Exhibit 4.3


 


	
        NUMBER       

        ________-
	 	
        (SEE REVERSE SIDE FOR LEGEND)

        THIS WARRANT WILL BE VOID IF NOT EXERCISED
        PRIOR TO 

THE EXPIRATION DATE (DEFINED BELOW)
	 	WARRANTS


 


 


 


CUSIP 70423R
110


WARRANT


THIS CERTIFIES THAT, for value received


 


is the registered holder of a warrant or
warrants (the “Warrant”), expiring at 5:00 p.m., New York City time, on ________, 2021 to purchase one fully paid and
non-assessable share of common stock, par value $.001 per share (“Shares”), of PAXmed Inc., a Delaware corporation
(the “Company”) for each Warrant evidenced by this Warrant Certificate. The Warrant entitles the holder thereof to
purchase from the Company, commencing six months from the consummation of the Company’s initial public offering, such number
of Shares of the Company at the Warrant Price, upon surrender of this Warrant Certificate and payment of the Warrant Price at the
office or agency of the Warrant Agent, Continental Stock Transfer & Trust Company, but only subject to the conditions set forth
herein and in the Warrant Agreement between the Company and Continental Stock Transfer & Trust Company. In no event will the
Company be required to net cash settle any warrant exercise. The Warrant Agreement provides that upon the occurrence of certain
events the Warrant Price and the number of Shares purchasable hereunder, set forth on the face hereof, may, subject to certain
conditions, be adjusted. The term Warrant Price as used in this Warrant Certificate refers to the price per Share at which Shares
may be purchased at the time the Warrant is exercised. The initial Warrant Price per share of Common Stock for any Warrant is equal
to $5.00 per share.


Upon any exercise
of the Warrant for less than the total number of full Shares provided for herein, there shall be issued to the registered holder
hereof or the registered holder’s assignee a new Warrant Certificate covering the number of Shares for which the Warrant
has not been exercised.


Warrant Certificates,
when surrendered at the office or agency of the Warrant Agent by the registered holder hereof in person or by attorney duly authorized
in writing, may be exchanged in the manner and subject to the limitations provided in the Warrant Agreement, but without payment
of any service charge, for another Warrant Certificate or Warrant Certificates of like tenor and evidencing in the aggregate a
like number of Warrants.


Upon due presentment
for registration of transfer of the Warrant Certificate at the office or agency of the Warrant Agent, a new Warrant Certificate
or Warrant Certificates of like tenor and evidencing in the aggregate a like number of Warrants shall be issued to the transferee
in exchange for this Warrant Certificate, subject to the limitations provided in the Warrant Agreement, without charge except for
any applicable tax or other governmental charge.


The Company and the
Warrant Agent may deem and treat the registered holder as the absolute owner of this Warrant Certificate (notwithstanding any notation
of ownership or other writing hereon made by anyone), for the purpose of any exercise hereof, of any distribution to the registered
holder, and for all other purposes, and neither the Company nor the Warrant Agent shall be affected by any notice to the contrary.


This Warrant does
not entitle the registered holder to any of the rights of a stockholder of the Company.


The Company reserves
the right to call the Warrant at any time prior to its exercise commencing __ years from the closing of the Company’s initial
public offering, with a notice of call in writing to the holders of record of the Warrant, giving at least 30 days’ notice
of such call, at any time while the Warrant is exercisable, if the volume weighted average price of the Shares has been at least
$10.00 per share on each of 20 consecutive trading days ending on the third business day prior to the date on which notice of such
call is given provided that the average daily trading volume in the stock is at least 20,000 shares per day and if, and only if,
there is a current registration statement in effect with respect to the Shares underlying the Warrants. The call price of the Warrants
is to be $.01 per Warrant. Any Warrant either not exercised or tendered back to the Company by the end of the date specified in
the notice of call shall be canceled on the books of the Company and have no further value except for the $.01 call price.


 


	By	 	 	 	 
	 	 	 	 	 
	 	Chairman	 	 	Secretary 


 




     


     


    

 


SUBSCRIPTION FORM


To Be Executed by the Registered Holder
in Order to Exercise Warrants


 


The undersigned Registered Holder irrevocably
elects to exercise ______________ Warrants represented by this Warrant Certificate, and to purchase the Common Stock issuable
upon the exercise of such Warrants, and requests that Certificates for such shares shall be issued in the name of


 


	(PLEASE TYPE OR PRINT NAME AND ADDRESS)
	 
	 
	 
	 
	 



(SOCIAL SECURITY OR
TAX IDENTIFICATION NUMBER)


 


	and be delivered to 	 



(PLEASE PRINT OR TYPE NAME AND ADDRESS)


 


 



and, if such number of Warrants shall not
be all the Warrants evidenced by this Warrant Certificate, that a new Warrant Certificate for the balance of such Warrants be registered
in the name of, and delivered to, the Registered Holder at the address stated below:


 


	Dated: 	 	 	 
	 	 	(SIGNATURE)
	 	 	 
	 	 	(ADDRESS)
	 	 	 
	 	 	 
	 	 	(TAX IDENTIFICATION NUMBER)


 


ASSIGNMENT


To Be Executed by the Registered Holder
in Order to Assign Warrants


 


For Value Received, _______________________ hereby sell, assign,
and transfer unto


 


	(PLEASE TYPE OR PRINT NAME AND ADDRESS)
	 
	 
	 
	 
	 


(SOCIAL SECURITY OR
TAX IDENTIFICATION NUMBER)


 


	and be delivered to 	 



(PLEASE PRINT OR TYPE NAME AND ADDRESS)


 


______________________ of the Warrants represented by this Warrant
Certificate, and hereby irrevocably constitute and appoint _________________________________ Attorney to transfer this Warrant
Certificate on the books of the Company, with full power of substitution in the premises.


 


	Dated: 	 	 	 
	 	 	(SIGNATURE)


 


The
signature to the assignment of the Subscription Form must correspond to the name written upon the face of this Warrant Certificate
in every particular, without alteration or enlargement or any change whatsoever, and must be guaranteed by a commercial bank or
trust company or a member firm of the NYSE Amex, New York Stock Exchange, Pacific Stock Exchange or Chicago Stock Exchange.