(19)

(11)

EP 1 005 531 A2

(12)

(88) Date of publication A3: 27.05.1999 (43) Date of publication: 07.06.2000 Bulletin 2000/23 (21) Application number: 98936943.4 (22) Date of filing: 21.07.1998

(51) International Patent Classification (IPC)7: C12N 5/06, C12N 15/01, A61K 41/00 (86) International application number: PCT/US9815/067 (87) International publication number: WO 9903/976 (28.01.1999 Gazette 1999/04)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 21.07.1997 US 53599 P 20.07.1998 US 119707 (71) Applicant: Cerus Corporation Concord, CA 94520 (US)	(72) Inventors: GREENMAN, William, M. San Francisco, CA 94123 (US) GRASS, Joshua, A. Rochester, NY 14607 (US) TALIB, Sohel Redwood City, CA 94061 (US) STASSINOPOULOS, Adonis Dublin, CA 94568 (US) HEI, Derek, J. Concord, CA 94521 (US) HEARST, John, E. Berkeley, CA 94717 (US) (74) Representative: Goldin, Douglas Michael  J.A. KEMP & CO.14 South SquareGray's Inn London WC1R 5LX London WC1R 5LX (GB)