Exhibit 25.1

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM T-1

STATEMENT OF ELIGIBILITY UNDER

THE TRUST INDENTURE ACT OF 1939 OF A

CORPORATION DESIGNATED TO ACT AS TRUSTEE

Check if an Application to Determine Eligibility of

a Trustee Pursuant to Section 305(b)(2)

U.S. BANK NATIONAL ASSOCIATION

(Exact name of Trustee as specified in its charter)

31-0841368

I.R.S. Employer Identification No.

800 Nicollet Mall Minneapolis, Minnesota	55402
(Address of principal executive offices)	(Zip Code)

Carolyn Whalen

U.S. Bank National Association

1420 5^th Avenue, 7^th Floor, PD-WA-T7CT

Seattle, WA 98101

(206) 344-4678

(Name, address and telephone number of agent for service)

Xcyte Therapies, Inc.

(Issuer with respect to the Securities)

Delaware	91-1707622
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

1124 Columbia Street, Suite 130 Seattle, Washington	98104
(Address of Principal Executive Offices)	(Zip Code)

____% Convertible Subordinate Debentures

(Title of the Indenture Securities)

FORM T-1

Item 1. GENERAL INFORMATION. Furnish the following information as to the Trustee.

a) Name and address of each examining or supervising authority to which it is subject.

Comptroller of the Currency

Washington, D.C.

b) Whether it is authorized to exercise corporate trust powers.

Yes

Item 2. AFFILIATIONS WITH OBLIGOR. If the obligor is an affiliate of the Trustee, describe each such affiliation.

None

Items 3-15 Items 3-15 are not applicable because to the best of the Trustee’s knowledge, the obligor is not in default under any Indenture for which the Trustee acts as Trustee.

Item 16. LIST OF EXHIBITS: List below all exhibits filed as a part of this statement of eligibility and qualification.

1. A copy of the Articles of Association of the Trustee.*

2. A copy of the certificate of authority of the Trustee to commence business.*

3. A copy of the certificate of authority of the Trustee to exercise corporate trust powers.*

4. A copy of the existing bylaws of the Trustee.*

5. A copy of each Indenture referred to in Item 4. Not applicable.

6. The consent of the Trustee required by Section 321(b) of the Trust Indenture Act of 1939, attached as Exhibit 6.

7. Report of Condition of the Trustee as of March 31, 2004, published pursuant to law or the requirements of its supervising or examining authority, attached as Exhibit 7.

* Incorporated by reference to Registration Number 333-67188.

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NOTE

The answers to this statement insofar as such answers relate to what persons have been underwriters for any securities of the obligors within three years prior to the date of filing this statement, or what persons are owners of 10% or more of the voting securities of the obligors, or affiliates, are based upon information furnished to the Trustee by the obligors. While the Trustee has no reason to doubt the accuracy of any such information, it cannot accept any responsibility therefor.

SIGNATURE

Pursuant to the requirements of the Trust Indenture Act of 1939, as amended, the Trustee, U.S. BANK NATIONAL ASSOCIATION, a national banking association organized and existing under the laws of the United States of America, has duly caused this statement of eligibility and qualification to be signed on its behalf by the undersigned, thereunto duly authorized, all in the City of St. Paul, State of Minnesota on the 14th of September, 2004.

U.S. BANK NATIONAL ASSOCIATION
By:	/s/ Carolyn Whalen
	Carolyn Whalen
	Vice President

By:	/s/ Sherrie L. Pantle
	Sherrie L. Pantle
	Vice President

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Exhibit 6

CONSENT

In accordance with Section 321(b) of the Trust Indenture Act of 1939, the undersigned, U.S. BANK NATIONAL ASSOCIATION hereby consents that reports of examination of the undersigned by Federal, State, Territorial or District authorities may be furnished by such authorities to the Securities and Exchange Commission upon its request therefor.

Dated: September 14, 2004

U.S. BANK NATIONAL ASSOCIATION
By:	/s/ Carolyn Whalen
	Carolyn Whalen
	Vice President

By:	/s/ Sherrie L. Pantle
	Sherrie L. Pantle
	Vice President

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Exhibit 7

U.S. Bank National Association

Statement of Financial Condition

As of 6/30/2004

($000’s)

	6/30/2004
Assets
Cash and Due From Depository Institutions	$	7,475,658
Federal Reserve Stock		0
Securities		39,934,622
Federal Funds		2,663,649
Loans & Lease Financing Receivables		119,013,580
Fixed Assets		1,844,577
Intangible Assets		10,112,137
Other Assets		8,692,406
Total Assets	$	189,736,629
Liabilities
Deposits	$	126,260,502
Fed Funds		7,577,969
Treasury Demand Notes		0
Trading Liabilities		123,543
Other Borrowed Money		24,852,349
Acceptances		169,141
Subordinated Notes and Debentures		5,469,689
Other Liabilities		5,465,553
Total Liabilities	$	169,918,746
Equity
Minority Interest in Subsidiaries	$	1,009,877
Common and Preferred Stock		18,200
Surplus		11,792,288
Undivided Profits		6,997,518
Total Equity Capital	$	19,817,883
Total Liabilities and Equity Capital	$	189,736,629

To the best of the undersigned’s determination, as of the date hereof, the above financial information is true and correct.

U.S. Bank National Association

By:	/s/ Carolyn Whalen
	Vice President
Date:	October 6, 2004

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