Charles Brenton Huggins won the Nobel prize in 1966 for his extensive work in cancer research. He has spent fifty years at the laboratory bench exploring the nature of this disease in an attempt to understand and control it. In this volume, based almost exclusively on experiments conducted over the past twenty years at the University of Chicago, is both the record of Huggins's own research and, in Huggins's words, "a do-it-yourself guide for cancer research workers." Written simply and clearly so that the experiments can be easily reproduced, the book presents Huggins's experiments in the induction of breast cancer and leukemia in rodents. It also describes the methods he discovered to prevent cancer and to cure many of the cancers he has been able to induce. Although most of the material concerns breast cancer and leukemia, research on other kinds of tumors is also described.