1. Biological Chemistry, Biomedical Sciences Division, Imperial College of Science, Technology and Medicine, Sir Alexander Fleming Building, South Kensington, London SW7 2AZ, U.K., Departments of Safety Assessment and Analytical Science, SmithKline Beecham Pharmaceuticals, The Frythe, Welwyn, Herts AL6 9AR, U.K., Preclinical Safety Sciences-Toxicology, Glaxo Wellcome Research and Development, Park Road, Ware, Herts SG12 0DP, U.K., and Applications Department, Bruker Analytische Messtechnik GmbH, D-76287...