(19)

(11)

EP 0 544 861 A1

(12)

(43) Date of publication: 09.06.1993 Bulletin 1993/23 (21) Application number: 92911917.0 (22) Date of filing: 29.04.1992

(51) International Patent Classification (IPC):  C07K 7/ 06( . ) C07K 14/ 00( . ) C07K 16/ 00( . ) G01N 33/ 576( . ) C07K 7/ 08( . ) C07K 14/ 18( . ) G01N 33/ 53( . ) (86) International application number: PCT/US1992/003635 (87) International publication number: WO 1992/022571 (23.12.1992 Gazette 1992/32)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB IT LI NL SE (30) Priority: 13.06.1991 US 19910714471 20.06.1991 US 19910718052 (71) Applicant: BAXTER DIAGNOSTICS INC. Deerfield, IL 60015 (US)	(72) Inventors: LEAHY, David, C. Cary, IL 60013 (US) TODD, John, A. Walnut Creek, CA 94596 (US) JOLLEY, Michael, E. Round Lake, IL 60073 (US) (74) Representative: MacGregor, Gordon, et al  ERIC POTTER CLARKSON St. Mary's Court St. Mary's Gate Nottingham, NG1 1LE Nottingham, NG1 1LE (GB)