EXHIBIT 10.3

EXHIBIT C

SUBSIDIARY GUARANTEE

SUBSIDIARY GUARANTEE, dated as of November      , 2006 (this “Guarantee”), made
by each of the signatories hereto (together with any other entity that may
become a party hereto as provided herein, (the “Guarantors”), in favor of the
purchasers signatory (the “Purchasers”) to that certain Securities Purchase
Agreement, dated as of the date hereof, between Xenomics, Inc., a Florida
corporation (the “Company”) and the Purchasers.

W I T N E S S E T H:

WHEREAS, pursuant to that certain Securities Purchase Agreement, dated as of the
date hereof, by and between the Company and the Purchasers (the “Purchase
Agreement”), the Company has agreed to sell and issue to the Purchasers, and the
Purchasers have agreed to purchase from the Company the Company’s Convertible
Debentures, due November      , 2008 (the “Debentures”), subject to the terms
and conditions set forth therein; and

WHEREAS, each Guarantor will directly benefit from the extension of credit to
the Company represented by the issuance of the Debentures; and

NOW, THEREFORE, in consideration of the premises and to induce the Purchasers to
enter into the Purchase Agreement and to carry out the transactions contemplated
thereby, each Guarantor hereby agrees with the Purchasers as follows:

1.             Definitions. Unless otherwise defined herein, terms defined in
the Purchase Agreement and used herein shall have the meanings given to them in
the Purchase Agreement. The words “hereof,” “herein,” “hereto” and “hereunder”
and words of similar import when used in this Guarantee shall refer to this
Guarantee as a whole and not to any particular provision of this Guarantee, and
Section and Schedule references are to this Guarantee unless otherwise
specified. The meanings given to terms defined herein shall be equally
applicable to both the singular and plural forms of such terms.  The following
terms shall have the following meanings:

“Guarantee” means this Subsidiary Guarantee, as the same may be amended,
supplemented or otherwise modified from time to time.

“Obligations” means the collective reference to all obligations and undertakings
of the Company of whatever nature, monetary or otherwise, under the Transaction
Documents or any other future agreement or obligations undertaken by the Company
to the Purchasers arising out of the Transaction Documents, together with all
reasonable attorneys’ fees, disbursements and all

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other costs and expenses of collection incurred by Purchasers in enforcing any
of such Obligations and/or this Guarantee.

2.             Guarantee.

(a)           Guarantee.

(i)                                     The Guarantors hereby, jointly and
severally, unconditionally and irrevocably, guarantee to the Purchasers and
their respective successors, indorsees, transferees and assigns, the prompt and
complete payment and performance by the Company when due (whether at the stated
maturity, by acceleration or otherwise) of the Obligations.

(ii)                                  Anything herein or in any other
Transaction Document to the contrary notwithstanding, the maximum liability of
each Guarantor hereunder and under the other Transaction Documents shall in no
event exceed the amount which can be guaranteed by such Guarantor under
applicable federal and state laws, including laws relating to the insolvency of
debtors, fraudulent conveyance or transfer or laws affecting the rights of
creditors generally (after giving effect to the right of contribution
established in Section 2(b)).

(iii)                               Each Guarantor agrees that the Obligations
may at any time and from time to time exceed the amount of the liability of such
Guarantor hereunder without impairing the guarantee contained in this Section 2
or affecting the rights and remedies of the Purchasers hereunder.

(iv)                              The guarantee contained in this Section 2
shall remain in full force and effect until all the Obligations and the
obligations of each Guarantor under the guarantee contained in this Section 2
shall have been satisfied by payment in full.

(v)                                 No payment made by the Company, any of the
Guarantors, any other guarantor or any other Person or received or collected by
the Purchasers from the Company, any of the Guarantors, any other guarantor or
any other Person by virtue of any action or proceeding or any set-off or
appropriation or application at any time or from time to time in reduction of or
in payment of the Obligations shall be deemed to modify, reduce, release or
otherwise affect the liability of any Guarantor hereunder which shall,

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notwithstanding any such payment (other than any payment made by such Guarantor
in respect of the Obligations or any payment received or collected from such
Guarantor in respect of the Obligations), remain liable for the Obligations up
to the maximum liability of such Guarantor hereunder until the Obligations are
paid in full.

(vi)                              Notwithstanding anything to the contrary in
this Agreement, with respect to any defaulted non-monetary Obligations the
specific performance of which by the Guarantors is not reasonably possible (e.g.
the issuance of the Company’s Common Stock), the Guarantors shall only be liable
for making the Purchasers whole on a monetary basis for the Company’s failure to
perform such Obligations in accordance with the Transaction Documents.

(b)           Right of Contribution. Each Guarantor hereby agrees that to the
extent that a Guarantor shall have paid more than its proportionate share of any
payment made hereunder, such Guarantor shall be entitled to seek and receive
contribution from and against any other Guarantor hereunder which has not paid
its proportionate share of such payment. Each Guarantor’s right of contribution
shall be subject to the terms and conditions of Section 2(c). The provisions of
this Section 2(b) shall in no respect limit the obligations and liabilities of
any Guarantor to the Purchasers, and each Guarantor shall remain liable to the
Purchasers for the full amount guaranteed by such Guarantor hereunder.

(c)           No Subrogation.  Notwithstanding any payment made by any Guarantor
hereunder or any set-off or application of funds of any Guarantor by the
Purchasers, no Guarantor shall be entitled to be subrogated to any of the rights
of the Purchasers against the Company or any other Guarantor or any collateral
security or guarantee or right of offset held by the Purchasers for the payment
of the Obligations, nor shall any Guarantor seek or be entitled to seek any
contribution or reimbursement from the Company or any other Guarantor in respect
of payments made by such Guarantor hereunder, until all amounts owing to the
Purchasers by the Company on account of the Obligations are paid in full. If any
amount shall be paid to any Guarantor on account of such subrogation rights at
any time when all of the Obligations shall not have been paid in full, such
amount shall be held by such Guarantor in trust for the Purchasers, segregated
from other funds of such Guarantor, and shall, forthwith upon receipt by such
Guarantor, be turned over to the Purchasers in the exact form received by such
Guarantor (duly indorsed by such Guarantor to the Purchasers, if required), to
be applied against the Obligations, whether matured or unmatured, in such order
as the Purchasers may determine.

(d)           Amendments, Etc. With Respect to the Obligations. Each Guarantor
shall remain obligated hereunder notwithstanding that, without any

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reservation of rights against any Guarantor and without notice to or further
assent by any Guarantor, any demand for payment of any of the Obligations made
by the Purchasers may be rescinded by the Purchasers and any of the Obligations
continued, and the Obligations, or the liability of any other Person upon or for
any part thereof, or any collateral security or guarantee therefor or right of
offset with respect thereto, may, from time to time, in whole or in part, be
renewed, extended, amended, modified, accelerated, compromised, waived,
surrendered or released by the Purchasers, and the Purchase Agreement and the
other Transaction Documents and any other documents executed and delivered in
connection therewith may be amended, modified, supplemented or terminated, in
whole or in part, as the Purchasers may deem advisable from time to time, and
any collateral security, guarantee or right of offset at any time held by the
Purchasers for the payment of the Obligations may be sold, exchanged, waived,
surrendered or released. The Purchasers shall have no obligation to protect,
secure, perfect or insure any Lien at any time held by them as security for the
Obligations or for the guarantee contained in this Section 2 or any property
subject thereto.

(e)           Guarantee Absolute and Unconditional. Each Guarantor waives any
and all notice of the creation, renewal, extension or accrual of any of the
Obligations and notice of or proof of reliance by the Purchasers upon the
guarantee contained in this Section 2 or acceptance of the guarantee contained
in this Section 2; the Obligations, and any of them, shall conclusively be
deemed to have been created, contracted or incurred, or renewed, extended,
amended or waived, in reliance upon the guarantee contained in this Section 2;
and all dealings between the Company and any of the Guarantors, on the one hand,
and the Purchasers, on the other hand, likewise shall be conclusively presumed
to have been had or consummated in reliance upon the guarantee contained in this
Section 2. Each Guarantor waives to the extent permitted by law diligence,
presentment, protest, demand for payment and notice of default or nonpayment to
or upon the Company or any of the Guarantors with respect to the Obligations,
except as provided in the Transaction Documents. Each Guarantor understands and
agrees that the guarantee contained in this Section 2 shall be construed as a
continuing, absolute and unconditional guarantee of payment without regard to
(a) the validity or enforceability of the Purchase Agreement or any other
Transaction Document, any of the Obligations or any other collateral security
therefor or guarantee or right of offset with respect thereto at any time or
from time to time held by the Purchasers, (b) any defense, set-off or
counterclaim (other than a defense of payment or performance or fraud or
misconduct by Purchasers) which may at any time be available to or be asserted
by the Company or any other Person against the Purchasers, or (c) any other
circumstance whatsoever (with or without notice to or knowledge of the Company
or such Guarantor) which constitutes, or might be construed to constitute, an
equitable or legal discharge of the Company for the Obligations, or of such
Guarantor under the guarantee contained in this Section 2, in bankruptcy or in
any other instance. When making any demand hereunder or otherwise pursuing its
rights and remedies hereunder against any Guarantor, the Purchasers may, but
shall be under no obligation to,

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make a similar demand on or otherwise pursue such rights and remedies as they
may have against the Company, any other Guarantor or any other Person or against
any collateral security or guarantee for the Obligations or any right of offset
with respect thereto, and any failure by the Purchasers to make any such demand,
to pursue such other rights or remedies or to collect any payments from the
Company, any other Guarantor or any other Person or to realize upon any such
collateral security or guarantee or to exercise any such right of offset, or any
release of the Company, any other Guarantor or any other Person or any such
collateral security, guarantee or right of offset, shall not relieve any
Guarantor of any obligation or liability hereunder, and shall not impair or
affect the rights and remedies, whether express, implied or available as a
matter of law, of the Purchasers against any Guarantor. For the purposes hereof,
“demand” shall include the commencement and continuance of any legal
proceedings.

(f)            Reinstatement. The guarantee contained in this Section 2 shall
continue to be effective, or be reinstated, as the case may be, if at any time
payment, or any part thereof, of any of the Obligations is rescinded or must
otherwise be restored or returned by the Purchasers upon the insolvency,
bankruptcy, dissolution, liquidation or reorganization of the Company or any
Guarantor, or upon or as a result of the appointment of a receiver, intervenor
or conservator of, or trustee or similar officer for, the Company or any
Guarantor or any substantial part of its property, or otherwise, all as though
such payments had not been made.

(g)           Payments. Each Guarantor hereby guarantees that payments hereunder
will be paid to the Purchasers without set-off or counterclaim in U.S. dollars
at the address set forth or referred to in the Purchase Agreement.

3.             Representations and Warranties. Each Guarantor hereby makes the
following representations and warranties to Purchasers as of the date hereof:

(a)           Organization and Qualification. The Guarantor is a corporation,
duly incorporated, validly existing and in good standing under the laws of the
applicable jurisdiction set forth on Schedule 1, with the requisite corporate
power and authority to own and use its properties and assets and to carry on its
business as currently conducted. The Guarantor has no subsidiaries other than
those identified as such on the Disclosure Schedules to the Purchase Agreement.
The Guarantor is duly qualified to do business and is in good standing as a
foreign corporation in each jurisdiction in which the nature of the business
conducted or property owned by it makes such qualification necessary, except
where the failure to be so qualified or in good standing, as the case may be,
could not, individually or in the aggregate, (x) adversely affect the legality,
validity or enforceability of any of this Guarantee in any material respect, (y)
have a material adverse effect on the results of operations, assets, prospects,
or financial condition of the Guarantor or (z) adversely impair in any material
respect the Guarantor’s ability to

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perform fully on a timely basis its obligations under this Guarantee (a
“Material Adverse Effect”).

(b)           Authorization; Enforcement.  The Guarantor has the requisite
corporate power and authority to enter into and to consummate the transactions
contemplated by this Guarantee, and otherwise to carry out its obligations
hereunder. The execution and delivery of this Guarantee by the Guarantor and the
consummation by it of the transactions contemplated hereby have been duly
authorized by all requisite corporate action on the part of the Guarantor. This
Guarantee has been duly executed and delivered by the Guarantor and constitutes
the valid and binding obligation of the Guarantor enforceable against the
Guarantor in accordance with its terms, except as such enforceability may be
limited by applicable bankruptcy, insolvency, reorganization, moratorium,
liquidation or similar laws relating to, or affecting generally the enforcement
of, creditors’ rights and remedies or by other equitable principles of general
application.

(c)           No Conflicts. The execution, delivery and performance of this
Guarantee by the Guarantor and the consummation by the Guarantor of the
transactions contemplated thereby do not and will not (i) conflict with or
violate any provision of its Certificate of Incorporation or By-laws or (ii)
conflict with, constitute a default (or an event which with notice or lapse of
time or both would become a default) under, or give to others any rights of
termination, amendment, acceleration or cancellation of, any agreement,
indenture or instrument to which the Guarantor is a party, or (iii) result in a
violation of any law, rule, regulation, order, judgment, injunction, decree or
other restriction of any court or governmental authority to which the Guarantor
is subject (including Federal and state securities laws and regulations), or by
which any material property or asset of the Guarantor is bound or affected,
except in the case of each of clauses (ii) and (iii), such conflicts, defaults,
terminations, amendments, accelerations, cancellations and violations as could
not, individually or in the aggregate, have or result in a Material Adverse
Effect. The business of the Guarantor is not being conducted in violation of any
law, ordinance or regulation of any governmental authority, except for
violations which, individually or in the aggregate, do not have a Material
Adverse Effect.

(d)           Consents and Approvals. The Guarantor is not required to obtain
any consent, waiver, authorization or order of, or make any filing or
registration with, any court or other federal, state, local, foreign or other
governmental authority or other person in connection with the execution,
delivery and performance by the Guarantor of this Guarantee.

(e)           Purchase Agreement. The representations and warranties of the
Company set forth in the Purchase Agreement as they relate to such Guarantor,
each of which is hereby incorporated herein by reference, are true and correct
as of each time such representations are deemed to be made pursuant to such

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Purchase Agreement, and the Purchasers shall be entitled to rely on each of them
as if they were fully set forth herein, provided, that each reference in each
such representation and warranty to the Company’s knowledge shall, for the
purposes of this Section 3, be deemed to be a reference to such Guarantor’s
knowledge.

(f)            Foreign Law.  Each Guarantor has consulted with appropriate
foreign legal counsel with respect to any of the above representations for which
non-U.S. law is applicable. Such foreign counsel have advised each applicable
Guarantor that such counsel knows of no reason why any of the above
representations would not be true and accurate. Such foreign counsel were
provided with copies of this Subsidiary Guarantee and the Transaction Documents
prior to rendering their advice.

4.             Covenants.

(a)       Each Guarantor covenants and agrees with the Purchasers that, from and
after the date of this Guarantee until the Obligations shall have been paid in
full, such Guarantor shall take, and/or shall refrain from taking, as the case
may be, each commercially reasonable action that is necessary to be taken or not
taken, as the case may be, so that no Event of Default is caused by the failure
to take such action or to refrain from taking such action by such Guarantor.

(b)       So long as any of the Obligations are outstanding, each Guarantor will
not directly or indirectly on or after the date of this Guarantee:

i.              except with the prior written consent of the Lead Investor (as
defined in the Securities Purchase Agreement), enter into, create, incur, assume
or suffer to exist any indebtedness for borrowed money of any kind, including
but not limited to, a guarantee, on or with respect to any of its property or
assets now owned or hereafter acquired or any interest therein or any income or
profits therefrom that is senior to, or pari passu with, in any respect, such
Guarantor’s obligations hereunder;

ii.             enter into, create, incur, assume or suffer to exist any liens
of any kind, on or with respect to any of its property or assets now owned or
hereafter acquired or any interest therein or any income or profits therefrom
that is senior to, in any respect, such Guarantor’s obligations hereunder,
except for Permitted Liens;

iii.            amend its certificate of incorporation, bylaws or other charter
documents so as to adversely affect any rights of the Purchasers;

iv.            repay, repurchase or offer to repay, repurchase or otherwise
acquire more than a de minimis number of shares of Common Stock or Common Stock
Equivalents other than (i) as to the Conversion Shares to the extent permitted
or required under the Transaction Documents, (ii) as

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otherwise permitted by the Transaction Documents or (iii) shares of Common Stock
held by former employees of the Company which the Company is entitled to
repurchase from such employees pursuant to contractual rights relating to their
termination of employment, provided such repurchases do not exceed $50,000 in
any 12 month period;

v.             enter into any agreement with respect to any of the foregoing; or

vi.            pay cash dividends on any equity securities of the Company.

5.             Miscellaneous.

(a)           Amendments in Writing. None of the terms or provisions of this
Guarantee may be waived, amended, supplemented or otherwise modified except in
writing by the Purchasers and the Guarantor.

(b)           Notices. All notices, requests and demands to or upon the
Purchasers or any Guarantor hereunder shall be effected in the manner provided
for in the Purchase Agreement; provided that any such notice, request or demand
to or upon any Guarantor shall be addressed to such Guarantor at its notice
address set forth on Schedule 5(b).

(c)           No Waiver By Course Of Conduct; Cumulative Remedies. The
Purchasers shall not by any act (except by a written instrument pursuant to
Section 5(a)), delay, indulgence, omission or otherwise be deemed to have waived
any right or remedy hereunder or to have acquiesced in any default under the
Transaction Documents or Event of Default. No failure to exercise, nor any delay
in exercising, on the part of the Purchasers, any right, power or privilege
hereunder shall operate as a waiver thereof. No single or partial exercise of
any right, power or privilege hereunder shall preclude any other or further
exercise thereof or the exercise of any other right, power or privilege. A
waiver by the Purchasers of any right or remedy hereunder on any one occasion
shall not be construed as a bar to any right or remedy which the Purchasers
would otherwise have on any future occasion. The rights and remedies herein
provided are cumulative, may be exercised singly or concurrently and are not
exclusive of any other rights or remedies provided by law.

(d)           Enforcement Expenses; Indemnification.

(i)                                     Each Guarantor agrees to pay, or
reimburse the Purchasers for, all their costs and expenses incurred in
collecting against such Guarantor under the guarantee contained in Section 2 or
otherwise enforcing any rights under this Guarantee and the other Transaction
Documents to which

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such Guarantor is a party, including, without limitation, the reasonable fees
and disbursements of counsel to the Purchasers.

(ii)                                  Each Guarantor agrees to pay, and to save
the Purchasers harmless from, any and all liabilities with respect to, or
resulting from any delay in paying, any and all stamp, excise, sales or other
taxes which may be payable or determined to be payable in connection with any of
the transactions contemplated by this Guarantee to the extent the Company would
be required to do so pursuant to the Purchase Agreement.

(iii)                               Each Guarantor agrees to pay, and to save
the Purchasers harmless from, any and all liabilities, obligations, losses,
damages, penalties, actions, judgments, suits, costs, expenses or disbursements
of any kind or nature whatsoever with respect to the execution, delivery,
enforcement, performance and administration of this Guarantee to the extent the
Company would be required to do so pursuant to the Purchase Agreement.

(iv)                              The agreements in this Section shall survive
repayment of the Obligations and all other amounts payable under the Purchase
Agreement and the other Transaction Documents.

(e)           Successor and Assigns. This Guarantee shall be binding upon the
successors and assigns of each Guarantor and shall inure to the benefit of the
Purchasers and their respective successors and assigns; provided that no
Guarantor may assign, transfer or delegate any of its rights or obligations
under this Guarantee without the prior written consent of the Purchasers.

(f)            Set-Off. Each Guarantor hereby irrevocably authorizes the
Purchasers at any time and from time to time while an Event of Default under any
of the Transaction Documents shall have occurred and be continuing, upon at
least five (5) days notice to such Guarantor or any other Guarantor to set-off
and appropriate and apply any and all deposits, credits, indebtedness or claims,
in any currency, in each case whether direct or indirect, absolute or
contingent, matured or unmatured, at any time held or owing by the Purchasers to
or for the credit or the account of such Guarantor, or any part thereof in such
amounts as the Purchasers may elect, against and on account of the obligations
and liabilities of such Guarantor to the Purchasers hereunder and claims of
every nature and description of the Purchasers against such Guarantor, in any
currency, whether arising hereunder, under the Purchase Agreement, any other
Transaction Document or otherwise, as the Purchasers may elect, whether or not
the Purchasers have made any demand for payment and although such obligations,

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liabilities and claims may be contingent or unmatured. Thereafter, the
Purchasers shall notify such Guarantor promptly of any such set-off and the
application made by the Purchasers of the proceeds thereof, provided that the
failure to give such notice shall not affect the validity of such set-off and
application. The rights of the Purchasers under this Section are in addition to
other rights and remedies (including, without limitation, other rights of
set-off) which the Purchasers may have.

(g)           Counterparts. This Guarantee may be executed by one or more of the
parties to this Guarantee on any number of separate counterparts (including by
telecopy), and all of said counterparts taken together shall be deemed to
constitute one and the same instrument.

(h)           Severability. Any provision of this Guarantee 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, and any such prohibition or
unenforceability in any jurisdiction shall not invalidate or render
unenforceable such provision in any other jurisdiction.

(i)            Section Headings. The Section headings used in this Guarantee are
for convenience of reference only and are not to affect the construction hereof
or be taken into consideration in the interpretation hereof.

(j)            Integration. This Guarantee and the other Transaction Documents
represent the agreement of the Guarantors and the Purchasers with respect to the
subject matter hereof and thereof, and there are no promises, undertakings,
representations or warranties by the Purchasers relative to subject matter
hereof and thereof not expressly set forth or referred to herein or in the other
Transaction Documents.

(k)           Governing Law. THIS GUARANTEE SHALL BE GOVERNED BY, AND CONSTRUED
AND INTERPRETED IN ACCORDANCE WITH, THE LAW OF THE STATE OF NEW YORK WITHOUT
REGARD TO ANY PRINCIPLES OF CONFLICTS OF LAWS.

(l)            Submission to Jurisdictional; Waiver. Each Guarantor hereby
irrevocably and unconditionally:

(i)                                     submits for itself and its property in
any legal action or proceeding relating to this Guarantee and the other
Transaction Documents to which it is a party, or for recognition and enforcement
of any judgment in respect thereof, to the non-exclusive general jurisdiction of
the Courts of the State of New York, located in New York County, New York, the
courts of the United States of

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America for the Southern District of New York, and appellate courts from any
thereof;

(ii)                                  consents that any such action or
proceeding may be brought in such courts and waives any objection that it may
now or hereafter have to the venue of any such action or proceeding in any such
court or that such action or proceeding was brought in an inconvenient court and
agrees not to plead or claim the same;

(iii)                               agrees that service of process in any such
action or proceeding may be effected by mailing a copy thereof by registered or
certified mail (or any substantially similar form of mail), postage prepaid, to
such Guarantor at its address referred to in the Purchase Agreement or at such
other address of which the Purchasers shall have been notified pursuant thereto;

(iv)                              agrees that nothing herein shall affect the
right to effect service of process in any other manner permitted by law or shall
limit the right to sue in any other jurisdiction; and

(v)                                 waives, to the maximum extent not prohibited
by law, any right it may have to claim or recover in any legal action or
proceeding referred to in this Section any special, exemplary, punitive or
consequential damages.

(m)          Acknowledgements.  Each Guarantor hereby acknowledges that:

(i)                                     it has been advised by counsel in the
negotiation, execution and delivery of this Guarantee and the other Transaction
Documents to which it is a party;

(ii)                                  the Purchasers have no fiduciary
relationship with or duty to any Guarantor arising out of or in connection with
this Guarantee or any of the other Transaction Documents, and the relationship
between the Guarantors, on the one hand, and the Purchasers, on the other hand,
in connection herewith or therewith is solely that of debtor and creditor; and

(iii)                               no joint venture is created hereby or by the
other Transaction Documents or otherwise exists by virtue of the transactions
contemplated hereby among the Guarantors and the Purchasers.

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(n)           Additional Guarantors.  The Company shall cause each of its
subsidiaries formed or acquired on or subsequent to the date hereof to become a
Guarantor for all purposes of this Guarantee by executing and delivering an
Assumption Agreement in the form of Annex 1 hereto.

(o)           Release of Guarantors. Subject to Section 2.6, each Guarantor will
be released from all liability hereunder concurrently with the repayment in full
of all amounts owed under the Purchase Agreement, the Debentures and the other
Transaction Documents.

(p)           Seniority. The obligations of each of the Guarantors hereunder
rank senior in priority to any other unsecured Debt (as defined in the
Debentures) of such Guarantor.

(q)           Waiver of Jury Trial. EACH GUARANTOR AND, BY ACCEPTANCE OF THE
BENEFITS HEREOF, THE PURCHASERS, HEREBY IRREVOCABLY AND UNCONDITIONALLY WAIVE
TRIAL BY JURY IN ANY LEGAL ACTION OR PROCEEDING RELATING TO THIS GUARANTEE AND
FOR ANY COUNTERCLAIM THEREIN.

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IN WITNESS WHEREOF, each of the undersigned has caused this Guarantee to be duly
executed and delivered as of the date first above written.

 

XENOMICS, a California corporation

 

 

 

 

 

 

 

 

By:

 

 

 

 

Name:

Frederick Larcombe

 

 

Title:

CFO

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SCHEDULE 1

GUARANTORS

The following are the names, notice addresses and jurisdiction of organization
of each Guarantor.

 

 

 

COMPANY

 

 

 

JURISDICTION OF

 

OWNED BY

 

 

 

INCORPORATION

 

PERCENTAGE

 

Xenomics

 

California

 

100

%

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Annex 1 to

SUBSIDIARY GUARANTEE

ASSUMPTION AGREEMENT, dated as of           ,           made by
                                             , a                      
corporation (the “Additional Guarantor”), in favor of the Purchasers pursuant to
the Purchase Agreement referred to below. All capitalized terms not defined
herein shall have the meaning ascribed to them in such Purchase Agreement.

W I T N E S S E T H :

WHEREAS, Xenomics, Inc., a Florida corporation (the “Company”) and the
Purchasers have entered into a Securities Purchase Agreement, dated as of
November      , 2006 (as amended, supplemented or otherwise modified from time
to time, the “Purchase Agreement”);

WHEREAS, in connection with the Purchase Agreement, the Company and its
Subsidiaries (other than the Additional Guarantor) have entered into the
Subsidiary Guarantee, dated as of November      , 2006 (as amended, supplemented
or otherwise modified from time to time, the “Guarantee”) in favor of the
Purchasers;

WHEREAS, the Purchase Agreement requires the Additional Guarantor to become a
party to the Guarantee; and

WHEREAS, the Additional Guarantor has agreed to execute and deliver this
Assumption Agreement in order to become a party to the Guarantee;

NOW, THEREFORE, IT IS AGREED:

1.             Guarantee. By executing and delivering this Assumption Agreement,
the Additional Guarantor, as provided in Section 5(n) of the Guarantee, hereby
becomes a party to the Guarantee as a Guarantor thereunder with the same force
and effect as if originally named therein as a Guarantor and, without limiting
the generality of the foregoing, hereby expressly assumes all obligations and
liabilities of a Guarantor thereunder. The information set forth in Annex 1-A
hereto is hereby added to the information set forth in Schedule 1 to the
Guarantee. The Additional Guarantor hereby represents and warrants that each of
the representations and warranties contained in Section 3 of the Guarantee is
true and correct on and as the date hereof as to such Additional Guarantor
(after giving effect to this Assumption Agreement) as if made on and as of such
date.

2.             Governing Law. THIS ASSUMPTION AGREEMENT SHALL BE GOVERNED BY,
AND CONSTRUED AND INTERPRETED IN ACCORDANCE WITH, THE LAW OF THE STATE OF NEW
YORK.

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IN WITNESS WHEREOF, the undersigned has caused this Assumption Agreement to be
duly executed and delivered as of the date first above written.

 

[ADDITIONALGUARANTOR]

 

 

 

By:

 

 

 

Name:

 

Title:

 

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