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(11)

EP 0 409 869 A1

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(43) Date of publication: 30.01.1991 Bulletin 1991/05 (21) Application number: 89904391.0 (22) Date of filing: 15.03.1989

(51) International Patent Classification (IPC):  A01H 5/ 00( . ) C07K 14/ 415( . ) C12N 15/ 09( . ) C12N 15/ 82( . ) A01H 5/ 10( . ) C12N 5/ 10( . ) C12N 15/ 29( . ) C12Q 1/ 68( . ) (86) International application number: PCT/US1989/000973 (87) International publication number: WO 1989/009267 (05.10.1989 Gazette 1989/24)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 29.03.1988 US 19880174744 21.09.1988 US 19880247185 (71) Applicants: E.I. DU PONT DE NEMOURS AND COMPANY Wilmington Delaware 19898 (US) STATE OF OREGON BY AND THROUGH THE OREGON STATE BOARD OF HIGHER EDUCATION ON BEHALF OF OREGON STATE UNIVERSITY Corvallis, Oregon 97331-2140 (US)	(72) Inventors: LITTS, James, Cooper Davis, CA 95616 (US) MARCOTTE, William, Richard, Jr. Wilmington, DE 19808 (US) QUATRANO, Ralph, Stephen Wilmington, DE 19806 (US) (74) Representative: Jones, Alan John, et al  CARPMAELS & RANSFORD 43 Bloomsbury Square London, WC1A 2RA London, WC1A 2RA (GB)