Affiliation: | (1) Department of Microbiology, University of Edinburgh, EH9 3JG Edinburgh, UK;(2) Present address: The Beatson Institute for Cancer Research, Garscube Estate, Switchback Road, Bearsden, G61 1BD Glasgow, UK;(3) Present address: Department of Biochemistry, University of New South Wales, 2033 Kensinton, NSW, Australia |