CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM Board of Directors and Stockholders TECHNE Corporation Minneapolis, Minnesota We consent to the incorporation by reference in the Registration Statements (No. 33-42992, 33-49160, 33-86728, 33-86732, 333-14211, 333- 37263, 333-88885, and 333-4992) on Form S-8 of TECHNE Corporation of our reports dated August 10, 2004, with respect to the consolidated balance sheets of TECHNE Corporation as of June 30, 2004 and 2003, and the related consolidated statements of earnings, stockholders' equity and cash flows for the years then ended, and the related financial statement schedule for the years ended June 30, 2004 and, which reports appear in the June 30, 2004, annual report on Form 10-K of TECHNE Corporation. /s/ KPMG LLP Minneapolis, Minnesota September 10, 2004