Affiliation: | 1School of Biology, University of Nottingham, University Park, Nottingham NG7 2RD, UK 2Covance Laboratories Ltd., Otley Road, Harrogate, North Yorkshire, UK 3Central Science Laboratory, Environmental Contaminants and Trace Element Studies (FSQ5), Sand Hutton, York YO41 1LZ, UK 4NIEHS, P.O. Box 12233 (MD E1-06), 111 TW Alexander Drive, Research Triangle Park, NC 27709, USA 5Health & Safety Laboratory, Harpur Hill, Buxton, Derbyshire SK17 9JN, UK 6Institute of Occupational Medicine, Research Park North, Riccarton, Edinburgh, EH14 4AP, UK |