From the reviews: "It provides an in-depth review of current research and future clinical perspectives. ... written for basic science and clinical researchers interested in stem cell biology, as well as those interested broadly in developmental and reproductive biology. Biomedical scientists and clinicians interested in testicular cancer and fertility/infertility also will appreciate the wealth of information and insight. ... This is an outstanding contribution to the literature on mammalian germ cell biology. ... will be valued by all those interested in germ cells and stem cell-based therapies." (Bruce A. Fenderson, Doody's Review Service, June, 2011)