(19)

(11)

EP 0 391 963 A1

(12)

(43) Date of publication: 17.10.1990 Bulletin 1990/42 (21) Application number: 89900855.0 (22) Date of filing: 09.12.1988

(51) International Patent Classification (IPC):  G01N 33/ 53( . ) G01N 33/ 543( . ) (86) International application number: PCT/GB1988/001087 (87) International publication number: WO 1989/005454 (15.06.1989 Gazette 1989/13)

(84) Designated Contracting States: DE FR GB IT (30) Priority: 11.12.1987 GB 19870029002 (71) Applicant: NOVO BIOLABS LIMITED Cambridge CB4 1XG (GB)	(72) Inventor: CARDOSI, Marco, Fabio Cranfield Bedford MK42 8RB (GB) (74) Representative: Raynor, John, et al  W.H. Beck, Greener & Co 7 Stone Buildings Lincoln's Inn London WC2A 3SZ London WC2A 3SZ (GB)