The development and selection of ovarian follicles is one of the most active areas of contemporary reproductive research. Relevant experimental work extends from laboratory rodents, across a wide range of domestic species, to human clinical studies, especially as related to problems of fertility and in vitro fertilisation. This 2003 volume provides comprehensive coverage of the field, integrating research findings from animal and human studies and condensing the vast published literature into a meaningful and digestible physiological account which highlights the key role played by the oocyte in influencing all stages of follicular development.