A collection of standard and cutting-edge techniques for using Xenopus oocytes and oocytes/egg extracts to reconstitute biological and cellular processes. These readily reproducible methods take advantage of the oocyte's impressive protein abundance, its striking protein translation capacity, and its breathtaking possibilities for the assembly of infectious viral particles by single cell injection of multiple RNAs. The authors focus on the versatility of frog oocytes and egg extracts in cell biology and signal transduction, and cover all the major uses of oocytes/extracts as experimental models.

Michael P. Richards and Jean-Jacques Hublin The study of hominin diets, and especially how they have (primates, modern humans), (2) faunal and plant studies, (3) evolved throughout time, has long been a core research archaeology and paleoanthropology, and (4) isotopic studies. area in archaeology and paleoanthropology, but it is also This volume therefore presents research articles by most of becoming an important research area in other fields such as these participants that are mainly based on their presentations primatology, nutrition science, and evolutionary medicine. at the symposium. As can hopefully be seen in the volume, Although this is a fundamental research topic, much of the these papers provide important reviews of the current research research continues to be undertaken by specialists and there in these areas, as well as often present new research on dietary is, with some notable exceptions (e. g. , Stanford and Bunn, evolution. 2001; Ungar and Teaford, 2002; Ungar, 2007) relatively lit- In the section on modern studies Hohmann provides a tle interaction with other researchers in other fields. This is review of the diets of non-human primates, including an unfortunate, as recently it has appeared that different lines interesting discussion of the role of food-sharing amongst of evidence are causing similar conclusions about the major these primates. Snodgrass, Leonard, and Roberston provide issues of hominid dietary evolution (i. e.

Carving Nature at its Joints? In order to map the future of biology we need to understand where we are and how we got there. Present day biology is the realization of the famous metaphor of the organism as a bete machine elaborated by Descartes in Part V of the Discours, a realization far beyond what anyone in the seventeenth century could have im- ined. Until the middle of the nineteenth century that machine was an articulated collection of macroscopic parts, a system of gears and levers moving gasses, solids, and liquids, and causing some parts of the machine to move in response to the force produced by others. Then, in the nineteenth century, two divergent changes occurred in the level at which the living machine came to be investigated. First, with the rise of chemistry and the particulate view of the composition of matter, the forces on macroscopic machine came to be understood as the ma- festation of molecular events, and functional biology became a study of molecular interactions. That is, the machine ceased to be a clock or a water pump and became an articulated network of chemical reactions. Until the ?rst third of the twentieth century this chemical view of life, as re?ected in the development of classical b- chemistry treated the chemistry of biological molecules in much the same way as for any organic chemical reaction, with reaction rates and side products that were the consequence of statistical properties of the concentrations of reactants."

The major histocompatibility complex (MHC) genes are involved in the immune system's response to tumor and infected cells and in generating an immune response. This book brings together basic aspects of the regulation of MHC antigens with important clinical applications (in viral infection, viral oncology, cancer biology and autoimmunity). There is a strong emphasis on situations where MHC expression is modulated (either stimulated or repressed). The book's major themes are: the mechanisms of MHC expression--explored at several levels including the transcription and translation of MHC genes and the insertion of MHC protein molecules into plasma membranes; the effect of cytokines on MHC expression--both in the etiology of certain diseases and in possible immunotherapeutic approaches to disease; and the use of gene therapy to modify MHC expression in cancer cells, and thereby cause tumor rejection. This book will be valuable to researchers and clinicians in molecular biology, immunology, oncology, and virology.

'I had the good fortune to behold for the first time that fantastic ending of the growing axon. In my sections of the spinal cord of the three day chick embryo, this ending appeared as a concentration of protoplasm of conical form, endowed with amoeboid movements. It could be compared with a living battering ram, soft and flexible, which advances, pushing aside mechanically the obstacles which it finds in its path, until it reaches the region of its peripheral termination. This curious terminal club, I christened the growth cone.' (Santiago Ramon y Cajal, Recollections of My Life, 1937). In Neuronal Growth Cones, Phillip Gordon-Weeks presents the molecular biology of the behavior of growth cones. The book covers the basic morphology and behavior of growth cones, motility and neurite extension via the growth cone cytoskeleton, pathfinding, intracellular signalling, and synaptogenesis. It is the first detailed, critical analysis of all aspects of growth cone biology.

Development of the shapes of living organisms and their parts is a field of science in which there are no generally accepted theoretical principles. What form these principles are likely to take, when they emerge, is a subject in which there is a wide gulf of disagreement between physical scientists and experimental biologists. This book contains both an extensive philosophical commentary on this dichotomy in views and an exposition of the type of theory most favoured by physical scientists. In this theory living form is a manifestation of the dynamics of chemical change and physical transport or other physics of spatial communication. The reaction-diffusion theory, as initiated by Turing in 1952 and since elaborated by Prigogine and by Gierer and Meinhardt among others, is discussed in detail at a level that requires a good knowledge of a first course in calculus, but no more than that.

Plants are an advantageous group for the consideration of the development of biological form. Plants share most aspects of cell biology with other organisms, yet their embryonic development continues throughout their life, their cells do not move relative to each other and their structure is relatively simple. The chapters in this book are centred around the structure of tissues and its purpose is to try and predict what should be looked for at a molecular level so as to account for observable forms. Each chapter deals with a defined problem such as the role of hormones as correlative agents, tissue polarization, apical meristems and cell lineages. The final chapter develops an alternative approach to the problem of the specification of biological form, that of 'epigenetic selection'. The chapters are centred around the structure of tissues, an intermediate and neglected level between overt morphology and biochemistry, and will be of great interest to all those engaged in attempting to understand the principles behind plant development.

Cytokinesis is the division of the cell body that follows the sorting and transport of chromosomes. This book traces the history of some of the major ideas in the field and gives an account of our current knowledge of animal cytokinesis. It contains descriptions of division in different kinds of cells and the proposed explanations of the mechanisms underlying the visible events. Experiments devised to test cell division theories are described and explained. The forces necessary for cytokinesis now appear to originate from the interaction of linear polymers and motor molecules that have roles in force production, motion and shape change that occur in other phases of the biology of the cell. The localization of the force-producing division mechanism to a restricted linear part of the subsurface is caused by the mitotic apparatus, the same cytoskeletal structure that ensures orderly mitosis.

The aim of the series is to present relatively short accounts of areas of developmental and cell biology where sufficient information has accumulated to allow a considered distillation of the cells. This book studies the developmental biology of fern gametophytes, from their beginning through growth and maturation to their reproductive strategies. The books are intended to interest and instruct advanced undergraduates and graduate students and to make an important contribution to teaching cell and developmental biology. At the same time, they should be of value to biologists who, while not working directly in the area of a particular volume's subject matter, wish to keep abreast of developments relative to their particular interests.

During animal development the descendants of a single cell form many different tissues and organs in appropriate positions within an embryo. To do this they must recognise their position, and this book examines our knowledge of how this is done. It starts by considering how much spatial pattern is already laid down when the egg forms inside the mother, and ends just before the formation of visible organs. Within these limits it considers evidence obtained by a variety of techniques, both experimental and biochemical, and from the embryos of many different animal groups. This breadth of coverage and the amount of detail afforded, particularly to the experimental studies, distinguish it from competing works and will make it a very valuable review. Moreover, in the final chapter the author analyses this evidence in ways which will be new to most readers, and which call into question current ideas about spatial determination.

What determines the direction of evolutionary change? This book provides a revolutionary answer to this question. Many biologists, from Darwin's day to our own, have been satisfied with the answer 'natural selection'. Professor Wallace Arthur is not. He takes the controversial view that biases in the ways that embryos can be altered are just as important as natural selection in determining the directions that evolution has taken, including the one that led to the origin of humans. This argument forms the core of the book. However, in addition, the book summarizes other important issues relating to how embryonic (and post-embryonic) development evolves. Written in an easy, conversational style, this is the first book for students and the general reader that provides an account of the exciting new field of Evolutionary Developmental Biology ('Evo-Devo' to its proponents).

The first volume in this new series explores, through extensive co-operation, new ways of achieving the integration of science in all its diversity. The book offers essays from important and influential philosophers in contemporary philosophy, discussing a range of topics from philosophy of science to epistemology, philosophy of logic and game theoretical approaches. It will be of interest to philosophers, computer scientists and all others interested in the scientific rationality.

In ovo electroporation is an epoch-making achievement in the study of developmental biology. With this method, experiments can be carried out in gain and loss of function in desired tissue at any desired stage in chick embryos. Introduction of a tetracycline-regulated gene expression system and a transposon system has further extended the potential of the method, making it possible to obtain long-term expression and to turn on and off a gene of interest. It is now applied to mice, aquatic animals, and even to plants for the study of developmental biology and for other purposes. In this book, the application of electroporation in many embryonic tissues and organs is introduced, with some chapters that deal with gene transfer in adults. Sonoporation, another useful tool, using ultrasonic waves instead of electric currents, for gene transfer to mesenchymal tissues is also introduced.

In the eighteenth century, two rival theories of organic generation existed. The ‘preformationists’ believed that all embryos had been formed by God at the Creation and encased within one another to await their future appointed time of development, while the ‘epigenesists’ argued that each embryo is newly produced through gradual development from unorganized material. The most important clash between the two schools, the debate between Albrecht von Haller (1708–77) and Caspar Friedrich Wolff (1734–94), crystallized many of the key issues of eighteenth-century biology - the role of mechanism in biological explanation, the relationship of God to His Creation, the question of spontaneous generation, the problems of regeneration, hybrids, and monstrous births. In this book, Professor Roe takes the debate beyond its observational basis and shows that at issue were not only specific embryological problems but also fundamental philosophical questions about the natural world and the way science should explain it.

The transition in anthropological and biomedical research methods over the past 50 years, from anthropometric and craniometric measurements to large-scale microarray genetic studies has resulted in continued revision of opinions and ideas relating to the factors and forces that drive human variation.

Human Variation: From the Laboratory to the Field brings together the contributions of 22 scientists working in four continents to identify and address challenges imposed by variability. It reviews the way we examine and analyze human variation, paying specific attention to genetics, growth and development, and physiology. In presenting new evidence and findings, it also discusses current developments in methodology and analytical techniques, detailing both field and laboratory approaches, and looking at how the two perspectives complement each other.

In bridging that gap between laboratory trials and studies of the human in context, this book covers a number of interesting research areas including ?

• Human adaptation to natural and artificial light, including variations in circadian photosensitivity and effects of light on GI activity
• Cold tolerance and lifestyle in modern society
• Genetics of body weight and obesity
• Human adaptability to emotional and intellectual mental stresses
• Geography, migration, climate, and environmental plasticity as contributors to human variation
• Impact of natural environmental stressors including pollution on physiological and morphological processes

This book is the latest volume in a series of works from the Society for the Study of Human Biology (SSHB), which for half a century has advanced and promoted research in the biology of human populations in all of its branches including human viability, genetics, human adaptability, and ecology, and evolution. It holds two scientific meetings a year. This volume represents work presented during its most recent gathering.

Contemporary research in evolutionary developmental biology has been predominantly devoted to interpreting basic features of animal architecture in molecular genetics terms. Considerably less time has been spent on the exploitation of the wealth of facts and concepts from traditional disciplines, such as comparative morphology. This book integrates traditional morphological and contemporary molecular genetic approaches and deals with postembryonic development as well. It offers unconventional views on the basic features of animal organization, such as body axes, symmetry, segments, body regions, appendages and related concepts. This book is of particular interest to graduate students and researchers in evolutionary and developmental biology, cell biology, genetics, and zoology.

This book examines the genetic circuitry of the well-known "fruit fly," tackling questions of cell assemblage and pattern formation, of the hows and the whys behind the development of the fly. After an initial examination of the proximity versus pedigree imperatives, the volume delves into bristle pattern formation and disc development, with entire chapters devoted to the leg, wing, and eye. Extensive appendices include a glossary of protein domains, catalogs of well-studied genes, and an outline of signaling pathways. More than 30 wiring diagrams among over 60 detailed schematics clarify the text.

Biology of Aging, Second Edition presents the biological principles that have led to a new understanding of the causes of aging and describes how these basic principles help one to understand the human experience of biological aging, longevity, and age-related disease. Intended for undergraduate biology students, it describes how the rate of biological aging is measured; explores the mechanisms underlying cellular aging; discusses the genetic pathways that affect longevity in various organisms; outlines the normal age-related changes and the functional decline that occurs in physiological systems over the lifespan; and considers the implications of modulating the rate of aging and longevity. The book also includes end-of-chapter discussion questions to help students assess their knowledge of the material. Roger McDonald received his Ph.D. from the University of Southern California and is Professor Emeritus in the Department of Nutrition at the University of California, Davis. Dr. McDonald's research focused on mechanisms of cellular aging and the interaction between nutrition and aging. His research addressed two key topics in the field: the relationship between dietary restriction and lifespan, and the effect of aging on circadian rhythms and hypothalamic regulation. You can contact Dr. McDonald at [email protected]. Related Titles Ahmad, S. I., ed. Aging: Exploring a Complex Phenomenon (ISBN 978-1-1381-9697-1) Moody, H. R. & J. Sasser. Gerontology: The Basics (ISBN 978-1-1387-7582-4) Timiras, P. S. Physiological Basis of Aging and Geriatrics (ISBN 978-0-8493-7305-3)

This is the first book about both normal development of the nervous system and how early exposure to alcohol and nicotine interferes with this development. The developing nervous system is highly dynamic and vulnerable to genetic and epigenetic factors that can be additive or synergistic. Disruption of normal brain development leads to an array of developmental disorders. One of the most common of these is mental retardation, the prime cause of which is prenatal exposure to alcohol. As chapters in this book show, alcohol has direct effects on the developing neural system and it affects genetic regulation. Another common neurotoxin is nicotine, and it is discussed in this book for three reasons: (1) the number of adolescents who smoke cigarettes is rising in some populations; (2) prenatal exposure to nicotine affects neurotransmitter systems that are critical for normal brain development and cognition; and (3) prenatal exposure to nicotine is often accompanied by prenatal exposure to alcohol.LThe mature brain is the culmination of an orderly sequence of the basic ontogenetic processes--cell proliferation, migration, differentiation, and death. Neural stem cells and progenitors proliferate in discrete sites; then, young neurons migrate long distances to their residences where they form neural networks. During this sequence many immature cells die, presumably eliminating unsuitable or non-competitive cells. Each process is regulated by genetic and environmental factors. When this regulation goes awry, a dysmorphic and dysfunctional brain results. Though this can be tragic in clinical settings, in experimental contexts it provides keen insight into normal brain development.LThe book isdivided into three parts. The first describes neural ontogeny in the normal brain. The second and third deal with the consequences of early exposure to alcohol and nicotine. Though there are similarities in the effects of these two toxins, there are also intriguing differences. The commonalities reflect the plasticity and resilience of the developing brain while the differences point to the targeted effects of the two toxins. Exploring these effects brings a richer appreciation of brain development. The book will be of interest to neuroscientists, developmental biologists, teratologists, pharmacologists, toxicologists, neurologists, neuropsychologists, and to their students and trainees.

Unwanted childlessness affects approximately one in six couples worldwide. - though the exact proportion of the predominant cause of the problem remains controversial, according to the World Health Organization (WHO), in nearly 40% of cases the cause can be attributed to the female, in 20% to the male, in 25% to both, and in 15% the cause remains unknown. Based on these ?gures, the - cidence of male factor infertility in the general population is approximately 7%. The majority of these men, approximately 30%, experience irreversible idiopathic infertility and cannot father children without some form of medical intervention. Male factor infertility, in addition, may be caused by testicular germ cell cancer, which is known to represent the most common cancer among young men, aged 15 to 35 years, in Western industrialized countries. The number of affected men has increased dramatically over the past 50 years. There is now growing evidence that human testicular germ cell cancer originates from fetal germ cells exhibiting an aberrant programme of gene expression, and tumour progression may be favoured by an aberrant Sertoli cell-germ cell communication.

Fungal Morphogenesis brings together in one book, for the first time, the full scope of fungal developmental biology. The book provides a coherent account of the subject and puts forward ideas that can provide a basis for future research. Throughout, the author blends together physiological, biochemical, structural and molecular descriptions within an evolutionary framework. Sufficient information is provided about fungal biology to give the reader a rounded view of the mycological context within which fungal morphogenesis is played out, without obscuring the broader biological significance. The author is careful to avoid jargon and demystifies technical terms. Written by one of the few people with the necessary breadth of research expertise to deal authoritatively with the wide range of topics presented, this book will appeal to developmental and cell biologists, microbiologists, and geneticists.

Scientists investigating germ cells have, over the past 15 years, originated discoveries and innovations that give us valuable insights into the mechanisms that regulate not just stem cell function, but human development in its widest sense. With contributions from some of the leading researchers in the field, Male Germline Stem Cells: Developmental and Regenerative Potential assesses the implications of these discoveries for understanding the fundamental biology of germline stem cells as well as their potential for human stem cell-based therapies. This monograph covers many of the fundamental issues now being explored by today's generation of stem cell researchers, including the field's potential for regenerative medicine. Ranging from an assessment of the pluripotency of primordial germ cells and their possible applications in treating testicular cancer, to the recovery of once-mordant fertilization-competent sperm, this volume has it all. It is a reference point for any scientist involved in related research as well as being a timely summation of what could prove to be a hugely exciting and very fruitful area of inquiry.

How do hormones and growth factors regulate animal growth in the developing embryo and after injury? What processes at the molecular level determine the growth patterns of different tissues? In this diverse synthesis of recent research the regulation of growth in response to environmental and genetic stimuli is discussed at the level of the animal, tissues and cells. Contrasts are drawn between regulation in foetal and adult tissues, and in different tissues such as the CNS, bone and muscle. Functional chapters focus on the molecular links between mechanical tension and muscle growth, for example, while other chapters review the roles of specific molecules such as growth hormone. This state-of-the-art review will be of significant interest to graduate students and research scientists in the fields of animal growth, endocrinology and cell biology.

This field has generated a large amount of controversy of late, mostly because of fierce rivalry between some of the leading workers in the area. This book pulls together a synthetic overview of the field of developmental instability and fluctuating asymmetry, with the participation of the leading laboratories on both sides of the divide. Thereby creating a much needed synthesis of this timely topic in social evolution, mediating some of the disputes in the field.

This book presents a completely novel approach to the understanding of ageing, which many believe is an unsolved problem in biology. It explains why ageing exists in animals, and reviews our understanding of it at the biological level. This includes a discussion of the origins and evolution of ageing. The book is not a review of research on ageing, but instead draws on material from a wide range of disciplines, including the very extensive biomedical information about age-related diseases in humans. Understanding Ageing argues that much research needs to be done on the cellular and molecular aspects of ageing, if the origins of these diseases are to be understood, and their prevention made possible. This thought-provoking book will appeal to all students and researchers who are interested in ageing, whether they are working in the clinical or basic research sphere.