1. Preimplantation genetic diagnosis 2. Human embryo 3. Embryology, Human This Book discuss another medical innovation in the field of Assisted Reproductive Technology namely, Preimplantation Genetic Diagnosis (PGD). It covers the three main function of PGD: to select embryos that are free from genetic disorders of abnormalities; to select for embryos of a preferred sex and to select for embryos that are tissue match to provide hematopoietic stem cell or bone marrow for transplantation to save an existing sick sibling. Each of these usages carries their own legal, ethical and religious issues that are identified and anlysed in this book. A special emphasis is provided from the Malaysian perspective due to the growing demand of the technology in this country. The content of this book is beneficial to students, academicians, law and policy drafters, medical personnel and anyone interested to learn more about PGD. This book serves as a useful guidance in dealing with the issues arising from the technology.