This extensively updated new edition provides an indispensable account of modern in-vitro fertilization practice, building upon the popularity of previous editions. The authors initially give a comprehensive review of the biology of human gametes and embryos, before outlining basic to advanced IVF techniques. New developments in practical techniques and understanding are discussed, including in-vitro maturation, vitrification, preservation of fertility for cancer patients, stem cell technology, preimplantation genetic testing, and the role of epigenetics and imprinting. The revised introduction also incorporates a  refresher  study review of fundamental principles of cell and molecular biology, now updated with current knowledge of meiosis in human oocytes, embryo metabolism and basic principles of genome editing.