(19)

(11)

EP 0 760 004 A1

(12)

(43) Date of publication: 05.03.1997 Bulletin 1997/10 (21) Application number: 95919513.0 (22) Date of filing: 19.05.1995

(51) International Patent Classification (IPC):  C12M 1/ 18( . ) C12Q 1/ 04( . ) C12M 1/ 34( . ) (86) International application number: PCT/GB1995/001140 (87) International publication number: WO 1995/032303 (30.11.1995 Gazette 1995/51)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI NL PT SE (30) Priority: 20.05.1994 GB 19940010136 (71) Applicant: MINISTER OF AGRICULTURE, FISHERIES AND FOOD IN HER BRITANNIC MAJESTY'S GOV. OF THE U.K. OF GREAT BRITAIN AND NORTHERN IRELAND London SW1A 2HH (GB)	(72) Inventor: DAVIES, Robert, Harold Addleston, Surrey KT15 3NB (GB) (74) Representative: Skelton, Stephen Richard  D/IPR1, 7C/2/A31, MOD(PE) Abbey Wood, P.O. Box 702 Bristol BS12 7DU Bristol BS12 7DU (GB)