The Proceedings of the Sixth Canadian Cancer Conference provides a broad view of current concepts of the causation of cancer. It emphasizes how much remains to be learned about the causes of cancer and how important fundamental research is in this quest. Previous Proceedings of the "Honey Harbour" Conferences have brought authoritative summaries of important aspects of fundamental cancer research in the areas of experimental tumors, cellular ultrastructure, cell interaction, enzymes, nucleic acids, genetics, viruses, immunity, tumor-host relations, and chemotherapy.
Thirty-six distinguished essayists have contributed to this volume. The book is divided into five sections. In the first, devoted to "Hormonal Carcinogenesis," two papers stress the role of hormonal factors in the etiology, course, and treatment of human breast cancer. Cutts then summarizes the results of estrogen-induced breast cancer in the rat, pointing out interesting similarities of this model to the disease in man. Nandi presents preliminary evidence of a