Considerable progress in our understanding of tumor promotion has been made by cancer researchers throughout the world. In addition, scientists in several other disciplines have made significant contributions in elucidating the pleiotropic effects of tumor promotion. This international symposium was specifically convened to review research progress in these areas and to consider the relevance of these findings to human cancer causation and prevention. The proceedings include the contributions of leading researchers from Europe, Japan and the USA. Several papers report the exciting progress made in understanding how tumor promoters act at the cellular and biochemical levels.

Elsewhere attention is focused on tumor promotion as an important phase in the occurrence of certain human tumors. It is hoped that advances in the understanding of the mechanism of tumor promotion in experimental systems will lead to new and effective approaches to human cancer prevention. The proceedings will be of interest and value to researchers working in cancer research, biochemistry, molecular genetics, mutagenesis and cell biology.