(19)

(11)

EP 0 609 379 A1

(12)

(43) Date of publication: 10.08.1994 Bulletin 1994/32 (21) Application number: 92923231.0 (22) Date of filing: 22.10.1992

(51) International Patent Classification (IPC):  C12N 5/ 02( . ) A61K 35/ 14( . ) A01N 1/ 02( . ) A61K 35/ 28( . ) (86) International application number: PCT/US1992/009023 (87) International publication number: WO 1993/007745 (29.04.1993 Gazette 1993/11)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL SE (30) Priority: 23.10.1991 US 19910780487 (71) Applicant: CELLPRO INCORPORATED Bothell, WA 98021 (US)	(72) Inventors: PETERSON, Dale, R. Bothell, WA 89012 (US) BERENSON, Ronald, J. Mercer Island, WA 98040 (US) GOFFE, Randal, A. Bothell, WA 98021 (US) HEIMFELD, Shelly Woodinville, WA 98072 (US) THOMPSON, Penny Snohomish, WA 98290 (US) (74) Representative: Gowshall, Jonathan Vallance  FORRESTER & BOEHMERT Franz-Joseph-Strasse 38 D-80801 München D-80801 München (DE)