Institution: | From the ‡Department of Molecular Biology and Biotechnology, The University of Sheffield, Sheffield S10 2TN, United Kingdom.;the §School of Informatics, The University of Edinburgh, Informatics Forum, 10 Crichton Street, Edinburgh EH8 9AB, Scotland, United Kingdom, and ;the ¶Department of Microbiology and Immunology, University of Otago, P. O. Box 56, Dunedin 9054, New Zealand |