(19)

(11)

EP 0 533 772 A1

(12)

(43) Date of publication: 31.03.1993 Bulletin 1993/13 (21) Application number: 91911125.0 (22) Date of filing: 07.06.1991

(51) International Patent Classification (IPC):  C12M 1/ 34( . ) G01N 33/ 569( . ) C12Q 1/ 04( . ) (86) International application number: PCT/AU1991/000247 (87) International publication number: WO 1991/019003 (12.12.1991 Gazette 1991/28)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU NL SE (30) Priority: 08.06.1990 AU 19900000566 (71) Applicant: BIOTECH AUSTRALIA PTY. LIMITED Roseville, NSW 2069 (AU)	(72) Inventors: FARR, Lester, John Birkdale, QLD 4159 (AU) ATRACHE, Vincent, Habib St Ives, NSW 2075 (AU) BRAID, Geoffrey, Harold Balgowlah Heights, NSW 2093 (AU) HARRISON, David, Ernest, Forester Turramurra, NSW 2074 (AU) (74) Representative: Bannerman, David Gardner, et al  Withers & Rogers 4 Dyer's Buildings Holborn London, EC1N 2JT London, EC1N 2JT (GB)