(19)

(11)

EP 0 729 581 A1

(12)

(43) Date of publication: 04.09.1996 Bulletin 1996/36 (21) Application number: 95901524.0 (22) Date of filing: 21.11.1994

(51) International Patent Classification (IPC):  G01N 33/ 68( . ) (86) International application number: PCT/GB1994/002559 (87) International publication number: WO 1995/014234 (26.05.1995 Gazette 1995/22)

(84) Designated Contracting States: CH DE FR GB IT LI NL (30) Priority: 19.11.1993 GB 19930023826 (71) Applicant: ROYAL POSTGRADUATE MEDICAL SCHOOL London W12 0NN (GB)	(72) Inventors: PEPYS, Mark, Brian, Immu. Med. Unit Du Cane Road, London W12 0NN (GB) HAWKINS, Philip, Nigel, Immu. Med. Unit Du Cane Road, London W12 0NN (GB) (74) Representative: Silveston, Judith, et al  ABEL & IMRAY Northumberland House 303-306 High Holborn London, WC1V 7LH London, WC1V 7LH (GB)