Exhibit 3.52

CONSENT TO USE OF SIMILAR NAME
DSCB: 17-3 (Rev 91)

Pursuant to 19 Pa. Code § 17.3 (relating to use of a confusingly similar name) the undersigned association, desiring to consent to the use by another association of a name which is confusingly similar to its name, hereby certifies that:

1. The name of the association executing this Consent to Use of Similar Name is : Brandywine TB I, L.L.C.

2. The (a) address of this association’s current registered office in this Commonwealth or (b) name of its commercial registered office provider and the county of venue is (the Department is hereby authorized to correct the following information to conform to the records of the Department):

(a)	16 Campus Boulevard, Suite 150	Newtown Square	PA	19073	Delaware
	Number and Street	City	State	Zip	County
(b)	c/o:

Name of Commercial Registered Office Provider County

	For an association represented by a commercial registered office provider, the county in (b) shall be deemed the county in which the association is located for venue and official publication purposes.
3.	The date of its incorporation or other organization is:   October 31, 1997
4.	The statute under which it was incorporated or otherwise organised is : 15 Pa C.S. Section 8511
5.	The association(s) entitled to the benefit of this Consent to Use of Similar Name is (are):
	Brandywine TB VI, L.P.
	Brandywine TB VI, L.L.C.
6.	A check in this box indicates that the association executing this Consent to Use of Similar Name is the parent or prime affiliate of a group of associations using the same name with geographic or other designations, and that such association is authorized to and does hereby act on behalf of all such affiliated associations, including the following (see 19 Pa. Code § 17.3(c)(8)):
	IN TESTIMONY WHEREOF, the undersigned association has caused this consent to be signed by a duly authorized officer thereof this 15th day of July 1998

Brandywine TB I, L.L.C.
	(Name of Association)
BY:	/s/ Brad A. Molotsky
	(Signature)
TITLE:	Brad A. Molotsky, Secretary

CONSENT TO USE OF SIMILAR NAME
DSCB: 17-3 (Rev 91)

Pursuant to 19 Pa. Code § 17.3 (relating to use of a confusingly similar name) the undersigned association, desiring to consent to the use by another association of a name which is confusingly similar to its name, hereby certifies that:

1. The name of the association executing this Consent to Use of Similar Name is : Brandywine TB I, L.P.

2. The (a) address of this association’s current registered office in this Commonwealth or (b) name of its commercial registered office provider and the county of venue is (the Department is hereby authorized to correct the following information to conform to the records of the Department):

(a)	16 Campus Boulevard, Suite 150	Newtown Square	PA	19073	Delaware
	Number and Street	City	State	Zip	County
(b)	c/o:

Name of Commercial Registered Office Provider County

	For an association represented by a commercial registered office provider, the county in (b) shall be deemed the county in which the association is located for venue and official publication purposes.
3.	The date of its incorporation or other organisation is:   October 31, 1997
4.	The statute under which it was incorporated or otherwise organized is : 15 Pa C.S. Section 8511
5.	The association(s) entitled to the benefit of this Consent to Use of Similar Name is (are):
	Brandywine TB VI, L.L.C.
	Brandywine TB VI, L.P.
6.	A check in this box indicates that the association executing this Consent to Use of Similar Name is the parent or prime affiliate of a group of associations using the same name with geographic or other designations, and that such association is authorized to and does hereby act on behalf of all such affiliated associations, including the following (see 19 Pa. Code § 17.3(c)(8)):
	IN TESTIMONY WHEREOF, the undersigned association has caused this consent to be signed by a duly authorized officer thereof this 15th day of July 1998

Brandywine TB I, L.P.
By:	Brandywine TB I, L.L.C., General Partner
	(Name of Association)
By:	/s/ Brad A. Molotsky
	(Signature)
Title:	Brad A. Molotsky, Secretary

Microfilm Number_________	Filed with the Department of State on JULY 16 1998
Entity Number 2827110	XXXXXX
	Secretary of the Commonwealth

CERTIFICATE OF LIMITED PARTNERSHIP
DSCB:15-8511 (Rev 91)

In compliance with the requirements of 15 Pa.C.S. § 8511 (relating to certificate of limited partnership), the undersigned, desiring to form a limited partnership, hereby certifies that:

1. The name of the limited partnership is: Brandywine TB VI, L.P.

2. The (a) address of this limited partnership’s initial registered office in this Commonwealth or (b) name of its commercial registered office provider and the county of venue is:

(a) 16 Campus Boulevard, Suite 150                  Newtown Square          PA                 19073              Delaware

Number and Street                                          City                                 State              Zip                  County

(b) c/o:

Name of Commercial Registered Office Provider County

For a limited partnership represented by a commercial registered office provider, the county in (b) shall be deemed the county in which the limited partnership is located for venue and official publication purposes.

3. The name and business address of each general partner of the partnership is:

               Name                                                                                                   Address          

Brandywine TB VI, L.L.C.                                                                               16 Campus Boulevard, Suite 150

                                                                                                                            Newtown Square, PA 19073

4. (Check, and if appropriate complete, one of the following):

The formation of the limited partnership shall be effective upon filing this Certificate of Limited Partnership in the Department of State.

The formation of the limited partnership shall be effective on:                        at                      

	Date                  Hour
5.	The specified effective date if any, is:              N/A
	month          day          year        hour, if any

DBCB:15-8511 (Rev 91)-2

IN TESTIMONY WHEREOF, the undersigned general partner(s) of the limited partnership has (have) executed this Certificate of Limited Partnership this 15th day of July, 1998.

By:	Brandywine TB VI, L.L.C.
By:	/s/ Brad A. Molotsky
	(Signature)	(Signature)
	Brad A. Molotsky, Secretary
	(Signature)	(Signature)

PENNSYLVANIA DEPARTMENT OF STATE CORPORATION BUREAU
Certificate of Amendment-Domestic (15 Pa C S)
Entity Number
			Limited Partnership (§ 8512)
			Limited Liability Company (§ 8951)
Name	PEPPER HAMILTON LLP			Document will be returned to the name and address you enter to the left.
Address	200 ONE KEYSTONE PLAZA NORTH FRONT AND MARKET STREETS P.O. BOX 1181
	City	State	Zip Code
	HARRISBURG,	PA	17108-1181

Fee: $52	Filed in the Department of State on Jun 06 2002
	XXXXXX
	ACTING Secretary of the Commonwealth

In compliance with the requirements of the applicable provisions (relating to certificate of amendment), the undersigned, desiring to amend its Certificate of Limited Partnership/Organization, hereby certifies that:

1. The name of the limited partnership limited liability company is:
Brandywine TB VI, L.P.

2. The date of filing of the original Certificate of Limited Partnership/Organization:
July 16, 1998

3. Check and if appropriate complete one of the following:

	The amendment adopted by the limited partnership/limited liability company, set forth in full, is as follows:
	The amendment adopted by the limited partnership/limited liability company is set forth in full in Exhibit A attached hereto and made a part hereof.

4. Check and if appropriate complete one of the following:

The amendment shall be effective upon filing this Certificate of Amendment in the Department of State.

	The amendment shall be effective on _______ at ______
	Date            Hour

5. Check if the amendment restates the Certificate of Limited Partnership/Organization:

The restated Certificate of Limited Patnership/Organization supersedes the original Certificate of Limited Partnership Organization and all previous amendments thereto.

IN TESTIMONY WHEREOF, the undersigned limited partnership/limited liability company has caused this Certificate of Amendment to be executed this

4th day of June 2002



Brandywine TB VI, L.P.

Name of Limited Partnership/Limited Liability Company

/s/ Brad A. Molotsky

 Signature

Secretary of Brandywine TB VI, LLC.,

                                                                Title General Partner

EXHIBIT A

TO CERTIFICATE OF AMENDMENT

BRANDYWINE TB VI, L.P.

Article 4 of the Certificate of Limited Partnership shall be amended, so that, as amended, Article 4 shall read as follows:

“Article 4. The address of this limited partnership’s registered office in this Commonwealth is: 401 Plymouth Road, Suite 500, Plymouth Meeting, PA 19462, Montgomery County.”

Article 6 of the Certificate of Limited Partnership shall be amended, so that, as amended, Article 6 shall read as follows:

“Article 6. The name and business address of each general partner is: Brandywine TB IV, L.L.C. 401 Plymouth Road, Suite 500, Plymouth Meeting, PA 19462, Montgomery County.”

Article 7 of the Certificate of Limited Partnership shall be amended, so that, as amended, Article 7 shall read as follows:

“Article 7. The address of the office at which is kept a list of the names and addresses of the limited partners and their capital contributions is: 401 Plymouth Road, Suite 500, Plymouth Meeting, PA 19462, Montgomery County.”