(19)

(11)

EP 0 222 781 A1

(12)

(43) Date of publication: 27.05.1987 Bulletin 1987/22 (21) Application number: 86902098.0 (22) Date of filing: 27.02.1986

(51) International Patent Classification (IPC):  G01N 33/ 543( . ) G01N 33/ 571( . ) G01N 33/ 58( . ) G01N 33/ 569( . ) G01N 33/ 576( . ) G01N 33/ 80( . ) (86) International application number: PCT/US1986/000407 (87) International publication number: WO 1986/007463 (18.12.1986 Gazette 1986/27)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 03.06.1985 US 19850740413 (71) Applicant: AMERICAN NATIONAL RED CROSS Washington, DC 20006 (US)	(72) Inventor: NATH, Nrapendra Rockville, MD 20855 (US)