Est ce que l'avortement est un crime ou un droit? C'est peut etre la question que tu te poses et a la quelle tu n'as pas encore trouve de reponse. La lecture de cette brochure te donnera une idee Claire sur l'avortement de maniere a pouvoir repondre a cette question.

Since the first fertilization of a human egg in the laboratory in 1968, scientific and technological breakthroughs have raised ethical dilemmas and generated policy controversies on both sides of the Atlantic. Embryo, stem cell, and cloning research have provoked impassioned political debate about their religious, moral, legal, and practical implications. National governments make rules that govern the creation, destruction, and use of embryos in the laboratory but they do so in profoundly different ways.

In Embryo Politics, Thomas Banchoff provides a comprehensive overview of political struggles aboutembryo research during four decades in four countries the United States, the United Kingdom, Germany, and France. Banchoff's book, the first of its kind, demonstrates the impact of particular national histories and institutions on very different patterns of national governance. Over time, he argues, partisan debate and religious-secular polarization have come to overshadow ethical reflection and political deliberation on the moral status of the embryo and the promise of biomedical research. Only by recovering a robust and public ethical debate will we be able to govern revolutionary life-science technologies effectively and responsibly into the future."

Nueva edici?n de la obra de referencia en la disciplina que recoge toda la informaci?n necesaria para entender el desarrollo del embri?n humano, desde la concepci?n hasta el momento del nacimiento, con un enfoque claramente molecular. No obstante y a pesar de que se reflejan las ?ltimas investigaciones en regulaci?n g?nica, se?ales de transducci?n, receptores., la obra no pretende ser un tratado enciclop?dico. Cuando se hace referencia al nivel molecular no se hace en profundidad, ya que s?lo en una ocasi?n (cap. 4 y a modo de ejemplo) se reproducen todos los pasos de las v?as y las interacciones moleculares implicadas. Cuando se hace referencia a las correlaciones cl?nicas, el texto se organiza en forma de cuadro de texto y se utiliza siempre el mismo color (morado).Esta nueva edici?n presenta interesantes fotograf?as cl?nicas y dibujos muy claros que ayudan a memorizar de forma bastante f?cil los conceptos pertenecientes tanto a un proceso de desarrollo normal como anormal. Como importante novedad, esta edici?n presenta un enfoque molecular mucho m's profundo y facilita la comprensi?n e interpretaci?n de todos los pasos del desarrollo embrionario a trav's de im?genes 3D. Al final de cada uno de los cap?tulos, se incluyen preguntas de autoevaluaci?n para poder contrastar los conocimientos adquiridos.Otro recurso did?ctico que presenta la obra es la inclusi?n al final de cada cap?tulo de un resumen estructurado en puntos y de preguntas de repaso. Igualmente, a lo largo del texto aparecen las llamadas 'Vi?etas cl?nicas', que plantean un caso cuya respuesta se encuentra al final del libro junto con las de repaso. Se incluye tambi?n el recurso "online" "Student Consult" que cuenta con animaciones, aparte de todo el contenido extra que ofrece este recurso.

An age old mystery, the development of the microscopic embryo into exceedingly complex plants and animals--into roses and cacti, elephants and blue whales, apes and human beings--stands as one of the most fundamental and important questions facing modern biologists. How does one cell give rise
to so many millions of cells? How do they divide so as to form hearts, brains, eyes, and ears? Where in this pin-head-sized object is all this information encoded? Now, in The Triumph of the Embryo, biologist Lewis Wolpert answers these and other questions in a lucid tour of embryology, which offers
the latest theories in this fascinating field.
Filled with rich and unusual examples, metaphors, and descriptions, Wolpert moves beyond his overall narrative to discuss the many issues it raises, such as aging, cancer, regeneration, and evolution. Readers discover why all calico cats are female; encounter a fruit fly engineered to grow a leg
out of its head; and find out why there seems to be a 110 year age barrier for the human body. Clearly written and illustrated with striking examples, The Triumph of the Embryo offers a dazzling look at the marvels of modern biology.

Among the many applications of stem cell research are nervous system diseases, diabetes, heart disease, autoimmune diseases as well as Parkinson's disease, end-stage kidney disease, liver failure, cancer, spinal cord injury, multiple sclerosis, Parkinson's disease, and Alzheimer's disease. Stem cells are self-renewing, unspecialised cells that can give rise to multiple types all of specialised cells of the body. Stem cell research also involves complex ethical and legal considerations since they involve adult, foetal tissue and embryonic sources. This book brings together leading research from throughout the world with particular focus on stem cells and cancer research.

Among the many applications of stem cell research are nervous system diseases, diabetes, heart disease, auto-immune diseases as well as Parkinson's disease, end-stage kidney disease, liver failure, cancer, spinal cord injury, multiple sclerosis, Parkinson's disease, and Alzheimer's disease. Stem cells are self-renewing, unspecialised cells that can give rise to multiple types all of specialised cells of the body. Stem cell research also involves complex ethical and legal considerations since they involve adult, foetal tissue and embryonic sources. This book brings together leading research from throughout the world in this frontier field.

Among the many applications of stem cell research are nervous system diseases, diabetes, heart disease, auto-immune diseases as well as Parkinson's disease, end-stage kidney disease, liver failure, cancer, spinal cord injury, multiple sclerosis, Parkinson's disease, and Alzheimer's disease. Stem cells are self-renewing, unspecialised cells that can give rise to multiple types all of specialised cells of the body. Stem cell research also involves complex ethical and legal considerations since they involve adult, foetal tissue and embryonic sources. This book brings together leading research from throughout the world in this frontier field.

This title contains a book and CD. The brain has a number of nerve cells estimated at a magnitude of 10 to 100 billion, and 1014 to 1015 synapses, and therefore is the most complex organ of the human body. During fetal development the foundations of the brain are laid as billions of neurons form appropriate connections and patterns. In the adult mammalian brain, most neurons are post-mitotic, and therefore at risk for irreversible damage. As we age, atrophy of the brain occurs. As brain weight declines the volume of the brain in the 8th decade is reduced by 6 per cent -10 per cent versus the third decade, and neuronal loss occurs, up to 10,000 to 100,000 neurons are lost per day, though this estimation is being revised downward with the advance of more sophisticated measurements.

New research has shown that children exposed to cocaine before birth are at risk of learning and behavioral problems. Such problems have broad implications for education, social welfare, and criminal justice in the United States. However, there are numerous opportunities to minimize prenatal cocaine exposure and its impacts and thus to enhance the well-being of women and their children. This report, a collaborative effort of the RAND Drug Policy Research Center and the New York Academy of Sciences, presents an overview of the current state of knowledge regarding the effects of cocaine on the developing brain and offers policy considerations for addressing the issues that arise from cocaine use by pregnant women. The report discusses three prevention strategies: primary prevention (preventing substance use before and during pregnancy); secondary prevention (identifying pregnant women who use drugs and minimizing their drug use); and tertiary prevention (reducing the adverse consequences of substance exposure in children who were exposed in utero). In addition, the report presents a number of areas where more research is needed and offers a rationale for making more resources available for women and children affected by cocaine. (JD)

This Basic Concepts title sheds light on the most elusive concepts in embryology and does so in a concise, lively manner. The level of detail is geared directly to that which is required by students in a way which esily accesses the most relevant information. The book utilizes jargon-free language and innovative teaching techniques to promote an understanding of concepts--not just the rote memorization of facts. To further enhance comprehension, text and illustrations accompany each other on the same or facing pages.

Long regarded as biological waste, the placenta is gaining momentum as a viable product for clinical use. Due to their unique properties, placental cells and derivatives show great promise in curing various diseases. Utilizing contributions from world-renowned experts, Placenta: The Tree of Life considers the therapeutic potential of these cells. It examines new stem cell-based strategies and highlights recent studies that advance the range of treatment for a number of illnesses. Emphasizing the potential research and therapeutic use of stem cells, the book discusses the development, structure, and functions of the human placenta. It introduces overall aspects of the immune system, explains some of the immune mechanisms during pregnancy, and shows the role of the placenta in these mechanisms. Current scientific research is presented that focuses on the mechanisms of action underlying the therapeutic benefit of cells isolated from different placental regions. An exhaustive examination, this pivotal work: Considers how perinatal cells may represent an important source for cell therapy approaches in the near future, in both human and veterinary medicine Describes the clinical potential of placenta-derived cells in regenerative medicine-specifically in neurological disorders, metabolic liver diseases, inflammatory diseases, and autoimmune diseases Explains how cells isolated from different placental tissues share basic properties Placenta: The Tree of Life summarizes the advantages of perinatal tissue as a source of cells with therapeutic potential and is designed for use in the study of genetics, stem cell science, placental function, reproductive biology, regenerative medicine, and related fields.

This title includes a number of Open Access chapters. Embryology is the study of embryos. It is the branch of biological science that deals with the formation and early development of an individual organism, from fertilization of the egg (ovum) to birth. This collection includes articles on some of the most important topics in embryology today, such as cryopreservation of human embryos, in vitro generation of neurons from embryonic stem cells, embryonic transfer, transcriptional profiling, and more.

The complex but fascinating field of embryology is presented in this easy-to-understand Thieme Flexibook, complete with 176 color plates. Since the information relevant to medical students is separated from that needed by biologists, both can learn in a focused and time-saving manner. The overview at the beginning of each chapter is also an excellent aid to students. Physicians, biologists and students can delve into any number of topics: from the basics of reproductive biology to general embryology, including the "hot topics" related to cellular and molecular biology.

Kinetic models are becoming standard tools in the research of biological systems. They are used to represent hypotheses, analyze data, and design experiments to maximize the information obtained from a study. Kinetic Models of Trace Element and Mineral Metabolism During Development describes models for calcium, chromium, copper, iron, iodide, lead, mercury, selenium, zinc, and others in health and disease.