Animal individual life begins as combination of sperm and oocyte, which results in the embryogenesis from ovum fertilization to fetal stage. Embryology has become one central discipline for many modern biotechnologies. Although this subject has been studied for more than a century, new discoveries appear continuously. This book contains some new discoveries and updates some theories and technologies in animal and human embryology. Major content include new findings in gamete biology, new theories and discoveries in embryo implantation by three-dimensional imaging technology and new concept and actual application of embryology. Thus, this book will greatly update knowledge in embryology field and provide some basic theories and technologies for animal scientists and breeders as well as embryologists and anthropologists.

Recent scientific breakthroughs, celebrity patient advocates, and conflicting religious beliefs have come together to bring the state of stem cell researchâ€"specifically embryonic stem cell researchâ€"into the political crosshairs. President Bush's watershed policy statement allows federal funding for embryonic stem cell research but only on a limited number of stem cell lines. Millions of Americans could be affected by the continuing political debate among policymakers and the public. Stem Cells and the Future of Regenerative Medicine provides a deeper exploration of the biological, ethical, and funding questions prompted by the therapeutic potential of undifferentiated human cells. In terms accessible to lay readers, the book summarizes what we know about adult and embryonic stem cells and discusses how to go about the transition from mouse studies to research that has therapeutic implications for people. Perhaps most important, Stem Cells and the Future of Regenerative Medicine also provides an overview of the moral and ethical problems that arise from the use of embryonic stem cells. This timely book compares the impact of public and private research funding and discusses approaches to appropriate research oversight. Based on the insights of leading scientists, ethicists, and other authorities, the book offers authoritative recommendations regarding the use of existing stem cell lines versus new lines in research, the important role of the federal government in this field of research, and other fundamental issues.

Scientific Frontiers in Developmental Toxicology and Risk Assessment reviews advances made during the last 10-15 years in fields such as developmental biology, molecular biology, and genetics. It describes a novel approach for how these advances might be used in combination with existing methodologies to further the understanding of mechanisms of developmental toxicity, to improve the assessment of chemicals for their ability to cause developmental toxicity, and to improve risk assessment for developmental defects. For example, based on the recent advances, even the smallest, simplest laboratory animals such as the fruit fly, roundworm, and zebrafish might be able to serve as developmental toxicological models for human biological systems. Use of such organisms might allow for rapid and inexpensive testing of large numbers of chemicals for their potential to cause developmental toxicity; presently, there are little or no developmental toxicity data available for the majority of natural and manufactured chemicals in use. This new approach to developmental toxicology and risk assessment will require simultaneous research on several fronts by experts from multiple scientific disciplines, including developmental toxicologists, developmental biologists, geneticists, epidemiologists, and biostatisticians.

Emphasizing the changes worked by circulation and copying, interpretation and debate, this book uses the case to explore how pictures succeed and fail, gain acceptance and spark controversy. It reveals how embryonic development was made a process that we can see, compare, and discuss, and how copying - usually dismissed as unoriginal

Embryo cleavage experiences a series of critical events and remarkable epigenetic modifications, especially morphological change and gene expression. The development of current assisted reproductive technology has created some new observations and novel discoveries in cleavage embryos. This book updates some new technologies and methods on the study of cleavage embryos to select high-quality embryos for transfer and improve embryo implantation and pregnancy. Major contents include embryo cleavage morphokinetics based on time-lapse imaging, gene expression of cleavage embryo and noninvasive assessment, and improving embryo cleavage technology. Thus, this book will greatly add new information for embryologists to select good-quality embryos for transfer to improve human embryo transfer pregnancy rate.

This book presents in-depth coverage of both the clinical and molecular biological aspects of human development. It examines the relationship between basic science and embryology, and describes potential clinical disorders arising out of embryologic problems. A strong clinical focus, practical design, and superb artwork-with more than 150 images new to this edition-allow for quick comprehension and easy application of the latest knowledge in this rapidly advancing field. A user-friendly design enables you to review the material in several ways, and online access to Student Consult enhances your study of the subject and exponentially boosts your reference power. Follows a user-friendly design allowing students to review material in flexible ways and instructors to tailor the book to their specific needs. Reflects the most current advances in molecular biology and genetics. Offers chapters with illustrated timelines of the relevant embryologic stage. Contains a high-quality full-color art program, with excellent line diagrams with a three-dimensional aspect, many color photographs of clinical disorders, excellent black and white electronphotomicrographs, and line drawings showing sequential stages of development. Presents clinical cases in each chapter that place the content into a real-life context. Begins each chapter with a summary providing at-a-glance reference to key information. Features Clinical Tasters following the summaries at the start of each chapter that present a clinical case example related to the material for that chapter. Offers new chapters covering morphogenesis and dysmorphogenesis, for expanded explanations of the making of an embryo, focusing on cell-cell signaling pathways. Emphasizes important content through clinical (In the Clinic) and research (In the Lab) boxes - many new to this edition. Concludes each chapter with lists of references for further in-depth study. Includes access to Student Consult at www.studentconsult.com, where you'll find the complete text and illustrations of the book online, and fully searchable . "Integration Links" to bonus content in other Student Consult titles . 200 USMLE-style questions to help you assess your mastery of the material . embryology animations that bring the topic to life . and much more!