Affiliation: | (1) Mikrobiologisches Institut, Eidgenössische Technische Hochschule, CH-8092 Zürich, Switzerland;(2) Department of Molecular Biology, University of Edinburgh, EH9 3JR Edinburgh, Scotland;(3) Present address: Molecular Biology Unit, Veterinary Clinical Centre, Coopers Animal Health Australia Ltd., 3030 Werribee, Vic., Australia;(4) Present address: Celltech Ltd., SL1 4EN Slough, UK;(5) Present address: Biotechnology Australia Pty. Ltd., 2069 Roseville, NSW, Australia |