1. FRAME, 34 Stoney Street, Nottingham NG1 1NB, UK
2. ICI Central Toxicology Laboratory, Alderley Park, Macclesfield, Cheshire SK104TJ, UK
3. Rhône-Poulenc Santé, Centre de Recherche de Vitry-Alfortville, 13 Quai Jules-Guesde, BP 14, 94403 Vitry-sur-Seine, France
4. Istituto di Ricerche Biomediche Antoine Marxer RBM SpA, Via Ribes, Ivrea, I-10010 Colleretto Giacosa, Italy
5. BGA, P.O. Box 33 00 13, D-1000 Berlin 33, Federal Republic of Germany
6. Department of Biological Toxicology, TNO-CIVO Toxicology and Nutrition Institute, P.O. Box 360, 3700 AJ Zeist, The Netherlands
7. Health & Safety Executive, St Hugh's House, Trinity Road, Booth, Liverpool L20, UK
8. National Chemicals Inspectorate, Division of Scientific Documentation and Research, Box 1384, S-171 27 Solna, Sweden
9. National Food Agency, Morkhoj Bygade 19, DK-2860 Soborg, Denmark
10. Federal Office of Public Health, Bollwerk 27, Berne, Switzerland
11. SIAT (Swiss Institute for Alternatives to Animal Testing), ETH-Zentrum, Turnerstrasse 1, CH-8092 Zurich, Switzerland
12. Chief Veterinary Office, Postbus 5406, 2280 HK Rijswijk, The Netherlands
13. DGXI/A/2, Commission of the European Communities, 200 rue de la Loi, B-1049 Brussels, Belgium
14. ZEBET, Robert v Ostertag Institute, BGA, P.O. Box 33 0013, D-1000 Berlin, Federal Republic of Germany
15. Environment Directorate, OECD, 15 Boulevard de l'Amiral-Bruix, 75016 Paris, France
16. Health and Safety Directorate DG V/E/1, J. Monnet, Commission of the European Communities, Building C469, L-2920 Luxembourg
17. Department of Neurochemistry and Neurotoxicology, University of Stockholm, S-106 91 Stockholm, Sweden