(19)

(11)

EP 0 055 742 A1

(12)

(43) Date of publication: 14.07.1982 Bulletin 1982/28 (21) Application number: 81901998.0 (22) Date of filing: 07.07.1981

(51) International Patent Classification (IPC):  C12N 15/ 00( . ) C12N 15/ 09( . ) C12P 21/ 00( . ) C12N 5/ 00( . ) C12N 15/ 85( . ) (86) International application number: PCT/US1981/000911 (87) International publication number: WO 1982/000158 (21.01.1982 Gazette 1982/03)

(84) Designated Contracting States: AT CH DE FR GB LI LU NL SE (30) Priority: 08.07.1980 US 19800166843 (71) Applicant: THE SALK INSTITUTE FOR BIOLOGICAL STUDIES San Diego, CA 92138 (US)	(72) Inventor: WAHL, Geoffrey M. San Diego, CA 92122 (US) (74) Representative: Lawrence, Malcolm Graham, et al  BROOKES & MARTIN High Holborn House 52/54 High Holborn London WC1V 6SE London WC1V 6SE (GB)