Ultrastructure of Reproduction: Gametogenesis, Fertilization, and EmbryogenesisJonathan van Blerkom, P. Motta Advances in the development and application of electron microscopic techniques have occurred recently such that the electron microscope has evolved to become an essential tool in both basic and clinical research. Use of this instrument has contributed significantly to the formation of new perspectives and concepts concerning cell fine structure. These structural perspectives are now being integrated with specific functional, biochemical and pathophysiological events and processes of cells and tissues. Most recently, utilization of innovative electron microscopic techniques such as freeze-fracture, freeze etching, and scanning and high-voltage electron microscopy offers both the basic and clinical scientist potentially fundamental insights into many morphodynamic processes related to the activities of cells and tissues. Such an approach has been especially rewarding when applied to the dynamic events of gametogenesis and early embryonic development. The chapters comprising this book have been selected and edited with the aim of providing an up-to-date and comprehensive account of the most important aspects of vertebrate gamets and embryos as revealed by the integration of several different submicroscopic methods. The organization of the chapters is designed to indicate present gaps in our knowledge of the developmental and reproductive biology of gametes and the developing embryo and possible Iines of research which may lead to a lessening of these gaps. |
Contents
GAMETOGENESIS 1 Origin of the germ cell line by E M Eddy | 1 |
Ultrastructure of primordial germ cells in the early chick embryo by A Ukeshima and T Fujimoto | 12 |
Germ and somatic cell interactions during gonadal morphogenesis by H LariosMerchant | 19 |
Copyright | |
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Ultrastructure of Reproduction: Gametogenesis, Fertilization, and Embryogenesis Jonathan van Blerkom,P. Motta No preview available - 2011 |
Common terms and phrases
acrosomal vesicle acrosome reaction activity Anat Rec antigen apical appear apposed associated axoneme binding biochemical Biol Reprod blastocoele blastocyst blastomeres capacitation cauda Cell Biol cell surface cellular changes chromatin chromosomes component cumulus cytoplasm developmental differentiation early electron microscope Embryol exp Morph embryos endoderm endoplasmic reticulum epididymis epithelial epithelium fertilization fibrillar follicles follicular formation freeze-fracture function gene germ cell line gonadal granules granulosa cells hamster human sperm implantation intercellular bridges intracisternal A particle lipid mammals maturation meiotic micrograph microvilli midpiece mitochondria molecular morphological morula motility mouse embryos mouse oocytes nuclear nucleolar nucleoli nucleus observed occurs oocytes oogenesis oogonia organelles ovarian ovary PGCs plasma membrane polar cells postacrosomal preimplantation present primordial germ cells protein rabbit region ribosomes Sertoli cell somatic cells species spermatid spermatid head spermatogenesis spermatozoa spermiation stage structure studies synthesis testis tissue trophectoderm trophoblast ultrastructural uterine uterus vitro zona pellucida