(19)

(11)

EP 0 635 131 A1

(12)

(43) Date of publication: 25.01.1995 Bulletin 1995/04 (21) Application number: 94906296.0 (22) Date of filing: 10.02.1994

(51) International Patent Classification (IPC):  G01N 15/ 04( . ) G01N 33/ 49( . ) G01N 33/ 487( . ) (86) International application number: PCT/GB1994/000271 (87) International publication number: WO 1994/018557 (18.08.1994 Gazette 1994/19)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 11.02.1993 GB 19930002673 (71) Applicant: ZYNOCYTE LIMITED Glasgow G61 1QH (GB)	(72) Inventors: CLAMPITT, Roger Hertfordshire HP1 3DD (GB) HAZELWOOD, Stephen Glasgow G14 9QD (GB) MACDONALD, Donald, Wilson Glasgow G20 6AT (GB) (74) Representative: Pattullo, Norman, et al  Murgitroyd and Company 373 Scotland Street Glasgow G5 8QA Glasgow G5 8QA (GB)