Document:

Exhibit 10.6

 

REGISTRATION RIGHTS AGREEMENT

 

THIS REGISTRATION RIGHTS
AGREEMENT (this “Agreement”) is made and entered into as of October [___], 2014 by and among CDx, Inc., a Delaware
corporation (the “Company”), and the parties listed on Schedule I hereto (collectively, the “Investors”).
Capitalized terms used but not otherwise defined herein shall have the respective meanings ascribed to such terms in the Purchase
Agreement (as defined below).

 

WHEREAS, the Investors
are purchasing securities in the Company and have requested registration rights for such securities as a condition to purchasing
such securities;

 

WHEREAS, the Company
has agreed to provide the registration and other rights set forth in this Agreement for the benefit of the Investors to facilitate
their investment in the Company; and

 

NOW THEREFORE, in consideration
of the mutual covenants and agreements set forth herein and for good and valuable consideration, the receipt and sufficiency of
which is hereby acknowledged by each party hereto, the parties hereby agree as
follows:

 

ARTICLE
I

DEFINITIONS

 

Section
1.01     Definitions. 

 

The terms set forth
below are used herein as so defined:

 

“Business
Day” means a day other than a Saturday, Sunday or other day on which banks located in New York, New York are authorized
or required by law to close.

 

“Change of
Control” shall mean either (i) the acquisition of the Company by another person or entity by means of any transaction
or series of related transactions to which the Company is a party (including, without limitation, any stock acquisition, reorganization,
merger or consolidation, but excluding any such transaction if the primary purpose of such transaction is to change the Company’s
domicile, and excluding any equity financing the primary purpose of which is to raise operating capital for the Company) that results
in a transfer of at least fifty percent (50%) of the total voting power represented by the Company’s voting securities before
such acquisition; or (ii) a sale, lease, or other conveyance of all or substantially all of the Company’s assets.

 

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

 

“Common Stock”
means the Common Stock of the Company, par value $0.005 per share or, if a Merger has occurred, any securities issued upon the
exchange thereof in connection with such Merger.

 

“Exchange
Act” means the Securities Exchange Act of 1934, as amended.

 

“Financing”
means the private placement of Series B Preferred Stock and Warrants sold to investors pursuant to the Purchase Agreement.

 

“Holder”
means the record holder of any Registrable Securities.

 

    	 

    	 

    

 

“Included
Registrable Securities” has the meaning specified therefore in Section 2.02(a) of this Agreement.

 

“Losses”
has the meaning specified therefore in Section 2.06(a) of this Agreement.

 

“Majority-in-Interest”
means Investors holding a majority of the Registrable Securities.

 

“Managing
Underwriter” means, with respect to any Underwritten Offering, the book-running lead manager of such Underwritten Offering.

 

“Merger”
means a merger of the Company, either into a public company or a wholly-owned subsidiary of a public company, wherein the Company
survives as a public company or as a wholly-owned subsidiary thereof, and the Company’s existing security holders, including
purchasers of securities pursuant to the Purchase Agreement, become security holders of the public company.

 

“Piggyback
Registration” means a registration involving the sale of Common Stock by the Company as described further in Section
2.02(a) of this Agreement.

 

“Placement
Agent” means Paulson Investment Company, LLC.

 

“Placement
Agent Warrants” mean the warrants issuable to the Placement Agent and/or its assigns in connection with the purchase
of the securities sold pursuant to the Purchase Agreement or, if a Merger has occurred, any securities issued upon the exchange
thereof in connection with such Merger.

 

“Purchase
Agreement” means the Series B Preferred Stock and Warrant Purchase Agreement dated as of October [___], 2014 between
the Company and the investors named therein.

 

“Registrable
Securities” means, with respect to any Holder (i) any and all shares of Series B Preferred Stock which are purchased
under the Purchase Agreement, (ii) any shares of Company Common Stock issuable upon conversion of the Series B Preferred Stock
purchased under the Purchase Agreement and those shares of Series B Preferred Stock issuable upon exercise of the Warrants, (iii)
any shares of Company Common Stock issuable to the Placement Agent or its assigns upon exercise, conversion or exchange of warrants
issued to the Placement Agent in connection with the issuance of the Series B Preferred Stock and Warrants; and (iv) any securities
of the Company issued in respect of the shares of Series B Preferred Stock, Common Stock issued upon conversion of the Series B
Preferred Stock or Common Stock issued upon exercise of the Warrants by way of stock dividend or stock split or in connection with
a combination of shares, recapitalization, merger, consolidation or other reorganization or otherwise, each of which Registrable
Securities described under (i) through (iv) above are subject to the rights provided herein until such rights terminate pursuant
to the provisions hereof.

 

“Registration
Expenses” has the meaning specified therefore in Section 2.05(a) of this Agreement.

 

“Registration
Statement” means a registration statement under the Securities Act to permit the resale of the Registrable Securities.

 

“Rule 144”
means Rule 144 promulgated by the Commission pursuant to the Securities Act, as may be amended from time to time.

 

“Rule 145”
means Rule 145 promulgated by the Commission pursuant to the Securities Act, as may be amended from time to time.

 

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“Securities
Act” means the Securities Act of 1933, as amended.

 

“Selling Expenses”
has the meaning specified therefore in Section 2.05(a) of this Agreement.

 

“Selling Holder”
means a Holder who is selling Registrable Securities pursuant to a registration statement.

 

“Series B
Preferred Stock” means the Series B Preferred Stock of the Company, par value $0.001 per share sold pursuant to the Purchase
Agreement or, if a Merger has occurred, any securities issued upon the exchange thereof in connection with such Merger.

 

“Underwritten
Offering” means an offering (including an offering pursuant to a Registration Statement) in which Common Stock is sold
to an underwriter on a firm commitment basis for reoffering to the public or an offering that is a “bought deal” with
one or more investment banks.

 

“Warrant”
means a warrant to purchase Series B Preferred Stock issued in connection with the sale of the Series B Preferred Stock pursuant
to the Purchase Agreement or, if a Merger has occurred, any securities issued upon the exchange thereof in connection with such
Merger.

 

Section
1.02     Registrable Securities. Any
Registrable Security will cease to be a Registrable Security (a) when a Registration Statement covering such Registrable Security
has been declared effective by the Commission and such Registrable Security has been sold or disposed of pursuant to such effective
Registration Statement, (b) when such Registrable Security is held by the Company or one of its subsidiaries, (c) when such Registrable
Security has been sold in a private transaction in which the transferor’s rights under this Agreement are not assigned to
the transferee of such securities. 

 

ARTICLE
II

REGISTRATION RIGHTS

 

Section
2.01     (a)          Timing
of Registration. As soon as practicable following the Merger, but in any event within sixty (60) days thereof, the Company
shall use its commercially reasonable efforts to cause a Registration Statement under the Securities Act to be prepared and filed
by the post-Merger public company with respect to all of the Registrable Securities. The Company shall use its commercially reasonable
efforts to cause such Registration Statement to become effective no later than sixty (60) days after the date of the initial filing
of the Registration Statement. If a prospectus supplement will be used in connection with the marketing of an Underwritten Offering
from the Registration Statement and the Managing Underwriter at any time shall notify the Company in writing that, in the sole
judgment of such Managing Underwriter, inclusion of detailed information to be used in such prospectus supplement is of material
importance to the success of the Underwritten Offering of such Registrable Securities, the Company shall use its commercially reasonable
efforts to include such information in the prospectus. The Company will cause the Registration Statement filed pursuant to this
Section 2.01 to be continuously effective under the Securities Act, until there are no longer any Registrable Securities outstanding,
but in any event no longer than thirty-six (36) months after effectiveness thereof or such shorter period as is agreed to by a
Majority-in-Interest of the Holders; provided, however, that if the provisions of Rule 144(i)(1) apply to the Company,
the requirement to maintain an effective Registration Statement shall be extended to sixty (60) months after effectiveness. The
Registration Statement when declared effective (including the documents incorporated therein by reference) will comply as to form
with all applicable requirements of the Securities Act and the Securities Exchange Act, and will not contain an untrue statement
of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein not
misleading.

 

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(b)          Delay
Rights. Notwithstanding anything to the contrary contained herein, the Company may, upon written notice to any Selling Holder
whose Registrable Securities are included in the Registration Statement, suspend such Selling Holder’s use of any prospectus
which is a part of the Registration Statement (in which event the Selling Holder shall discontinue sales of the Registrable Securities
pursuant to the Registration Statement) if (i) the Company is pursuing an acquisition, merger, reorganization, disposition or other
similar transaction and the Company’s independent directors determine in good faith that the Company’s ability to pursue
or consummate such a transaction would be materially and adversely affected by any required disclosure of such transaction in the
Registration Statement or (ii) the Company has experienced some other material non-public event the disclosure of which at such
time, in the good faith judgment of the Company’s independent directors, would materially adversely affect the Company; provided,
however, in no event shall the Registration Statement be suspended for a period exceeding an aggregate of ninety
(90) days in any three hundred sixty five (365)-day period. Upon disclosure of such information or the termination of the condition
described above, the Company shall provide prompt notice to the Selling Holders whose Registrable Securities are included in the
Registration Statement, and shall promptly terminate any suspension of sales it has put into effect and shall take such other actions
to permit registered sales of Registrable Securities as contemplated in this Agreement.

 

Section
2.02         Piggyback Rights. 

 

(a)          Participation.
If at any time after the final closing date of the Merger, the Company proposes to file a registration statement for the sale of
Common Stock in an Underwritten Offering for its own account and/or another Person, then as soon as practicable but not less than
ten Business Days prior to the filing of such registration statement, the Company shall give notice of such proposed Underwritten
Offering to the Holders and such notice shall offer the Holders the opportunity to include in such Underwritten Offering such number
of Registrable Securities (the “Included Registrable Securities”) as each such Holder may request in writing
(but only to the extent that such Registrable Securities are not then subject to lock-up provisions under any lock-up or similar
agreement); provided, however, that if the Company has been advised by the Managing Underwriter that
the inclusion of Registrable Securities for sale for the benefit of the Holders will have an adverse effect on the price, timing
or distribution of the Common Stock offered by the Company under such registration statement, then the amount of Registrable Securities
to be offered for the accounts of Holders shall be determined based on the provisions of Section 2.02(b). The notice required
to be provided in this Section 2.02(a) to Holders shall be provided on a Business Day pursuant to Section 3.02 hereof and receipt
of such notice shall be deemed to be received by Holders on the next Business Day. Holder shall then have three (3) Business Days
after such deemed receipt of the notice to request inclusion of Registrable Securities in the Underwritten Offering. If no request
for inclusion from a Holder is received within the specified time, then such Holder shall have no further right to participate
in such Underwritten Offering. If a Holder decides not include some or all of its Registrable Securities in any registration statement
filed by the Company as described in this Section 2.02(a), such Holder shall nevertheless continue to have the right to include
any Registrable Securities in any subsequent registration statement or registration statements as may be filed by the Company with
respect to the offering by the Company of its securities, all upon the terms and conditions set forth herein. If, at any time after
giving written notice of its intention to undertake an Underwritten Offering and prior to the closing of such Underwritten Offering,
the Company shall determine for any reason not to undertake or to delay such Underwritten Offering, the Company may, at its election,
give written notice of such determination to the Selling Holders and, (x) in the case of a determination not to undertake such
Underwritten Offering, shall be relieved of its obligation to sell any Included Registrable Securities in connection with such
terminated Underwritten Offering, and (y) in the case of a determination to delay such Underwritten Offering, shall be permitted
to delay offering any Included Registrable Securities for the same period as the delay in the Underwritten Offering. Any Selling
Holder shall have the right to withdraw such Selling Holder’s request for inclusion of such Selling Holder’s Registrable
Securities in such offering by giving written notice to the Company of such withdrawal up to and including the date immediately
preceding the date on which the underwriters price such offering.

 

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(b)          Priority
of Piggyback Rights. If the Managing Underwriter or Underwriters of any proposed Underwritten Offering of Company Common Stock
included in an Underwritten Offering involving Included Registrable Securities advises the Company that the total amount of Company
Common Stock that the Selling Holders and any other Persons intend to include in such offering exceeds the number that can be sold
in such offering without being likely to have an adverse effect on the price, timing or distribution of the Company Common Stock
offered or the market for the Company Common Stock, then the Company Common Stock to be included in such Underwritten Offering
shall include the number of Registrable Securities that such Managing Underwriter or Underwriters advises the Company can be sold
without having such adverse effect, with such number to be allocated (i) first, to the Company and (ii) second, pro rata among
the Selling Holders who have requested participation in such Underwritten Offering and any other Person holding Company securities
who may also be including any such securities for sale in such Underwritten Offering based, for each Selling Holder or other Person,
on the fraction derived by dividing (x) the number of shares of Company Common Stock proposed to be sold by such Selling Holder
or other Person in such Underwritten Offering by (y) the aggregate number of shares of Company Common Stock proposed to be sold
by all Selling Holders and other Persons in such Underwritten Offering. For clarity, the Managing Underwriter or Underwriters shall
have the ability to fully cut back any Registrable Securities in connection with the Underwritten Offering. If any Selling Holder
or other Person does not agree to the terms of any such underwriting, such Selling Holder or other Person, as the case may be,
may be excluded from the Underwritten Offering by written notice from the Company or the Managing Underwriter. Any Registrable
Securities or other Company securities excluded or withdrawn from such underwriting shall be withdrawn from such registration.
To facilitate the allocation of shares in accordance with the above provisions, the Company or the Managing Underwriter or Underwriters
may round the number of shares allocated to any Holder to the nearest one hundred (100) shares. If shares are so withdrawn from
the registration and if the number of shares of Registrable Securities to be included in such registration was previously reduced
as a result of marketing factors, the Company shall then offer to all persons who have retained the right to include securities
in the registration the right to include additional securities in the registration in an aggregate amount equal to the number of
shares so withdrawn, with such shares to be allocated among the Selling Holders or other Person or Persons requesting additional
inclusion in accordance with the formula contained in this Section 2.02(b). The Company shall have the right to terminate or withdraw
any registration initiated by it under this Section 2.02 at any time whether or not any Holder has elected to include securities
in such registration.

 

Section
2.03         Underwritten Offering.

 

(a)          S-1
Registration. If a Selling Holder elects to dispose of Registrable Securities under the Registration Statement pursuant to
an Underwritten Offering and the Company’s board of directors determines in good faith that such Underwritten Offering will
result in gross proceeds of greater than five million dollars ($5,000,000), the Company shall, at the request of such Selling Holder,
enter into an underwriting agreement in customary form with the Managing Underwriter or Underwriters, which shall include, among
other provisions, indemnities to the effect and to the extent provided in Section 2.06, and shall take all such other reasonable
actions as are requested by the Managing Underwriter to expedite or facilitate the disposition of the Registrable Securities.

 

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(b)          General
Procedures. In connection with any Underwritten Offering pursuant to this Agreement, the Company shall, at its sole discretion,
be entitled to select the Managing Underwriter or Underwriters. In connection with an Underwritten Offering under Section 2.01
or Section 2.03 hereof, each Selling Holder and the Company shall be obligated to enter into an underwriting agreement that contains
such representations, covenants, indemnities and other rights and obligations as are customary in underwriting agreements for firm
commitment offerings of securities. No Selling Holder may participate in such Underwritten Offering unless such Selling Holder
agrees to sell its Registrable Securities on the basis provided in such underwriting agreement and completes and executes all questionnaires,
powers of attorney, indemnities and other documents required under the terms of such underwriting agreement. No Selling Holder
shall be required to make any representations or warranties to or agreements with the Company or the underwriters other than representations,
warranties or agreements regarding such Selling Holder and its ownership of the securities being registered on its behalf and its
intended method of distribution and any other representation required by law. If any Selling Holder disapproves of the terms of
an underwriting, such Selling Holder may elect to withdraw therefrom by notice to the Company and the Managing Underwriter; provided,
that such withdrawal must be made prior to the time in the last sentence of Section 2.02(a) hereof to be effective.

 

Section
2.04         Sale Procedures. In connection
with its obligations contained in Section 2.01 and Section 2.03, the Company will:

 

(a)          prepare
and file with the Commission such amendments and supplements to the Registration Statement and the prospectus used in connection
therewith as may be necessary to keep the Registration Statement effective and as may be necessary to comply with the provisions
of the Securities Act with respect to the disposition of all securities covered by the Registration Statement;

 

(b)          furnish
to each Selling Holder (i) as far in advance as reasonably practicable before filing the Registration Statement or any other registration
statement contemplated by this Agreement or any supplement or amendment thereto, upon request, copies of reasonably complete drafts
of all such documents proposed to be filed, and provide each such Selling Holder five (5) Business Days to object in writing to
any information pertaining to such Selling Holder and its plan of distribution that is contained therein and make the corrections
reasonably requested by such Selling Holder with respect to such information prior to filing the Registration Statement or such
other registration statement or supplement or amendment thereto, and (ii) such number of copies of the Registration Statement or
such other registration statement and the prospectus included therein and any supplements and amendments thereto as such Persons
may reasonably request in order to facilitate the public sale or other disposition of the Registrable Securities covered by such
Registration Statement or other registration statement;

 

(c)          if
applicable, use its commercially reasonable efforts to register or qualify the Registrable Securities covered by the Registration
Statement or any other registration statement contemplated by this Agreement under the securities or blue sky laws of such jurisdictions
as the Selling Holders or, in the case of an Underwritten Offering, the Managing Underwriter, shall reasonably request, provided,
however, that the Company will not be required to qualify generally to transact business in any jurisdiction
where it is not then required to so qualify or to take any action which would subject it to general service of process in any such
jurisdiction where it is not then so subject;

 

(d)          promptly
notify each Selling Holder, at any time when a prospectus relating thereto is required to be delivered under the Securities Act,
of (i) the filing of the Registration Statement or any other registration statement contemplated by this Agreement or any prospectus
or prospectus supplement to be used in connection therewith, or any amendment or supplement thereto, and, with respect to such
Registration Statement or any other registration statement or any post-effective amendment thereto, when the same has become effective,
and (ii) any written comments from the Commission with respect to any filing referred to in clause (i) and any written request
by the Commission for amendments or supplements to the Registration Statement or any other registration statement or any prospectus
or prospectus supplement thereto;

 

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(e)          immediately
notify each Selling Holder, at any time when a prospectus relating thereto is required to be delivered under the Securities Act,
of (i) the happening of any event as a result of which the prospectus or prospectus supplement contained in the Registration Statement
or any other registration statement contemplated by this Agreement, as then in effect, includes an untrue statement of a material
fact or omits to state any material fact required to be stated therein or necessary to make the statements therein not misleading
in the light of the circumstances then existing, (ii) the issuance or threat of issuance by the Commission of any stop order suspending
the effectiveness of the Registration Statement or any other registration statement contemplated by this Agreement, or the initiation
of any proceedings for that purpose, or (iii) the receipt by the Company of any notification with respect to the suspension of
the qualification of any Registrable Securities for sale under the applicable securities or blue sky laws of any jurisdiction.
Following the provision of such notice, the Company agrees to as promptly as practicable amend or supplement the prospectus or
prospectus supplement or take other appropriate action so that the prospectus or prospectus supplement does not include an untrue
statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements
therein not misleading in the light of the circumstances then existing and to take such other action as is necessary to remove
a stop order, suspension, threat thereof or proceedings related thereto;

 

(f)          otherwise
use its commercially reasonable efforts to comply with all applicable rules and regulations of the Commission;

 

(g)          make
available to the appropriate representatives of the Managing Underwriter and Selling Holders access to such information and the
Company personnel as is reasonable and customary to enable such parties to establish a due diligence defense under the Securities
Act; provided, however,
that the Company need not disclose any information to any such representative unless and until such representative has
entered into a confidentiality agreement with the Company;

 

(h)          cause
all such Registrable Securities registered pursuant to this Agreement to be listed on each securities exchange or nationally recognized
quotation system on which similar securities issued by the Company are then listed;

 

(i)          use
its commercially reasonable efforts to cause the Registrable Securities to be registered with or approved by such other governmental
agencies or authorities as may be necessary by virtue of the business and operations of the Company to enable the Selling Holders
to consummate the disposition of such Registrable Securities;

 

(j)          provide
a transfer agent and registrar for all Registrable Securities covered by such registration statement not later than the effective
date of such registration statement; and

 

(k)          enter
into customary agreements and take such other actions as are reasonably requested by the Selling Holders or the underwriters, if
any, in order to expedite or facilitate the disposition of such Registrable Securities.

 

Each Selling Holder,
upon receipt of notice from the Company of the happening of any event of the kind described in subsection (e) of this Section 2.04,
shall forthwith discontinue disposition of the Registrable Securities until such Selling Holder’s receipt of the copies of
the supplemented or amended prospectus contemplated by subsection (e) of this Section 2.04 or until it is advised in writing by
the Company that the use of the prospectus may be resumed, and has received copies of any additional or supplemental filings incorporated
by reference in the prospectus, and, if so directed by the Company, such Selling Holder will, or will request the managing underwriter
or underwriters, if any, to deliver to the Company (at the Company’s expense) all copies in their possession or control,
other than permanent file copies then in such Selling Holder’s possession, of the prospectus covering such Registrable Securities
current at the time of receipt of such notice.

 

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Section
2.05         Expenses.

 

(a)          Certain
Definitions. “Registration Expenses” means all expenses incident to the Company’s performance under
or compliance with this Agreement to effect the registration of Registrable Securities under the Registration Statement pursuant
to Section 2.01, an Underwritten Offering pursuant to Section 2.02 or Section 2.03, and the disposition of such securities, including,
without limitation, all registration, filing, securities exchange listing and annual maintenance fees, all registration, filing,
qualification and other fees and expenses of complying with securities or blue sky laws, fees of the Financial Industry Regulatory
Authority, transfer taxes and fees of transfer agents and registrars, all word processing, duplicating and printing expenses, the
fees and disbursements of counsel and independent public accountants for the Company, including the expenses of any special audits
or “cold comfort” letters required by or incident to such performance and compliance. Except as otherwise provided
in Section 2.05 hereof, the Company shall not be responsible for legal fees incurred by Holders in connection with the exercise
of such Holders’ rights hereunder; provided, however that the Company shall pay the legal fees of one counsel
to the Investors in an amount not to exceed ten thousand dollars ($10,000). In addition, the Company shall not be responsible for
any “Selling Expenses,” which means all underwriting fees, discounts and selling commissions allocable
to the sale of the Registrable Securities under the Registration Statement.

 

(b)          Expenses.
The Company will pay all reasonable Registration Expenses as determined in good faith, including, in the case of an Underwritten
Offering, whether or not any sale is made pursuant to such Underwritten Offering. Each Selling Holder shall pay all Selling Expenses
in connection with any sale of its Registrable Securities hereunder.

 

Section
2.06         Indemnification.

 

(a)          By
the Company. In the event of a registration of any Registrable Securities under the Securities Act pursuant to this Agreement,
the Company will indemnify and hold harmless each Selling Holder thereunder, its directors and officers, and each underwriter,
pursuant to the applicable underwriting agreement with such underwriter, of Registrable Securities thereunder and each Person,
if any, who controls such Selling Holder or underwriter within the meaning of the Securities Act and the Exchange Act, against
any losses, claims, damages, expenses or liabilities (including reasonable attorneys’ fees and expenses) (collectively, “Losses”),
joint or several, to which such Selling Holder or underwriter or controlling Person may become subject under the Securities Act,
the Exchange Act or otherwise, insofar as such Losses (or actions or proceedings, whether commenced or threatened, in respect thereof)
arise out of or are based upon any untrue statement or alleged untrue statement of any material fact contained in the Registration
Statement or any other registration statement contemplated by this Agreement, any preliminary prospectus or final prospectus contained
therein, or any amendment or supplement thereof, or arise out of or are based upon the omission or alleged omission to state therein
a material fact required to be stated therein or necessary to make the statements therein (in the case of a prospectus, in light
of the circumstances under which they were made) not misleading, and will reimburse each such Selling Holder, its directors and
officers, each such underwriter and each such controlling Person for any legal or other expenses reasonably incurred by them in
connection with investigating or defending any such Loss or actions or proceedings; provided, however, that the Company
will not be liable in any such case if and to the extent that any such Loss arises out of or is based upon an untrue statement
or alleged untrue statement or omission or alleged omission so made in conformity with information furnished by such Selling Holder,
such underwriter or such controlling Person in writing specifically for use in the Registration Statement or such other registration
statement, or prospectus supplement, as applicable. Such indemnity shall remain in full force and effect regardless of any investigation
made by or on behalf of such Selling Holder or any such director, officer or controlling Person, and shall survive the transfer
of such securities by such Selling Holder.

 

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(b)          By
Each Selling Holder. Each Selling Holder agrees severally and not jointly to indemnify and hold harmless the Company, its directors
and officers, and each Person, if any, who controls the Company within the meaning of the Securities Act or of the Exchange Act
to the same extent as the foregoing indemnity from the Company to the Selling Holders, but only with respect to information regarding
such Selling Holder furnished in writing by or on behalf of such Selling Holder expressly for inclusion in the Registration Statement
or prospectus supplement relating to the Registrable Securities, or any amendment or supplement thereto; provided, however,
that the liability of each Selling Holder shall not be greater in amount than the dollar amount of the proceeds (net
of any Selling Expenses) received by such Selling Holder from the sale of the Registrable Securities giving rise to such indemnification.

 

(c)          Notice.
Promptly after receipt by an indemnified party hereunder of notice of the commencement of any action, such indemnified party shall,
if a claim in respect thereof is to be made against the indemnifying party hereunder, notify the indemnifying party in writing
thereof, but the omission so to notify the indemnifying party shall not relieve it from any liability which it may have to any
indemnified party other than under this Section 2.06. In any action brought against any indemnified party, it shall notify the
indemnifying party of the commencement thereof. The indemnifying party shall be entitled to participate in and, to the extent it
shall wish, to assume and undertake the defense thereof with counsel reasonably satisfactory to such indemnified party and, after
notice from the indemnifying party to such indemnified party of its election so to assume and undertake the defense thereof, the
indemnifying party shall not be liable to such indemnified party under this Section 2.06 for any legal expenses subsequently incurred
by such indemnified party in connection with the defense thereof other than reasonable costs of investigation and of liaison with
counsel so selected; provided, however, that,
(i) if the indemnifying party has failed to assume the defense and employ counsel or (ii) if the defendants in any such action
include both the indemnified party and the indemnifying party and counsel to the indemnified party shall have concluded that there
may be reasonable defenses available to the indemnified party that are different from or additional to those available to the indemnifying
party, or if the interests of the indemnified party reasonably may be deemed to conflict with the interests of the indemnifying
party, then the indemnified party shall have the right to select a separate counsel and to assume such legal defense and otherwise
to participate in the defense of such action, with the reasonable expenses and fees of such separate counsel and other reasonable
expenses related to such participation to be reimbursed by the indemnifying party as incurred. Notwithstanding any other provision
of this Agreement, no indemnified party shall settle any action brought against it with respect to which it is entitled to
indemnification hereunder without the consent of the indemnifying party, unless the settlement thereof imposes no liability
or obligation on, and includes a complete and unconditional release from all liability of, the indemnifying party.

 

(d)          Contribution.
If the indemnification provided for in this Section 2.06 is held by a court or government agency of competent jurisdiction
to be unavailable to any indemnified patty or is insufficient to hold them harmless in respect of any Losses, then each such indemnifying
party, in lieu of indemnifying such indemnified party, shall contribute to the amount paid or payable by such indemnified party
as a result of such Loss in such proportion as is appropriate to reflect the relative fault of the indemnifying party on the one
hand and of such indemnified party on the other in connection with the statements or omissions which resulted in such Losses, as
well as any other relevant equitable considerations; provided, however,
that in no event shall such Selling Holder be required to contribute an aggregate amount in excess of the dollar amount
of proceeds (net of Selling Expenses) received by such Selling Holder from the sale of Registrable Securities giving rise to such
indemnification. The relative fault of the indemnifying party on the one hand and the indemnified party on the other shall be determined
by reference to, among other things, whether the untrue or alleged untrue statement of a material fact or the omission or alleged
omission to state a material fact has been made by, or relates to, information supplied by such party, and the parties’ relative
intent, knowledge, access to information and opportunity to correct or prevent such statement or omission. The parties hereto agree
that it would not be just and equitable if contributions pursuant to this paragraph were to be determined by pro rata allocation
or by any other method of allocation which does not take account of the equitable considerations referred to herein. The amount
paid by an indemnified party as a result of the Losses referred to in the first sentence of this paragraph shall be deemed to include
any legal and other expenses reasonably incurred by such indemnified party in connection with investigating or defending any Loss
which is the subject of this paragraph. No person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of
the Securities Act) shall be entitled to contribution from any Person who is not guilty of such fraudulent misrepresentation.

 

    	9

    	 

    

 

(e)          Other
Indemnification. The provisions of this Section 2.06 shall be in addition to any other rights to indemnification or contribution
which an indemnified party may have pursuant to law, equity, contract or otherwise.

 

Section
2.07         Rule 144 Reporting. With
a view to making available the benefits of certain rules and regulations of the Commission that may permit the sale of the Registrable
Securities to the public without registration, the Company agrees to use its commercially reasonable efforts to:

 

(a)          Make
and keep public information regarding the Company available, as those terms are understood and defined in Rule 144 of the Securities
Act, at all times from and after the date hereof;

 

(b)          File
with the Commission in a timely manner all reports and other documents required of the Company under the Securities Act and the
Exchange Act at all times from and after the date hereof, and

 

(c)          So
long as a Holder owns any Registrable Securities, furnish to such Holder forthwith upon request a copy of the most recent annual
or quarterly report of the Company, and such other reports and documents so filed as such Holder may reasonably request in availing
itself of any rule or regulation of the Commission allowing such Holder to sell any such securities without registration; provided
that the Company’s obligations pursuant to this Section 2.07(c) shall be deemed satisfied with respect to any document that
is publicly available, free of charge, on the Commission’s EDGAR website.

 

Section
2.08         Transfer or Assignment of Registration
Rights. The rights to cause the Company to register Registrable Securities granted to the Investors by the Company under this
Article II may be transferred or assigned by any Investor to one or more transferee(s) or assignee(s) of at least one thousand
(1,000) shares of Registrable Securities or to an Affiliate of such Investor. The Company shall be given written notice prior to
any said transfer or assignment, stating the name and address of each such transferee and identifying the securities with respect
to which such registration rights are being transferred or assigned. Each such transferee shall assume in writing responsibility
for its portion of the obligations of such Investor under this Agreement be executing a counterpart signature page hereto pursuant
to which such transferee agrees to be bound by all terms and conditions contained in this Agreement.

 

Section
2.09         Limitation on Subsequent Registration
Rights. From and after the date hereof, the Company shall not (except in connection with the issuance of securities as consideration
to the sellers of any Company or business acquired by the Company), without the prior written consent of the a Majority-in-Interest
of the Investors, enter into any agreement with any current or future holder of any securities of the Company that alters, restricts,
or otherwise limits the registration rights granted hereunder or that would allow such current or future holder to require the
Company to include securities in any registration statement filed by the Company on a basis that is superior (as opposed to pari
passu) in any way to the registration rights granted to the Investors hereunder. 

 

    	10

    	 

    

 

ARTICLE
III

MISCELLANEOUS

 

Section
3.01         Termination. This Agreement
shall terminate upon the earlier of: (a) with respect to a particular Holder, when all Registrable Securities held by such
Holder may be sold under Rule 144, (b) a Change of Control, but only as long as all Registrable Securities (or any securities for
which such Registrable Securities are exchanged in such transaction) may be sold by the Holder or Holders thereof without restriction
pursuant to Rule 144 or Rule 145 immediately following the closing of such Change of Control, or (c) five (5) years following the
date first set forth above.

 

Section
3.02         Communications. All notices
and other communications provided for or permitted hereunder shall be made in writing by facsimile, courier service or personal
delivery:

 

(a)          if
to an Investors, to the address set forth under such Investor’s signature block in accordance with the provisions of this
Section 3.02,

 

(b)          if
to a transferee of the Investor, to such transferee at the address provided pursuant to Section 2.08 above, and

 

(c)          if
to the Company, to the address set forth under the Company’s signature block in accordance with the provisions of this Section
3.02.

 

All such notices and
communications shall be deemed to have been received at the time delivered by hand, if personally delivered; when receipt acknowledged,
if sent via facsimile or sent via Internet electronic mail; and when actually received, if sent by any other means.

 

Section
3.03         Effectiveness. This Agreement
shall be effective automatically and without further action on the part of any party hereto on the final closing date of the Financing.

 

Section
3.04         Amendments and Waivers. This
Agreement may be amended, and any provision of it may be waived, only by a written agreement executed by the Company and a Majority-in-Interest
of the Investors; provided, however, that no such consent shall be required to amend this Agreement to add as parties
Investors purchasing Company securities in the Financing.

 

Section
3.05         Successor and Assigns. This
Agreement shall inure to the benefit of and be binding upon the successors and permitted assigns of each of the parties, including
subsequent Holders of Registrable Securities to the extent permitted herein.

 

Section
3.06         Assignment of Rights. All
or any portion of the rights and obligations of the Investors under this Agreement may be transferred or assigned by the Investors
in accordance with Section 2.08 hereof.

 

    	11

    	 

    

 

Section
3.07         Independent Nature of Investors’
Obligations and Rights. The obligations of each Investor under this Agreement are several and not joint with the obligations
of any other Investor, and no Investor shall be responsible in any way for the performance of the obligations of any other Investor
under this Agreement or the Securities Purchase Agreement. Nothing contained herein, and no action taken by any Investor pursuant
hereto shall be deemed to constitute the Investors as a partnership, an association, a joint venture or any other kind of entity,
or create a presumption that the Investors are in any way acting in concert or a group with respect to such obligations or the
transactions contemplated by this Agreement or the Securities Purchase Agreement. Each Investor acknowledges that no other Investor
has acted as agent for such Investor in connection with enforcing its rights and obligations under this Agreement. Each Investor
will be entitled to independently protect an enforce its rights, including without limitation the rights arising out of this Agreement
and it shall not be necessary for any other Investor to be joined as an additional party in any proceeding for such purpose. The
Company acknowledges that each of the Investors has been provided with the same Agreement for the purpose of closing a transaction
with multiple Investors and not because it was required or requested to do so by any Investor.

 

Section
3.08         Aggregation of Purchased Common
Stock. All Company Common Stock held or acquired by Persons who are Affiliates of one another shall be aggregated together
for the purpose of determining the availability of any rights under this Agreement.

 

Section
3.09         Recapitalization, Exchanges,
etc. Affecting the Common Stock. The provisions of this Agreement shall apply to the full extent set forth herein with respect
to any and all securities of the Company or any successor, assign or acquirer of the Company (whether by merger, consolidation,
sale of assets or otherwise) which may be issued in respect of, in exchange for or in substitution of, the Registrable Securities,
and shall be appropriately adjusted for combinations, recapitalizations and the like occurring after the date of this Agreement.

 

Section
3.10         Specific Performance. Damages
in the event of breach of this Agreement by a party hereto may be difficult, if not impossible, to ascertain, and it is therefore
agreed that each such Person, in addition to and without limiting any other remedy or right it may have, will have the right to
an injunction or other equitable relief in any court of competent jurisdiction, enjoining any such breach, and enforcing specifically
the terms and provisions hereof, and each of the parties hereto hereby waives any and all defenses it may have on the ground of
lack of jurisdiction or competence of the court to grant such an injunction or other equitable relief. The existence of this right
will not preclude any such Person from pursuing any other rights and remedies at law or in equity which such Person may have.

 

Section
3.11         Counterparts; Facsimile Signatures.
This Agreement may be executed in any number of counterparts and by different parties hereto in separate counterparts, each of
which counterparts, when so executed and delivered, shall be deemed to be an original and all of which counterparts, taken together,
shall constitute but one and the same Agreement. Facsimile or other electronically transmitted signatures, including by email attachment,
shall be deemed originals for all purposes of this Agreement.

 

Section
3.12         Headings. The headings in
this Agreement are for convenience of reference only and shall not limit or otherwise affect the meaning hereof.

 

Section
3.13         Governing Law. The laws of
the State of California shall govern this Agreement without regard to principles of conflict of laws.

 

Section
3.14         Severability of Provisions.
Any provision of this Agreement which is prohibited or unenforceable in any jurisdiction shall, as to such jurisdiction, be ineffective
to the extent of such prohibition or unenforceability without invalidating the remaining provisions hereof or affecting or impairing
the validity or enforceability of such provision in any other jurisdiction.

 

    	12

    	 

    

 

Section
3.15         Entire Agreement. This Agreement
is intended by the parties as a final expression of their agreement and intended to be a complete and exclusive statement of the
agreement and understanding of the parties hereto in respect of the subject matter contained herein. There are no restrictions,
promises, warranties or undertakings, other than those set forth or referred to herein with respect to the rights granted by the
Company set forth herein. This Agreement supersedes all prior agreements and understandings between the parties with respect to
such subject matter.

 

Section
3.16         No Presumption. If any claim
is made by a party relating to any conflict, omission, or ambiguity in this Agreement, no presumption or burden of proof or persuasion
shall be implied by virtue of the fact that this Agreement was prepared by or at the request of a particular party or its counsel.

 

(SIGNATURE PAGES FOLLOW)

 

    	13

    	 

    

 

IN WITNESS WHEREOF,
the undersigned have executed, or have caused to be executed, this Registration Rights Agreement on the date first written above.

 

	 	CDX, INC.
	 	 	 	 
	 	By:	                               	 
	 	Name:
	 	Title:
	 	 
	 	with a copy to:
	 	 
	 	Wilson Sonsini Goodrich & Rosati, P.C.
	 	650 Page Mill Road
	 	Palo Alto, CA 94304
	 	Facsimile:  (650) 493-6811
	 	Attention:  Philip H. Oettinger
	 	 
	 	INVESTOR
	 	 	 	 
	 	By:	 	 
	 	Name:
	 	Title:

 

    	14

    	 

    

 

Schedule I

 

Schedule of Investors

 

	CDx Investor Name, Address

and Fax Number
	 
	 
	 
	 
	 
	 

 

    	15Exhibit 10.7

 

Warrant No. 2014-[___]

 

CDx, Inc.

(a Delaware Corporation)

 

Warrant for the Purchase of [________]
Shares of Series B Preferred Stock

 

This Warrant Will Be Void After 5:00
P.M. Pacific Time On [________ ___], 2019

 

These securities have not been registered
with the U.S. Securities and Exchange Commission (the “SEC”) under the Securities Act of 1933, as amended (the
“Securities Act”), and are being offered in reliance on exemptions from registration provided in Section 4(2)
of the Securities Act and Rule 506 of Regulation D promulgated thereunder and preemption from the registration or qualification
requirements (other than notice filing and fee provisions) of applicable state laws under the National Securities Markets Improvement
Act of 1996.

 

THIS WARRANT (this
“Warrant”), effective as of [________ ___], 2014 (the “Effective Date”), certifies
that, for value received, [________] or registered assigns (the “Holder” or “Holders”),
is entitled, at any time on or before 5:00 p.m. Pacific Time on [five year anniversary of Initial Closing], 2019, to subscribe
for, purchase, and receive [________] ([________]) shares (the “Shares”) of fully paid and non-assessable
Series B Preferred Stock, par value $0.001 per share (the “Series B Preferred Stock”) of CDx, Inc., a
Delaware corporation (the “Company”). This Warrant is exercisable at a price of One Dollar Ten Cents
($1.10) per share for an aggregate exercise price of [________] $[________] (the “Exercise Price”). The
number of Shares to be received upon exercise of this Warrant and the Exercise Price may be adjusted on the occurrence of certain
events as described herein. If the rights represented hereby are not exercised by 5:00 p.m. Pacific Time on [five year anniversary
of Initial Closing], 2019, this Warrant shall automatically become void and of no further force or effect, and all rights represented
hereby shall cease and expire.

 

Subject to the terms
set forth herein, this Warrant may be assigned by the Holder in whole or in part by execution of the form of assignment attached
hereto or may be exercised by the Holder in whole or in part by execution of the form of exercise attached hereto and payment of
the Exercise Price in the manner described herein, all subject to the terms hereof.

 

1.          Exercise
of Warrants. The Holder shall have the rights of a stockholder only with respect to Shares fully paid for by the Holder under
this Warrant. Upon the exercise of all or any portion of this Warrant in the manner provided herein, the Holder exercising the
same shall be deemed to have become a Holder of record of the Shares as to which this Warrant is exercised for all purposes, and
certificates for the securities so purchased shall be delivered to the Holder within a reasonable time. If this Warrant shall be
exercised in respect to only a part of the Shares covered hereby, the Holder shall be entitled to receive a similar Warrant of
like tenor and date covering the number of Shares with respect to which this Warrant shall not have been exercised.

 

2.          Assignment
of Warrants. In the event this Warrant is assigned in the manner provided herein, the Company, upon request and upon surrender
of this Warrant by the Holder at the principal office of the Company accompanied by payment of all transfer taxes, if any, payable
in connection therewith, shall transfer this Warrant on the books of the Company. If the assignment is in whole, the Company shall
execute and deliver a new Warrant or Warrants of like tenor to this Warrant to the appropriate assignee expressly evidencing the
right to purchase the aggregate number of Shares purchasable hereunder; and if the assignment is in part, the Company shall execute
and deliver to the appropriate assignee a new Warrant or Warrants of like tenor expressly evidencing the right to purchase the
portion of the aggregate number of Shares as shall be contemplated by any such agreement, and shall concurrently execute and deliver
to the Holder a new Warrant of like tenor to this Warrant evidencing the right to purchase the remaining portion of the Shares
purchasable hereunder that have not been transferred to the assignee.

 

    	 

    	 

    

 

3.           Fully
Paid Shares. The Company covenants and agrees that the Shares that may be issued on the exercise of this Warrant will, on issuance
pursuant to the terms of this Warrant, be fully paid and non-assessable, free from all taxes, liens, and charges with respect to
the issue thereof, and not issued in violation of the preemptive or similar right of any other person. The Company further covenants
and agrees that during the period within which the rights represented by this Warrant may be exercised, the Company will have authorized
and reserved a sufficient number of Shares of Series B Preferred Stock to provide for the exercise of the rights represented by
this Warrant.

 

4.           Adjustments.

 

(a)          Merger
or Reorganization. If at any time there shall be any reorganization, recapitalization, merger or consolidation (a “Reorganization”)
involving the Company in which shares of the Company’s stock are converted into or exchanged for securities, cash or other
property, then, as a part of such Reorganization, lawful provision shall be made so that the Holder shall thereafter be entitled
to receive upon exercise of this Warrant, the kind and amount of securities, cash or other property of the successor corporation
resulting from such Reorganization, equivalent in value to that which a holder of the Shares deliverable upon exercise of this
Warrant would have been entitled in such Reorganization if the right to purchase the Shares hereunder had been exercised immediately
prior to such Reorganization. In any such case, appropriate adjustment (as determined in good faith by the Board of Directors of
the successor corporation) shall be made in the application of the provisions of this Warrant with respect to the rights and interests
of the Holder after such Reorganization to the end that the provisions of this Warrant shall be applicable after the event, as
near as reasonably may be, in relation to any shares or other securities deliverable after that event upon the exercise of this
Warrant.

 

(b)          Reclassification
of Shares. If the securities issuable upon exercise of this Warrant are changed into the same or a different number of securities
of any other class or classes by reclassification, capital reorganization, conversion of all outstanding shares of the relevant
class or series or otherwise (other than as otherwise provided for herein) (a “Reclassification”), then,
in any such event, in lieu of the number of Shares which the Holder would otherwise have been entitled to receive, the Holder shall
have the right thereafter to exercise this Warrant for a number of shares of such other class or classes of stock that a holder
of the number of securities deliverable upon exercise of this Warrant immediately before that change would have been entitled to
receive in such Reclassification, all subject to further adjustment as provided herein with respect to such other shares.

 

(c)          Subdivisions
and Combinations. In the event that the outstanding shares of Series B Preferred Stock are subdivided (by stock split, by payment
of a stock dividend or otherwise) into a greater number of shares of such securities, the number of Shares issuable upon exercise
of the rights under this Warrant immediately prior to such subdivision shall, concurrently with the effectiveness of such subdivision,
be proportionately increased, and the Exercise Price shall be proportionately decreased, and in the event that the outstanding
shares of Series B Preferred Stock are combined (by reclassification or otherwise) into a lesser number of shares of such securities,
the number of Shares issuable upon exercise of the rights under this Warrant immediately prior to such combination shall, concurrently
with the effectiveness of such combination, be proportionately decreased, and the Exercise Price shall be proportionately increased.

 

(d)          Notice
of Adjustments. Upon any adjustment in accordance with this Paragraph 4, the Company shall give notice thereof to the Holder,
which notice shall state the event giving rise to the adjustment, the Exercise Price as adjusted and the number of securities or
other property purchasable upon the exercise of the rights under this Warrant, setting forth in reasonable detail the method of
calculation of each. The Company shall, upon the written request of any Holder, furnish or cause to be furnished to such Holder
a certificate setting forth (i) such adjustments, (ii) the Exercise Price at the time in effect and (iii) the number of securities
and the amount, if any, of other property that at the time would be received upon exercise of this Warrant.

 

    	 

    	 

    

 

5.                          Notice
of Certain Events. In the event of:

 

(a)          any
taking by the Company of a record of the holders of any class of securities of the Company for the purpose of determining the holders
thereof who are entitled to receive any dividends or other distribution, or any right to subscribe for, purchase, or otherwise
acquire any shares of stock of any class or any other securities or property, or to receive any other rights;

 

(b)          any
capital reorganization of the Company, any reclassification or recapitalization of the capital stock of the Company, or any transfer
of all or substantially all of the assets of the Company to any other person, or any consolidation, share exchange, or merger involving
the Company; or

 

(c)          any
voluntary or involuntary dissolution, liquidation, or winding up of the Company,

 

the Company will mail to the Holder(s)
of this Warrant, at least 20 days prior to the earliest date specified therein, a notice specifying the date on which any such
record is to be taken for the purpose of such dividend, distribution, or right; the amount and character of such dividend, distribution,
or right; or the date on which any such reorganization, reclassification, transfer, consolidation, share exchange, merger, dissolution,
liquidation, or winding up of the Company will occur and the terms and conditions of such transaction or event.

 

6.           Limitation
of Transfer. Subject to the restrictions set forth in Paragraph 8 hereof, this Warrant is transferable at the offices of the
Company. On such transfer, each Holder hereof agrees that the Company may deem and treat the registered Holder(s) of this Warrant
as the true and lawful owner(s) thereof for all purposes, and the Company shall not be affected by any notice to the contrary.

 

7.           Disposition
of Warrants or Shares. Holder, by acceptance hereof, agrees for itself and any subsequent owner(s) that, before any disposition
is made of any Warrants or shares of Series B Preferred Stock, Holder shall give written notice to the Company describing briefly
the manner of any such proposed disposition. No such disposition shall be made unless and until:

 

(a)          the
Company has received written assurances from the proposed transferee confirming a factual basis for relying on exemptions from
registration under applicable federal and state securities laws for such transfer or an opinion from counsel for the Holder(s)
of the Warrants or Shares stating that no registration under the Securities Act or applicable state statute is required with respect
to such disposition; or

 

(b)          a
registration statement under the Securities Act has been filed by the Company and declared effective by the SEC covering such proposed
disposition and the disposition has been registered or qualified, or is exempt therefrom, under the state having jurisdiction over
such disposition.

 

    	 

    	 

    

 

8.           Restricted
Securities: Registration of Securities.

 

(a)          Restricted
Securities; Rule 144. As of the original date of issuance of this Warrant, there is no public market for the Company’s
Series B Preferred Stock, and there is no assurance that a public market will ever be created, or if created, that it will be an
active, sustainable trading market. Moreover, the Holder acknowledges that this Warrant is, and that the Shares issuable on exercise
hereof will be, “restricted securities” as that term is defined in Rule 144 promulgated under the Securities Act. Rule
144 requires that securities issued by a non-reporting company in a transaction not involving a public offering must be held for
a minimum of one year from the date of full payment for the securities purchased before such securities become eligible to be publicly
sold under Rule 144, even if all other conditions required for resale under Rule 144 have been met. There is no assurance that
the conditions to satisfy Rule 144 will ever be satisfied. Accordingly, this Warrant must be taken for investment and held indefinitely.
Likewise, any Shares issued upon exercise of this Warrant must be taken for investment and held indefinitely and may not be resold
unless such resale is registered under the Securities Act and/or comparable state securities laws or unless an exemption from such
registration is available. A legend to the foregoing effect shall be placed conspicuously on the face of all certificates for Shares
issuable on exercise of this Warrant.

 

(b)          Registration
of Securities. The Company has agreed to file a resale registration statement with the SEC covering the resale of the Shares
issuable upon exercise of this Warrant. However, there is no assurance that such registration process will be completed by such
time as the Holder desires to sell the Shares, if ever. Even if Rule 144 or an effective registration statement is available, the
Holder may find it difficult to resell the Shares in the public market, and therefore, investors may have to hold their Shares
indefinitely.

 

9.           Governing
Law. This Warrant shall be construed under and be governed by the laws of the state of California.

 

10.         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.

 

11.         Non-waiver
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 Holder’s rights, powers or remedies, notwithstanding the fact that all rights
hereunder terminate on the Expiration Date. 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 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 Holder in collecting any amounts due pursuant hereto or in otherwise enforcing any of its rights, powers or remedies
hereunder.

 

12.         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.

 

13.         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 of this Warrant from the Initial Exercise Date through the Termination
Date, and shall be enforceable by any such Holder or holder of Warrant Shares.

 

14.         Amendment.
This Warrant may be modified or amended or the provisions hereof waived with the written consent of the Company and a majority
in interest of the Holders acquiring warrants pursuant to that certain Series B Preferred Stock and Warrant Purchase Agreement
dated October [___], 2014 between the Company and the investors listed on Schedule I thereto.

 

15.         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.

 

    	 

    	 

    

 

16.         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.

 

17.         Loss,
Theft, Destruction, or Mutilation. Upon receipt by the Company of reasonable evidence of the ownership of and the loss, theft,
destruction, or mutilation of this Warrant, the Company will execute and deliver, in lieu thereof, a new Warrant of like tenor.

 

18.         Taxes.
The Company will pay all taxes in respect of the issue of this Warrant or the Shares issuable upon exercise thereof.

 

    	 

    	 

    

 

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

 

	 	CDx, INC.
	 	 	 
	 	By:	 
	 	 	Daniel Yazbeck
	 	 	Chief Executive Officer

 

    	 

    	 

    

 

NOTICE OF EXERCISE

(to be signed only upon exercise of Warrant)

 

		To:	CDx, INC.

4225 Executive Square, Suite
600

La Jolla, CA 92037

Tel: (888) 710-4279

 

(1)         The
undersigned, the owner of the attached Warrant, hereby irrevocable elects to exercise the purchase rights represented by the Warrant
for, and to purchase thereunder, ____________________shares of Series B Preferred Stock of CDx, Inc. (the “Shares”),
and herewith makes payment of $____________________ by cash, check or wire transfer of said amount as and for the exercise price
in full for the purchase of such Shares, together with all applicable transfer taxes, if any. Please issue the Shares of Series
B Preferred Stock as to which this Warrant is exercised in accordance with the instructions set forth below and, if the Warrant
is being exercised with respect to less than all of the Shares to which it pertains, prepare and deliver a new Warrant of like
tenor for the balance of the Shares purchasable under the attached Warrant.

 

(2)         Please
issue said Shares in the name of the undersigned or in such other name as is specified as follows:

 

 

 

SIGNATURE

 

Executed at ____________________________________________,
on ___________________________, 2012.

 

	 	 
	 	Investor:  Type or Print Name
	 	 
	 	 
	 	Signature
	 	 
	 	 
	 	Investor, if Jointly Held:
	 	                            Type or Print Name
	 	 
	 	 
	 	Signature, if Jointly Held
	 	 
	 	 
	 	Title, if Signed on Behalf of a
	 	                            Non-Individual Investor

 

    	 

    	 

    

 

INSTRUCTIONS FOR REGISTRATION OF STOCK

 

	Name:	 
	 	                (
	Please Type or Print Address:	 
	 	 
	 	 
	Social Security Number or Federal Tax I.D. Number	 

 

		NOTICE:	The signature to the form of purchase must correspond
with the name as written upon the face of the attached Warrant in every particular without alteration or enlargement or any change
whatsoever, and must be guaranteed by a bank, other than a savings bank, or by a trust company or by a firm having membership
on a registered national securities exchange.

 

    	 

    	 

    

 

ASSIGNMENT FORM

 

(To assign the foregoing Warrant, execute
this form and supply required information. Do not use this form to purchase shares. Any consideration of assignment of the Warrant
should be discussed with the Company to confirm that assignment is permissible under the circumstances.)

 

FOR VALUE RECEIVED,
the foregoing Warrant and all rights evidenced thereby are hereby assigned to

 

	Name:	 	 
	 	 	(Please Print)
	 	 	 
	Address:	 	 
	 	 	(Please Print)
	 	 	 
	Social Security Number or Federal Tax I.D.	 	 
	 	 	 
	Dated: _______________ __, 201__	 	 
	 	 	 
	Holder’s Signature: ____________________________	 	 
	 	 	 
	Holder’s Address: _____________________________

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