This volume, and its companion volume on the spermatozoon, provide a wide-ranging analysis of the gametes and their reproductive role in humans. The authors give a detailed account of the oocyte that includes particularly helpful information on female infertility and its treatment. The book starts with an evolutionary perspective before focusing on the molecular and cellular biology of the oocyte and its structure and function. The development and maturation of the oocyte is also fully described, including an account of the endocrine and paracrine regulation of ovarian function. Practical issues such as oocyte storage and ovarian stimulation are also fully covered. The volume will be an essential source of information for all clinicians and scientists with an interest in human reproduction.