Exhibit 4.3


 


COMMON STOCK PURCHASE WARRANT


 


MICROLIN BIO, INC.


 


	Warrant Shares: _______	Initial Exercise Date: July  , 2014


 


THIS COMMON STOCK PURCHASE
WARRANT (the “Warrant”) certifies that, for value received, _____________ or its assigns (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 five
(5) year anniversary of the Initial Exercise Date (the “Termination Date”) but not thereafter, to subscribe
for and purchase from Microlin Bio, Inc., a Delaware corporation (the “Company”), up to ______ [100% of Units
purchased by such holder in the offering] shares (as subject to adjustment hereunder, the “Warrant Shares”)
of Common Stock of the Company. 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.  


 


a)          “VWAP” means, for
any date, the price determined by the first of the following clauses that applies: (a) if the Common Stock is then listed or quoted
on a Trading Market, the daily volume weighted average price of the Common Stock for such date (or the nearest preceding date)
on the Trading Market on which the Common Stock is then listed or quoted as reported by Bloomberg L.P. (based on a Trading Day
from 9:30 a.m. (New York City time) to 4:02 p.m. (New York City time)), (b)  if the OTC Bulletin Board is not a Trading Market,
the volume weighted average price of the Common Stock for such date (or the nearest preceding date) on the OTC Bulletin Board,
(c) if the Common Stock is not then listed or quoted for trading on the OTC Bulletin Board and if prices for the Common Stock are
then reported in the “Pink Sheets” published by Pink OTC Markets, Inc. (or a similar organization or agency succeeding
to its functions of reporting prices), the most recent bid price per share of the Common Stock so reported, or (d) in all
other cases, the fair market value of a share of Common Stock as determined by an independent appraiser selected in good faith
by the Holders of a majority in interest of the Securities then outstanding and reasonably acceptable to the Company, the fees
and expenses of which shall be paid by the Company.


 


		b)	“Trading Day” means a day on which the principal Trading Market is open for
business.  



 


c)          “Trading
Market” means any market or exchange on which the Common Stock is listed or quoted for trading on the date in question.


 


Section 2.                      Exercise.


 


a) Exercise of the
purchase rights represented by this Warrant may be made, in whole or in part, at any time or times on or after the Initial Exercise
Date and on or before the Termination Date by delivery to the Company (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 the Holder appearing on the books of the Company) of
a duly executed facsimile copy of the Notice of Exercise Form annexed hereto. Within three (3) Trading Days following the date
of exercise as aforesaid, the Holder shall deliver the aggregate Exercise Price for the shares specified in the applicable Notice
of Exercise by wire transfer or cashier’s check drawn on a United States bank unless the cashless exercise procedure specified
in Section 2(c) below is specified in the applicable Notice of Exercise. Notwithstanding anything herein to the contrary, the Holder
shall not be required to physically surrender this Warrant to the Company until the Holder has purchased all of the Warrant Shares
available hereunder and the Warrant has been exercised in full, in which case, the Holder shall surrender this Warrant to the Company
for cancellation within three (3) Trading Days of the date the final Notice of Exercise is delivered to the Company. Partial exercises
of this Warrant resulting in purchases of a portion of the total number of Warrant Shares available hereunder shall have the effect
of lowering the outstanding number of Warrant Shares purchasable hereunder in an amount equal to the applicable number of Warrant
Shares purchased.  The Holder and the Company shall maintain records showing the number of Warrant Shares purchased and
the date of such purchases. The Company shall deliver any objection to any Notice of Exercise Form within one (1) Trading Day of
receipt of such notice.  The Holder and any assignee, by acceptance of this Warrant, acknowledge and agree that, by
reason of the provisions of this paragraph, following the purchase of a portion of the Warrant Shares hereunder, the number of
Warrant Shares available for purchase hereunder at any given time may be less than the amount stated on the face hereof.


 




    	 



    	 



    

 


b) Exercise Price.  The
exercise price per share of the Common Stock under this Warrant shall be $ [120% of the public offering price of the
Units], subject to adjustment hereunder (the “Exercise Price”).


 


c) Cashless Exercise.
If at the time of exercise hereof there is no effective registration statement permitting the issuance of the Warrant Shares, or
the prospectus contained therein is not available for the issuance of the Warrant Shares to the Holder, then this Warrant may be
exercised, in whole or in part, at such time by means of a “cashless exercise” in which the Holder shall be entitled
to receive a certificate for the number of Warrant Shares equal to the quotient obtained by dividing [(A-B) (X)] by (A), where:


 


	 	(A) = the VWAP on the Trading Day immediately preceding the date on which Holder elects to exercise this Warrant by means of a “cashless exercise”;


 


	 	(B) = the Exercise Price of this Warrant, as adjusted hereunder; and


 


	 	(X) = the number of Warrant Shares that would be issuable upon exercise of this Warrant in accordance with the terms of this Warrant if such exercise were by means of a cash exercise rather than a cashless exercise.


 


d) Mechanics
of Exercise.


 


i. Delivery of
Certificates Upon Exercise.  Certificates for shares purchased hereunder shall be transmitted by the Company’s
transfer agent (the “Transfer Agent”) to the Holder by crediting the account of the Holder’s prime broker
with The Depository Trust Company through its Deposit or Withdrawal at Custodian system (“DWAC”) if the Company
is then a participant in such system and either (A) there is an effective registration statement permitting the issuance of the
Warrant Shares to or resale of the Warrant Shares by Holder or (B) this Warrant is being exercised via cashless exercise, and otherwise
by physical delivery to the address specified by the Holder in the Notice of Exercise by the date that is three (3) Trading Days
after the latest of (A) the delivery to the Company of the Notice of Exercise, (B) surrender of this Warrant (if required) and
(C) payment of the aggregate Exercise Price as set forth above (including by cashless exercise, if permitted) (such date, the “Warrant
Share Delivery Date”).   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, with payment to the Company of the Exercise Price (or by cashless exercise, if permitted)
and all taxes required to be paid by the Holder, if any, pursuant to Section 2(d)(vi) prior to the issuance of such shares, having
been paid. If the Company fails for any reason to deliver to the Holder certificates evidencing the Warrant Shares subject to a
Notice of Exercise by the Warrant Share Delivery Date, the Company shall pay to the Holder, in cash, as liquidated damages and
not as a penalty, for each $1,000 of Warrant Shares subject to such exercise (based on the VWAP of the Common Stock on the date
of the applicable Notice of Exercise), $10 per Trading Day (increasing to $20 per Trading Day on the fifth Trading Day after such
liquidated damages begin to accrue) for each Trading Day after such Warrant Share Delivery Date until such certificates are delivered
or Holder rescinds such exercise.


 


ii. Delivery
of New Warrants Upon Exercise.  If this Warrant shall have been exercised in part, the Company shall, at the request
of a Holder and upon surrender of this Warrant certificate, at the time of delivery of the certificate or certificates representing
Warrant Shares, deliver to the Holder a new Warrant evidencing the rights of the 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.


 


iii. Rescission
Rights.  If the Company fails to cause the Transfer Agent to transmit to the Holder a certificate or the certificates
representing the Warrant Shares pursuant to Section 2(d)(i) by the Warrant Share Delivery Date, then the Holder will have the right
to rescind such exercise.


 




    	 



    	 



    

 


iv. Compensation
for Buy-In on Failure to Timely Deliver Certificates Upon Exercise.  In addition to any other rights available to
the Holder, if the Company fails to cause the Transfer Agent to transmit to the Holder a certificate or the certificates representing
the Warrant Shares pursuant to an exercise on or before the Warrant Share Delivery Date, and if after such date the Holder is required
by its broker to purchase (in an open market transaction or otherwise) or the Holder’s brokerage firm otherwise purchases,
shares of Common Stock to deliver in satisfaction of a sale by the Holder of the Warrant Shares which the Holder anticipated receiving
upon such exercise (a “Buy-In”), then the Company shall (A) pay in cash to the Holder the amount, if any, by
which (x) the Holder’s total purchase price (including brokerage commissions, if any) for the shares of Common Stock so purchased
exceeds (y) the amount obtained by multiplying (1) the number of Warrant Shares that the Company was required to deliver to the
Holder in connection with the exercise at issue times (2) the price at which the sell order giving rise to such purchase obligation
was executed, and (B) at the option of the Holder, either reinstate the portion of the Warrant and equivalent number of Warrant
Shares for which such exercise was not honored (in which case such exercise shall be deemed rescinded) or deliver to the Holder
the number of Warrant Shares that would have been issued had the Company timely complied with its exercise and delivery obligations
hereunder.  For example, if the Holder purchases shares of Common Stock having a total purchase price of $11,000 to cover
a Buy-In with respect to an attempted exercise of this Warrant for Warrant Shares, and sells such shares of Common Stock at an
aggregate sale price of $10,000 in connection with the sell order giving rise to such purchase obligation, under clause (A) of
the immediately preceding sentence the Company shall be required to pay the Holder $1,000. The Holder shall provide the Company
written notice indicating the amounts payable to the Holder in respect of the Buy-In and, upon request of the Company, evidence
of the amount of such loss.  Nothing herein shall limit a Holder’s right to pursue any other remedies available
to it hereunder, at law or in equity including, without limitation, a decree of specific performance and/or injunctive relief with
respect to the Company’s failure to timely deliver certificates representing the Warrant Shares upon exercise of the Warrant
as required pursuant to the terms hereof.


 


v. No Fractional
Shares or Scrip.  No fractional shares or scrip representing fractional shares shall be issued upon the exercise
of this Warrant.  As to any fraction of a share which the Holder would otherwise be entitled to purchase upon such exercise,
the Company shall, at its election, either pay a cash adjustment in respect of such final fraction in an amount equal to such fraction
multiplied by the Exercise Price or round up to the next whole share.


 


vi. Charges,
Taxes and Expenses.  Issuance of certificates for Warrant Shares shall be made without charge to the Holder for any
issue or transfer tax 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.  The Company shall pay all Transfer Agent fees required for
same-day processing of any Notice of Exercise.


 


vii. 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.


 


e) Holder’s
Exercise Limitations.  A Holder shall not have the right to exercise any portion of this Warrant, and the Company
shall not be obligated to effect any exercise of this Warrant, pursuant to Section 2 or otherwise, to the extent that after giving
effect to such issuance after exercise as set forth on the applicable Notice of Exercise, the Holder (together with the Holder’s
Affiliates, and any other Persons acting as a group together with the Holder or any of the Holder’s Affiliates), would beneficially
own in excess of the Beneficial Ownership Limitation (as defined below).  For purposes of the foregoing sentence, the number
of shares of Common Stock beneficially owned by the Holder and its Affiliates shall include the number of shares of Common Stock
issuable upon exercise of this Warrant with respect to which such determination is being made, but shall exclude the number of
shares of Common Stock which would be issuable upon (i) exercise of the remaining, nonexercised portion of this Warrant beneficially
owned by the Holder or any of its Affiliates and (ii) exercise or conversion of the unexercised or nonconverted portion of any
other securities of the Company (including, without limitation, any other  Common Stock Equivalents) subject to a limitation
on conversion or exercise analogous to the limitation contained herein beneficially owned by the Holder or any of its Affiliates. 
Except as set forth in the preceding sentence, for purposes of this Section 2(e), beneficial ownership shall be calculated in accordance
with Section 13(d) of the Exchange Act and the rules and regulations promulgated thereunder, it being acknowledged by the Holder
that the Company is not representing to the Holder that such calculation is in compliance with Section 13(d) of the Exchange Act
and the Holder is solely responsible for any schedules required to be filed in accordance therewith.  To the extent that
the limitation contained in this Section 2(e) applies, the determination of whether this Warrant is exercisable (in relation to
other securities owned by the Holder together with any Affiliates) and of the portion of this Warrant that is exercisable shall
be in the sole discretion of the Holder, and the submission of a Notice of Exercise shall be deemed to be the Holder’s determination
that this Warrant is exercisable (in relation to other securities owned by the Holder together with any Affiliates) with respect
to the portion of this Warrant exercised as set forth in the Notice of Exercise, in each case subject to the Beneficial Ownership
Limitation, and the Company shall have no obligation to verify or confirm the accuracy of such determination.  In addition,
a determination as to any group status as contemplated above shall be determined in accordance with Section 13(d) of the Exchange
Act and the rules and regulations promulgated thereunder.  For purposes of this Section 2(e), in determining the number
of outstanding shares of Common Stock, a Holder may rely on the number of outstanding shares of Common Stock as reflected in (A)
the Company’s most recent periodic or annual report filed with the Commission, as the case may be, (B) a more recent public
announcement by the Company or (C) a more recent written notice by the Company or the Transfer Agent setting forth the number of
shares of Common Stock outstanding.  Upon the written or oral request of a Holder, the Company shall within two Trading Days
confirm orally and in writing to the Holder the number of shares of Common Stock then outstanding.  In any case, the number
of outstanding shares of Common Stock shall be determined after giving effect to the conversion or exercise of securities of the
Company, including this Warrant, by the Holder or its Affiliates since the date as of which such number of outstanding shares of
Common Stock was reported.  The “Beneficial Ownership Limitation” shall be 4.99% of the number of
shares of the Common Stock outstanding immediately after giving effect to the issuance of shares of Common Stock issuable upon
exercise of this Warrant.  The Holder, upon not less than 61 days’ prior notice to the Company, may increase or
decrease the Beneficial Ownership Limitation provisions of this Section 2(e), provided that the Beneficial Ownership Limitation
in no event exceeds 9.99% of the number of shares of the Common Stock outstanding immediately after giving effect to the issuance
of shares of Common Stock upon exercise of this Warrant held by the Holder and the provisions of this Section 2(e) shall continue
to apply.  Any such increase or decrease will not be effective until the 61st day after such notice is delivered to the
Company.  The provisions of this paragraph shall be construed and implemented in a manner otherwise than in strict conformity
with the terms of this Section 2(e) to correct this paragraph (or any portion hereof) which may be defective or inconsistent with
the intended Beneficial Ownership Limitation herein contained or to make changes or supplements necessary or desirable to properly
give effect to such limitation. The limitations contained in this paragraph shall apply to a successor holder of this Warrant.


 




    	 



    	 



    

 


Section 3.                      Certain
Adjustments.


 


a) Stock Dividends
and Splits. If the Company, at any time while this Warrant is outstanding: (i) pays a stock dividend or otherwise makes 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 upon exercise of this
Warrant), (ii) subdivides outstanding shares of Common Stock into a larger number of shares, (iii) combines (including by way of
reverse stock split) outstanding shares of Common Stock into a smaller number of shares, or (iv) 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
immediately before such event and of which the denominator shall be the number of shares of Common Stock outstanding immediately
after such event, and the number of shares issuable upon exercise of this Warrant shall be proportionately adjusted such that the
aggregate Exercise Price of this Warrant shall remain unchanged.  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
or, in the case of a subdivision, combination or re-classification, immediately after the effective date thereof.


 


b) Subsequent
Equity Sales. If the Company or any Subsidiary thereof, as applicable, at any time while this Warrant is outstanding, shall
sell or grant any option to purchase, or sell or grant any right to reprice, or otherwise dispose of or issue (or announce any
offer, sale, grant or any option to purchase or other disposition) any Common Stock or Common Stock Equivalents, at an effective
price per share less than the Exercise Price then in effect (such lower price, the “Base Share Price” and such
issuances collectively, a “Dilutive Issuance”) (it being understood and agreed that if the holder of the Common
Stock or Common Stock Equivalents so issued shall at any time, whether by operation of purchase price adjustments, reset provisions,
floating conversion, exercise or exchange prices or otherwise, or due to warrants, options or rights per share which are issued
in connection with such issuance, be entitled to receive shares of Common Stock at an effective price per share that is less than
the Exercise Price, such issuance shall be deemed to have occurred for less than the Exercise Price on such date of the Dilutive
Issuance at such effective price), then simultaneously with the consummation of each Dilutive Issuance the Exercise Price applicable
to the then-unexercised portion of this Warrant shall be reduced and only reduced to equal the Base Share Price.  Such
adjustment shall be made whenever such Common Stock or Common Stock Equivalents are issued.  Notwithstanding the foregoing,
no adjustments shall be made, paid or issued under this Section 3(b) in respect of an Exempt Issuance.  The Company shall
notify the Holder, in writing, no later than the Trading Day following the issuance or deemed issuance of any Common Stock or Common
Stock Equivalents subject to this Section 3(b), indicating therein the applicable issuance price, or applicable reset price, exchange
price, conversion price and other pricing terms (such notice, the “Dilutive Issuance Notice”).  For
purposes of clarification, whether or not the Company provides a Dilutive Issuance Notice pursuant to this Section 3(b), upon the
occurrence of any Dilutive Issuance, the Holder is entitled to receive a number of Warrant Shares based upon the Base Share Price
regardless of whether the Holder accurately refers to the Base Share Price in the Notice of Exercise.


 




    	 



    	 



    

 


For purposes of this Section 3(b), the
term “Exempt Issuance” shall mean the issuance of (a) shares of Common Stock, common stock equivalents, restricted
stock units or other Options to employees, consultants, officers or directors of the Company pursuant to any existing or future
stock option, restricted stock, stock purchase or other equity compensation plan duly adopted for such purpose, by a majority of
the members of the Board of Directors or a majority of the members of a committee of non-employee directors established for such
purpose, and the issuance of Common Stock in respect of such common stock equivalents, restricted stock units or other Options,
(b) securities (including Common Stock and common stock equivalents) issued or issuable upon the exercise, conversion or exchange
of securities issued and outstanding on the date hereof, including the Warrants, provided that such securities have not been amended
since the date hereof to increase the number of such securities or to decrease the exercise price, exchange price or conversion
price of such securities, (c) securities issued or issuable as payment of dividends or interest to any holders of Common Stock
or common stock equivalents, and (d) securities issued pursuant to acquisitions or strategic transactions approved by a majority
of the disinterested directors of the Company, provided that any such issuance shall only be to a Person (or to the equityholders
of a Person) that the Company’s Board of Directors determines in good faith is, itself or through its subsidiaries, an operating
company or an owner of an asset in a business synergistic with the business of the Company and shall provide to the Company additional
benefits in addition to the investment of funds, but shall not, for the purposes of this clause (d), include a transaction in which
the Company is issuing securities primarily for the purpose of raising capital or to an entity whose primary business is investing
in securities.


 


c) Subsequent
Rights Offerings.  In addition to any adjustments pursuant to the other subsections of this Section 3, if at any
time the Company grants, issues or sells any Common Stock Equivalents or rights to purchase stock, warrants, securities or other
property pro rata to the record holders of any class of shares of Common Stock (the “Purchase Rights”), then
the Holder will be entitled to acquire, upon the terms applicable to such Purchase Rights, the aggregate Purchase Rights which
the Holder could have acquired if the Holder had held the number of shares of Common Stock acquirable upon complete exercise of
this Warrant (without regard to any limitations on exercise hereof, including without limitation, the Beneficial Ownership Limitation)
immediately before the date on which a record is taken for the grant, issuance or sale of such Purchase Rights, or, if no such
record is taken, the date as of which the record holders of shares of Common Stock are to be determined for the grant, issue or
sale of such Purchase Rights (provided, however, to the extent that the Holder’s right to participate in any such Purchase
Right would result in the Holder exceeding the Beneficial Ownership Limitation, then the Holder shall not be entitled to participate
in such Purchase Right to such extent (or beneficial ownership of such shares of Common Stock as a result of such Purchase Right
to such extent) and such Purchase Right to such extent shall be held in abeyance for the Holder until such time, if ever, as its
right thereto would not result in the Holder exceeding the Beneficial Ownership Limitation).


 


d) Pro Rata Distributions.  If
the Company, at any time while this Warrant is outstanding, shall distribute to all holders of Common Stock (and not to the Holder)
evidences of its indebtedness or assets (including cash and cash dividends) or rights or warrants to subscribe for or purchase
any security other than the Common Stock (which shall be subject to Section 3(b)), then in each such case the Exercise Price shall
be adjusted by multiplying the Exercise Price in effect immediately prior to the record date fixed for determination of stockholders
entitled to receive such distribution by a fraction of which the denominator shall be the VWAP determined as of the record date
mentioned above, and of which the numerator shall be such VWAP on such record date less the then per share fair market value at
such record date of the portion of such assets or evidence of indebtedness so distributed applicable to one outstanding share of
the Common Stock as determined by the Board of Directors in good faith.  In either case the adjustments shall be described
in a statement provided to the Holder of the portion of assets or evidences of indebtedness so distributed or such subscription
rights applicable to one share of Common Stock.  Such adjustment shall be made whenever any such distribution is made
and shall become effective immediately after the record date mentioned above.


  




    	 



    	 



    

 


e) Fundamental
Transaction. If, at any time while this Warrant is outstanding, (i) the Company, directly or indirectly, in one or more related
transactions effects any merger or consolidation of the Company with or into another Person, (ii) the Company, directly or indirectly,
effects any sale, lease, license, assignment, transfer, conveyance or other disposition of all or substantially all of its assets
in one or a series of related transactions, (iii) any, direct or indirect, purchase offer, tender offer or exchange offer (whether
by the Company or another Person) is completed pursuant to which holders of Common Stock are permitted to sell, tender or exchange
their shares for other securities, cash or property and has been accepted by the holders of 50% or more of the outstanding Common
Stock, (iv) the Company, directly or indirectly, in one or more related transactions effects any reclassification, reorganization
or recapitalization of the Common Stock or any compulsory share exchange pursuant to which the Common Stock is effectively converted
into or exchanged for other securities, cash or property, or (v) the Company, directly or indirectly, in one or more related transactions
consummates a stock or share purchase agreement or other business combination (including, without limitation, a reorganization,
recapitalization, spin-off or scheme of arrangement) with another Person or group of Persons whereby such other Person or group
acquires more than 50% of the outstanding shares of Common Stock (not including any shares of Common Stock held by the other Person
or other Persons making or party to, or associated or affiliated with the other Persons making or party to, such stock or share
purchase agreement or other business combination) (each a “Fundamental Transaction”), then, upon any subsequent
exercise of this Warrant, the Holder shall have the right to receive, for each Warrant Share that would have been issuable upon
such exercise immediately prior to the occurrence of such Fundamental Transaction, at the option of the Holder (without regard
to any limitation in Section 2(e) on the exercise of this Warrant), the number of shares of Common Stock of the successor or acquiring
corporation or of the Company, if it is the surviving corporation, and any additional consideration (the “Alternate Consideration”)
receivable as a result of such Fundamental Transaction by a holder of the number of shares of Common Stock for which this Warrant
is exercisable immediately prior to such Fundamental Transaction (without regard to any limitation in Section 2(e) on the exercise
of this Warrant).  For purposes of any such exercise, the determination of the Exercise Price shall be appropriately
adjusted to apply to such Alternate Consideration based on the amount of Alternate Consideration issuable in respect of one share
of Common Stock in such Fundamental Transaction, and the Company shall apportion the Exercise Price among the Alternate Consideration
in a reasonable manner reflecting the relative value of any different components of the Alternate Consideration.  If
holders of Common Stock are given any choice as to the securities, cash or property to be received in a Fundamental Transaction,
then the Holder shall be given the same choice as to the Alternate Consideration it receives upon any exercise of this Warrant
following such Fundamental Transaction.  Notwithstanding anything to the contrary, in the event of a Fundamental Transaction
that is (1) an all cash transaction, (2) a “Rule 13e-3 transaction” as defined in Rule 13e-3 under the Exchange Act,
or (3) a Fundamental Transaction involving a person or entity not traded on a national securities exchange, including, but not
limited to, the Nasdaq Global Select Market, the Nasdaq Global Market, or the Nasdaq Capital Market, the Company or any Successor
Entity (as defined below) shall, at the Holder’s option, exercisable at any time concurrently with, or within 30 days after,
the consummation of the Fundamental Transaction, purchase this Warrant from the Holder by paying to the Holder an amount of cash
equal to the Black Scholes Value of the remaining unexercised portion of this Warrant on the date of the consummation of such Fundamental
Transaction.  “Black Scholes Value” means the value of this Warrant based on the Black and Scholes
Option Pricing Model obtained from the “OV” function on Bloomberg, L.P. (“Bloomberg”) determined
as of the day of consummation of the applicable Fundamental Transaction for pricing purposes and reflecting (A) a risk-free interest
rate corresponding to the U.S. Treasury rate for a period equal to the time between the date of the public announcement of the
applicable Fundamental Transaction and the Termination Date, (B) an expected volatility equal to the greater of 100% and the 100
day volatility obtained from the HVT function on Bloomberg as of the Trading Day immediately following the public announcement
of the applicable Fundamental Transaction, (C) the underlying price per share used in such calculation shall be the sum of the
price per share being offered in cash, if any, plus the value of any non-cash consideration, if any, being offered in such Fundamental
Transaction and (D) a remaining option time equal to the time between the date of the public announcement of the applicable Fundamental
Transaction and the Termination Date.  The Company shall cause any successor entity in a Fundamental Transaction in which
the Company is not the survivor (the “Successor Entity”) to assume in writing all of the obligations of the
Company under this Warrant in accordance with the provisions of this Section 3(e) pursuant to written agreements in form and substance
reasonably satisfactory to the Holder and approved by the Holder (without unreasonable delay) prior to such Fundamental Transaction
and shall, at the option of the Holder, deliver to the Holder in exchange for this Warrant a security of the Successor Entity evidenced
by a written instrument substantially similar in form and substance to this Warrant which is exercisable for a corresponding number
of shares of capital stock of such Successor Entity (or its parent entity) equivalent to the number of shares of Common Stock acquirable
and receivable upon exercise of this Warrant (without regard to any limitations on the exercise of this Warrant) prior to such
Fundamental Transaction, and with an exercise price which applies the exercise price hereunder to such shares of capital stock
(but taking into account the relative value of the shares of Common Stock pursuant to such Fundamental Transaction and the value
of such shares of capital stock, such number of shares of capital stock and such exercise price being for the purpose of protecting
the economic value of this Warrant immediately prior to the consummation of such Fundamental Transaction), and which is reasonably
satisfactory in form and substance to the Holder. Upon the occurrence of any such Fundamental Transaction, the Successor Entity
shall succeed to, and be substituted for (so that from and after the date of such Fundamental Transaction, the provisions of this
Warrant referring to the “Company” shall refer instead to the Successor Entity), and may exercise every right and power
of the Company and shall assume all of the obligations of the Company under this Warrant with the same effect as if such Successor
Entity had been named as the Company herein.


 


f) Calculations.
All 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.
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.


 


g) Notice to
Holder.


 


i. Adjustment
to Exercise Price. Whenever the Exercise Price is adjusted pursuant to any provision of this Section 3, the Company shall promptly
mail to the Holder a notice setting forth the Exercise Price after such adjustment and setting forth a brief statement of the facts
requiring such adjustment.


 




    	 



    	 



    

 


ii. Notice to
Allow Exercise by Holder. If (A) the Company shall declare a dividend (or any other distribution in whatever form) on the Common
Stock, (B) the Company shall declare a special nonrecurring cash dividend on or a redemption of the Common Stock, (C) the Company
shall authorize the granting to all holders of the Common Stock rights or warrants to subscribe for or purchase any shares of capital
stock of any class or of any rights, (D) the approval of any stockholders of the Company shall be required in connection with any
reclassification of the Common Stock, any consolidation or merger to which the Company is a party, any sale or transfer of all
or substantially all of the assets of the Company, or any compulsory share exchange whereby the Common Stock is converted into
other securities, cash or property, or (E) the Company shall authorize the voluntary or involuntary dissolution, liquidation or
winding up of the affairs of the Company, then, in each case, the Company shall cause to be mailed to the Holder at its last address
as it shall appear upon the Warrant Register of the Company, at least 20 calendar days prior to the applicable record or effective
date hereinafter specified, a notice stating (x) the date on which a record is to be taken for the purpose of such dividend, distribution,
redemption, rights or warrants, or if a record is not to be taken, the date as of which the holders of the Common Stock of record
to be entitled to such dividend, distributions, redemption, rights or warrants are to be determined or (y) the date on which such
reclassification, consolidation, merger, sale, transfer or share exchange is expected to become effective or close, and (z) the
date as of which it is expected that holders of the Common Stock of record shall be entitled to exchange their shares of the Common
Stock for securities, cash or other property deliverable upon such reclassification, consolidation, merger, sale, transfer or share
exchange; provided that the failure to mail such notice or any defect therein or in the mailing thereof shall not affect the validity
of the corporate action required to be specified in such notice.  To the extent that any notice provided hereunder constitutes,
or contains, material, non-public information regarding the Company or any of the Subsidiaries, the Company shall simultaneously
file such notice with the Commission pursuant to a Current Report on Form 8-K.  The Holder shall remain entitled to exercise
this Warrant during the period commencing on the date of such notice to the effective date of the event triggering such notice
except as may otherwise be expressly set forth herein.


 


Section 4.                      Transfer
of Warrant.


 


a) Transferability.  This
Warrant and all rights hereunder (including, without limitation, any registration rights) are transferable, in whole or in part,
upon surrender of this Warrant at the principal office of the Company or its designated agent, 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, as applicable, 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.  The Warrant, if properly
assigned in accordance herewith, 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. All Warrants issued on transfers or exchanges shall be dated the initial issuance date
of this Warrant and shall be identical with this Warrant except as to the number of Warrant Shares issuable pursuant thereto.


 


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.


 


Section 5.            The
Company’s Option to Redeem.


 


(a)           If
a registration statement is effective for the Warrant Shares under the 1933 Act, and if the closing price of the Common Stock on
the Trading Market is $ [200% of the Exercise Price] or more for 30 consecutive Trading Days, then this Warrant will be
subject to redemption at the option of the Company.  If the Warrant is subject to redemption, as set forth herein, the
Company may redeem the Warrant at any time at a price calculated by multiplying $0.000001 by the number of Warrant Shares into
which the Warrant is exercisable (the “Redemption Amount”).


 


(b)           The
Company shall deliver to the Holder a written Notice of Redemption (the “Notice of Redemption”) specifying the
date for the redemption (the “Redemption Payment Date”), which date will not be less than 10 nor more than 30
days after the date of the Notice of Redemption (the “Redemption Period”).  A Notice of Redemption
will not be effective with respect to any portion of this Warrant for which the Holder has previously delivered a Notice of Exercise
and paid to the Company the entire Exercise Price of such exercise.  Upon receipt of the Notice of Redemption, the Holder
will have until 5:00PM (New York time) on the date before the Redemption Payment Date to exercise the Warrant in whole or in part,
pursuant to Section 2 of this Warrant.  For a Holder to effect such an exercise, the Company must have received this
Warrant, with the Notice of Exercise attached hereto appropriately completed and duly endorsed, and payment of the Exercise Price
no later than 5:00PM (New York time) the date before the Redemption Payment Date.  The Holder’s right to exercise
the Warrant or any portion thereof called for redemption will terminate at 5:00PM (New York time) on the date of the Redemption
Payment Date, unless the Company subsequently fails to pay the applicable Redemption Amount.  Upon the Redemption Payment
Date, the Redemption Amount will be recalculated based on any Warrant Shares the Holder may have exercised prior to the Redemption
Payment Date pursuant to this Section 5(b).  On the Redemption Payment Date, the Redemption Amount, as recalculated (if
at all), will be paid in good funds to the Holder.


 




    	 



    	 



    

 


Section 6.                      Miscellaneous.


 


a) No Rights
as Stockholder Until Exercise.  This Warrant does not entitle the Holder to any voting rights, dividends or other
rights as a stockholder of the Company prior to the exercise hereof in accordance with Section 2.


 


b) 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.


 


c) 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 not be a Trading Day, then, such action may be taken or such right may be exercised on the next
succeeding Trading Day.


 


d) 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.  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 and payment for such Warrant Shares in accordance herewith, be duly authorized, validly issued, fully paid and
nonassessable and free from all taxes, liens and charges created by the Company in respect of the issue thereof (other than taxes
in respect of any transfer occurring contemporaneously with such issue).


 


Except as and to the
extent 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 (i) 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, (ii) 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 (iii) 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.


 


e) Jurisdiction.
All questions concerning the construction, validity, enforcement and interpretation of this Warrant shall be determined in accordance
with the laws of the State of Delaware without giving effect to any choice or conflict of law provision or rule (whether of the
State of Delaware or any other jurisdiction) that would cause the application of laws of any jurisdiction other than those of the
State of Delaware.


 




    	 



    	 



    

 


f) Nonwaiver
and Expenses.  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 the Holder’s rights, powers or remedies.  Without
limiting any other provision of this Warrant, if the Company willfully and knowingly fails to comply with any provision of this
Warrant, which results in any material damages to the Holder, the Company shall pay to the Holder such amounts as shall be sufficient
to cover any costs and expenses including, but not limited to, reasonable attorneys’ fees, including those of appellate proceedings,
incurred by the Holder in collecting any amounts due pursuant hereto or in otherwise enforcing any of its rights, powers or remedies
hereunder.


 


g) Notices.  Any
notice, request or other document required or permitted to be given or delivered to the Holder by the Company shall be delivered
to the Holder by a nationally recognized overnight courier service or by first class mail, postage prepaid, at the address of the
Holder as reflected on the books of the Company.


 


h) Limitation
of Liability.  No provision hereof, in the absence of any affirmative action by the Holder to exercise this Warrant
to purchase Warrant Shares, and no enumeration herein of the rights or privileges of the Holder, shall give rise to any liability
of the 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.


 


i) Remedies.  The
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 and
not to assert the defense in any action for specific performance that a remedy at law would be adequate.


 


j) 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 and permitted assigns of the Company and the successors and permitted
assigns of Holder.  The provisions of this Warrant are intended to be for the benefit of any Holder from time to time
of this Warrant and shall be enforceable by the Holder or holder of Warrant Shares.


 


k) Amendment.  This
Warrant may be modified or amended or the provisions hereof waived with the written consent of the Company and the Holder.


 


l) 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.


 


m) 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.


 


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


 


(Signature Page Follows)


 




    	 



    	 



    

 


IN WITNESS WHEREOF, the
Company has caused this Warrant to be executed by its officer thereunto duly authorized as of the date first above indicated.


  


MICROLIN BIO, INC.


 


	By:	 	 
	 	Name: Joseph Hernandez	 
	 	Title: Chief Executive Officer	 


 




    	 



    	 



    

 


NOTICE OF EXERCISE


 


TO:           MICROLIN
BIO, 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 the form of (check applicable box):


 


[  ] in lawful money of the United
States; or


 


[  ] [if permitted] the cancellation
of such number of Warrant Shares as is necessary, in accordance with the formula set forth in subsection 2(c), to exercise this
Warrant with respect to the maximum number of Warrant Shares purchasable pursuant to the cashless exercise procedure set forth
in subsection 2(c).


 


(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 DWAC Account Number or by physical delivery of a certificate to:


 


	 	 


 


	 	 


 


	 	 


 


[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, [____]
all of or [_______] shares of the foregoing Warrant and all rights evidenced thereby are hereby assigned to


  


_______________________________________________
whose address is


 


_______________________________________________________________.


  


_______________________________________________________________


 


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 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.