(19)

(11)

EP 0 862 365 A2

(12)

(43) Date of publication: 09.09.1998 Bulletin 1998/37 (21) Application number: 96940432.0 (22) Date of filing: 14.11.1996

(51) International Patent Classification (IPC):  A01N 25/ 28( . ) A01N 57/ 16( . ) A01N 57/ 14( . ) (86) International application number: PCT/US1996/018231 (87) International publication number: WO 1997/018705 (29.05.1997 Gazette 1997/23)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 17.11.1995 US 19950560033 (71) Applicants: Schering-Plough Animal Health Corporation Union, NJ 07083-7143 (US) Zeneca Limited Richmond, CA 94804-0023 (US)	(72) Inventors: MEYER, Jeffery, Alan Mundelein, IL 60060 (US) PENNINGTON, Robert, G. Rayville, MO 64084 (US) SCHER, Herbert, Benson Moraga, CA 94556 (US) (74) Representative: Harrison, Michael Charles  Albihns GmbH, Grasserstrasse 10 80339 München 80339 München (DE)