Document:

EX-10.10

This Instrument Prepared by And

Upon Recordation Return to:

KATTEN MUCHIN ROSENMAN LLP

401 South Tryon Street, Suite 2600

Charlotte, North Carolina 28202

Attention: Daniel S. Huffenus, Esq.

NNN Lenox Medical, LLC,

a Delaware limited liability company, as assignor

(Borrower)

to

LaSalle Bank National Association, as assignee

(Lender)

ASSIGNMENT

OF LEASES AND RENTS

Dated: January 2, 2007

	 	 	 
	Location:

	 	6730 Lenox Center Court

Memphis, Tennessee

The maximum principal indebtedness for Tennessee recording tax purposes is $0.00, tax having
been paid in connection with the recording of Instrument Number      [or Deed Book      ,
page      ] of record in the Office of the Register for Shelby County, Tennessee

1

THIS
ASSIGNMENT OF LEASES AND RENTS (“Assignment”) made as of the 2nd day of January, 2007,
by NNN Lenox Medical, LLC, a Delaware limited liability company, having its principal place of
business at 1551 N. Tustin Avenue, Suite 300, Santa Ana, California 92705 (“Borrower”) to LaSalle
Bank National Association, a national banking association, having an address at 135 S. LaSalle
Street, Suite 3410, Chicago, Illinois 60603, Attn: Real Estate Capital Markets, its successors and
assigns, as assignee (“Lender”).

R E C I T A L S:

Borrower by its promissory note of even date herewith given to Lender is indebted to Lender in
the principal sum of Twelve Million and No/100ths Dollars ($12,000,000.00) in lawful money of the
United States of America (together with all extensions, renewals, modifications, substitutions and
amendments thereof, the “Note”), with interest from the date thereof at the rates set forth in the
Note, principal and interest to be payable in accordance with the terms and conditions provided in
the Note.

Borrower desires to secure the payment of the Debt (defined below) and the performance of all
of its obligations under the Note and the other Obligations as defined in Recital B of the Security
Instrument (defined below).

ARTICLE 1

ASSIGNMENT

Section 1.1 Property Assigned. Borrower hereby absolutely and unconditionally assigns
and grants to Lender the following property, rights, interests and estates, now owned, or hereafter
acquired by Borrower:

(a) Leases. All existing and future leases affecting the use, enjoyment, or
occupancy of all or any part of that certain lot or piece of land, more particularly
described in Exhibit A annexed hereto and made a part hereof, together with the
buildings, structures, fixtures, additions, enlargements, extensions, modifications,
repairs, replacements and improvements now or hereafter located thereon (collectively, the
“Property”) and the right, title and interest of Borrower, its successors and assigns,
therein and thereunder.

(b) Other Leases and Agreements. All other leases, subleases and other
agreements, whether or not in writing, affecting the use, enjoyment or occupancy of the
Property or any portion thereof now or hereafter made, whether made before or after the
filing by or against Borrower of any petition for relief under 11 U.S.C. § 101 et seq., as
the same may be amended from time to time (the “Bankruptcy Code”) together with any
extension, renewal or replacement of the same, this Assignment of other present and future
leases and present and future agreements being effective without further or supplemental
assignment. The leases described in Subsection 1.1(a) and the leases and other agreements
described in this Subsection 1.1(b), together with all other present and future leases and
present and future agreements and any extension or renewal of the same are collectively
referred to as the “Leases”.

(c) Rents. All rents, additional rents, revenues, income, issues and profits
arising from the Leases and renewals and replacements thereof and any cash or security
deposited in connection therewith and together with all rents, revenues, income, issues and
profits from the use, enjoyment and occupancy of the Property, and all royalties, overriding
royalties, bonuses, delay rentals and any other amount of any kind or character arising
under any and all present and all future oil, gas and mining Leases covering the Property
or any part thereof, and all proceeds and other amounts paid or owing to Borrower under or
pursuant to any and all contracts and bonds relating to the construction, erection or
renovation of the Property, whether paid or accruing before or after the filing by or
against Borrower of any petition for relief under the Bankruptcy Code (collectively, the
“Rents”).

(d) Bankruptcy Claims. All of Borrower’s claims and rights (the “Bankruptcy
Claims”) to the payment of damages arising from any rejection by a lessee of any Lease under
the Bankruptcy Code.

(e) Lease Guaranties. All of Borrower’s right, title and interest in and
claims under any and all lease guaranties, letters of credit and any other credit support
given by any guarantor in connection with any of the Leases (individually, a “Lease
Guarantor”, collectively, the “Lease Guarantors”) to Borrower (individually, a “Lease
Guaranty”, collectively, the “Lease Guaranties”).

(f) Proceeds. All proceeds from the sale or other disposition of the Leases,
the Rents, the Lease Guaranties and the Bankruptcy Claims (collectively, “Proceeds”).

(g) Other. All rights, powers, privileges, options and other benefits of
Borrower as lessor under the Leases and beneficiary under the Lease Guaranties, including
without limitation, the immediate and continuing right to make claim for, receive, collect
and receipt for, all Rents payable or receivable under the Leases and all sums payable under
the Lease Guaranties or pursuant thereto (and to apply the same to the payment of the Debt
or the Other Obligations), and to do all other things which Borrower or any lessor is or may
become entitled to do under the Leases or the Lease Guaranties (collectively, “Other
Rights”).

(h) Entry. The right, at Lender’s option, upon revocation of the license
granted herein, to enter upon the Property in person, by agent or by court-appointed
receiver, to collect the Rents.

(i) Power of Attorney. Borrower’s irrevocable power of attorney, coupled with
an interest, to take any and all of the actions set forth in Section 3.1 of this Assignment
and any or all other actions designated by Lender for the proper management and preservation
of the Property.

(j) Other Rights and Agreements. Any and all other rights of Borrower in and
to the items set forth in subsections (a) through (i) above, and all amendments,
modifications, replacements, renewals and substitutions thereof.

Section 1.2 Consideration. This Assignment is made in consideration of that certain
loan made by Lender to Borrower evidenced by the Note and secured by that certain Deed of Trust,
Security Agreement and Fixture Filing, given by Borrower to or for the benefit of Lender, dated the
date hereof, covering the Property and intended to be duly recorded (the “Security Instrument”).
The principal sum, interest and all other sums due and payable under the Note, the Security
Instrument, this Assignment and the Other Security Documents (defined below) are collectively
referred to as the “Debt”. The documents other than this Assignment, the Note or the Security
Instrument now or hereafter executed by Borrower and/or others and by or in favor of Lender which
wholly or partially secure or guarantee payment of the Debt are referred to herein as the “Other
Security Documents”.

Section 1.3 Termination of Assignment. Upon payment in full of the Debt, this
Assignment shall become null and void and shall be of no further force and effect.

ARTICLE 2

TERMS OF ASSIGNMENT

Section 2.1 Present Assignment and License Back. The parties intend that this
Assignment grants a present, absolute, and unconditional assignment of the Leases, Rents, Lease
Guaranties and Bankruptcy Claims, Proceeds, and Other Rights and shall, immediately upon execution,
give Lender the right to collect the Rents and other sums due under the Lease Guaranties and to
apply them in payment of the Debt. Such assignment and grant shall continue in effect until the
Debt is paid in full and all of the Other Obligations are fully satisfied. Subject to the
provisions set forth herein and provided there is no Default (as defined below), Lender grants to
Borrower a revocable license to enforce the Leases and collect the Rents as they become due
(excluding, however, any Lease termination, cancellation or similar payments which Borrower agrees
shall be delivered to Lender and held in the TI and Leasing Reserve (as defined in the Security
Instrument)), and Borrower shall hold the same, in trust, to be applied first to the payment of all
impositions, levies, taxes, assessments and other charges upon the Property, second to maintenance
of insurance policies upon the Property required hereby, third to the expenses of Property
operations, including maintenance and repairs required hereby, fourth to the payment of that
portion of the Indebtedness then due and payable, and fifth, the balance, if any, to or as directed
by Borrower. Borrower shall deliver such Rents to Lender as are necessary for the payment of
principal, interest and other sums payable under the Loan Documents (as defined in the Security
Instrument) as such sums become due.

Borrower shall comply with and observe Borrower’s obligations as landlord under all Leases.
Borrower will not lease any portion of the Property for use which is not consistent with the
permitted use of the Property, except with the prior written approval of Lender. Borrower, at
Lender’s request, shall furnish Lender with executed copies of all Leases, and all Leases and
amendments thereto hereafter entered into will be on a form of Lease previously approved by Lender.
All renewals of Leases and all proposed Leases for space in the Property shall provide for rental
rates comparable to existing local market rates and shall be arms-length transactions.

Section 2.2 Notice to Lessees. Borrower hereby agrees to authorize and direct the
lessees named in the Leases or any other or future lessees or occupants of the Property and all
Lease Guarantors to pay over to Lender or to such other party as Lender directs all Rents and all
sums due under any Lease Guaranties upon receipt from Lender of written notice to the effect that
Lender is then the holder of the Security Instrument and that a Default exists, and to continue so
to do until otherwise notified by Lender.

Section 2.3 Incorporation by Reference. All representations, warranties, covenants,
conditions and agreements contained in the Security Instrument as same may be modified, renewed,
substituted or extended are hereby made a part of this Assignment to the same extent and with the
same force as if fully set forth herein.

ARTICLE 3

REMEDIES

Section 3.1 Remedies of Lender. Upon and during the continuance of an Event of
Default (as defined in the Security Instrument) (sometimes referred to herein as a “Default”), the
license granted to Borrower in Section 2.1 of this Assignment shall automatically be revoked, and
Lender shall immediately be entitled to possession of all Rents and sums due under any Lease
Guaranties, whether or not Lender enters upon or takes control of the Property. In addition,
Lender may, at its option, without waiving such Default, without notice and without regard to the
adequacy of the security for the Debt, either in person or by agent, nominee or attorney, with or
without bringing any action or proceeding, or by a receiver appointed by a court (which such
appointment of receiver shall, upon application to a court of competent jurisdiction, be a matter
of strict right, without notice), dispossess Borrower and its agents and servants from the
Property, without liability for trespass, damages or otherwise and exclude Borrower and its agents
wholly therefrom, and take possession of the Property and all books, records and accounts relating
thereto and have, hold, manage, lease and operate the Property on such terms and for such period of
time as Lender may deem proper and either with or without taking possession of the Property in its
own name, demand, sue for or otherwise collect and receive all Rents and sums due under all Lease
Guaranties, including those past due and unpaid with full power to make from time to time all
alterations, renovations, repairs or replacements thereto or thereof as may seem proper to Lender
and may apply the Rents and sums received pursuant to any Lease Guaranties to the payment of the
following in such order and proportion as Lender in its sole discretion may determine, any law,
custom or use to the contrary notwithstanding: (a) all expenses of managing and securing the
Property, including, without being limited thereto, the salaries, fees and wages of a managing
agent and such other employees or agents as Lender may deem necessary or desirable and all expenses
of operating and maintaining the Property, including, without being limited thereto, all taxes,
charges, claims, assessments, water charges, sewer rents and any other liens, and premiums for all
insurance which Lender may deem necessary or desirable, and the cost of all alterations,
renovations, repairs or replacements, and all expenses incident to taking and retaining possession
of the Property; (b) payment of all expenses for normal maintenance of the Property, and (c) the
Debt, together with all costs and reasonable attorneys’ fees. In addition, upon the occurrence of
a Default, Lender, at its option, may (1) complete any construction on the Property in such manner
and form as Lender deems advisable, (2) exercise all rights and powers of Borrower, including,
without limitation, the right to negotiate, execute, cancel, enforce or modify Leases, obtain and
evict tenants, and demand, sue for, collect and receive all Rents from the Property and all sums
due under any Lease Guaranties, (3) either require Borrower to pay monthly in advance to Lender or
any receiver appointed to collect the Rents, the fair and reasonable rental value for the use and
occupancy of such part of the Property as may be in possession of Borrower or (4) require Borrower
to vacate and surrender possession of the Property to Lender or to such receiver and, in default
thereof, Borrower may be evicted by summary proceedings or otherwise.

Section 3.2 Other Remedies. Nothing contained in this Assignment and no act done or
omitted by Lender pursuant to the power and rights granted to Lender hereunder shall be deemed to
be a waiver by Lender of its rights and remedies under the Note, the Security Instrument, or the
Other Security Documents and this Assignment is made and accepted without prejudice to any of the
rights and remedies possessed by Lender under the terms thereof. The right of Lender to collect
the Debt and to enforce any other security therefor held by it may be exercised by Lender either
prior to, simultaneously with, or subsequent to any action taken by it hereunder. Borrower hereby
absolutely, unconditionally and irrevocably waives any and all rights to assert any setoff,
counterclaim or crossclaim of any nature whatsoever with respect to the obligations of Borrower
under this Assignment, the Note, the Security Instrument, the Other Security Documents or otherwise
with respect to the loan secured hereby in any action or proceeding brought by Lender to collect
same, or any portion thereof, or to enforce and realize upon the lien and security interest created
by this Assignment, the Note, the Security Instrument, or any of the Other Security Documents
(provided, however, that the foregoing shall not be deemed a waiver of Borrower’s right to assert
any compulsory counterclaim if such counterclaim is compelled under local law or rule of procedure,
nor shall the foregoing be deemed a waiver of Borrower’s right to assert any claim which would
constitute a defense, setoff, counterclaim or crossclaim of any nature whatsoever against Lender in
any separate action or proceeding).

Section 3.3 Other Security. Subject to Paragraph 3 of the Note, Lender may take or
release other security for the payment of the Debt, may release any party primarily or secondarily
liable therefor and may apply any other security held by it to the reduction or satisfaction of the
Debt without prejudice to any of its rights under this Assignment.

Section 3.4 Non-Waiver. The exercise by Lender of the option granted it in
Section 3.1 of this Assignment and the collection of the Rents and sums due under the Lease
Guaranties and the application thereof as herein provided shall not be considered a waiver of any
default by Borrower under the Note, the Security Instrument, the Leases, this Assignment or the
Other Security Documents. The failure of Lender to insist upon strict performance of any term
hereof shall not be deemed to be a waiver of any term of this Assignment. Borrower shall not be
relieved of Borrower’s obligations hereunder by reason of (a) the failure of Lender to comply with
any request of Borrower or any other party to take any action to enforce any of the provisions
hereof or of the Security Instrument, the Note or the Other Security Documents, (b) the release
regardless of consideration, of the whole or any part of the Property, or (c) any agreement or
stipulation by Lender extending the time of payment or otherwise modifying or supplementing the
terms of this Assignment, the Note, the Security Instrument or the Other Security Documents.
Lender may resort for the payment of the Debt to any other security held by Lender in such order
and manner as Lender, in its discretion, may elect. Lender may take any action to recover the
Debt, or any portion thereof, or to enforce any covenant hereof without prejudice to the right of
Lender thereafter to enforce its rights under this Assignment. The rights of Lender under this
Assignment shall be separate, distinct and cumulative and none shall be given effect to the
exclusion of the others. No act of Lender shall be construed as an election to proceed under any
one provision herein to the exclusion of any other provision.

Section 3.5 Bankruptcy.

(a) Upon or during the continuation of a Default, Lender shall have the right to
proceed in its own name or in the name of Borrower in respect of any claim, suit, action or
proceeding relating to the rejection of any Lease, including, without limitation, the right
to file and prosecute, to the exclusion of Borrower, any proofs of claim, complaints,
motions, applications, notices and other documents, in any case in respect of the lessee
under such Lease under the Bankruptcy Code.

(b) If there shall be filed by or against Borrower a petition under the Bankruptcy
Code, and Borrower, as lessor under any Lease, shall determine to reject such Lease pursuant
to Section 365(a) of the Bankruptcy Code, then Borrower shall give Lender not less than ten
(10) days’ prior notice of the date on which Borrower shall apply to the bankruptcy court
for authority to reject the Lease. Lender shall have the right, but not the obligation, to
serve upon Borrower within such ten (10) day period a notice stating that (i) Lender demands
that Borrower assume and assign the Lease to Lender pursuant to Section 365 of the
Bankruptcy Code and (ii) Lender covenants to cure or provide adequate assurance of future
performance under the Lease. If Lender serves upon Borrower the notice described in the
preceding sentence, Borrower shall not seek to reject the Lease and shall comply with the
demand provided for in clause (i) of the preceding sentence within thirty (30) days after
the notice shall have been given, subject to the performance by Lender of the covenant
provided for in clause (ii) of the preceding sentence.

Section 3.6 Security Deposits. All security deposits of lessees, whether held in cash
or any other form, shall be treated by Borrower as trust funds, shall not be commingled with any
other funds of Borrower and, if cash, shall be deposited by Borrower in one or more segregated
accounts at such commercial or savings bank or banks as is reasonably satisfactory to Lender. Any
bond or other instrument which Borrower is permitted to hold in lieu of cash security deposits
under applicable legal requirements (a) shall be maintained in full force and effect unless
replaced by cash deposits as hereinabove described, (b) shall be issued by an entity reasonably
satisfactory to Lender, (c) shall, if permitted pursuant to legal requirements, name Lender as
payee or beneficiary thereunder (or at Lender’s option, subject to applicable Borrower
requirements, be fully assignable to Lender), and (d) shall, in all respects, comply with
applicable legal requirements and otherwise be reasonably satisfactory to Lender. Borrower shall,
upon request, provide Lender with evidence reasonably satisfactory to Lender of Borrower’s
compliance with the foregoing. Following the occurrence and during the continuance of any Default,
Borrower shall, upon Lender’s request, if permitted by applicable legal requirements, turn over to
Lender the security deposits (and any interest theretofore earned thereon) with respect to all or
any portion of the Property, to be held by Lender subject to the terms of the Leases.

ARTICLE 4

NO LIABILITY, FURTHER ASSURANCES

Section 4.1 No Liability of Lender. This Assignment shall not be construed to bind
Lender to the performance of any of the covenants, conditions or provisions contained in any Lease
or Lease Guaranty or otherwise impose any obligation upon Lender. Lender shall not be liable for
any loss sustained by Borrower resulting from Lender’s failure to let the Property after a Default
or from any other act or omission of Lender in managing the Property after a Default unless such
loss is caused by the gross negligence, willful misconduct and bad faith of Lender. Lender shall
not be obligated to perform or discharge any obligation, duty or liability under the Leases or any
Lease Guaranties or under or by reason of this Assignment and Borrower shall, and hereby agrees, to
indemnify, defend and hold Lender harmless from, any and all liability, loss or damage which may or
might be incurred under the Leases, any Lease Guaranties under or by reason of this Assignment and
from any and all claims and demands whatsoever, including the defense of any such claims or demands
which may be asserted against Lender by reason of any alleged obligations and undertakings on its
part to perform or discharge any of the terms, covenants or agreements contained in the Leases or
any Lease Guaranties. Should Lender incur any such liability, the amount thereof, including costs,
expenses and reasonable attorneys’ fees, shall be secured by this Assignment and by the Security
Instrument and the Other Security Documents and Borrower shall reimburse Lender therefor
immediately upon demand and upon the failure of Borrower so to do Lender may, at its option,
declare all sums secured by this Assignment and by the Security Instrument and the Other Security
Documents immediately due and payable. This Assignment shall not operate to place any obligation
or liability for the control, care, management or repair of the Property upon Lender, nor for the
carrying out of any of the terms and conditions of the Leases or any Lease Guaranties; nor shall it
operate to make Lender responsible or liable for any waste committed on the Property by the tenants
or any other parties, or for any dangerous or defective condition of the Property, including
without limitation the presence of any Hazardous Substances (as defined in the Security
Instrument), or for any negligence in the management, upkeep, repair or control of the Property
resulting in loss or injury or death to any tenant, licensee, employee or stranger.

Section 4.2 No Mortgagee in Possession. Nothing herein contained shall be construed
to consider Lender a mortgagee in possession in the absence of the taking of actual possession of
the Property by Lender. In the exercise of the powers herein granted Lender, no liability shall be
asserted or enforced against Lender, all such liability being expressly waived and released by
Borrower.

Section 4.3 Further Assurances. Borrower will, at the cost of Borrower, and without
expense to Lender, execute, acknowledge and deliver all and every such further acts, conveyances,
assignment, notices of assignments, transfers and assurances as Lender shall, from time to time,
require for the better assuring, conveying, assigning, transferring and confirming unto Lender the
property and rights hereby assigned or intended now or hereafter so to be, or which Borrower may be
or may hereafter become bound to convey or assign to Lender, or for carrying out the intention or
facilitating the performance of the terms of this Assignment or for filing, registering or
recording this Assignment and, on demand, will execute and deliver and hereby authorizes Lender to
execute in the name of Borrower to the extent Lender may lawfully do so, one or more financing
statements, chattel mortgages or comparable security instruments, to evidence more effectively the
lien and security interest hereof in and upon the Leases.

ARTICLE 5

MISCELLANEOUS PROVISIONS

Section 5.1 Conflict of Terms. In case of any conflict between the terms of this
Assignment and the terms of the Security Instrument, the terms of the Security Instrument shall
prevail.

Section 5.2 No Oral Change. This Assignment and any provisions hereof may not be
modified, amended, waived, extended, changed, discharged or terminated orally, or by any act or
failure to act on the part of Borrower or Lender, but only by an agreement in writing signed by the
party against whom the enforcement of any modification, amendment, waiver, extension, change,
discharge or termination is sought.

Section 5.3 Certain Definitions. Unless the context clearly indicates a contrary
intent or unless otherwise specifically provided herein, words used in this Assignment may be used
interchangeably in singular or plural form and the word “Borrower” shall mean “each Borrower and
any subsequent owner or owners of the Property or any part thereof or interest therein”, the word
“Lender” shall mean “Lender and any subsequent holder of the Note,” the word “Note” shall mean “the
Note and any other evidence of indebtedness secured by the Security Instrument,” the word “person”
shall include an individual, corporation, partnership, limited liability company, trust,
unincorporated association, government, governmental authority, and any other entity, the word
“Property” shall include any portion of the Property and any interest therein, the phrases
“attorneys’ fees” and “counsel fees” shall include any and all reasonable attorneys and paralegal
fees and disbursements, and the word “Debt” shall mean the principal balance of the Note with
interest thereon as provided in the Note and the Security Instrument and all other sums due
pursuant to the Note, the Security Instrument, this Assignment and the Other Security Documents;
whenever the context may require, any pronouns used herein shall include the corresponding
masculine, feminine or neuter forms, and the singular form of nouns and pronouns shall include the
plural and vice versa.

Section 5.4 Authority. Borrower represents and warrants that it has full power and
authority to execute and deliver this Assignment and the execution and delivery of this Assignment
has been duly authorized and does not conflict with or constitute a default under any law, judicial
order or other agreement affecting Borrower or the Property.

Section 5.5 Inapplicable Provisions. If any term, covenant or condition of this
Assignment is held to be invalid, illegal or unenforceable in any respect, this Assignment shall be
construed without such provision.

Section 5.6 Counterparts. This Assignment may be executed in several counterparts,
each of which counterparts shall be deemed an original instrument and all of which together shall
constitute a single Assignment.

Section 5.7 Choice of Law. THIS ASSIGNMENT SHALL BE GOVERNED, CONSTRUED, APPLIED AND
ENFORCED IN ACCORDANCE WITH THE LAWS OF THE STATE OF ILLINOIS, WITHOUT REGARD TO CONFLICTS OF LAW
PRINCIPLES, PROVIDED, HOWEVER, THAT TO THE EXTENT THE MANDATORY PROVISIONS OF THE LAWS OF ANOTHER
JURISDICTION RELATING TO (i) THE PERFECTION OR THE EFFECT OF PERFECTION OR NON-PERFECTION OF THE
SECURITY INTERESTS IN ANY OF THE PROPERTY, (ii) THE LIEN, ENCUMBRANCE OR OTHER INTEREST IN THE
PROPERTY GRANTED OR CONVEYED BY THIS ASSIGNMENT, OR (iii) THE AVAILABILITY OF AND PROCEDURES
RELATING TO ANY REMEDY HEREUNDER OR RELATED TO THIS ASSIGNMENT ARE REQUIRED TO BE GOVERNED BY SUCH
OTHER JURISDICTION’S LAWS, SUCH OTHER LAWS SHALL BE DEEMED TO GOVERN AND CONTROL.

Section 5.8 Notices. All notices required or permitted hereunder shall be given as
provided in the Security Instrument.

Section 5.9 Waiver of Trial by Jury. BORROWER HEREBY WAIVES, TO THE FULLEST EXTENT
PERMITTED BY LAW, THE RIGHT TO A TRIAL BY JURY IN ANY ACTION, PROCEEDING OR COUNTERCLAIM, WHETHER
IN CONTRACT, TORT OR OTHERWISE, RELATING DIRECTLY OR INDIRECTLY TO THE LOAN EVIDENCED BY THE NOTE,
THE APPLICATION FOR THE LOAN EVIDENCED BY THE NOTE, THIS ASSIGNMENT, THE NOTE, THE SECURITY
INSTRUMENT OR THE OTHER SECURITY DOCUMENTS OR ANY ACTS OR OMISSIONS OF LENDER, ITS OFFICERS,
EMPLOYEES, DIRECTORS OR AGENTS IN CONNECTION THEREWITH. THIS WAIVER IS KNOWINGLY, INTENTIONALLY
AND VOLUNTARILY MADE BY BORROWER AND BORROWER ACKNOWLEDGES THAT NO PERSON ACTING ON BEHALF OF
LENDER HAS MADE ANY REPRESENTATIONS OF FACT TO INDUCE THIS WAIVER OF TRIAL BY JURY OR IN ANY WAY TO
MODIFY OR NULLIFY ITS EFFECT. BORROWER FURTHER ACKNOWLEDGES THAT IT HAS BEEN REPRESENTED (OR HAS
HAD THE OPPORTUNITY TO BE REPRESENTED) IN CONNECTION WITH THIS ASSIGNMENT AND IN THE MAKING OF THIS
WAIVER BY INDEPENDENT LEGAL COUNSEL, SELECTED OF ITS OWN FREE WILL, AND IT HAS HAD THE OPPORTUNITY
TO DISCUSS THIS WAIVER WITH COUNSEL.

Section 5.10 Liability. If Borrower consists of more than one person, the obligations
and liabilities of each such person hereunder shall be joint and several. This Assignment shall be
binding upon and inure to the benefit of Borrower and Lender and their respective successors and
assigns forever.

Section 5.11 Headings, etc. The headings and captions of various paragraphs of this
Assignment are for convenience of reference only and are not to be construed as defining or
limiting, in any way, the scope or intent of the provisions hereof.

Section 5.12 Number and Gender. Whenever the context may require, any pronouns used
herein shall include the corresponding masculine, feminine or neuter forms, and the singular form
of nouns and pronouns shall include the plural and vice versa.

Section 5.13 Costs and Expenses of Borrower. Wherever pursuant to this Assignment it
is provided that Borrower pay any costs and expenses, such costs and expenses shall include, but
not be limited to, reasonable legal fees and disbursements of Lender, whether with respect to
retained firms, the reimbursement of the reasonable expenses for in-house staff or otherwise.

Section 5.14 Successors and Assigns. Borrower may not assign its rights under this
Assignment. Borrower hereby acknowledges and agrees that Lender may assign this Assignment without
Borrower’s consent. Subject to the foregoing, this Assignment shall be binding upon, and shall
inure to the benefit of, Borrower and Lender and their respective successors and assigns and any
subsequent owner of the Property.

THIS ASSIGNMENT, together with the covenants and warranties therein contained, shall inure to
the benefit of Lender and any subsequent holder of the Security Instrument and shall be binding
upon Borrower, its heirs, executors, administrators, successors and assigns and any subsequent
owner of the Property.

[THE REMAINDER OF THIS PAGE IS

INTENTIONALLY LEFT BLANK]

2

IN WITNESS WHEREOF, Borrower has executed this instrument as of the day and year first
above written.

	 
	 

	BORROWER:

	 	 	 
	NNN Lenox Medical, LLC, a Delaware limited liability company

	 
	 	 
	By:

	 	NNN Lenox Medical Member, LLC, a Delaware limited

liability company, its sole member
	 
	 	 
	By:

	 	Triple Net Properties, LLC, a Virginia limited liability

company, its sole member
	 
	 	 
	
 
	 	By: /s/ Richard Hutton
	
 
	 	 
	
 
	 	Name: Richard Hutton
	
 
	 	 
	
 
	 	Its: Executive Vice President
	
 
	 	 
	 
	 	 

3

STATE OF CALIFORNIA

COUNTY OF ORANGE

Before me, a Notary Public of the state and county mentioned, personally appeared Richard
Hutton, with whom I am personally acquainted (or proved to me on the basis of satisfactory
evidence), and who, upon oath, acknowledged himself/herself to be the Executive VP of Triple Net
Properties, LLC, a Virginia limited liability company, the sole member of NNN Lenox Medical Member,
LLC, a Delaware limited liability company, the sole member of NNN Lenox Medical, LLC, a Delaware
limited liability company, the within named bargainor, and that he/she as such Executive VP,
executed the foregoing instrument for the purposes therein contained, by personally signing the
name of the Triple Net Properties, LLC, the sole member of NNN Lenox Medical Member, LLC, a
Delaware limited liability company, the sole member of NNN Lenox Medical, LLC, by himself/herself
as Executive VP.

WITNESS my hand and seal, at office in (county) Orange, California (state), this 26th
day of December, 2006.

/s/ J. Hu

Notary Public

My Commission Expires: September 30, 2009.

[AFFIX NOTARY SEAL]

4Agreement regarding the cancellation of the Series A Preferred Stock of XA,
      Inc.

    
      

    

    Exhibit 10.49

    
 

    AGREEMENT
      REGARDING THE CANCELLATION OF 

    THE
      SERIES A PREFERRED STOCK OF XA, INC.

    

    This
      Agreement Regarding the Cancellation of the Series A Preferred Stock of XA,
      Inc.
      (the “Agreement”)
      is
      made and entered into this 24th day of January 2007, by and between XA,
      Inc.,
      a
      Nevada corporation (“XA”)
      and
Joseph
      Wagner,
      an
      individual and the President and Chief Executive Officer of XA and Jean
      Wilson,
      an
      individual and the Chief Operating Officer of XA (collectively the “Preferred
      Stock Holders”),
      each
      individually a “Party”
and
      collectively the “Parties.”

    

    W I T N E S S E T H:

    

    WHEREAS,
      the
      Preferred Stock Holders each hold one (1) share of XA’s Series A Preferred
      Stock, of which only two (2) shares are currently outstanding, which shares
      provide the Preferred Stock Holders the right to vote in aggregate an amount
      of
      common stock equal to fifty-one (51%) of XA’s total common stock on all
      shareholder matters (the “Series
      A Preferred Stock”);

    

    WHEREAS,
      XA
      previously entered into a Securities Purchase Agreement with certain third
      party
      purchasers to purchase an aggregate of $2,700,000 in 11% Senior Secured
      Convertible Notes (the “Funding”),
      whereby XA agreed to retire all of its Series A Preferred Stock for an aggregate
      of $1.00 (the “Retirement”),
      as a
      condition to XA entering into the Securities Purchase Agreement and receiving
      any funds from the third party purchasers; and

    

    WHEREAS,
      the
      Preferred Stock Holders are willing to agree to the Retirement of the Series
      A
      Preferred Stock.

    

    NOW,
      THEREFORE,
      in
      consideration for the promises and pledges contained below and other good and
      valuable consideration, which consideration XA and the Purchasers acknowledge
      receipt of, and the premises and the mutual covenants, agreements, and
      considerations herein contained, the Parties hereto agree as
      follows:

    

    
      	1.  	
              Retirement
                of the Series A Preferred
                Stock.

            

    

    

    
      	 	
              The
                Preferred Stock Holders agree to return certificates P-2 and P-3
                (the
                “Certificates”),
                each evidencing one (1) share of Series A Preferred Stock to XA,
                at the
                address below, for cancellation within five (5) days of the date
                of this
                Agreement first written above.

            

    

    

    
      	 	
              XA
                agrees to pay the Preferred Stock Holders an aggregate of $1.00,
                to be
                distributed equally to each of the Preferred Stock Holders in
                consideration for the Retirement, which funds XA agrees to provide
                to the
                Preferred Stock Holders within five (5) days of the date of this
                Agreement
                first written above (the “Payment”).

            

    

     

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    
 

    
      	 	
              XA
                agrees that it will receive valid consideration from the Retirement
                and
                the Preferred Stock Holders agree that they will receive valid
                consideration from the Payment and the
                Funding.

            

    

    

    
      	 	
                        
                2.

            	
              The
                Retirement.

            

    

    

    
      	 	
              The
                Preferred Stock Holders agree to send the Certificates evidencing
                the
                shares of Series A Preferred Stock to XA’s attorney at the following
                address for cancellation:

            

    

    

    The
      Loev
      Law Firm, Inc.

    6300
      West
      Loop South, Suite 280

    Bellaire,
      Texas 77401

    

    
      	 	
              The
                Preferred Stock Holders agree that once the Series A Preferred Stock
                shares are cancelled by XA and the Preferred Stock Holders receive
                the
                Payment, they will no longer have any rights to the Series A Preferred
                Stock nor will they retain any super majority voting
                rights.

            

    

    

              
      3.  Miscellaneous.

    

    (a) Assignment.
      All of
      the terms, provisions and conditions of this Agreement shall be binding upon
      and
      shall inure to the benefit of and be enforceable by the Parties hereto and
      their
      respective successors and permitted assigns. 

    

    (b) Applicable
      Law.
      This
      Agreement shall be construed in accordance with and governed by the laws of
      the
      State of Illinois, excluding any provision of this Agreement which would require
      the use of the laws of any other jurisdiction.

    

    (c) Entire
      Agreement, Amendments and Waivers.
      This
      Agreement constitutes the entire agreement of the Parties hereto and expressly
      supersedes all prior and contemporaneous understandings and commitments, whether
      written or oral, with respect to the subject matter hereof. No variations,
      modifications, changes or extensions of this Agreement or any other terms hereof
      shall be binding upon any Party hereto unless set forth in a document duly
      executed by such Party or an authorized agent or such Party. 

    

    (d)
       Waiver.
      No
      failure on the part of any Party to enforce any provisions of this Agreement
      will act as a waiver of the right to enforce that provision.

    

    (e) Section
      Headings.
      Section
      headings are for convenience only and shall not define or limit the provisions
      of this Agreement.

    

    (f) Effect
      of Facsimile and Photocopied Signatures.
      This
      Agreement may be executed in several counterparts, each of which is an original.
      It shall not be necessary in making proof of this Agreement or any counterpart
      hereof to produce or account for any of the other counterparts. A copy of this
      Agreement signed by one Party and faxed to another Party shall be deemed to
      have
      been executed and delivered by the signing Party as though an original. A
      photocopy of this Agreement shall be effective as an original for all
      purposes.

    
 

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

     

      This
      Agreement has been executed by the Parties on the date first written above,
      with
      an Effective Date as provided above.

    

    

    XA,
      INC.

    

    

    /s/
      Joseph Wagner

    Joseph
      Wagner

    Chief
      Executive Officer

    

    

    

    

    

    PREFERRED
      STOCK HOLDERS:

    

    

    /s/
      Joseph Wagner

    Joseph
      Wagner

    One
      Share
      of Series A Preferred Stock

    Represented
      by Certificate P-3

    

    

    /s/
      Jean Wilson

    Jean
      Wilson

    One
      Share
      of Series A Preferred Stock

    Represented
      by Certificate P-2

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00120-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00120-of-00352.parquet"}]]