(19)

(11)

EP 0 786 013 A1

(12)

(43) Date of publication: 30.07.1997 Bulletin 1997/31 (21) Application number: 95933543.0 (22) Date of filing: 12.10.1995

(51) International Patent Classification (IPC):  C12Q 1/ 68( . ) (86) International application number: PCT/GB1995/002418 (87) International publication number: WO 1996/012038 (25.04.1996 Gazette 1996/18)

(84) Designated Contracting States: DE DK FR GB IE NL (30) Priority: 14.10.1994 GB 19940020774 13.09.1995 GB 19950018661 (71) Applicant: The University of Wales, Aberystwyth Aberystwyth, Dyfed SY23 3DA (GB)	(72) Inventor: YOUNG, Michael Dyfed SY23 4PG (GB) (74) Representative: Austin, Hedley William  Urquhart-Dykes & Lord Alexandra House 1 Alexandra Road Swansea West Glamorgan SA1 5ED Swansea West Glamorgan SA1 5ED (GB)