(19)

(11)

EP 0 880 593 A1

(12)

(43) Date of publication: 02.12.1998 Bulletin 1998/49 (21) Application number: 97903457.0 (22) Date of filing: 14.02.1997

(51) International Patent Classification (IPC):  A01H 5/ 00( . ) C12N 15/ 09( . ) C12N 5/ 10( . ) C12N 15/ 82( . ) (86) International application number: PCT/GB1997/000406 (87) International publication number: WO 1997/030164 (21.08.1997 Gazette 1997/36)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 14.02.1996 GB 19960003069 (71) Applicant: BTG INTERNATIONAL LIMITED London EC4M 7SB (GB)	(72) Inventors: HASELOFF, James Phillip Comberton, Cambridgeshire CB3 7ED (GB) HODGE, Sarah Cambridge CB2 1HL (GB) (74) Representative: Dolan, Anthony Patrick  British Technology Group 10 Fleet Place London EC4M 7SB London EC4M 7SB (GB)