Titlebook: Developmental Biology; Werner A. Müller Textbook 1997 Springer-Verlag New York, Inc. 1997 Regeneration.Vertebrate.development.developmenta

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Animal Morphogenesis Is Shaped Actively by Adhesion and Cell Migration,s appear. In turn, these cells create associations of cells serving a common function: tissues and organs. In cell associations the number, the size, and the shape of the individual cells eventually will determine the shape of the whole association. In contrast to the development of plants, in anima

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Cell Journeys: Even Germ Cells and Cells of the Peripheral Nervous System Originate from Emigrant Pnd swarming (Fig. 3–38). In an avian and a mammalian blastodisc the cells of the meso “derm” do not form a “skin” (Greek: . = skin) or a coherent germ “layer”; instead, the mesodermal cells creep around like amoebae to colonize the spaces between the epiblast and the hypoblast (Fig. 3–39, 3–48). Whe

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Heart and Blood Vessels: Divergent Developmental Roads but One System in the End,ndently, far away from the heart. Yet from these divergent and seemingly chaotic origins, a common vascular system emerges. In fact, the vascular system faithfully repeats evolutionarily ancient structures in a highly conservative manner.

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Cancer Comes from Disturbed Growth and Differentiation Control,ocesses of growth. . is defined as an increase in mass. Growth can result from more than one process. For example, enlargement of individual cells is a cause of growth. Muscle fibers grow by expanding in length and diameter. Also, the deposition of extracellular matrix material contributes to the en

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