(19)

(11)

EP 0 833 926 A1

(12)

(43) Date of publication: 08.04.1998 Bulletin 1998/15 (21) Application number: 96917959.0 (22) Date of filing: 04.06.1996

(51) International Patent Classification (IPC):  C12N 15/ 09( . ) C12N 9/ 16( . ) C12N 1/ 21( . ) C12N 15/ 55( . ) (86) International application number: PCT/US1996/008509 (87) International publication number: WO 1996/040938 (19.12.1996 Gazette 1997/03)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE Designated Extension States: AL LT LV SI (30) Priority: 07.06.1995 US 19950481179 (71) Applicant: American Cyanamid Company Madison, New Jersey 07940-0874 (US)	(72) Inventors: LOTVIN, Jason, Arnold Union, NJ 07083 (US) KHANDKE, Kiran, Manohar Nanuet, NY 10954 (US) RUPPEN, Mark, Edward Garnerville, NY 10923 (US) (74) Representative: Walters, Philip Bernard William  Wyeth Laboratories, Patents & Trade Marks Department, Huntercombe Lane South, Taplow Maidenhead, Berkshire SL6 0PH Maidenhead, Berkshire SL6 0PH (GB)