(19)

(11)

EP 0 603 371 A1

(12)

(43) Date of publication: 29.06.1994 Bulletin 1994/26 (21) Application number: 93914862.0 (22) Date of filing: 01.07.1993

(51) International Patent Classification (IPC):  C12N 9/ 02( . ) C12N 15/ 82( . ) C12N 15/ 53( . ) C12P 7/ 64( . ) (86) International application number: PCT/GB1993/001385 (87) International publication number: WO 1994/001565 (20.01.1994 Gazette 1994/03)

(84) Designated Contracting States: AT DE DK FR GB SE (30) Priority: 01.07.1992 GB 19920013969 (71) Applicant: THE MINISTER OF AGRICULTURE, FISHERIES AND FOOD IN HER BRITANNIC MAJESTY'S GOVERNMENT OF THE UNITED KINGDOM OF GREAT BRITAIN London SW1A 2HH (GB)	(72) Inventors: MURPHY, Denis Joseph Norwich, Norfolk NR2 3NG (GB) FAIRBAIRN, David James Norwich, Norfolk NR7 2HG (GB) SLOCOMBE, Stephen Peter Norwich, Norfolk NR3 3EH (GB) (74) Representative: Lockwood, Peter Brian, et al  Ministry of Defence (PE) Directorate of Intellectual Property Rights Room 2002, Empress State Building Lillie Road London SW6 1TR London SW6 1TR (GB)