions of this
subsection  (d), the Investor  shall not be required to contribute any amount in
excess of the amount by which the net amount  received by the Investor  from the
sale of the  Securities  to which such loss  relates  exceeds  the amount of any
damages which such Investor has otherwise been required to pay by reason of such
untrue statement. No person guilty of fraudulent  misrepresentation  (within the
meaning  of  Section  11(f)  of  the  Securities   Act)  shall  be  entitled  to
contribution   from  any  person   who  was  not   guilty  of  such   fraudulent
misrepresentation.  The Investor's  obligations in this subsection to contribute
shall be in  proportion  to its Investor  sale of  Securities to which such loss
relates and shall not be joint with any other Selling Shareholders.

               (e) The parties to this Agreement  hereby  acknowledge  that they
are sophisticated  business persons who were represented by counsel,  or had the
opportunity to be represented by counsel,  during the negotiations regarding the
provisions hereof including,  without limitation, the provisions of this Section
7.3, and are fully informed regarding said provisions.  They further acknowledge
that the  provisions  of this Section 7.3 fairly  allocate the risks in light of
the ability of the parties to investigate  the Company and its business in order
to assure that  adequate  disclosure  is made in the  Registration  Statement as
required by the Act and the  Exchange  Act. The parties are advised that federal
or state public policy as interpreted by the courts in certain jurisdictions may
be contrary to certain of the  provisions  of this  Section 7.3, and the parties
hereto hereby expressly waive and relinquish any right or ability to assert such
public  policy as a defense to a claim under this Section 7.3 and further  agree
not to attempt to assert any such defense.

          7.4  Termination  of  Conditions  and   Obligations.   The  conditions
precedent imposed by Section 5 or this Section 7 upon the transferability of the
Securities  shall  cease  and  terminate  as to  any  particular  number  of the
Securities when such Securities shall have been effectively registered under the
Securities Act and sold or otherwise disposed of in accordance with the intended
method of  disposition  set forth in the  Registration  Statement  covering such
Securities or at such time as an opinion of counsel  reasonably  satisfactory to
the Company shall have been rendered to the effect that such  conditions are not
necessary in order to comply with the Securities Act.

          7.5 Information  Available.  So long as the Registration  Statement is
effective  covering the resale of Securities owned by the Investor,  the Company
will furnish to the Investor:

               (a) as soon as practicable after it is available, one copy of its
Annual Report to  Stockholders  (which  Annual  Report shall  contain  financial
statements audited in accordance with generally accepted  accounting  principles
by a national firm of certified public accountants);

               (b) upon the request of the  Investor,  all exhibits  excluded by
the  parenthetical to subparagraph (a) of this Section 7.5 as filed with the SEC
and all other information that is made available to shareholders; and

               (c) upon the  reasonable  request of the  Investor,  an  adequate
number of copies of the Prospectuses to supply to any other party requiring such
Prospectuses;  and upon the reasonable request of the Investor, the President or
the Chief Financial Officer of the Company (or an appropriate  designee thereof)
will  meet  with the  Investor  or a  representative  thereof  at the  Company's
headquarters  to  discuss  all  information   relevant  for  disclosure  in  the
Registration Statement covering the Securities and will otherwise cooperate with
any  Investor  conducting  an  investigation  for the  purpose  of  reducing  or
eliminating  such  Investor's  exposure to liability  under the Securities  Act,
including   the   reasonable   production  of   information   at  the  Company's
headquarters;  provided,  that the Company shall not be required to disclose any
confidential  information to or meet at its headquarters with any Investor until
and unless the Investor shall have entered into a  confidentiality  agreement in
form and substance reasonably  satisfactory to the Company with the Company with
respect thereto.


          7.6  Delayed  Effectiveness.  The  Company  and  Investor  agree  that
Investor  will suffer  damages if the Company  fails to fulfill its  obligations
pursuant  to Section  7.1 and 7.2 hereof  and that it would not be  possible  to
ascertain the extent of such damages with  precision.  Accordingly,  the Company
hereby agrees to pay liquidated damages ("Liquidated Damages") to Investor under
the following  circumstances:  (a) if the Registration Statement is not filed by
the Company on or prior to 20 business days after the Closing Date in accordance
with Section 7.1(a) (such an event, a "Filing Default"); (b) if the Registration
Statement is not declared effective by the SEC on or prior to 135 days after the
Closing  Date  (such  an  event,  an  "Effectiveness  Default");  or  (c) if the
Registration Statement (after its effectiveness date) ceases to be effective and
available to Investor  for one or more  periods that exceed in the  aggregate 45
days in any 12-month period (such an event, a "Suspension  Default" and together
with a Filing Default and an Effectiveness  Default, a "Registration  Default").
In the event of a Registration  Default, the Company shall as Liquidated Damages
pay to Investor,  for each 30-day period of a Registration Default, an amount in
cash equal to 1% of the aggregate  purchase  price paid by Investor  pursuant to
this Agreement;  provided that in no event shall the aggregate amount of cash to
be paid as  Liquidated  Damages  pursuant to this  Section 7.6 exceed 12% of the
aggregate purchase price paid by Investor.  The Company shall pay the Liquidated
Damages as follows:  (i) in connection  with a Filing  Default,  on the 20th day
after the Closing  Date,  and each 30th day  thereafter  until the  Registration
Statement  is filed  with  the SEC;  (ii) in  connection  with an  Effectiveness
Default,  on the 140th day after the Closing Date,  and each 30th day thereafter
until the Registration  Statement is declared  effective by the SEC; or (iii) in
connection with a Suspension  Default, on the 50th day (in the aggregate) of any
Suspensions  in any  12-month  period,  and each 30th day  thereafter  until the
Suspension is terminated in  accordance  with Section 7.2.  Notwithstanding  the
foregoing,  all periods  shall be tolled during  delays  directly  caused by the
action or inaction of any  Investor,  and the Company shall have no liability to
any Investor in respect of any such delay. The Liquidated Damages payable herein
shall  apply  on a pro rata  basis  for any  portion  of a  30-day  period  of a
Registration Default.

     8.  Notices.  All  notices,  requests,  consents  and other  communications
hereunder  shall be in writing,  shall be mailed (A) if within the United States
by  first-class  registered  or  certified  airmail,  or  nationally  recognized
overnight express courier, postage prepaid, or by facsimile, or (B) if delivered
from outside the United States,  by International  Federal Express or facsimile,
and  shall be  deemed  given  (i) if  delivered  by  first-class  registered  or
certified  mail,  three  business  days after so mailed,  (ii) if  delivered  by
nationally recognized overnight carrier, one business day after so mailed, (iii)
if delivered  by  International  Federal  Express,  two  business  days after so
mailed, (iv) if delivered by facsimile,  upon electronic confirmation of receipt
and shall be delivered as addressed as follows:

     (a) if to the Company, to:

         ThermoGenesis Corp.
         2711 Citrus Road
         Rancho Cordova, CA 95742
         Attn:  Renee M. Ruecker, Chief Financial Officer

     (b) with a copy to:

         David C. Adams
         Bartel Eng & Schroder
         1331 Garden Highway, Suite 300
         Sacramento, CA  95833
         Phone:  (916) 442-0400
         Fax:  (916) 442-3442

     (c) if to the Investor, at its address on the signature
         page hereto, or at such other address  or addresses as  may  have  been
         furnished to the Company in writing.

     9. Changes.  This Agreement may not be modified or amended except  pursuant
to an instrument in writing signed by the Company and the Investor.

     10.  Headings.  The headings of the various sections of this Agreement have
been inserted for  convenience  of reference  only and shall not be deemed to be
part of this Agreement.


     11. Severability.  In case any provision contained in this Agreement should
be invalid, illegal or unenforceable in any respect, the validity,  legality and
enforceability of the remaining provisions contained herein shall not in any way
be affected or impaired thereby.

     12.  Governing Law. This  Agreement  shall be governed by, and construed in
accordance with, the internal laws of the State of New York.

     13.   Counterparts.   This  Agreement  may  be  executed  in  two  or  more
counterparts, each of which shall constitute an original, but all of which, when
taken together, shall constitute but one instrument,  and shall become effective
when  one or more  counterparts  have  been  signed  by each  party  hereto  and
delivered to the other parties.

     14. Rule 144.  The Company  covenants  that it will timely file the reports
required to be filed by it under the Securities Act and the Exchange Act and the
rules and  regulations  adopted by the SEC thereunder (or, if the Company is not
required to file such reports, it will, upon the request of any Investor holding
Securities  purchased  hereunder made after the first anniversary of the Closing
Date,  make publicly  available  such  information  as necessary to permit sales
pursuant to Rule 144 under the  Securities  Act),  and it will take such further
action as any such Investor may reasonably  request,  all to the extent required
from time to time to enable such Investor to sell Securities purchased hereunder
without  registration  under the  Securities  Act within the  limitation  of the
exemptions  provided by (a) Rule 144 under the Securities  Act, as such Rule may
be amended from time to time,  or (b) any similar rule or  regulation  hereafter
adopted by the SEC. Upon the request of the  Investor,  the Company will deliver
to such  holder a written  statement  as to  whether it has  complied  with such
information and requirements.

     15.  Confidential  Information.  (a) The Investor represents to the Company
that, at all times during the Company's offering of the Securities, the Investor
has maintained in confidence all  non-public  information  regarding the Company
and relating  specifically to the financing  transaction  that is the subject of
this  agreement,  received by the Investor  from the Company or its agents,  and
covenants that it will continue to maintain in confidence such information until
such information (a) becomes generally  publicly  available other than through a
violation of this  provision by the Investor or its agents or (b) is required to
be disclosed in legal proceedings (such as by deposition, interrogatory, request
for  documents,   subpoena,   civil  investigation   demand,   filing  with  any
governmental  authority  or similar  process),  provided,  however,  that before
making any use or disclosure in reliance on this  subparagraph  (b) the Investor
shall give the Company at least fifteen (15) days prior written  notice (or such
shorter  period as required by law)  specifying  the  circumstances  giving rise
thereto and will furnish only that portion of the non-public  information  which
is legally  required  and will  exercise  its best  efforts  to obtain  reliable
assurance   that   confidential   treatment  will  be  accorded  any  non-public
information so furnished.


          (b) Public Statements.  The Company shall, on or before 8:30 a.m., New
York time,  on the first  Business Day  following  execution of the  Agreements,
issue a press release disclosing all material terms of the Offering.  Within one
(1) Business Day after the Closing Date, the Company shall file a Current Report
on Form 8-K with the SEC (the "8-K Filing") describing the terms of the Offering
and including as exhibits to the 8-K filing this  Agreement in the form required
by the Exchange Act.  Thereafter,  the Company shall timely file any filings and
notices  required by the SEC or applicable  law with respect to the Offering and
provide copies thereof to the Investors promptly after filing. The Company shall
not  publicly  disclose  the name of any  Investor,  or include  the name of any
Investor  in any  press  release  without  the  prior  written  consent  of such
Investor.





                               THERMOGENESIS CORP.

                             INVESTOR QUESTIONNAIRE

                (ALL INFORMATION WILL BE TREATED CONFIDENTIALLY)

To:      ThermoGenesis Corp.
         2711 Citrus Road
         Rancho Cordova, CA 95742


     This  Investor  Questionnaire  ("Questionnaire")  must be completed by each
potential  investor in  connection  with the offer and sale of the shares of the
common  stock,  par  value  $0.001  per  share,  of  ThermoGenesis   Corp.  (the
"Securities").  The Securities are being offered and sold by ThermoGenesis Corp.
(the  "Corporation")  without  registration under the Securities Act of 1933, as
amended (the "Act"),  and the securities laws of certain states,  in reliance on
the  exemptions  contained  in  Section  4(2)  of the Act  and on  Regulation  D
promulgated  thereunder and in reliance on similar  exemptions  under applicable
state laws.  The  Corporation  must  determine  that a potential  investor meets
certain  suitability  requirements before offering or selling Securities to such
investor.  The purpose of this  Questionnaire  is to assure the Corporation that
each investor will meet the applicable suitability requirements. The information
supplied by you will be used in determining whether you meet such criteria,  and
reliance upon the private offering  exemption from registration is based in part
on the information herein supplied.

     This  Questionnaire  does not constitute an offer to sell or a solicitation
of  an  offer  to  buy  any  security.   Your  answers  will  be  kept  strictly
confidential. However, by signing this Questionnaire you will be authorizing the
Corporation to provide a completed copy of this Questionnaire to such parties as
the Corporation  deems appropriate in order to ensure that the offer and sale of
the Securities  will not result in a violation of the Act or the securities laws
of any state and that you otherwise satisfy the suitability standards applicable
to  purchasers  of the  Securities.  All  potential  investors  must  answer all
applicable  questions and  complete,  date and sign this  Questionnaire.  Please
print or type your responses and attach  additional sheets of paper if necessary
to complete your answers to any item.

A.       BACKGROUND INFORMATION

Name:
     ---------------------------------------------------------------------------

Business Address:
                 ---------------------------------------------------------------
                                      (Number and Street)

- --------------------------------------------------------------------------------
(City)                           (State)                           (Zip Code)

Telephone Number: (___)
                        --------------------------------------------------------

Residence Address:
                  --------------------------------------------------------------
                                       (Number and Street)

- --------------------------------------------------------------------------------
(City)                           (State)                           (Zip Code)

Telephone Number: (___)
                        --------------------------------------------------------

If an individual:
Age:           Citizenship:                  Where registered to vote:
    ------                 --------------                             ----------

If a corporation, partnership, limited liability company, trust or other entity:
         Type of entity:
                        --------------------------------------------------------
         State of formation:                      Date of formation:
                            -------------------                      -----------

Social Security or Taxpayer Identification No.
                                              ----------------------------------

Send all correspondence to (check one):   ____ Residence      ____ Business
                                               Address             Address




Current ownership of securities of the Corporation:  __________ shares of common
stock,  $0.001  par value per share (the  "Common  Stock")  options to  purchase
__________ shares of Common Stock

B. STATUS AS ACCREDITED INVESTOR
   -----------------------------

     The  undersigned  is an  "accredited  investor"  as such term is defined in
Regulation  D under the Act,  as at the time of the sale of the  Securities  the
undersigned falls within one or more of the following categories (Please initial
one or more, as applicable):1

     ____ (1) a bank as defined in Section  3(a)(2) of the Act, or a savings and
loan  association or other  institution as defined in Section  3(a)(5)(A) of the
Act whether acting in its individual or fiduciary  capacity;  a broker or dealer
registered  pursuant to Section 15 of the  Securities  Exchange Act of 1934;  an
insurance company as defined in Section 2(13) of the Act; an investment  company
registered  under  the  Investment   Corporation  Act  of  1940  or  a  business
development company as defined in Section 2(a)(48) of that Act; a Small Business
Investment Corporation licensed by the U.S. Small Business  Administration under
Section  301(c)  or (d) of the Small  Business  Investment  Act of 1958;  a plan
established and maintained by a state, its political subdivisions, or any agency
or instrumentality  of a state or its political  subdivisions for the benefit of
its  employees,  if such plan has total  assets  in  excess  of  $5,000,000;  an
employee  benefit  plan within the  meaning of the  Employee  Retirement  Income
Security Act of 1974 if the investment decision is made by a plan fiduciary,  as
defined in Section 3(21) of such Act,  which is either a bank,  savings and loan
association,  insurance company,  or registered  investment  adviser,  or if the
employee  benefit  plan has  total  assets  in  excess  of  $5,000,000  or, if a
self-directed  plan,  with the investment  decisions made solely by persons that
are accredited investors;

     ____ (2) a private  business  development  company  as  defined  in Section
202(a)(22) of the Investment Adviser Act of 1940;

     ____ (3) an  organization  described  in Section  501(c)(3) of the Internal
Revenue Code of 1986, as amended, corporation, Massachusetts or similar business
trust,  or  partnership,  not formed for the specific  purpose of acquiring  the
Securities offered, with total assets in excess of $5,000,000;

     ____ (4) a natural person whose  individual  net worth,  or joint net worth
with  that  person's  spouse,  at the  time of  such  person's  purchase  of the
Securities exceeds $1,000,000;

     ____ (5) a  natural  person  who had an  individual  income  in  excess  of
$200,000 in each of the two most recent years or joint income with that person's
spouse  in  excess  of  $300,000  in each of those  years  and has a  reasonable
expectation of reaching the same income level in the current year;

     ____ (6) a trust, with total assets in excess of $5,000,000, not formed for
the specific  purpose of acquiring the  Securities  offered,  whose  purchase is
directed  by a  sophisticated  person  as  described  in Rule  506(b)(2)(ii)  of
Regulation D; and

     ____ (7) an  entity  in  which  all of the  equity  owners  are  accredited
investors (as defined above).

Note: Each equity owner must submit an individual investor questionnaire.

C. REPRESENTATIONS
   ---------------

     The  undersigned  hereby  represents  and  warrants to the  Corporation  as
follows:

1. Any  purchase  of the  Securities  would be  solely  for the  account  of the
undersigned  and not for the  account of any other  person or with a view to any
resale, fractionalization, division, or distribution thereof.

- --------
         1 As used in this Questionnaire, the term "net worth" means the excess
of total assets over total liabilities. In computing net worth for the purpose
of subsection (4), the principal residence of the investor must be valued at
cost, including cost of improvements, or at recently appraised value by an
institutional lender making a secured loan, net of encumbrances. In determining
income, the investor should add to the investor's adjusted gross income any
amounts attributable to tax exempt income received, losses claimed as a limited
partner in any limited partnership, deductions claimed for depiction,
contributions to an IRA or KEOGH retirement plan, alimony payments, and any
amount by which income from long-term capital gains has been reduced in arriving
at adjusted gross income.



2.   The information contained herein is complete and accurate and may be relied
     upon by the  Corporation,  and the undersigned  will notify the Corporation
     immediately  of any material  change in any of such  information  occurring
     prior to the closing, if any, with respect to the purchase of Securities by
     the undersigned or any co-purchaser.

3.   There are no suits, pending litigation,  or claims against the  undersigned
     that could  materially  affect the net worth of the undersigned as reported
     in this Questionnaire.

4.   The undersigned acknowledges that there may  occasionally be times when the
     Corporation  determines  that it  must  suspend  the use of the  Prospectus
     forming a part of the Registration  Statement (as such terms are defined in
     the Securities Purchase Agreement to which this Questionnaire is attached),
     as set forth in Section 7.2(c) of the Securities  Purchase  Agreement.  The
     undersigned  is aware  that,  in such  event,  the  Securities  will not be
     subject to ready  liquidation,  and that any  Securities  purchased  by the
     undersigned  would have to be held  during  such  suspension.  The  overall
     commitment  of  the  undersigned  to  investments  which  are  not  readily
     marketable  is not  excessive  in view of the  undersigned's  net worth and
     financial circumstances,  and any purchase of the Securities will not cause
     such  commitment to become  excessive.  The undersigned is able to bear the
     economic risk of an investment in the Securities.

5.   The undersigned  has  carefully  considered the potential risks relating to
     the  Corporation and a purchase of the  Securities,  and fully  understands
     that the Securities are speculative investments which involve a high degree
     of risk of loss of the undersigned's  entire investment.  Among others, the
     undersigned has carefully  considered  each of the risks  identified in the
     Exchange Act Documents.

6.   The  undersigned  has  received  and  carefully  reviewed  the Confidential
     Private  Placement  Memorandum (the "Offering  Memorandum"),  including the
     Exchange Act Documents,  understanding  that each such document  supersedes
     all prior  versions  thereof and any  inconsistent  portions of  previously
     distributed   materials  relating  to  the  Company,   including,   without
     limitation, executive and other summaries and marketing materials regarding
     the  Company  and  the  Securities  that  are  not  part  of  the  Offering
     Memorandum, and has consulted its own advisors, who are not affiliated with
     the  Company or the  Placement  Agent,  with  respect to the  undersigned's
     proposed  investment in the Company.  The undersigned has not relied on any
     other  information  provided to it by the Company or the Placement Agent or
     any of  their  respective  affiliates  (or any of its or  their  respective
     agents or  representatives).  Based on such  review,  the  undersigned  has
     determined  that the  Securities  being  purchased  herein  are a  suitable
     investment  for  the  undersigned.   The  undersigned  recognizes  that  an
     investment  in the  Company  involves  certain  risks and it has taken full
     cognizance  of and  understands  all of the risk  factors  relating  to the
     purchase of Securities.  The  undersigned has such knowledge and experience
     in financial  and business  matters  that it is capable of  evaluating  the
     merits and risks of an  investment  in the  Company  and making an informed
     investment  decision with respect thereto.  The undersigned is able to bear
     the substantial  economic risks related to an investment in the Company for
     an indefinite period of time, has no need for liquidity in such investment,
     and, at the present time,  can afford a complete  loss of such  investment.
     With  respect to tax and other  economic  considerations  involved  in this
     subscription,  the  undersigned  is not relying on the Company or Placement
     Agent or their  respective  affiliates  (or any of its or their  agents  or
     representatives).

7.   The undersigned  has  had  the  opportunity  to ask  questions  and receive
     answers concerning the Company and the terms and conditions of the offering
     of  Securities,  as  well  as the  opportunity  to  obtain  any  additional
     information  necessary to verify the accuracy of  information  furnished in
     connection  with such  offering  which the Company or the  Placement  Agent
     possesses or can acquire without unreasonable effort or expense.

8.   No oral or written representations  have been made to the undersigned other
     than  those set forth in the  Offering  Memorandum,  and no oral or written
     information furnished to the undersigned or the undersigned's adviser(s) in
     connection  with  this  Offering  were in any  way  inconsistent  with  the
     information stated in the Offering Memorandum.

9.   The undersigned  is  not  subscribing  for  Securities  as a  result  of or
     subsequent to any  advertisement,  article,  notice or other  communication
     published in any  newspaper,  magazine,  or similar media or broadcast over
     television or radio, or presented at any investment seminar or meeting open
     to the public.

10.  If the undersigned is a partnership, corporation, limited liability company
     or trust, such partnership, corporation, limited liability company or trust
     has not been formed for the specific  purpose of acquiring such Securities,
     unless each  beneficial  owner of such entity is qualified as an accredited
     investor  within  the  meaning  of  Rule  501(a)  of  Regulation  D and has
     submitted information substantiating such individual qualification.






     IN WITNESS WHEREOF,  the undersigned has executed this  Questionnaire  this
_____ day of _______,  2004,  and  declares  under oath that it is truthful  and
correct.





                          ------------------------------------------------------
                          Print Name


                           By:
                              --------------------------------------------------
                                      Signature

                        Title:
                              --------------------------------------------------
                              (required for any purchaser that is a corporation,
                              partnership, trust or other entity)









                               DISCLOSURE SCHEDULE







Schedule 4.4
- ------------

A.   1,500 shares of common  stock  issued on January  22,  2004  pursuant  to a
     consulting agreement. The shares are restricted as to trading for one year.

B.   An agreement entered into with the Company's  President and COO whereby for
     every share of stock purchased by the  President  and COO, the Company will
     grant him one share of stock up to 50,000  shares over an 18 month  period.
     The granted shares are restricted as to trading or transfer during the term
     of his contract.

C.   24,000 shares which may be issued over the next twelve months pursuant to a
     consulting agreement.





[Company Letterhead]


                                 _________, 2004




         Re:      ThermoGenesis Corp.; Registration Statement on Form S-3
                  -------------------------------------------------------

Dear Selling Shareholder:

     Enclosed please find five (5) copies of a prospectus dated  ______________,
____ (the  "Prospectus")  for your use in reselling your shares of common stock,
$0.001 par value (the  "Securities"),  of  ThermoGenesis  Corp. (the "Company"),
under the Company's  Registration Statement on Form S-3 (Registration No. 333- )
(the  "Registration  Statement"),  which  has  been  declared  effective  by the
Securities  and  Exchange  Commission.   As  a  selling  shareholder  under  the
Registration  Statement,  you  have  an  obligation  to  deliver  a copy  of the
Prospectus to each purchaser of your Securities,  either directly or through the
broker-dealer who executes the sale of your Securities.

     The  Company  is  obligated  to notify  you in the event  that it  suspends
trading under the  Registration  Statement in  accordance  with the terms of the
Securities  Purchase  Agreement  between the Company and you.  During the period
that the Registration Statement remains effective and trading thereunder has not
been suspended, you will be permitted to sell your Securities which are included
in  the  Prospectus  under  the  Registration  Statement.  Upon  a  sale  of any
Securities under the Registration Statement, you or your broker will be required
to deliver to the Transfer  Agent,  Computershare  Trust Company,  Inc. (1) your
restricted stock  certificate(s)  representing the Securities,  (2) instructions
for transfer of the Securities sold, and (3) a  representation  letter from your
broker, or from you if you are selling in a privately negotiated transaction, or
from such other appropriate party, in the form of Exhibit A attached hereto (the
"Representation Letter"). The Representation Letter confirms that the Securities
have been sold pursuant to the Registration  Statement and in a manner described
under the caption "Plan of  Distribution"  in the  Prospectus and that such sale
was made in  accordance  with all  applicable  securities  laws,  including  the
prospectus delivery requirements.

     Please note that you are under no obligation to sell your Securities during
the registration period. However, if you do decide to sell, you must comply with
the requirements  described in this letter or otherwise applicable to such sale.
Your failure to do so may result in liability  under the Securities Act of 1933,
as amended, and the Securities Exchange Act of 1934, as amended. Please remember
that all sales of your  Securities  must be carried  out in the manner set forth
under the caption "Plan of Distribution" in the Prospectus if you sell under the
Registration Statement. The Company may require an opinion of counsel reasonably
satisfactory  to the Company if you choose  another  method of sale.  You should
consult  with your own  legal  advisor(s)  on an  ongoing  basis to ensure  your
compliance with the relevant securities laws and regulations.

     In order to maintain  the accuracy of the  Prospectus,  you must notify the
undersigned  upon the sale,  gift, or other  transfer of any  Securities by you,
including the number of Securities  being  transferred,  and in the event of any
other  change  in the  information  regarding  you  which  is  contained  in the
Prospectus.  For example,  you must notify the undersigned if you enter into any
arrangement  with a broker-dealer  for the sale of shares through a block trade,
special offering,  exchange distribution or secondary distribution or a purchase
by a  broker-dealer.  Depending  on the  circumstances,  such  transactions  may
require  the filing of a  supplement  to the  prospectus  in order to update the
information  set  forth  under  the  caption  "Plan  of   Distribution"  in  the
Prospectus.


     Should you need any additional copies of the Prospectus, or if you have any
questions  concerning the foregoing,  please write to me at ThermoGenesis Corp.,
2711 Citrus Road, Rancho Cordova, CA 95742. Thank you.

                                       Sincerely,

                                       Renee M. Ruecker, Chief Financial Officer
                                       ThermoGenesis Corp.







                                    Exhibit A

                         CERTIFICATE OF SUBSEQUENT SALE

Computershare Trust Company, Inc.
Post Office Box 1596
Denver, Colorado 80201-1596


          RE:  Sale of  Shares  of  Common  Stock of  ThermoGenesis  Corp.  (the
               "Company")   pursuant    to    the   Company's  Prospectus  dated
               _____________, 2004(the "Prospectus")

Dear Sir/Madam:

     The undersigned hereby certifies,  in connection with the sale of shares of
Common Stock of the Company included in the table of Selling Shareholders in the
Prospectus,  that the undersigned has sold the shares pursuant to the Prospectus
and in a manner  described  under  the  caption  "Plan of  Distribution"  in the
Prospectus  and that such sale complies with all securities  laws  applicable to
the  undersigned,   including,   without  limitation,  the  Prospectus  delivery
requirements of the Securities Act of 1933, as amended.

Selling Shareholder (the beneficial owner):
                                           -------------------------------------

Record Holder (e.g., if held in name of nominee):
                                                  ------------------------------

Restricted Stock Certificate No.(s):
                                     -------------------------------------------

Number of Shares Sold:
                       ---------------------------------------------------------

Date of Sale:
              ------------------------------------------------------------------

     In the event  that you  receive a stock  certificate(s)  representing  more
shares of Common Stock than have been sold by the  undersigned,  then you should
return to the  undersigned a newly issued  certificate for such excess shares in
the name of the Record Holder and BEARING A  RESTRICTIVE  LEGEND.  Further,  you
should place a stop transfer on your records with regard to such certificate.

                                       Very truly yours,

Dated:                                 By:
       ---------------------              --------------------------------------

                                       Print Name:
                                                  ------------------------------

                                       Title:
                                             -----------------------------------

cc:      ThermoGenesis Corp.
         2711 Citrus Road
         Rancho Cordova, CA 95742