EXHIBIT
4.1
 
 NEITHER
THIS SECURITY NOR THE SECURITIES INTO WHICH THIS SECURITY IS EXERCISABLE HAVE
BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES
COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER
THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND, ACCORDINGLY,
MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION
STATEMENT UNDER THE SECURITIES ACT OR PURSUANT TO AN AVAILABLE EXEMPTION FROM,
OR IN A TRANSACTION NOT SUBJECT TO, THE REGISTRATION REQUIREMENTS OF THE
SECURITIES ACT AND IN ACCORDANCE WITH APPLICABLE STATE SECURITIES LAWS AS
EVIDENCED BY A LEGAL OPINION OF COUNSEL TO THE TRANSFEROR TO SUCH EFFECT, THE
SUBSTANCE OF WHICH SHALL BE REASONABLY ACCEPTABLE TO THE COMPANY.
   January
30, 2010       W- 2010-___
  COMMON
STOCK PURCHASE WARRANT
  To
Purchase _________Shares of Common Stock of
  BIO-BRIDGE
SCIENCE, INC.
  THIS
COMMON STOCK PURCHASE WARRANT (the “Warrant”) certifies
that, for value received, _______________ (the “Holder”), is
entitled, upon the terms and subject to the limitations on exercise and the
conditions hereinafter set forth, at any time on or after the date hereof (the
“Initial Exercise
Date”) and on or prior to the close of business on the fifth (5th)
anniversary of the Initial Exercise Date (the “Termination Date”)
but not thereafter, to subscribe for and purchase from BIO-BRIDGE SCIENCE, Inc.,
a Delaware corporation (the “Company”), up
to________ shares (the “Warrant Shares”) of
Common Stock, par value $0.001 per share, of the Company (the “Common Stock”). 
The purchase price of one share of Common Stock under this Warrant shall be
equal to the Exercise Price, as defined in Section 2(b).
  Section 1.Definitions. 
Capitalized terms used and not otherwise defined herein shall have the meanings
set forth in that certain Securities Purchase Agreement (the “Purchase Agreement”),
dated January 30, 2007, among the Company and the purchasers signatory
thereto.
  Section 2.Exercise.
  a)         
Exercise of
Warrant.  Exercise of the purchase rights represented by this
Warrant may be made at any time or times on or after the Initial Exercise Date
and on or before the Termination Date by delivery to the Company of a duly
executed facsimile copy of the Notice of Exercise Form annexed hereto (or such
other office or agency of the Company as it may designate by notice in writing
to the registered Holder at the address of such Holder appearing on the books of
the Company); provided, however, within 5
Trading Days of the date said Notice of Exercise is delivered to the Company,
the Holder shall have surrendered this Warrant to the Company and the Company
shall have received payment of the aggregate Exercise Price of the shares
thereby purchased by wire transfer or cashier’s check drawn on a United States
bank.
  b)Exercise Price. 
The exercise price of the Common Stock under this Warrant shall be $1.00 (the
“Exercise
Price”).
  
  c)Mechanics of
Exercise.
  i.Authorization of Warrant
Shares.  The Company covenants that all Warrant Shares which may be
issued upon the exercise of the purchase rights represented by this Warrant
will, upon exercise of the purchase rights represented by this Warrant, be duly
authorized, validly issued, fully paid and nonassessable and free from all
taxes, liens and charges in respect of the issue thereof (other than taxes in
respect of any transfer occurring contemporaneously with such issue).  The
Company covenants that during the period the Warrant is outstanding, it will
reserve from its authorized and unissued Common Stock a sufficient number of
shares to provide for the issuance of the Warrant Shares upon the exercise of
any purchase rights under this Warrant.  The Company further covenants that
its issuance of this Warrant shall constitute full authority to its officers who
are charged with the duty of executing stock certificates to execute and issue
the necessary certificates for the Warrant Shares upon the exercise of the
purchase rights under this Warrant.  The Company will take all such
reasonable action as may be necessary to assure that such Warrant Shares may be
issued as provided herein without violation of any applicable law or regulation,
or of any requirements of the Trading Market upon which the Common Stock may be
listed.
  
  ii.Delivery of Certificates
Upon Exercise.  Certificates for shares purchased hereunder shall be
transmitted by the transfer agent of the Company to the Holder by crediting the
account of the Holder’s prime broker with the Depository Trust Company through
its Deposit Withdrawal Agent Commission (“DWAC”) system if the
Company is a participant in such system, and otherwise by physical delivery to
the address specified by the Holder in the Notice of Exercise within 10 Trading
Days from the delivery to the Company of the Notice of Exercise Form, surrender
of this Warrant and payment of the aggregate Exercise Price as set forth above
(“Warrant Share
Delivery Date”).  This Warrant shall be deemed to have been
exercised on the date the Exercise Price is received by the Company.  The
Warrant Shares shall be deemed to have been issued, and Holder or any other
person so designated to be named therein shall be deemed to have become a holder
of record of such shares for all purposes, as of the date the Warrant has been
exercised by payment to the Company of the Exercise Price and all taxes required
to be paid by the Holder, if any, prior to the issuance of such shares, have
been paid.
  iii.Delivery of New Warrants
Upon Exercise.  If this Warrant shall have been exercised in part,
the Company shall, at the time of delivery of the certificate or certificates
representing Warrant Shares, deliver to Holder a new Warrant evidencing the
rights of Holder to purchase the unpurchased Warrant Shares called for by this
Warrant, which new Warrant shall in all other respects be identical with this
Warrant.
  iv.   
No Fractional Shares
or Scrip.  No fractional shares or scrip representing fractional
shares shall be issued upon the exercise of this Warrant.
  v.Charges, Taxes and
Expenses.  Issuance of certificates for Warrant Shares shall be made
without charge to the Holder for any issue or other incidental expense in
respect of the issuance of such certificate, all of which taxes and expenses
shall be paid by the Company, and such certificates shall be issued in the name
of the Holder or in such name or names as may be directed by the Holder; provided, however, that in the
event certificates for Warrant Shares are to be issued in a name other than the
name of the Holder, this Warrant when surrendered for exercise shall be
accompanied by the Assignment Form attached hereto duly executed by the Holder;
and the Company may require, as a condition thereto, the payment of a sum
sufficient to reimburse it for any transfer tax incidental thereto.
  vi.Closing of
Books.  The Company will not close its stockholder books or records
in any manner which prevents the timely exercise of this Warrant, pursuant to
the terms hereof.
  Section 3.Certain
Adjustment.
  a)Stock Dividends
and Splits. If the Company, at any time while this Warrant is
outstanding: (A) pays a stock dividend or otherwise make a distribution or
distributions on shares of its Common Stock or any other equity or equity
equivalent securities payable in shares of Common Stock (which, for avoidance of
doubt, shall not include any shares of Common Stock issued by the Company
pursuant to this Warrant), (B) subdivides outstanding shares of Common Stock
into a larger number of shares, (C) combines (including by way of reverse stock
split) outstanding shares of Common Stock into a smaller number of shares, or
(D) issues by reclassification of shares of the Common Stock any shares of
capital stock of the Company, then in each case the Exercise Price shall be
multiplied by a fraction of which the numerator shall be the number of shares of
Common Stock (excluding treasury shares, if any) outstanding before such event
and of which the denominator shall be the number of shares of Common Stock
outstanding after such event and the number of shares issuable upon exercise of
this Warrant shall be proportionately adjusted.  Any adjustment made
pursuant to this Section 3(a) shall become effective immediately after the
record date for the determination of stockholders entitled to receive such
dividend or distribution and shall become effective immediately after the
effective date in the case of a subdivision, combination or
re-classification.
  b)Calculations.
Calculations under this Section 3 shall be made to the nearest cent or the
nearest 1/100th of a share, as the case may be. The number of shares of Common
Stock outstanding at any given time shall not includes shares of Common Stock
owned or held by or for the account of the Company, and the description of any
such shares of Common Stock shall be considered on issue or sale of Common
Stock.  For purposes of this Section 3, the number of shares of Common
Stock deemed to be issued and outstanding as of a given date shall be the sum of
the number of shares of Common Stock (excluding treasury shares, if any) issued
and outstanding.
  c)  Adjustment to Exercise
Price. Whenever the Exercise Price is adjusted pursuant to this Section
3, the Company shall promptly mail to each Holder a notice setting forth the
Exercise Price after such adjustment and setting forth a brief statement of the
facts requiring such adjustment.
  
  d)Reorganizations,
etc. 
In case, at any time during the Exercise Period, of any capital reorganization,
of any reclassification of the stock of the Company (other than a change in par
value or from par value to no par value or from no par value to par value or as
a result of a stock dividend or subdivision, split-up or combination of shares),
or the consolidation or merger of the Company with or into another corporation
(other than a consolidation or merger in which the Company is the continuing
operation and which does not result in any change or reclassification in the
Warrant Shares) or of the sale of all or substantially all the properties and
assets of the Company as an entirety to any other corporation, the Company, at
its sole discretion, shall have the right and option to (A) provide 10 days
prior written notice of such event to the Holder and this Warrant shall
terminate and be of no further force and effect on and after the effective date
of such capital reorganization or reclassification or the consummation of such
consolidation, sale or merger; or (B) provide that this Warrant shall, after
such reorganization, reclassification, consolidation, merger or sale, be
exercisable for the kind and number of shares of stock or other securities or
property of the Company or of the corporation resulting from such consolidation
or surviving such merger or to which such properties and assets shall have been
sold to which such holder would have been entitled if he, she or it had held the
Warrant Shares issuable upon the exercise hereof immediately prior to such
reorganization, reclassification, consolidation, merger or sale.
  e)Exempt
Issuance. Notwithstanding the foregoing, no adjustments, nor notices
shall be made, paid or issued under this Section 3 in respect of an Exempt
Issuance.
  Section 4.Transfer of
Warrant.
  a)Transferability. 
Subject to compliance with any applicable securities laws and the conditions set
forth in Sections 5(a) and 4(d) hereof and to the provisions of Section 4.1 of
the Purchase Agreement, this Warrant and all rights hereunder are transferable,
in whole or in part, upon surrender of this Warrant at the principal office of
the Company, together with a written assignment of this Warrant substantially in
the form attached hereto duly executed by the Holder or its agent or attorney
and funds sufficient to pay any transfer taxes payable upon the making of such
transfer.  Upon such surrender and, if required, such payment, the Company
shall execute and deliver a new Warrant or Warrants in the name of the assignee
or assignees and in the denomination or denominations specified in such
instrument of assignment, and shall issue to the assignor a new Warrant
evidencing the portion of this Warrant not so assigned, and this Warrant shall
promptly be cancelled.  A Warrant, if properly assigned, may be exercised
by a new holder for the purchase of Warrant Shares without having a new Warrant
issued.
  b)New
Warrants. This Warrant may be divided or combined with other Warrants
upon presentation hereof at the aforesaid office of the Company, together with a
written notice specifying the names and denominations in which new Warrants are
to be issued, signed by the Holder or its agent or attorney.  Subject to
compliance with Section 4(a), as to any transfer which may be involved in such
division or combination, the Company shall execute and deliver a new Warrant or
Warrants in exchange for the Warrant or Warrants to be divided or combined in
accordance with such notice.
  c)Warrant
Register. The Company shall register this Warrant, upon records to be
maintained by the Company for that purpose (the “Warrant Register”),
in the name of the record Holder hereof from time to time.  The Company may
deem and treat the registered Holder of this Warrant as the absolute owner
hereof for the purpose of any exercise hereof or any distribution to the Holder,
and for all other purposes, absent actual notice to the contrary.
  d)Transfer
Restrictions. If, at the time of the surrender of this Warrant in
connection with any transfer of this Warrant, the transfer of this Warrant shall
not be registered pursuant to an effective registration statement under the
Securities Act and under applicable state securities or blue sky laws, the
Company may require, as a condition of allowing such transfer (i) that the
Holder or transferee of this Warrant, as the case may be, furnish to the Company
a written opinion of counsel (which opinion shall be in form, substance and
scope customary for opinions of counsel in comparable transactions) to the
effect that such transfer may be made without registration under the Securities
Act and under applicable state securities or blue sky laws, (ii) that the holder
or transferee execute and deliver to the Company an investment letter in form
and substance acceptable to the Company and (iii) that the transferee be an
“accredited investor” as defined in Rule 501(a)(1), (a)(2), (a)(3), (a)(7), or
(a)(8) promulgated under the Securities Act or a qualified institutional buyer
as defined in Rule 144A(a) under the Securities Act.
  Section 5.Miscellaneous.
  a)Title to
Warrant.  Prior to the Termination Date and subject to compliance
with applicable laws and Section 4 of this Warrant, this Warrant and all rights
hereunder are transferable, in whole or in part, at the office or agency of the
Company by the Holder in person or by duly authorized attorney, upon surrender
of this Warrant together with the Assignment Form annexed hereto properly
endorsed.  The transferee shall sign an investment letter in form and
substance reasonably satisfactory to the Company.
  
  b)No Rights as
Shareholder Until Exercise.  This Warrant does not entitle the
Holder to any voting rights or other rights as a shareholder of the Company
prior to the exercise hereof.  Upon the surrender of this Warrant and the
payment of the aggregate Exercise Price, the Warrant Shares so purchased shall
be and be deemed to be issued to such Holder as the record owner of such shares
as of the close of business on the later of the date of such surrender or
payment.
  c)Loss, Theft,
Destruction or Mutilation of Warrant. The Company covenants that upon
receipt by the Company of evidence reasonably satisfactory to it of the loss,
theft, destruction or mutilation of this Warrant or any stock certificate
relating to the Warrant Shares, and in case of loss, theft or destruction, of
indemnity or security reasonably satisfactory to it (which, in the case of the
Warrant, shall not include the posting of any bond), and upon surrender and
cancellation of such Warrant or stock certificate, if mutilated, the Company
will make and deliver a new Warrant or stock certificate of like tenor and dated
as of such cancellation, in lieu of such Warrant or stock
certificate.
  d)Saturdays,
Sundays, Holidays, etc.  If the last or appointed day for the taking
of any action or the expiration of any right required or granted herein shall be
a Saturday, Sunday or a legal holiday, then such action may be taken or such
right may be exercised on the next succeeding day not a Saturday, Sunday or
legal holiday.
  e)Authorized
Shares. The Company covenants that during the period the Warrant is
outstanding, it will reserve from its authorized and unissued Common Stock a
sufficient number of shares to provide for the issuance of the Warrant Shares
upon the exercise of any purchase rights under this Warrant.  The Company
further covenants that its issuance of this Warrant shall constitute full
authority to its officers who are charged with the duty of executing stock
certificates to execute and issue the necessary certificates for the Warrant
Shares upon the exercise of the purchase rights under this Warrant.  The
Company will take all such reasonable action as may be necessary to assure that
such Warrant Shares may be issued as provided herein without violation of any
applicable law or regulation, or of any requirements of the Trading Market upon
which the Common Stock may be listed.
  Except
and to the extent as waived or consented to by the Holder, the Company shall not
by any action, including, without limitation, amending its certificate of
incorporation or through any reorganization, transfer of assets, consolidation,
merger, dissolution, issue or sale of securities or any other voluntary action,
avoid or seek to avoid the observance or performance of any of the terms of this
Warrant, but will at all times in good faith assist in the carrying out of all
such terms and in the taking of all such actions as may be necessary or
appropriate to protect the rights of Holder as set forth in this Warrant against
impairment.  Without limiting the generality of the foregoing, the Company
will (a) not increase the par value of any Warrant Shares above the amount
payable therefor upon such exercise immediately prior to such increase in par
value, (b) take all such action as may be necessary or appropriate in order that
the Company may validly and legally issue fully paid and nonassessable Warrant
Shares upon the exercise of this Warrant, and (c) use commercially reasonable
efforts to obtain all such authorizations, exemptions or consents from any
public regulatory body having jurisdiction thereof as may be necessary to enable
the Company to perform its obligations under this Warrant.
  Before
taking any action which would result in an adjustment in the number of Warrant
Shares for which this Warrant is exercisable or in the Exercise Price, the
Company shall obtain all such authorizations or exemptions thereof, or consents
thereto, as may be necessary from any public regulatory body or bodies having
jurisdiction thereof.
  f)Jurisdiction. All
questions concerning the construction, validity, enforcement and interpretation
of this Warrant shall be determined in accordance with the provisions of the
Purchase Agreement.
  g)Restrictions. 
The Holder acknowledges that the Warrant Shares acquired upon the exercise of
this Warrant, if not registered, will have restrictions upon resale imposed by
state and federal securities laws.
  h)Nonwaiver.No course of dealing or any delay or failure to exercise any right
hereunder on the part of Holder shall operate as a waiver of such right or
otherwise prejudice Holder’s rights, powers or remedies, notwithstanding the
fact that all rights hereunder terminate on the Termination
Date.
  i)Notices.  Any
notice, request or other document required or permitted to be given or delivered
to the Holder by the Company shall be delivered in accordance with the notice
provisions of the Purchase Agreement.
  j)Limitation of
Liability.  No provision hereof, in the absence of any affirmative
action by Holder to exercise this Warrant or purchase Warrant Shares, and no
enumeration herein of the rights or privileges of Holder, shall give rise to any
liability of Holder for the purchase price of any Common Stock or as a
stockholder of the Company, whether such liability is asserted by the Company or
by creditors of the Company.
  k)Remedies.
 Holder, in addition to being entitled to exercise all rights granted by
law, including recovery of damages, will be entitled to specific performance of
its rights under this Warrant.  The Company agrees that monetary damages
would not be adequate compensation for any loss incurred by reason of a breach
by it of the provisions of this Warrant and hereby agrees to waive the defense
in any action for specific performance that a remedy at law would be
adequate.
  
  l)Successors and
Assigns.  Subject to applicable securities laws, this Warrant and
the rights and obligations evidenced hereby shall inure to the benefit of and be
binding upon the successors of the Company and the successors and permitted
assigns of Holder.  The provisions of this Warrant are intended to be for
the benefit of all Holders from time to time of this Warrant and shall be
enforceable by any such Holder or holder of Warrant Shares.
  m)Amendment.  This
Warrant may be modified or amended or the provisions hereof waived with the
written consent of the Company and the Holder.
  n)Severability. 
Wherever possible, each provision of this Warrant shall be interpreted in such
manner as to be effective and valid under applicable law, but if any provision
of this Warrant shall be prohibited by or invalid under applicable law, such
provision shall be ineffective to the extent of such prohibition or invalidity,
without invalidating the remainder of such provisions or the remaining
provisions of this Warrant.
  o)Headings.  The
headings used in this Warrant are for the convenience of reference only and
shall not, for any purpose, be deemed a part of this Warrant.
  IN
WITNESS WHEREOF, the Company has caused this Warrant to be executed by its
officer thereunto duly authorized.
   Dated: 
January 30, 2010
  BIO-BRIDGE
      SCIENCE, INC.By:Name:
      Liang Qiao, MDTitle:
      Chief Executive Officer
    NOTICE
OF EXERCISE
  TO:BIO-BRIDGE SCIENCE, INC.
  (1)The undersigned
hereby elects to purchase _____________ Warrant Shares of the Company pursuant
to the terms of the attached Warrant (only if exercised in full), and tenders
herewith payment of the exercise price in full, together with all applicable
transfer taxes, if any.
  (2)Payment shall take
in the form in lawful money of the United States. The amount is
___________.
  (3)Please issue a
certificate or certificates representing said Warrant Shares in the name of the
undersigned or in such other name as is specified below:
  The
Warrant Shares shall be delivered to the following:
  ______________________________________________________________________________________ .
  (4) 
Accredited
Investor.  The undersigned is an “accredited investor” as defined in
Regulation D promulgated under the Securities Act of 1933, as
amended.
  [SIGNATURE
OF HOLDER]
  Name
      of Investing Entity:Signature
      of Authorized Signatory of Investing Entity:Name
      of Authorized Signatory:Title
      of Authorized Signatory:Date:
 
 
 
 ASSIGNMENT
FORM
  (To
assign the foregoing warrant, execute this form and supply required
information.  Do not
use this form to exercise the warrant.)
  FOR VALUE
RECEIVED, the foregoing Warrant and all rights evidenced thereby are hereby
assigned to___________ whose address
is________________________________________________.
  0;     .
  Dated:
              
              ,Holder’s
      Signature:Holder’s
      Address:Signature
      Guaranteed:
    NOTE: 
The signature to this Assignment Form must correspond with the name as it
appears on the face of the Warrant, without alteration or enlargement or any
change whatsoever, and must be guaranteed by a bank or trust company. 
Officers of corporations and those acting in a fiduciary or other representative
capacity should file proper evidence of authority to assign the foregoing
Warrant.