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Author: Patrick P. L. Tam
Publisher:
ISBN: 9781936113248
Category : Science
Languages : en
Pages : 0
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Book Description
"A subject collection from Cold Spring Harbor perspectives in biology."
Author: Patrick P. L. Tam
Publisher:
ISBN: 9781936113248
Category : Science
Languages : en
Pages : 0
Get Book Here
Book Description
"A subject collection from Cold Spring Harbor perspectives in biology."
Author: Ralph B.L. Gwatkin
Publisher: Springer Science & Business Media
ISBN: 1461321433
Category : Science
Languages : en
Pages : 397
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Book Description
Developmental biology has been transformed recently by discoveries in the fields of molecular biology, cell biology, and immunology. New ways of manip ulating mammalian development are uncovering control mechanisms and ena bling us to apply them in solving practical problems in animal production and human health. This book outlines some of these new manipulations and how they have contributed to the present state of developmental biology. Chapter 1 describes gene transfer by micro injection of cloned recombinant DNA into zygotes. Although the factors that affect transformation frequencies and integration sites are still unknown, such techniques offer a number of exciting prospects. Research models for human disease coula be artificially created and desirable characteristics in agricultural animals could be - hanced. . The theme of cell-to-cell transfer is continued in Chapters 2 and 3. Chapter 2 describes pronuclear transplantation by Sendai virus-induced fusion of the karyoplast with the enucleated embryo. Using this procedure, it has been dem onstrated that both male and female genomes are essential for normal develop ment, although the reason for this is not yet understood. Chapter 3 describes studies on the fusion of whole oocytes. .
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309166152
Category : Science
Languages : en
Pages : 254
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Book Description
Assists policymakers in evaluating the appropriate scientific methods for detecting unintended changes in food and assessing the potential for adverse health effects from genetically modified products. In this book, the committee recommended that greater scrutiny should be given to foods containing new compounds or unusual amounts of naturally occurring substances, regardless of the method used to create them. The book offers a framework to guide federal agencies in selecting the route of safety assessment. It identifies and recommends several pre- and post-market approaches to guide the assessment of unintended compositional changes that could result from genetically modified foods and research avenues to fill the knowledge gaps.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309070864
Category : Nature
Languages : en
Pages : 348
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Book Description
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.
Author:
Publisher:
ISBN: 9780815332183
Category : Cells
Languages : en
Pages : 0
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Book Description
Author: Florence Louise Marlow
Publisher: Morgan & Claypool Publishers
ISBN: 161504051X
Category : Family & Relationships
Languages : en
Pages : 221
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Book Description
Eggs of all animals contain mRNAs and proteins that are supplied to or deposited in the egg as it develops during oogenesis. These maternal gene products regulate all aspects of oocyte development, and an embryo fully relies on these maternal gene products for all aspects of its early development, including fertilization, transitions between meiotic and mitotic cell cycles, and activation of its own genome. Given the diverse processes required to produce a developmentally competent egg and embryo, it is not surprising that maternal gene products are not only essential for normal embryonic development but also for fertility. This review provides an overview of fundamental aspects of oocyte and early embryonic development and the interference and genetic approaches that have provided access to maternally regulated aspects of vertebrate development. Some of the pathways and molecules highlighted in this review, in particular, Bmps, Wnts, small GTPases, cytoskeletal components, and cell cycle regulators, are well known and are essential regulators of multiple aspects of animal development, including oogenesis, early embryogenesis, organogenesis, and reproductive fitness of the adult animal. Specific examples of developmental processes under maternal control and the essential proteins will be explored in each chapter, and where known conserved aspects or divergent roles for these maternal regulators of early vertebrate development will be discussed throughout this review. Table of Contents: Introduction / Oogenesis: From Germline Stem Cells to Germline Cysts / Oocyte Polarity and the Embryonic Axes: The Balbiani Body, an Ancient Oocyte Asymmetry / Preparing Developmentally Competent Eggs / Egg Activation / Blocking Polyspermy / Cleavage/ Mitosis: Going Multicellular / Maternal-Zygotic Transition / Reprogramming: Epigenetic Modifications and Zygotic Genome Activation / Dorsal-Ventral Axis Formation before Zygotic Genome Activation in Zebrafish and Frogs / Maternal TGF-β and the Dorsal-Ventral Embryonic Axis / Maternal Control After Zygotic Genome Activation / Compensation by Stable Maternal Proteins / Maternal Contributions to Germline Establishment or Maintenance / Perspective / Acknowledgments / References
Author: Masayori Inouye
Publisher: Academic Press
ISBN: 1483273970
Category : Science
Languages : en
Pages : 330
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Book Description
Experimental Manipulation of Gene Expression discusses a wide range of host systems in which to clone and express a gene of interest. The aims are for readers to quickly learn the versatility of the systems and obtain an overview of the technology involved in the manipulation of gene expression. Furthermore, it is hoped that the reader will learn enough from the various approaches to be able to develop systems and to arrange for a gene of particular interest to express in a particular system. The book opens with a chapter on the design and construction of a plasmid vector system used to achieve high-level expression of a particular phage regulatory protein normally found in minute amounts in a phage-infected bacterial cell. This is followed by separate chapters on topics such as high-level expression vectors that utilize efficient Escherichia coli lipoprotein promoter as well as various other portions of the lipoprotein gene Ipp; DNA cloning systems for streptomycetes; and the design and application of vectors for high-level, inducible synthesis of the product of a cloned gene in yeast.
Author: Brigid Hogan
Publisher: Cold Spring Harbor Laboratory Press
ISBN:
Category : Nature
Languages : en
Pages : 352
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Book Description
Of mouse development -- Setting up a colony for the production of transgenic mice -- Recovery, culture, and transfer of embryos -- Introduction of new genetic information into the developing mouse embryo -- Iolation of pluripotential stem cell lines -- Techhniques for visualizing genes and gene products -- In vitro culture of eggs, embryos, and teratocarcinoma cels -- Chemicals, supplies, and solutions.
Author: National Academies of Sciences, Engineering, and Medicine
Publisher: National Academies Press
ISBN: 0309676681
Category : Medical
Languages : en
Pages : 155
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Book Description
Because of the recent advances in embryo modeling techniques, and at the request of the Office of Science Policy in the Office of the Director at the National Institutes of Health, the National Academies of Sciences, Engineering, hosted a 1-day public workshop that would explore the state of the science of mammalian embryo model systems. The workshop, which took place on January 17, 2020, featured a combination of presentations, panels, and general discussions, during which panelists and participants offered a broad range of perspectives. Participants considered whether embryo model systems - especially those that use nonhuman primate cells - can be used to predict the function of systems made with human cells. Presentations provided an overview of the current state of the science of in vitro development of human trophoblast. This publication summarizes the presentation and discussion of the workshop.
Author: Institute of Medicine
Publisher: National Academies Press
ISBN: 0309170427
Category : Science
Languages : en
Pages : 112
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Book Description
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.
