Document:

INDEMNITY
AGREEMENT

THIS
INDEMNITY AGREEMENT (this "Agreement") is entered into as of December 17, 2015 by and between Reza Noorkayhani,
an individual (the "Indemnitor"), and American Boarding Company, a Delaware corporation (“AMIB”),
and Microlin Bio, Inc., a Delaware corporation (“Microlin”) (AMIB and Microlin are, collectively, the "Indemnitees").

RECITALS

WHEREAS,
Microlin, AMIB, and Microlin Merger Sub, Inc. have entered into that certain Agreement and Plan of Merger and Reorganization (the
"Merger Agreement"), dated as of the date hereof, and

WHEREAS,
the execution and delivery of this Agreement and the consummation of the transactions contemplated hereby are required in connection
with the Merger Agreement,

NOW,
THEREFORE, in consideration of the premises and the covenants, promises and agreements herein set forth and for other good and
valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto, intending legally to
be bound, agree as follows:

1.                 
Liabilities of AMIB. Indemnitor represents
and warrants to Indemnitees that Schedule A hereto contains a complete and accurate listing of all Liabilities of AMIB
as of the Effective Time as defined in the Merger Agreement. Other than as set forth on Schedule A hereto, as of the Effective
Time, AMIB is not liable for any other liability, debt, obligation, deficiency, tax, penalty, fine, claim, cause of action or
other loss, cost or expense of any kind or nature whatsoever, whether asserted or unasserted, absolute or contingent, accrued
or unaccrued, liquidated or unliquidated, and whether due or to become due.

2.                 
Indemnification. In connection with the
Merger Agreement, as of the Effective Time as defined therein, Indemnitor shall assume and pay, honor and discharge when due,
and shall indemnify Indemnitors and their affiliates against, all debts, adverse claims, liabilities, judgments and obligations,
including tax obligations, of AMIB which are in excess of a total amount of $90,000.00, whether accrued, contingent or otherwise
and whether known or unknown, including those arising under any law (including common law) or any rule or regulation of any governmental
authority or imposed by any court or any arbitrator in a binding arbitration resulting from, arising out of or relating to the
assets, activities, operations, actions or omissions of AMIB, or products manufactured or sold thereby or services provided thereby,
or under contracts, agreements (whether written or oral), leases, commitments or undertakings thereof (the “Liabilities”).

3.                 
Assistance With Modification of Terms.
To the extent that any of the Liabilities of AMIB, whether set forth on Schedule A or otherwise, are, by their terms, convertible
into any capital stock of AMIB, Indemnitor shall assist with and facilitate the written modification of the terms of such Liabilities
to remove any such right to conversion. In addition to the indemnification provided under Section 2, above, Indemnitor shall defend
and indemnify the Indemnitees against any claim by any person or entity that their Liability is or was convertible to capital
stock of AMIB.

    	 	 	 

     

    

4.                 
Release. Indemnitor, on behalf of Indemnitor
and Indemnitor’s heirs, personal representatives, successors and assigns (collectively, the "Releasors"),
hereby forever fully and irrevocably releases and discharges the Indemnitees and each of thier affiliates, and each of their respective
predecessors, successors, direct or indirect subsidiaries, directors, officers, employees, agents and other representatives (collectively,
the "Released Parties"), from any and all actions, suits, claims, demands, debts, agreements, obligations, promises,
judgments and liabilities of any kind whatsoever in law or equity and causes of action of every kind and nature or otherwise (including,
claims for damages, costs, expenses, and attorneys’, brokers’ and accountants’ fees and expenses) arising out
of or related to events, facts, conditions or circumstances existing or arising prior to or after the date hereof or the Effective
Date, which the Releasors can, shall or may have against the Released Parties, whether known or unknown, suspected or unsuspected,
anticipated or unanticipated (collectively, the "Released Claims"). The Releasors irrevocably agree to refrain
from instituting any suit, action or proceeding of any kind, in any court or before any tribunal, against any Released Party based
upon, arising out of, or relating to any Released Claim, participating, assisting or cooperating in any such suit, action or proceeding
or encouraging or soliciting any third party to institute any such suit, action or proceeding. Notwithstanding the preceding sentences
of this Section 4, "Released Claims" does not include, and the provisions of this Section 4 shall
not release, the Indemnitee’s commitment to pay certain Liabilities of AMIB, up to a total maximum amount of $90,000.00,
as set forth in Section 3.5 of the Merger Agreement.

5.                 
Miscellaneous.

5.1             
Assignment; Beneficiaries. This Agreement shall be binding upon and inure to the benefit of the successors and assigns
of the parties hereto, and none of the rights or obligations herein may be assigned or delegated without the prior written consent
of the other party hereto. Except as expressly set forth herein, the covenants and agreements
set forth in this Agreement are for the sole benefit of the parties hereto and their successors and permitted assigns and shall
not be construed as conferring any rights on any other Persons.

5.2             
Entire Agreement and Amendment. This Agreement (including Schedule A hereto) constitutes the entire agreement of
the parties hereto and supersedes any and all prior negotiations, correspondence, understandings and agreements between the parties
hereto with respect to the subject matter hereof. This Agreement may only be amended by written instrument signed by both parties
hereto.

5.3             
Governing Law; Jurisdiction and Venue. This Agreement, and any matter or dispute arising hereunder or in connection with
this Agreement, will be governed by and construed in accordance with the laws of the state of Delaware without giving effect to
conflict of laws principles thereof. Each party hereto irrevocably consents to the exclusive jurisdiction of the state and federal
courts located in New York City, New York, as well as to the jurisdiction of all courts to which an appeal may be taken from such
courts, for the purpose of any suit, action or other proceeding arising out of, or in connection with, this agreement or any of
the transactions contemplated hereby. Each party hereby expressly waives any and all rights to bring any suit, action or other
proceeding in or before any court or tribunal other than those located in New York City, New York.

    	 	2	 

     

    

5.4             
Severability. If any provision of this Agreement is held to be unenforceable for any reason, it shall be adjusted rather
than voided, if possible, in order to achieve the intent of the parties to the extent possible. In any event, all other provisions
of this Agreement shall be deemed valid and enforceable to the fullest extent practicable.

5.5             
Counterparts. This Agreement may be executed and delivered (including by facsimile transmission) in counterparts, both
of which will be considered one and the same agreement.

[SIGNATURE
PAGES TO FOLLOW]

    	 	3	 

     

    

 

IN
WITNESS WHEREOF, the parties hereto have caused this Indemnity Agreement to be executed as of the date first written above.

INDEMNITOR:

 

 /s/
Reza Noorkayhani

Reza Noorkayhani

 

INDEMNITEES:

 

AMERICAN
BOARDING COMPANY

 

By:
/s/ Reza Noorkayhani

Reza
Noorkayhani

Chief
Executive Officer

 

 

MICROLIN
BIO, INC.

 

By:
/s/ Joseph Hernandez

Joseph
Hernandez

Chief
Executive Officer

 

    	 	4	 

     

    

Schedule
A

	Name
    of Creditor	Document	Date	Principal
    Amount
	Narguesse
    Nourkeyhani	Promissory
    Note	5/22/14	$12,000
	Reza
    Noorkayhani	Promissory
    Note	9/28/14	$5,500
	Reza
    Noorkayhani	Promissory
    Note	11/24/14	$3,975
	Jenny
    Su	Promissory
    Note	12/10/14	$10,000
	Reza
    Noorkayhani	Promissory
    Note	6/30/15	$8,750
	Reza
    Noorkayhani	Promissory
    Note	12/1/15	$17,619
	Reza
    Noorkayhani	Promissory
    Note	12/1/15	$30,000
	Accounts
    Payable	Various	Various	$5,231
				$93,075.00

    	 	5AMENDMENT
TO PROMISSORY NOTES

WHEREAS,
American Boarding Company, a Delaware corporation, (“Maker”) has issued certain Promissory Notes to Reza Noorkayhani
in the principal amounts, and on the dates, set forth below (collectively, the “Notes”):

	Name
    of Creditor	Document	Date	Principal
    Amount
	Reza
    Noorkayhani	Promissory
    Note	9/28/14	$5,500
	Reza
    Noorkayhani	Promissory
    Note	11/24/14	$3,975
	Reza
    Noorkayhani	Promissory
    Note	6/30/15	$8,750
	Reza
    Noorkayhani	Promissory
    Note	12/1/15	$17,619
	Reza
    Noorkayhani	Promissory
    Note	12/1/15	$30,000
				$65,844.00

 

NOW,
THEREFORE, IT IS HEREBY AGREED AS FOLLOWS:

	All
provisions set forth in the Notes, or any of them, providing that any amounts due under the Notes are convertible to capital stock
of the Maker are hereby deleted. The Notes shall not be convertible to common stock, or any other class of capital stock, of the
Maker.
	All
other terms of the Notes not specifically modified by this Amendment shall remain in full force and effect.

 

 

/s/
Reza Noorkayhani

Reza
Noorkayhani

American
Board Company

 By:
/s/ Reza Noorkayhani

Reza
Noorkayhani, President and CEOAMENDMENT
TO PROMISSORY NOTE

 

WHEREAS,
American Boarding Company, a Delaware corporation, (“Maker”) has issued that certain Promissory Note to Narguesse
Nourkeyhani in the principal amount of $12,000 on May 22, 2014 (the “Note”),

NOW,
THEREFORE, IT IS HEREBY AGREED AS FOLLOWS:

	All
provisions set forth in the Note providing that any amounts due under the Note are convertible to capital stock of the Maker are
hereby deleted. The Note shall not be convertible to common stock, or any other class of capital stock, of the Maker.
	All
other terms of the Note not specifically modified by this Amendment shall remain in full force and effect.

 

/s/
Narguesse Nourkeyhani

Narguesse
Nourkeyhani

American
Board Company

 

By:
/s/ Reza Noorkayhani

Reza
Noorkayhani, President and CEO

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