1. Central Toxicology Laboratory, ZENECA, Alderley Park, Macclesfield, Cheshire SK10 4TJ, UK
2. SEAC Toxicology Unit, Unilever Research, Colworth House, Sharnbrook, Bedford MK44 1LQ, UK
3. ECVAM, JRC Environment Institute, 21020 Ispra (VA), Italy
4. L'Oréal, Life Sciences Research, 1 Avenue Eugène Schueller, 93600 Aulnay-sous-Bois, France
5. TNO Nutrition and Food Research Institute, Toxicology Division, Utrechtseweg 48, 3700 AJ Zeist, The Netherlands