The current state of mutagenicity testing 223 91 Purchase, I. F. H., Richardson, C. R. and Anderson, D. Chromosomal and dominant lethal effects of vinyl chloride. Lancet ii 410411 (1975). 92 Abbatt, J. D., Bora, K. C., Quastel, M. R. and Lefkovitch, L. P. International reference study on the identification and scoring of human chromosome aberrations. Results of a WHO Comparative Study. Bull. Wld Hlth Org. 50 373-388 (1974). 93 Harnden, D. G. Chromosome abnormalities and predisposition towards cancer. Proc. R. Soc. Med. 69 41-43 (1976). 94 German, J. Chromosomes and Cancer (1974) (John Wiley and Sons, New York). 95 Stetka, D. G. and Wolff, S. Sister chromatid exchange as an assay for genetic damage induced by mutagens-carcinogens. I. In vivo test for compounds requiring metabolic activation. Mutation Res. 41 333-343 (1976a). 96 Stetka, D. G. and Wolff, S. Sister chromatid exchange as an assay for genetic damage induced by mutagens-carcinogens. II. In vitro test for compounds requiring metabolic activation. Mutation Res. 41 343-350 (1976b). 97 Legator, M. S., Zimmering, S. and Connor, T. H. The use of indirect indicator systems to detect mutagenic activity in human subjects and experimental animals. In Hollaender, A. (ed.) Chemical Mutagens Vol. 4 pp. 171-191 (1976) (Plenum Press, New York, London). 98 Neel, J. V. Some trends in the study of spontaneous and induced mutation in man. Genetics (in press) (1977). 99 Nute, P. E., Wood, W. G., Stammatoyannopoulos, G., Olivery, C. and Failkow, P. J. The Kenya form of hereditary persistence of foetal haemoglobin: structural studies and evidence for homo- geneous distribution of haemoglobin F using fluorescent anti-haemoglobin F antibodies. Brit. J. Haemat. 32 55-63 (1976). 100 Popp, R. A., Hrisch, G. P. and Bradshaw, B. S. Amino acid substitution: Its use in detection and analysis of genetic variants. Genetics in press (1978). 101 Wyrobek, A. J. and Bruce, W. R. Chemical induction of sperm abnormalities in mice. Proc. Nat. Acad. $ci. (USA) 72 4425-4429 (1975). 102 The Working Group of the Sub-Committee on Environmental Mutagenesis Approaches to deter- mining the mutagenic properties of chemicals: risk to future generations, prepared for the Department of Health, Education and Welfare Committee to co-ordinate Toxicology and Related Programmes. (1977). 103 Abrahamson, S., Bender, M. A., Conger, A.D. and Wolff, S. Uniformity of radiation-induced mutation rates among different species. Nature 245 460462 (1973). 104 Wolff, S. Estimation of the effects of chemical mutagens: lessons from radiation genetics. Mutation Res. 33 95-102 (1975). 105 Sankaranarayanan, K. Evaluation and re-evaluation of genetic radiation hazards in man. Mutation Res. 35 341-414 (1976). 106 Auerbach, C. The effects of six years of mutagen testing on our attitude to the problems posed by it. Mutation Res. 33 3-10 (1975). 107 Sobels, F. H. Some thoughts on the evaluation of environmental mutagens. From the address presented at the 7th Annual EMS Meeting in Atlanta, Georgia, USA (1976).
J. $oc. Cosmet. Chem. 29 225 (1978) Society of Oosmetic Ohemists of Great Britain 1978 Medal Lecture Presentation The 1978 Medal Lecture of the Society of Cosmetic Chemists of Great Britain was given by Professor M. N. Naylot, R.D., B.Sc., B.D.S., Ph.D., F.D.S., R.C.S.(Eng), of the Department of Periodontology and Preventive Dentistry, Guy's Hospital Dental School, University of London. Professor Naylor's lecture was entitled 'Dental Health- a Community Responsibility' and was presented on Thursday, 2nd March, at the Royal Society of Arts, London, before an audience of Society members, their friends and colleagues. When making formal presentation of the Silver Medal immediately prior to the Lecture, the President of the Society, Mr K. V. Curry, reminded the audience that Professor Naylot regularly contributed to Society activities and especially as the Lecturer on Dental Disease and Dental Hygiene at the Society's Postgraduate Courses in Cosmetic Science. The vote of thanks was proposed by the Society's Hon, Treasurer, Mr G. L. Banks, who expressed his gratitude that the Society should honour, for the first time, an eminent member of the dental profession. Professor Naylor's subject was of particular interest to those many members of the Society who were involved with oral care and oral products. This was a sentiment shared by the audience who showed their appreciation by their warm reception of the lecture. 225
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