Document:

Exhibit 10.23

                                    EXHIBIT A

                                     FORM OF
                           HEALTH SCIENCES GROUP, INC.

                             SUBSCRIPTION AGREEMENT

Health Sciences Group, Inc.
6080 Center Drive, 6th floor
Los Angeles, CA 90045
Attn:

Ladies and Gentlemen:

                  1. Subscription. The undersigned (the "Purchaser"),  intending
to be legally bound,  hereby agrees to purchase from Health Sciences Group, Inc.
(the  "Company")  investment  units (the "Units") in the amount set forth on the
signature  page  hereof.  Each Unit  consists of (i) one share of the  Company's
Series A Convertible  Preferred Stock, par value $0.001 per share (the "Shares")
having the  designations,  rights,  privileges  set forth in the  Certificate of
Designations  annexed to the Memorandum (as defined below) as Exhibit B and (ii)
a warrant (the  "Warrants," and together with the Shares,  the  "Securities") to
purchase one share of common stock of the Company ("Common Stock"),  in the form
of Exhibit C and subject to the  Registration  Rights  Agreement  in the form of
Exhibit D attached to the Memorandum.  This  subscription is submitted to you in
accordance  with and  subject  to the terms  and  conditions  described  in this
Subscription  Agreement  and the Private  Placement  Memorandum  of the Company,
dated July 15, 2003, as amended or supplemented from time to time, including all
attachments, schedules and exhibits thereto (the "Memorandum"),  relating to the
offering (the  "Offering") by the Company of a minimum of $750,000 (the "Minimum
Amount")  and a maximum  of  $1,600,000  in  aggregate  purchase  price of Units
($2,000,000 if the Company exercises its right as set forth in the Memorandum to
increase the size of the  Offering).  The purchase price per Unit shall be equal
to the lower of (i)  $0.85,  (ii) the  average  closing  bid price of the Common
Stock during the five trading days immediately preceding a closing date or (iii)
the closing bid price of the Common Stock on the trading day preceding a closing
date.

                  The terms of the Offering are more completely described in the
Memorandum and such terms are  incorporated  herein in their  entirety.  Certain
terms used but not otherwise  defined herein shall have the respective  meanings
provided in the Memorandum.

                  2. Payment.  The Purchaser  encloses  herewith a check payable
to, or will  immediately make a wire transfer payment to "Health Sciences Group,
Inc." in the full amount of the  purchase  price of the Units  being  subscribed
for. Such funds will be held for the Purchaser's  benefit,  and will be returned
promptly,  without interest,  penalty, expense or deduction if this Subscription
Agreement is not accepted by the Company, the Offering is terminated pursuant to
its  terms or by the  Company,  or the  Minimum  Amount  of  Units is not  sold.
Together with the check for, or wire transfer of, the full purchase  price,  the
Purchaser  is  delivering  a  completed  and  executed  signature  page  of this
Subscription Agreement.

                  3. Acceptance of Subscription.  The Purchaser  understands and
agrees that the Company reserves the right to accept or reject this or any other
subscription  for Units, in whole or in part, and in any order,  notwithstanding
prior receipt by the Purchaser of notice of acceptance of this subscription. The
Company shall have no obligation  hereunder  until the Company shall execute and
deliver to the Purchaser an executed  copy of this  Subscription  Agreement.  If
this  subscription  is rejected in whole or the  Offering is  terminated  or the
Minimum  Amount is not raised,  all funds  received from the  Purchaser  will be
returned without interest,  penalty, expense or deduction, and this Subscription

                                       1
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Agreement  shall  thereafter  be  of  no  further  force  or  effect.   If  this
subscription  is rejected in part, and in any order,  the funds for the rejected
portion of this subscription will be returned without interest, penalty, expense
or deduction,  and this  Subscription  Agreement will continue in full force and
effect to the extent this subscription was accepted.

                  4.  Representations  and  Warranties.   The  Purchaser  hereby
represents, warrants, acknowledges and agrees as follows:

                           (a)  Neither  the  Securities,  nor the shares of the
Common Stock issuable upon  conversion or exercise of the Securities and offered
pursuant to the Memorandum,  are registered under the Securities Act of 1933, as
amended (the  "Securities  Act"),  or any state  securities  laws. The Purchaser
understands  that the  offering  and sale of the Units is  intended to be exempt
from  registration  under the Securities  Act, by virtue of Section 4(2) thereof
and the provisions of Regulation D promulgated thereunder,  based, in part, upon
the  representations,  warranties and  agreements of the Purchaser  contained in
this Subscription Agreement;

                           (b)  The  Purchaser  and  the  Purchaser's  attorney,
accountant,  purchaser  representative and/or tax advisor, if any (collectively,
the "Advisors"),  have received the Memorandum and all other documents requested
by the Purchaser,  have carefully  reviewed them and understand the  information
contained  therein,  and the Purchaser and the  Advisors,  if any,  prior to the
execution of this  Subscription  Agreement,  have had access to the same kind of
information  which would be available in a registration  statement  filed by the
Company under the Securities Act;

                           (c) Neither the  Securities  and Exchange  Commission
nor any  state  securities  commission  has  approved  the  Units  or any of the
Securities  included in the Units or Common Stock  issuable  upon  conversion or
exercise  thereof,  or passed  upon or  endorsed  the merits of the  Offering or
confirmed  the  accuracy  or  determined  the  adequacy of the  Memorandum.  The
Memorandum  has not been  reviewed  by any  Federal,  state or other  regulatory
authority;

                           (d) All  documents,  records and books  pertaining to
the investment in the Units (including, without limitation, the Memorandum) have
been made available for inspection by the Purchaser and the Advisors, if any;

                           (e) The Purchaser and the Advisors,  if any, have had
a reasonable  opportunity to ask questions of and receive  answers from a person
or persons acting on behalf of the Company  concerning the offering of the Units
and the business,  financial  condition,  results of operations and prospects of
the Company,  and all such questions have been answered to the full satisfaction
of the Purchaser and the Advisors, if any;

                           (f) In evaluating the suitability of an investment in
the  Company,  the  Purchaser  has not relied upon any  representation  or other
information (oral or written) other than as stated in the Memorandum;

                           (g) The Purchaser is unaware of, is in no way relying
on, and did not become aware of the offering of the Units through or as a result
of, any form of general solicitation or general advertising  including,  without
limitation, any article, notice,  advertisement or other communication published
in any  newspaper,  magazine or similar  media or broadcast  over  television or
radio,  in  connection  with  the  offering  and  sale of the  Units  and is not
subscribing  for Units and did not  become  aware of the  offering  of the Units
through or as a result of any  seminar or  meeting  to which the  Purchaser  was
invited by, or any  solicitation  of a subscription  by, a person not previously
known to the Purchaser in connection with investments in securities generally;

                           (h) The  Purchaser  has taken no action  which  would
give rise to any claim by any person for brokerage commissions, finders' fees or
the  like  relating  to  this   Subscription   Agreement  or  the   transactions
contemplated  hereby  (other  than  amounts to be paid by the Company to Spencer
Trask Ventures, Inc.);

                           (i) The  Purchaser,  together with its  Advisors,  if
any, have such knowledge and experience in financial, tax, and business matters,
and, in particular,  investments in securities,  so as to enable them to utilize
the  information  made available to them in connection  with the offering of the
Units to  evaluate  the merits and risks of an  investment  in the Units and the
Company and to make an informed investment decision with respect thereto;

<PAGE>

                           (j) The  Purchaser  is not  relying on the Company or
any of its  employees  or agents with  respect to the legal,  tax,  economic and
related  considerations  as to an investment in the Units, and the Purchaser has
relied on the advice of, or has consulted with, only his own Advisors;

                           (k) The  Purchaser is acquiring  the Units solely for
the  Purchaser's  own  account  for  investment  and not with a view to  resale,
assignment or  distribution  thereof,  in whole or in part. The Purchaser has no
agreement  or  arrangement,  formal  or  informal,  with any  person  to sell or
transfer all or any part of the Units,  Securities  contained  in the Units,  or
Common Stock issuable upon conversion or exercise thereof, and the Purchaser has
no plans to enter into any such agreement or arrangement;

                           (l) The Purchaser must bear the substantial  economic
risks of the investment in the Units indefinitely because none of the securities
included in the Units may be sold,  hypothecated or otherwise disposed of unless
subsequently registered under the Securities Act and applicable state securities
laws or an exemption  from such  registration  is  available.  Legends  shall be
placed on the securities  included in the Units to the effect that they have not
been registered under the Securities Act or applicable state securities laws and
appropriate  notations  thereof will be made in the Company's stock books.  Stop
transfer  instructions  will be placed with the transfer agent of the securities
constituting the Units.  Although the Company has the obligation to register for
resale the shares of Common  Stock  underlying  the  Securities  (see  Exhibit A
hereto),  there can be no  assurance  that such  registration  will be completed
within the time frames required by the Company, or at all. It is not anticipated
that there will be any market for resale of the Units or Securities  included in
the Units or the capital stock issuable upon conversion or exercise thereof, and
such  Units  and  shares  will  not be  freely  transferable  at any time in the
foreseeable future;

                           (m) The Purchaser has adequate means of providing for
such Purchaser's  current financial needs and foreseeable  contingencies and has
no need for liquidity of the investment in the Units for an indefinite period of
time;

                           (n) The  Purchaser is aware that an investment in the
Units  involves a number of very  significant  risks and has carefully  read and
considered  the  matters  set forth  under the  caption  "Risk  Factors"  in the
Memorandum and otherwise referred to in the Memorandum;

                           (o) The Purchaser meets the  requirements of at least
one of the  suitability  standards for an "accredited  investor" as set forth on
the Accredited Investor Certification contained herein;

                           (p)  The   Purchaser:   (i)  if  a  natural   person,
represents  that the  Purchaser has reached the age of 21 and has full power and
authority  to execute  and deliver  this  Subscription  Agreement  and all other
related  agreements or certificates  and to carry out the provisions  hereof and
thereof;  (ii) if a  corporation,  partnership,  limited  liability  company  or
partnership,   association,   joint   stock   company,   trust,   unincorporated
organization  or other  entity,  such  entity was not  formed  for the  specific
purpose of acquiring the Units, such entity is duly organized,  validly existing
and in good  standing  under  the  laws of the  state of its  organization,  the
consummation of the transactions  contemplated hereby is authorized by, and will
not result in a violation  of state law or its  charter or other  organizational
documents,  such entity has full power and authority to execute and deliver this
Subscription  Agreement and all other related  agreements or certificates and to
carry  out the  provisions  hereof  and  thereof  and to  purchase  and hold the
securities   constituting   the  Units,  the  execution  and  delivery  of  this
Subscription  Agreement has been duly authorized by all necessary  action,  this
Subscription  Agreement  has been duly  executed and delivered on behalf of such
entity and is a legal, valid and binding obligation of such entity; and (iii) if
executing this Subscription Agreement in a representative or fiduciary capacity,
it has full  power and  authority  to  execute  and  deliver  this  Subscription
Agreement in such capacity and on behalf of the  subscribing  individual,  ward,
partnership,  trust, estate,  corporation,  limited liability company or limited
liability partnership,  or other entity for whom the Purchaser is executing this
Subscription Agreement, and such individual,  ward, partnership,  trust, estate,
corporation,  limited liability company or partnership, or other entity has full
right and power to perform pursuant to this  Subscription  Agreement and make an
investment in the Company,  and that this Subscription  Agreement  constitutes a
legal,  valid and binding  obligation of such entity. The execution and delivery
of this  Subscription  Agreement  will not  violate or be in  conflict  with any
order,  judgment,  injunction,  agreement or  controlling  document to which the
Purchaser is a party or by which it is bound;

<PAGE>

                           (q) The Purchaser  and the Advisors,  if any, had the
opportunity to obtain any additional information,  to the extent the Company had
such  information  in its  possession or could  acquire it without  unreasonable
effort or expense, necessary to verify the accuracy of the information contained
in the Memorandum and all documents  received or reviewed in connection with the
purchase of the Units and have had the  opportunity to have  representatives  of
the Company  provide them with such additional  information  regarding the terms
and  conditions  of this  particular  investment  and the  financial  condition,
results of operations,  business and prospects of the Company deemed relevant by
the Purchaser or the Advisors,  if any, and all such requested  information,  to
the extent the Company had such  information  in its possession or could acquire
it  without  unreasonable  effort  or  expense,  has been  provided  to its full
satisfaction;

                           (r) The Purchaser  represents to the Company that any
information which the undersigned has heretofore furnished or furnishes herewith
to the Company is complete and accurate and may be relied upon by the Company in
determining the availability of an exemption from registration under Federal and
state securities laws in connection with the offering of securities as described
in the Memorandum.  The Purchaser  further  represents and warrants that it will
notify and supply  corrective  information to the Company  immediately  upon the
occurrence of any change therein  occurring  prior to the Company's  issuance of
the securities contained in the Units;

                           (s) The  Purchaser  has a  sufficient  net  worth  to
sustain a loss of its entire  investment in the Company in the event such a loss
should occur. The Purchaser's  overall  commitment to investments  which are not
readily  marketable  is not  excessive  in view of its net worth  and  financial
circumstances  and the purchase of the Units will not cause such  commitment  to
become excessive. The investment is a suitable one for the Purchaser;

                           (t) No  oral or  written  representations  have  been
made,  or  oral  or  written  information  furnished,  to the  Purchaser  or the
Advisors,  if any,  in  connection  with the  offering of the Units or as to the
Company, which are in any way inconsistent with the information contained in the
Memorandum;

                           (u) THE  SECURITIES  OFFERED  HEREBY  HAVE  NOT  BEEN
REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED,  OR THE SECURITIES LAWS
OF CERTAIN STATES AND ARE BEING OFFERED AND SOLD IN RELIANCE ON EXEMPTIONS  FROM
THE  REGISTRATION  REQUIREMENTS  OF SAID ACT AND SUCH LAWS.  THE  SECURITIES ARE
SUBJECT TO RESTRICTIONS ON TRANSFERABILITY AND RESALE AND MAY NOT BE TRANSFERRED
OR  RESOLD  EXCEPT  AS  PERMITTED  UNDER  SAID ACT AND  SUCH  LAWS  PURSUANT  TO
REGISTRATION OR EXEMPTION  THEREFROM.  ALTHOUGH THE COMPANY HAS AN OBLIGATION TO
REGISTER FOR RESALE THE SHARES OF COMMON STOCK UNDERLYING THE SECURITIES,  THERE
CAN BE NO ASSURANCE  THAT SUCH  REGISTRATION  WILL BE COMPLETED  WITHIN THE TIME
FRAMES REQUIRED, OR AT ALL. THE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED
BY THE SECURITIES AND EXCHANGE  COMMISSION,  ANY STATE SECURITIES  COMMISSION OR
ANY OTHER REGULATORY AUTHORITY, NOR HAVE ANY OF THE FOREGOING AUTHORITIES PASSED
UPON OR ENDORSED THE MERITS OF THIS  OFFERING OR THE ACCURACY OR ADEQUACY OF THE
MEMORANDUM. ANY REPRESENTATION TO THE CONTRARY IS UNLAWFUL.

                  5.  Irrevocability;   Binding  Effect.  The  Purchaser  hereby
acknowledges  and agrees that the  subscription  hereunder is irrevocable by the
Purchaser,  except as required by  applicable  law,  and that this  Subscription
Agreement  shall  survive the death or  disability of the Purchaser and shall be
binding upon and inure to the benefit of the parties and their heirs, executors,
administrators,  successors, legal representatives and permitted assigns. If the
Purchaser is more than one person,  the  obligations of the Purchaser  hereunder
shall be joint  and  several  and the  covenants,  agreements,  representations,
warranties,  and  acknowledgments  herein  shall be  deemed to be made by and be
binding   upon  each  such   person   and  such   person's   heirs,   executors,
administrators, successors, legal representatives and permitted assigns.

                  6.  Modification.  This  Subscription  Agreement  shall not be
modified  or  waived  except by an  instrument  in  writing  signed by the party
against whom any such modification or waiver is sought.

                  7.  Notices.  Any notice or other  communication  required  or
permitted  to be given  hereunder  shall be in  writing  and  shall be mailed by
certified mail, return receipt requested,  sent by nationwide  overnight courier
or  delivered  against  receipt to the party to whom it is to be given (a) if to

<PAGE>

Company,  at the address set forth  above,  or (b) if to the  Purchaser,  at the
address set forth on the  signature  page hereof  (or, in either  case,  to such
other address as the party shall have  furnished in writing in  accordance  with
the  provisions of this  Section).  Any notice or other  communication  given by
certified  mail  shall be deemed  given at the time that it is signed for by the
recipient  except for a notice  changing a party's address which shall be deemed
given at the time of receipt thereof. Any notice or other communication given by
nationwide  overnight  courier  shall be  deemed  given  the next  business  day
following being deposited with such courier.

                  8. Assignability.  This Subscription Agreement and the rights,
interests and  obligations  hereunder are not  transferable or assignable by the
Purchaser and the transfer or assignment of the Units,  the components  thereof,
or the  underlying  securities  shall  be  made  only  in  accordance  with  all
applicable laws.

                  9.  Applicable  Law. This  Agreement  shall be governed by and
construed  in  accordance  with the laws of the  State of New York  relating  to
contracts entered into and to be performed wholly within such State.

                  10. Blue Sky  Qualification.  The purchase of Units under this
Subscription   Agreement  is  expressly  conditioned  upon  the  exemption  from
qualification  of the offer and sale of the Units from  applicable  Federal  and
state  securities  laws.  The  Company  shall not be  required  to qualify  this
transaction   under  the  securities  laws  of  any  jurisdiction   and,  should
qualification  be  necessary,  the Company  shall be  released  from any and all
obligations to maintain its offer, and may rescind any sale contracted,  in such
jurisdiction.

                  11. Use of Pronouns.  All pronouns and any variations  thereof
used  herein  shall  be  deemed  to refer to the  masculine,  feminine,  neuter,
singular  or plural as the  identity  of the person or persons  referred  to may
require.

                  12.  Preemptive  Rights.  (a)  Following  acceptance  of  this
Subscription  Agreement by the Company and a closing at which a sale of Units to
Purchaser is  consummated,  the Company  hereby  grants to the Purchaser a right
(the "Preemptive Right") to purchase all or any part of the Purchaser's pro rata
shares of any "New  Securities"  (as defined in Section  12(b)) that the Company
may,  from time to time,  propose  to sell and  issue in a  private  transaction
solely  for  cash.  Such pro rata  share for  Purchaser,  for  purposes  of this
Preemptive  Right, is the ratio of (x) the number of shares of Common Stock then
held by  Purchaser  immediately  prior  to the  issuance  of the New  Securities
(assuming the full  conversion of any Shares and full exercise of the Warrants),
to (y) the total  number of shares of Common  Stock of the  Company  outstanding
immediately  prior to the issuance of the New Securities (after giving effect to
the exercise and/or conversion, as the case may be, of all Shares and Warrants).

                  (b) Definition. For purposes of this Section, "New Securities"
shall mean any Common  Stock or preferred  stock of the Company,  whether or not
authorized  on the date  hereof,  and  rights,  options or  warrants to purchase
Common Stock or preferred  stock and securities of any type whatsoever that are,
or may become,  convertible into or exercisable or exchangeable for Common Stock
or preferred stock;  PROVIDED,  HOWEVER,  that "New Securities" does not include
the following:

                  (i)  shares of  capital  stock of the  Company  issuable  upon
conversion  or  exercise  of any  currently  outstanding  securities  or any New
Securities  issued in accordance with this Agreement or pursuant to the Offering
of Units;

                  (ii) shares or options or warrants for Common Stock granted to
officers,  directors and employees of, and consultants to, the Company  pursuant
to stock option or purchase plans or other compensatory  agreements  approved by
the Board of Directors of the Company;

                  (iii)  shares of Common  Stock or  preferred  stock  issued in
connection with any pro rata stock split, stock dividend or  recapitalization by
the Company;

                  (iii) securities issued pursuant to the acquisition of another
         corporation or entity by the Company by consolidation, merger, purchase

<PAGE>

         of all or substantially all of the assets,  or other  reorganization in
         which  the  Company  acquires,  in a single  transaction  or  series of
         related  transactions,  all or substantially  all of the assets of such
         other corporation or entity in transaction(s)  approved by the Board of
         Directors of the Company, provided that the stockholders of the Company
         prior to such  transaction(s)  own 50% or more of the voting  power and
         equity of the Company following such transaction(s); and

                  (iv)  securities  issuable upon  conversion or exercise of the
         securities set forth in paragraphs (i) - (iv) above.

         (c) Procedures.  In the event that the Company proposes to undertake an
issuance of New Securities for cash, it shall give each Purchaser written notice
(the "Notice") of its  intention,  describing  the type of New  Securities,  the
price,  and the general terms upon which the Company proposes to issue the same.
Purchaser  shall have twenty (20)  business days after receipt of such notice to
agree  to  purchase  all or any  portion  of its pro  rata  share  of  such  New
Securities  at the price and upon the terms  specified  in the  notice by giving
written notice to the Company and stating therein the quantity of New Securities
to be purchased.  In the event that any New Securities subject to the Preemptive
Right are not  purchased by the  Purchaser  within the twenty (20)  business day
period  specified  above,  the Company shall have ninety (90) days thereafter to
sell (or enter into an  agreement  pursuant to which the sale of New  Securities
that had been subject to the Preemptive Right shall be closed, if at all, within
sixty (60) days from the date of said agreement) the New Securities with respect
to which the  rights of the  Purchaser  were not  exercised  at a price and upon
terms,  including manner of payment, no more favorable to the purchasers thereof
than specified in the Notice.  In the event the Company has not sold all offered
New  Securities  within  such  ninety  (90) day  period  (or sold and issued New
Securities in accordance with the foregoing within sixty (60) days from the date
of such  agreement),  the  Company  shall not  thereafter  issue or sell any New
Securities,  without  first  complying  with the  procedures  set  forth in this
Section.

                  13.      Miscellaneous.

                           (a) This  Agreement  and its exhibits  and  schedules
constitutes  the entire  agreement  between the  Purchaser  and the Company with
respect to the subject  matter hereof and  supersedes  all prior oral or written
agreements and  understandings,  if any,  relating to the subject matter hereof.
The terms and  provisions of this  Agreement  may be waived,  or consent for the
departure  therefrom  granted,  only by a written document executed by the party
entitled to the benefits of such terms or  provisions.  The parties  acknowledge
that the  provisions of Exhibit D to the  Memorandum,  the  Registration  Rights
Agreement are incorporated by reference and made a part hereof.

                           (b)   The    Purchaser's    covenants,    agreements,
representations  and  warranties  made  in  this  Agreement  shall  survive  the
execution and delivery  hereof and delivery of the  Securities  contained in the
Units.

                           (c) Each of the parties hereto shall pay its own fees
and expenses  (including the fees of any attorneys,  accountants,  appraisers or
others  engaged  by such  party)  in  connection  with  this  Agreement  and the
transactions  contemplated  hereby whether or not the transactions  contemplated
hereby are consummated.

                           (d) This  Agreement  may be  executed  in one or more
counterparts,  each of which shall be deemed an original, but all of which shall
together constitute one and the same instrument.

                           (e) Each  provision  of this  Subscription  Agreement
shall be considered separable and, if for any reason any provision or provisions
hereof  are  determined  to be invalid  or  contrary  to  applicable  law,  such
invalidity  or  illegality  shall not  impair  the  operation  of or affect  the
remaining portions of this Subscription Agreement.

                           (f)  Paragraph  titles are for  descriptive  purposes
only and shall not control or alter the meaning of this  Subscription  Agreement
as set forth in the text.

                           (g) Following  the closing of at least  $1,250,000 in
aggregate  purchase price of Units, so long as any Shares are  outstanding,  the
holders of a majority  of the  then-outstanding  Shares  shall have the right to
elect one member of the Company's Board of Directors.  The Company hereby agrees
with each  Purchaser  that such election  shall take place within 45 days of the
closing of $1,250,000 in aggregate purchase price of Units. Immediately prior to

<PAGE>

such  closing,  each of Fred  Tannous  and  Bill  Glaser  shall  deliver  voting
agreements  agreeing to vote their shares in favor of such nominee designated by
the Purchasers.

                           (h) The undersigned understands and acknowledges that
there may be  multiple  closings  for the  Offering  and that the Unit Price (as
defined in the  Memorandum)  will be  determined  at each  closing  based on the
pricing  formula  described  in the  Memorandum.  Accordingly,  the  undersigned
acknowledges and consents to the following:  (i) while the dividend rate for all
Shares  purchased in the Offering will be the same, the amount of dividends paid
to  purchasers  on the Shares will be different  based on the Unit Price at each
closing and (ii) the liquidation  preference for the Shares will also vary based
on the Unit Price at each closing.

<PAGE>

                        ACCREDITED INVESTOR CERTIFICATION
                         Initial the appropriate item(s)

THE  UNDERSIGNED  FURTHER  REPRESENTS  AND  WARRANTS AS  INDICATED  BELOW BY THE
UNDERSIGNED'S INITIALS:

A.       INDIVIDUAL  INVESTORS:  (Please  initial one or more of the  following,
         four statements)

1.       I  certify  that  I am  an  accredited  investor  because  I  have  had
         individual income (exclusive of any income earned by my spouse) of more
         than  $200,000  in each of the most  recent two years and I  reasonably
         expect to have an  individual  income in  excess  of  $200,000  for the
         current year.

2.       I certify  that I am an  accredited  investor  because I have had joint
         income  with my spouse in excess of $300,000 in each of the most recent
         two years and reasonably  expect to have joint income with my spouse in
         excess of $300,000 for the current year.

3.       I certify that I am an accredited investor because I have an individual
         net  worth,  or my spouse  and I have a joint net  worth,  in excess of
         $1,000,000.

4.       I am a director or executive officer of Health Sciences Group, Inc.

5.       I have  individual net worth or my spouse and I have joint net worth of
         over $ 5,000,000.

B.       PARTNERSHIPS,  CORPORATIONS,  TRUSTS OR OTHER ENTITIES: (Please initial
         one  of  the  following  seven  statements).   The  undersigned  hereby
         certifies that it is an accredited investor because it is:

1.       an employee benefit plan whose total assets exceed $5,000,000;

2.       an employee benefit plan whose investments decisions are made by a plan
         fiduciary  which is either a bank,  savings and loan  association or an
         insurance company (as defined in Section 3(a) of the Securities Act) or
         an investment adviser registered as such under the Investment  Advisers
         Act of 1940;

3.       a  self-directed   employee  benefit  plan,   including  an  Individual
         Retirement  Account,  with investment  decisions made solely by persons
         that are accredited investors;

4.       an organization  described in Section 501(c)(3) of the Internal Revenue
         Code of 1986,  as  amended,  not  formed  for the  specific  purpose of
         acquiring the Units, with total assets in excess of $5,000,000;

5.       a  corporation,   partnership,   limited  liability  company,   limited
         liability  partnership,  other entity or similar  business  trust,  not
         formed for the  specific  purpose of  acquiring  the Units,  with total
         assets excess of $5,000,000;

6.       a trust,  not formed for the specific  purpose of acquiring  the Units,
         with total assets exceed  $5,000,000,  whose  purchase is directed by a
         person who has such  knowledge and experience in financial and business
         matters  that he is  capable of  evaluating  the merits and risks of an
         investment in the Units; or

7.       an entity  (including  a  revocable  grantor  trust  but  other  than a
         conventional  trust) in which each of the equity owners qualifies as an
         accredited investor under items A(1), (2) or (3) or item B(1) above.

<PAGE>

                           Health Sciences Group, Inc.
                                SIGNATURE PAGE TO
                             SUBSCRIPTION AGREEMENT

         EXECUTION  OF THIS  AGREEMENT  BY ANY  PURCHASER  SHALL  BE  DEEMED  TO
CONSTITUTE  EXECUTION OF THE  REGISTRATION  RIGHTS  AGREEMENT  ANNEXED HERETO AS
EXHIBIT A BY SUCH PURCHASER.

         Subscriber hereby elects to subscribe under the Subscription  Agreement
for a total of $__________ of Unit(s) (NOTE: to be completed by subscriber):

Date (NOTE:  To be  completed  by  subscriber):  _______________,  2003.  If the
purchaser  is an  INDIVIDUAL,  or if the  purchasers  are  INDIVIDUALS  who have
purchased as JOINT  TENANTS,  as JOINT  TENANTS with RIGHT OF  SURVIVORSHIP,  as
TENANTS IN COMMON, or as COMMUNITY PROPERTY:

---------------------------                     ---------------------------
Print Names(s)                                  Social Security Number(s)

---------------------------                     ---------------------------
Signature(s) of Investor(s)                     Joint Signature

                                                ---------------------------
___________________________                     Date
Address

If the purchaser is a PARTNERSHIP, CORPORATION, TRUST, LIMITED LIABILITY COMPANY
or LIMITED LIABILITY PARTNERSHIP:

---------------------------                      ---------------------------
Name of Partnership, Corporation,                Federal Taxpayer
Trust, Limited Liability Company                 Identification Number
or Limited Liability Partnership

Address:

By:___________________________                   ___________________________

Name: ________________________                   State of Organization

Title:________________________

SUBSCRIPTION FOR ____ UNITS ACCEPTED AND AGREED TO this _____ day of _____ 2003.

HEALTH SCIENCES GROUP, INC.

By:__________________________________
Name:
Title:Exhibit 10.24
                                                                 EXHIBIT D

                          REGISTRATION RIGHTS AGREEMENT

         This  Registration  Rights  Agreement  (this  "AGREEMENT")  is made and
entered into as  of______________,  2003,  among Health Sciences Group,  Inc., a
Colorado corporation (the "COMPANY"),  and the purchasers signatory hereto (each
such purchaser is a "PURCHASER" and all such purchasers are,  collectively,  the
"PURCHASERS").

               This Agreement is made pursuant to the Subscription Agreement(s),
dated as of the date hereof  among the Company and each of the  Purchasers  (the
"SUBSCRIPTION AGREEMENT(S)").

               The Company and the Purchasers hereby agree as follows

1. CERTAIN DEFINITIONS.  Capitalized terms used and not otherwise defined herein
that are defined in the  Subscription  Agreements  shall have the meanings given
such  terms  in the  Subscription  Agreements.  As used in this  Agreement,  the
following terms shall have the following respective meanings:

                  "Commission" shall mean the Securities and Exchange Commission
or any other federal agency at the time administering the Securities Act.

                  "Exchange Act" shall mean the Securities Exchange Act of 1934,
as  amended,  or any  similar  successor  federal  statute  and  the  rules  and
regulations thereunder, all as the same shall be in effect from time to time.

                  "Holders"   shall  mean  the   Purchaser  and  any  holder  of
Registrable  Securities  to  whom  the  registration  rights  conferred  by this
Agreement have been transferred.

                  "Registrable  Securities"  shall mean (i) Common Stock held by
the Holders or issued or issuable  upon  conversion  of the  Company's  Series A
Convertible  Preferred Stock (the "Series A Convertible  Preferred Stock"), (ii)
the Warrant Shares,  (iii) the Common Stock issuable upon conversion or exercise
of warrants held by Spencer Trask Ventures, Inc. or its assigns or designees, or
(iv) any Common Stock issued as a dividend or other distribution with respect to
or in exchange for or in  replacement  of the stock  referenced  in (i), (ii) or
(iii) above.

                  The terms "register",  "registered" and  "registration"  shall
refer  to a  registration  effected  by  preparing  and  filing  a  registration
statement  in  compliance  with the  Securities  Act and  applicable  rules  and
regulations thereunder,  and the declaration or ordering of the effectiveness of
such registration statement.

                  "Registration  Expenses"  shall mean all expenses  incurred by
the Company in  compliance  with the  registration  obligation  of the  Company,
including,  without  limitation,  all  registration  and filing  fees,  printing
expenses, fees and disbursements of counsel for the Company.

                  "Restricted  Securities"  shall  mean  the  securities  of the
Company required to bear or bearing the legend set forth in Section 3 hereof.

                  "Selling  Expenses"  shall  mean all  underwriting  discounts,
selling commissions and expense allowances applicable to the sale of Registrable
Securities and all fees and disbursements of counsel for any Holder.

2.  RESTRICTIONS  ON  TRANSFERABILITY.  The Securities and any other  securities
issued in  respect  of the  Securities  upon any stock  split,  stock  dividend,
recapitalization,   merger,  consolidation,  or  similar  event,  shall  not  be
transferred  except  upon the  conditions  specified  in this  Agreement,  which
conditions  are  intended  to  ensure  compliance  with  the  provisions  of the
Securities  Act.  Any  transferee  of such  securities  shall take and hold such
securities  subject to the provisions and upon the conditions  specified in this
Agreement.

3. RESTRICTIVE LEGEND. Each certificate representing the Securities,  the shares
of Common Stock  underlying the Securities  and any other  securities  issued in
respect   of  the   Securities   upon   any   stock   split,   stock   dividend,
recapitalization,   merger,   consolidation  or  similar  event,  shall  (unless

<PAGE>

otherwise permitted or unless the securities evidenced by such certificate shall
have been registered under the Securities Act) be stamped or otherwise imprinted
with a legend  substantially  in the  following  form (in addition to any legend
required under applicable state securities laws):

         THE SECURITIES  REPRESENTED BY THIS  CERTIFICATE HAVE BEEN ACQUIRED FOR
         INVESTMENT  AND HAVE NOT BEEN  REGISTERED  UNDER THE  SECURITIES ACT OF
         1933,  AS  AMENDED  (THE  "ACT") OR ANY  STATE  SECURITIES  LAWS.  SUCH
         SECURITIES  MAY NOT BE SOLD OR OFFERED  FOR SALE IN THE ABSENCE OF SUCH
         REGISTRATION  OR AN OPINION OF COUNSEL  SATISFACTORY TO THE COMPANY AND
         ITS COUNSEL THAT SUCH REGISTRATION IS NOT REQUIRED UNDER THE ACT.

Upon request of Purchaser,  the Company  shall remove the foregoing  legend from
the certificate or issue to such holder a new  certificate  therefor free of any
transfer legend,  if, with such request,  the Company shall have received either
an opinion of counsel or the "no-action"  letter referred to in Section 4 to the
effect  that any  transfer by such holder of the  securities  evidenced  by such
certificate  will not violate the Securities Act and applicable state securities
laws,  unless any such transfer legend may be removed pursuant to Rule 144(k) or
any successor rule, in which case no such opinion or "no-action" letter shall be
required.

The  Company  acknowledges  and agrees  that a  Purchaser  may from time to time
pledge pursuant to a bona fide margin agreement or grant a security  interest in
some or all of the  Registrable  Securities  and, if required under the terms of
such  arrangement,  such Purchaser may transfer  pledged or secured  Registrable
Securities  to the  pledgees or secured  parties.  If required by the  Company's
transfer agent in order to effect a pledge, the Company shall cause its counsel,
at no cost to the  Purchasers,  to issue an opinion of counsel to the  Company's
transfer  agent.  Further,  no notice shall be required of such  pledge.  At the
appropriate  Purchaser's  expense,  the Company  will  execute and deliver  such
reasonable  documentation  as a  pledgee  or  secured  party of  Securities  may
reasonably  request in connection  with a pledge or transfer of the  Registrable
Securities,  including  the  preparation  and filing of any required  prospectus
supplement  under  Rule  424(b)(3)  of the  Securities  Act or other  applicable
provision  of the  Securities  Act to  appropriately  amend the list of  selling
stockholders thereunder.

Certificates   evidencing  shares  of  Common  Stock  underlying  the  Series  A
Convertible  Preferred Stock and Warrants shall not contain any legend (i) while
a registration statement covering the resale of such security is effective under
the Securities  Act, or (ii) following any sale of such shares  pursuant to Rule
144, or (iii) if such shares are eligible for sale under Rule 144(k), or (iv) if
such legend is not required under applicable  requirements of the Securities Act
(including judicial  interpretations  and pronouncements  issued by the staff of
the Commission).  If all or any portion of Series A Convertible  Preferred Stock
or a Warrant is converted or exercised (as  applicable)  at a time when there is
an  effective  registration  statement  to cover the  resale  of the  underlying
shares,  or if such  underlying  shares of Common  Stock may be sold  under Rule
144(k) or if such legend is not otherwise required under applicable requirements
of the  Securities Act (including  judicial  interpretations  thereof) then such
underlying  shares shall be issued free of all legends.  The Company agrees that
following the effective date of the registration  statement required to be filed
hereunder  or at such time as such  legend is no longer  required,  it will,  no
later than three  Trading  Days  following  the  delivery by a Purchaser  to the
Company or the Company's transfer agent of a certificate  representing shares of
Common Stock issued with a restrictive legend,  deliver or cause to be delivered
to such Purchaser a certificate  representing  such shares that is free from all
restrictive  and other  legends.  The Company  may not make any  notation on its
records or give  instructions  to any transfer agent of the Company that enlarge
the restrictions on transfer set forth in this Section.

4. NOTICE OF PROPOSED  TRANSFERS.  The holder of each  certificate  representing
Restricted  Securities  by acceptance  thereof  agrees to comply in all respects
with the  provisions  of this Section 4. Prior to any  proposed  transfer of any
Restricted  Securities,  the holder  thereof  shall give  written  notice to the
Company of such  holder's  intention to effect such  transfer.  Each such notice
shall  describe  the  manner  and  circumstances  of the  proposed  transfer  in
sufficient detail, and shall be accompanied by either (i) if required, a written
opinion of legal counsel to the holder who shall be reasonably  satisfactory  to
the Company,  addressed to the Company, to the effect that the proposed transfer
of the Restricted  Securities  may be effected  without  registration  under the

<PAGE>

Securities  Act or (ii) a "no-action"  letter from the  Commission to the effect
that the distribution of such securities without registration will not result in
a  recommendation  by the staff of the  Commission  that  action  be taken  with
respect  thereto,  whereupon the holder of such Restricted  Securities  shall be
entitled to transfer such Restricted  Securities in accordance with the terms of
the notice delivered by such holder to the Company. The Company will not require
such a legal opinion or "no action" letter (x) in any  transaction in compliance
with Rule 144  promulgated  under the Securities  Act, (y) in any transaction in
which the Purchaser distributes Restricted Securities solely to its stockholders
on a pro rata basis for no  consideration,  or (z) in any transaction in which a
holder  which  is  a  partnership  or  limited  liability  company   distributes
Restricted  Securities solely to its partners or members, as applicable,  for no
consideration;  provided that each transferee agrees in writing to be subject to
the  terms  of this  Section  4.  Each  certificate  evidencing  the  Restricted
Securities  transferred as above provided shall bear the restrictive  legend set
forth in Section 3 above.

5. REGISTRATION.

(i) The  Company  shall  file a  registration  statement  on Form  S-3 or  other
appropriate  registration  document  under the  Securities Act for resale of the
Registrable  Securities  and shall use its best  efforts to  maintain  the shelf
registration  effective  for a period  of 24  months  (or so long as a Holder is
subject to the volume  limitations of Rule 144(e) under the Securities Act) (the
"Effectiveness  Period").  The Company shall file such Registration Statement no
later than thirty (30) days after the last  closing  date of the  Offering,  and
shall cause such  Registration  Statement to become effective within ninety (90)
days after the date of filing.

(ii)  Notwithstanding the foregoing,  the Company shall not be obligated to take
any action  pursuant to this Section 5 in any particular  jurisdiction  in which
the Company would be required to execute a general consent to service of process
in effecting such  registration,  qualification or compliance unless the Company
is already subject to service in such jurisdiction and except as may be required
by the Securities Act.

(iii) In the event that the  Company  fails to file the  registration  statement
pursuant to this  Section 5 within  forty-five  (45) days after the last closing
date or if such  registration  statement has not been declared  effective within
the earlier of (i) one hundred  twenty days from the last  closing  date or (ii)
ninety (90) days  following  the date of filing,  the Company  shall pay to each
Purchaser,  as liquidated  damages and not as a penalty,  an amount equal to two
percent (2%) of the aggregate  purchase price paid by such Purchaser pursuant to
the  Subscription  Agreement(s)  in respect of each  30-day  period (or  partial
period  thereof) of  noncompliance.  The Company shall make such payments on the
first day of each  month of  noncompliance  in  respect of the number of days of
noncompliance in the immediately preceding month.  Notwithstanding the foregoing
payments by the Company, each Purchaser may seek any other remedies available by
law. If the Company fails to pay any liquidated damages pursuant to this Section
in full within seven days after the date payable,  the Company will pay interest
thereon  at a rate of 18% per  annum  (or such  lesser  maximum  amount  that is
permitted to be paid by applicable  law) to the Holder,  accruing daily from the
date such liquidated damages are due until such amounts,  plus all such interest
thereon,  are paid in full. The liquidated  damages pursuant to the terms hereof
shall apply on a pro-rata  basis for any portion of a month prior to the cure of
any default.

6. EXPENSES OF REGISTRATION.  The Company shall bear all  Registration  Expenses
incurred  in  connection  with any  registration,  qualification  or  compliance
pursuant to this Agreement and all underwriting  discounts,  selling commissions
and expense  allowances  applicable to the sale of any securities by the Company
for its own account in any registration.  All Selling Expenses shall be borne by
the Holders whose  securities are included in such  registration pro rata on the
basis of the number of their Registrable Securities so registered.

7. INDEMNIFICATION.

(i) The Company will  indemnify  each Holder,  each of its officers,  directors,
agents,  employees and partners,  and each person controlling such Holder,  with
respect to each registration,  qualification or compliance  effected pursuant to
this Agreement,  and each underwriter,  if any, and each person who controls any
underwriter,  and their respective counsel against all claims,  losses,  damages
and  liabilities  (or actions,  proceedings or  settlements in respect  thereof)
arising out of or based on any untrue statement (or alleged untrue statement) of
a material fact contained in any prospectus, offering circular or other document
prepared  by  the  Company  (including  any  related   registration   statement,
notification or the like) incident to any such  registration,  qualification  or
compliance,  or based on any omission (or alleged  omission) to state  therein a
material fact required to be stated  therein or necessary to make the statements
therein not misleading, or any violation by the Company of the Securities Act or
any rule or  regulation  thereunder  applicable  to the Company and  relating to
action  or  inaction  required  of the  Company  in  connection  with  any  such
registration,  qualification or compliance, and will reimburse each such Holder,
each of its officers, directors, agents, employees and partners, and each person
controlling such Holder,  each such underwriter and each person who controls any

<PAGE>

such  underwriter,  for any legal and any other  expenses as they are reasonably
incurred in connection with  investigating  and defending any such claim,  loss,
damage, liability or action, provided that the Company will not be liable in any
such case to the extent that any such claim, loss, damage,  liability or expense
arises  primarily  and directly out of or is based on any untrue  statement  (or
alleged untrue statement) or omission (or alleged  omissions) based upon written
information furnished to the Company by such Holder or underwriter and stated to
be specifically for use therein.

(ii) Each Holder whose Registrable  Securities are included in any registration,
qualification or compliance  effected  pursuant to this Agreement will indemnify
the Company, each of its directors and officers and each underwriter, if any, of
the Company's securities covered by such a registration  statement,  each person
who  controls  the  Company  or  such  underwriter  within  the  meaning  of the
Securities Act and the rules and regulations thereunder,  each other such Holder
and each of their officers,  directors and partners, and each person controlling
such Holder,  and their respective counsel against all claims,  losses,  damages
and liabilities (or actions in respect thereof)  arising  primarily and directly
out of or based on any untrue  statement  (or  alleged  untrue  statement)  of a
material fact contained in any such registration statement, prospectus, offering
circular or other  document,  or any  omission  (or alleged  omission)  to state
therein a material fact  required to be stated  therein or necessary to make the
statements  therein  not  misleading,  and will  reimburse  the Company and such
Holders, directors, officers, partners, persons, underwriters or control persons
for  any  legal  or any  other  expenses  as they  are  reasonably  incurred  in
connection  with  investigating  or  defending  any such  claim,  loss,  damage,
liability or action,  in each case to the extent,  but only to the extent,  that
such untrue  statement  (or alleged  untrue  statement)  or omission (or alleged
omission) is made in such registration statement,  prospectus, offering circular
or other  document in reliance upon and in conformity  with written  information
furnished  to the Company by such Holder and stated to be  specifically  for use
therein; PROVIDED, HOWEVER, that the obligations of such Holders hereunder shall
be limited to an amount equal to the net proceeds to each such Holder sold under
such registration statement,  prospectus, offering circular or other document as
contemplated herein.

(iii)  Each  party  entitled  to  indemnification  under  this  Section  7  (the
"Indemnified  Party")  shall  give  notice  to the  party  required  to  provide
indemnification (the "Indemnifying Party") promptly after such Indemnified Party
has actual knowledge of any claim as to which indemnity may be sought, and shall
permit the  Indemnifying  Party to assume  the  defense of any such claim or any
litigation  resulting  therefrom,  provided  that  counsel for the  Indemnifying
Party,  who shall conduct the defense of such claim or any litigation  resulting
therefrom,  shall be approved by the Indemnified Party (whose approval shall not
unreasonably  be withheld),  and the  Indemnified  Party may participate in such
defense at such party's  expense;  and provided  further that if any Indemnified
Party  reasonably  concludes  that  there  may  be one or  more  legal  defenses
available to it that are not available to the  Indemnifying  Party, or that such
claim or litigation involves or could have an effect on matters beyond the scope
of this Agreement,  then the Indemnified Party may retain its own counsel at the
expense of the Indemnifying  Party; and provided further that the failure of any
Indemnified  Party to give  notice as  provided  herein  shall not  relieve  the
Indemnifying  Party of its obligations  under this Agreement  unless and only to
the extent that such failure to give notice results in material prejudice to the
Indemnifying  Party. No Indemnifying  Party, in the defense of any such claim or
litigation, shall, except with the consent of each Indemnified Party, consent to
entry of any judgment or enter into any settlement  which does not include as an
unconditional  term  thereof  the giving by the  claimant or  plaintiff  to such
Indemnified  Party of a release  from all  liability in respect to such claim or
litigation.  Each  Indemnified  Party shall furnish such  information  regarding
itself or the claim in question as an Indemnifying  Party may reasonably request
in writing and as shall be  reasonably  required in  connection  with defense of
such claim and litigation resulting therefrom.

(iv) If the indemnification provided for in this Section 7 is held by a court of
competent jurisdiction to be unavailable to an Indemnified Party with respect to
any loss,  liability,  claim,  damage or expense  referred  to herein,  then the
Indemnifying  Party, in lieu of indemnifying  such Indemnified  Party hereunder,
shall  contribute to the amount paid or payable by such  Indemnified  Party as a
result of such loss,  liability,  claim, damage or expense in such proportion as
is appropriate to reflect the relative  fault of the  Indemnifying  Party on the
one  hand and of the  Indemnified  Party on the  other  in  connection  with the
statements or omissions which resulted in such loss, liability, claim, damage or
expense as well as any other  relevant  equitable  considerations.  The relative
fault of the Indemnifying Party and of the Indemnified Party shall be determined
by  reference  to,  among other  things,  whether  the untrue or alleged  untrue
statement of a material fact or the omission to state a material fact relates to
information  supplied by the Indemnifying  Party or by the Indemnified Party and

<PAGE>

the parties' relative intent,  knowledge,  access to information and opportunity
to correct or prevent such statement or omission.

8. TRANSFER OR ASSIGNMENT OF RIGHTS. The benefits to the Holder hereunder may be
transferred  or assigned by a Holder to a  transferee  or assignee of any of the
Restricted  Securities,  provided that the Company is given written notice prior
to the time that such right is  exercised,  stating the name and address of said
transferee or assignee and identifying the securities with respect to which such
registration rights are being transferred or assigned; provided further that the
transferee or assignee of such rights assumes in writing the  obligations of the
Holder under this Agreement.

9.  REGISTRATION  PROCEDURES.  In the case of the  registration  effected by the
Company  pursuant to this  Agreement,  the Company  will keep each Holder who is
entitled  to  registration  benefits  hereunder  advised  in  writing  as to the
initiation  of  each  registration  and as to  the  completion  thereof.  At its
expense, the Company will:

                  (i) Prepare and file with the Commission  such  amendments and
supplements to such registration statement and the prospectus used in connection
with  such  registration  statement  as may be  necessary  to  comply  with  the
provisions of the Securities  Act with respect to the  disposition of securities
covered by such registration statement;

                  (ii) Respond as promptly as  reasonably  possible,  and in any
event within ten days, to any comments received from the Commission with respect
to a registration statement or any amendment thereto.

                  (iv)  Notify the  Holders  and their  counsel as  promptly  as
reasonably possible and (if requested by any such person) confirm such notice in
writing no later than one trading day following the day (i)(A) when a Prospectus
or any  Prospectus  supplement  or  post-effective  amendment to a  registration
statement  is  proposed  to be filed  and (B)  with  respect  to a  registration
statement or any post-effective amendment, when the same has become effective;

                  (v) Furnish such number of  prospectuses  and other  documents
incident  thereto,  including  supplements  and  amendments,  as  a  Holder  may
reasonably request; and

                  (vi) Furnish to each selling Holder,  upon request,  a copy of
all documents  filed with and all  correspondence  from or to the  Commission in
connection with any such registration  statement other than nonsubstantive cover
letters and the like.

                  (vii) Use its best  efforts to avoid the  issuance  of, or, if
issued, obtain the withdrawal of (i) any order suspending the effectiveness of a
registration  statement,  or  (ii)  any  suspension  of  the  qualification  (or
exemption from  qualification) of any of the Registrable  Securities for sale in
any jurisdiction, at the earliest practicable moment.

                  (viii) Comply with all applicable rules and regulations of the
Commission.

                  (ix) The Company may require each selling Holder to furnish to
the Company a  certified  statement  as to the number of shares of Common  Stock
beneficially  owned by such Holder  and, if  requested  by the  Commission,  the
controlling person thereof.

10. RULE 144 REPORTING.  With a view to making available the benefits of certain
rules  and  regulations  of the  Commission  which  may  permit  the sale of the
Restricted Securities to the public without registration, the Company agrees to:

                  (i) Make and keep public information available, as those terms
are understood and defined in Rule 144 under the Securities Act; and

                  (ii)  Use  its  reasonable  best  efforts  to  file  with  the
Commission  in a timely manner all reports and other  documents  required of the
Company under the Securities Act and the Exchange Act.

<PAGE>

11.  REPORTING  UNDER THE  EXCHANGE  ACT.  The Company  agrees to take no action
designed  to, or with the effect of,  causing the Company to cease to be subject
to the reporting  requirements of the Exchange Act for so long as a registration
statement  under  this  Agreement  is  required  to be  filed  or  caused  to be
effective, or shall be required to be or remain effective.

12. MISCELLANEOUS.

(i) Except as and to the extent specified in Schedule 12(i) hereto,  neither the
Company nor any of its security holders (other than the Holders in such capacity
pursuant  hereto) may  include  securities  of the  Company in the  registration
statement required to be filed hereunder other than the Registrable  Securities,
and the  Company  shall not  after  the date  hereof  enter  into any  agreement
providing any such right to any of its existing  security  holders.  The Company
shall not file any other registration  statement until the initial  registration
statement required hereunder is declared effective by the Commission.

(ii)  COMPLIANCE.  Each Holder covenants and agrees that it will comply with the
prospectus  delivery  requirements  of the Securities Act as applicable to it in
connection  with sales of Registrable  Securities  pursuant to the  registration
statement required hereunder.

(iii) PIGGY-BACK  REGISTRATIONS.  If at any time during the Effectiveness Period
there is not an effective registration statement covering all of the Registrable
Securities  and the  Company  shall  determine  to  prepare  and  file  with the
Commission a registration  statement relating to an offering for its own account
or the  account  of  others  under  the  Securities  Act  of  any of its  equity
securities,  other than on Form S-4 or Form S-8 (each as  promulgated  under the
Securities Act) or their then  equivalents  relating to equity  securities to be
issued solely in connection  with any  acquisition  of any entity or business or
equity  securities  issuable in connection  with stock option or other  employee
benefit plans, then the Company shall send to each Holder written notice of such
determination and, if within fifteen days after receipt of such notice, any such
Holder  shall  so  request  in  writing,  the  Company  shall  include  in  such
registration  statement  all or any  part of such  Registrable  Securities  such
holder  requests to be  registered;  provided,  that,  the Company  shall not be
required to register any  Registrable  Securities  pursuant to this Section that
are eligible for resale pursuant to Rule 144(k) promulgated under the Securities
Act.

(iv) NOTICES. Any and all notices or other communications or deliveries required
or  permitted  to be provided  hereunder  shall be delivered as set forth in the
Subscription Agreement(s).

(v) SUCCESSORS AND ASSIGNS.  This Agreement shall inure to the benefit of and be
binding upon the  successors  and  permitted  assigns of each of the parties and
shall inure to the benefit of each Holder. The Company may not assign its rights
or obligations hereunder without the prior written consent of all of the Holders
of the  then-outstanding  Registrable  Securities.  Each Holder may assign their
respective  rights hereunder in the manner and to the persons as permitted under
the Subscription Agreement(s).

(vi) COUNTERPARTS. This Agreement may be executed in any number of counterparts,
each of which when so  executed  shall be deemed to be an original  and,  all of
which taken together shall  constitute one and the same Agreement.  In the event
that any signature is delivered by facsimile transmission,  such signature shall
create a valid  binding  obligation  of the party  executing (or on whose behalf
such  signature is executed)  the same with the same force and effect as if such
facsimile signature were the original thereof.

(vii)  GOVERNING  LAW. All  questions  concerning  the  construction,  validity,
enforcement  and  interpretation  of this  Agreement  shall be  governed  by and
construed and enforced in accordance  with the internal laws of the State of New
York, without regard to the principles of conflicts of law thereof.

(viii)  SEVERABILITY.  If any term,  provision,  covenant or restriction of this
Agreement is held by a court of competent  jurisdiction to be invalid,  illegal,
void or  unenforceable,  the remainder of the terms,  provisions,  covenants and
restrictions set forth herein shall remain in full force and effect and shall in
no way be affected,  impaired or  invalidated,  and the parties hereto shall use
their reasonable  efforts to find and employ an alternative means to achieve the
same or  substantially  the  same  result  as that  contemplated  by such  term,
provision,  covenant or restriction.  It is hereby stipulated and declared to be

<PAGE>

the intention of the parties that they would have executed the remaining  terms,
provisions, covenants and restrictions without including any of such that may be
hereafter declared invalid, illegal, void or unenforceable.

(ix) HEADINGS.  The headings in this Agreement are for  convenience of reference
only and shall not limit or otherwise affect the meaning hereof.

(x) INDEPENDENT NATURE OF PURCHASERS' OBLIGATIONS AND RIGHTS. The obligations of
each  Purchaser  hereunder is several and not joint with the  obligations of any
other Purchaser hereunder,  and no Purchaser shall be responsible in any way for
the  performance of the obligations of any other  Purchaser  hereunder.  Nothing
contained herein or in any other agreement or document delivered at any closing,
and no action taken by any Purchaser pursuant hereto or thereto, shall be deemed
to constitute the Purchasers as a partnership,  an association,  a joint venture
or any other kind of entity,  or create a presumption that the Purchasers are in
any way acting in concert with respect to such  obligations or the  transactions
contemplated by this Agreement.  Each Purchaser shall be entitled to protect and
enforce its rights,  including without limitation the rights arising out of this
Agreement, and it shall not be necessary for any other Purchaser to be joined as
an additional party in any proceeding for such purpose.

                              ********************

<PAGE>

               IN WITNESS WHEREOF,  the parties have executed this  Registration
Rights Agreement as of the date first written above.

HEALTH SCIENCES GROUP, INC.

By: ____________________________________
       Name:
       Title:

[SIGNATURE PAGE OF HOLDERS FOLLOWS]

<PAGE>

[SIGNATURE PAGE OF HOLDERS TO RRA]

                                    [HOLDER]

                                    By: _____________________________________
                                           Name:
                                           Title:

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