(19)

(11)

EP 0 538 299 A1

(12)

(43) Date of publication: 28.04.1993 Bulletin 1993/17 (21) Application number: 91912293.0 (22) Date of filing: 05.07.1991

(51) International Patent Classification (IPC):  A61K 39/ 00( . ) A61K 39/ 27( . ) C12N 7/ 00( . ) C12N 15/ 09( . ) A61K 39/ 245( . ) A61P 31/ 12( . ) C12N 9/ 12( . ) C12N 15/ 869( . ) (86) International application number: PCT/GB1991/001100 (87) International publication number: WO 1992/001045 (23.01.1992 Gazette 1992/03)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU NL SE (30) Priority: 06.07.1990 GB 19900014951 (71) Applicants: THE UNIVERSITY COURT OF THE UNIVERSITY OF GLASGOW Glasgow G12 8QQ (GB) EQUINE VIROLOGY RESEARCH FOUNDATION Newmarket, Suffolk CSB8 8JL (GB)	(72) Inventors: ONIONS, David Edward, Dpt. of Veterinary Pathology Bearsden, Glasgow G61 1Q61 1QH (GB) NICOLSON, Lesley, Dpt. of Veterinary Pathology Bearsden, Glasgow G61 1QH H (GB) (74) Representative: Horner, Martin Grenville, et al  Cruikshank & Fairweather 19 Royal Exchange Square Glasgow G1 3AE Scotland Glasgow G1 3AE Scotland (GB)