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Too tiny to see with the naked eye, the human embryo was just a hypothesis until the microscope made observation of embryonic development possible. This changed forever our view of the minuscule cluster of cells that looms large in questions about the meaning of life. Embryos under the Microscope examines how our scientific understanding of the embryo has evolved from the earliest speculations of natural philosophers to today's biological engineering, with its many prospects for life-enhancing therapies. Jane Maienschein shows that research on embryos has always revealed possibilities that appear promising to some but deeply frightening to others, and she makes a persuasive case that public understanding must be informed by up-to-date scientific findings. Direct observation of embryos greatly expanded knowledge but also led to disagreements over what investigators were seeing. Biologists confirmed that embryos are living organisms undergoing rapid change and are not in any sense functioning persons. They do not feel pain or have any capacity to think until very late stages of fetal development. New information about DNA led to discoveries about embryonic regulation of genetic inheritance, as well as evolutionary relationships among species. Scientists have learned how to manipulate embryos in the lab, taking them apart, reconstructing them, and even synthesizing--practically from scratch--cells, body parts, and maybe someday entire embryos. Showing how we have learned what we now know about the biology of embryos, Maienschein changes our view of what it means to be alive.

Embryology, Human --- Human embryo --- Developmental biology --- Development (Biology) --- Biology --- Growth --- Ontogeny --- Embryo, Human --- Human embryology --- Embryology --- Human biology --- Human reproduction

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This book provides the Assisted Reproduction Technologies (ART) community an update of the fast approaching novel technologies that may allow improved assessment of the reproductive potential of sperm, oocytes and embryos. The reader has access to concise updates on the rapidly developing diagnostic technologies (genomics, transcriptomics, proteomics and metabolomics) and morphological methods which may help us better assess the gametes and embryos. Methodologies are described which enable selection of the best gamete or embryo by invasive and non-invasive diagnostics, as well as the clinical validity of these techniques.

Gametes. --- Human embryo. --- Embryo, Human --- Embryology, Human --- Germ cells --- Reproductive Medicine. --- Cytology. --- Embryology. --- Cell Biology. --- Human reproduction --- Human reproductive health --- Human reproductive medicine --- Reproductive medicine --- Health --- Animal embryology --- Animals --- Development, Embryological --- Development, Embryonic --- Development, Zygotic --- Embryogenesis --- Embryogeny --- Embryological development --- Embryonic development --- Zoology --- Zygote development --- Zygotes --- Zygotic development --- Zygotic embryogenesis --- Developmental biology --- Morphology (Animals) --- Embryos --- Reproduction --- Cell biology --- Cellular biology --- Biology --- Cells --- Cytologists --- Health aspects --- Embryology --- Development --- Reproductive medicine. --- Cell biology.