The aim of this study was to investigate the development and diffferentiation of the adrenal glands in the grass snake during early stages of ontogenesis. After light microscopy and ultrastructural investigation, six developmental phases were distinguished in the grass snake adrenal glands. Similar developmental phases were described in pig embryos but they slightly differ from those presented above. In reptile and mammal embryos a similar direction of changes is observed in primaordia of both tissues forming adrenal glands.
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Taschenbuch. Etat : Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Knowledge of the development and differentiation of adrenal glands in reptile embryos is fragmentary and inaccurate. Many contradictions and a lack of electron microscopical analysis of reptile adrenal primordia make it difficult to compare the gland development to other vertebrate groups. Insufficient knowledge allows us to only form hypotheses as to the differentiation of reptile adrenals, leading to certain generalisations on the evolutionary development of this organ in vertebrates. Thus, there are still many questions worth answering. To date, the genesis of interrenal tissues has not been clarified. The question of the moment of differentiation of two tissues remains open, as does that of their mutual topographic relationship during the development of adrenal glands in almost all reptile species. Furthermore, the time of the start of catecholamine synthesis in chromaffin tissue cells has not yet been defined. We also do not know when the adrenal cells in reptiles leave the embryonic stage and enter a full activity period. The reader will find answers to many of the above questions in the present volume. 116 pp. Englisch. N° de réf. du vendeur 9783540431657
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Etat : New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. The aim of this study was to investigate the development and diffferentiation of the adrenal glands in the grass snake during early stages of ontogenesis. After light microscopy and ultrastructural investigation, six developmental phases were distinguished . N° de réf. du vendeur 4890289
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Taschenbuch. Etat : Neu. Druck auf Anfrage Neuware - Printed after ordering - Knowledge of the development and differentiation of adrenal glands in reptile embryos is fragmentary and inaccurate. Many contradictions and a lack of electron microscopical analysis of reptile adrenal primordia make it difficult to compare the gland development to other vertebrate groups. Insufficient knowledge allows us to only form hypotheses as to the differentiation of reptile adrenals, leading to certain generalisations on the evolutionary development of this organ in vertebrates. Thus, there are still many questions worth answering. To date, the genesis of interrenal tissues has not been clarified. The question of the moment of differentiation of two tissues remains open, as does that of their mutual topographic relationship during the development of adrenal glands in almost all reptile species. Furthermore, the time of the start of catecholamine synthesis in chromaffin tissue cells has not yet been defined. We also do not know when the adrenal cells in reptiles leave the embryonic stage and enter a full activity period. The reader will find answers to many of the above questions in the present volume. N° de réf. du vendeur 9783540431657
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Taschenbuch. Etat : Neu. This item is printed on demand - Print on Demand Titel. Neuware -The aim of this study was to investigate the development and diffferentiation of the adrenal glands in the grass snake during early stages of ontogenesis. After light microscopy and ultrastructural investigation, six developmental phases were distinguished in the grass snake adrenal glands. Similar developmental phases were described in pig embryos but they slightly differ from those presented above. In reptile and mammal embryos a similar direction of changes is observed in primaordia of both tissues forming adrenal glands.Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 116 pp. Englisch. N° de réf. du vendeur 9783540431657
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