Revocation of Attorney/Domestic Representative and/or Appointment of Attorney/Domestic Representative

---

The table below presents the data as entered.

Input Field	Entered
SERIAL NUMBER	76248522
REGISTRATION NUMBER	2661986
LAW OFFICE ASSIGNED	LAW OFFICE 105
ATTORNEY DOCKET NUMBER	023542-203,204,205,118,220,228,235
MARK SECTION
MARK	SIFT (SEQUENCE IDENTIFICATION USING FILTERING TECHNOLOGIES) (stylized and/or with design)
ATTORNEY SECTION
ORIGINAL ADDRESS	GREGORY T. PLETTA ERAGEN BIOSCIENCES, INC. ERA-TM009 US 918 DEMING WAY STE 201 MADISON WI 53717-1944 (608) 662-9003 (608) 662-9000 gpletta@eragen.com
CORRESPONDENCE SECTION
ORIGINAL ADDRESS	GREGORY T. PLETTA ERAGEN BIOSCIENCES, INC. ERA-TM009 US 918 DEMING WAY STE 201 MADISON WI 53717-1944 (608) 662-9003 (608) 662-9000 gpletta@eragen.com
NEW ATTORNEY ADDRESS
STATEMENT TEXT	By submission of this request, the undersigned REVOKES the power of attorney currently of record, as listed above, and hereby APPOINTS the following new attorney:
NAME	Mark A. Kassel
FIRM NAME	Foley & Lardner LLP
STREET	150 East Gilman Street
CITY	Madison
STATE	Wisconsin
COUNTRY	United States
POSTAL/ZIP CODE	53703
PHONE	(608)258-4272
FAX	(608)258-4258
ATTORNEY DOCKET NUMBER	023542-203,204,205,118,220,228,235
NEW CORRESPONDENCE ADDRESS
NAME	Mark A. Kassel
FIRM NAME	Foley & Lardner LLP
STREET	150 East Gilman Street
CITY	Madison
STATE	Wisconsin
COUNTRY	United States
POSTAL/ZIP CODE	53703
PHONE	(608)258-4272
FAX	(608)258-4258
SIGNATURE SECTION
SIGNATURE	/Slava Elagin/
SIGNATORY NAME	Slava Elagin
SIGNATORY DATE	06/11/2007
SIGNATORY POSITION	Vice-President, Product Development
FILING INFORMATION SECTION
SUBMIT DATE	Mon Jun 11 17:46:09 EDT 2007
TEAS STAMP	USPTO/RAA-XXX.XX.XX.XXX-2 0070611174609395089-76243 229-3602a83ae90557f8efd20 9056d379a4275b-N/A-N/A-20 070611164043434758