877 resultados para Vast
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[Factum. Vast. 1792]
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Puhe
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UANL
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Resumen basado en el de la publicación
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Resumen basado en el de la publicación
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G. E. S. [Georg Eislinger]
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Mutations in the endothelin 3 (EDN3) gene severely affect the development of neural crest-derived melanocytes. In this paper, we report the action of EDN3 on neural crest cells in vitro. The presence of EDN3 leads to a large increase in the number of cells, the majority of which eventually differentiate into melanocytes that aggregate to form a reproducible pigmentation pattern. Quantitative analysis of the effect of different culture conditions revealed that EDN3 initially promotes neural crest cell proliferation. This phase of expansion, which can be prolonged for a few weeks if the cells are replaced regularly, is followed by both a decrease in cell proliferation and the onset of melanocytic differentiation. Therefore, EDN3 is a potent mitogen for early neural crest cell precursors that can give rise to melanocytes.
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Inflammatory infiltrates in tissue-specific autoimmune disease comprise a collection of T cells with specificity for an antigen in the target organ. These specific cells recruit a population of nonspecific T cells and macrophages. The rare tissue-specific T cells in the infiltrate have the capacity to regulate both the influx and the efflux of cells from the tissue. Administration of an altered peptide ligand for the specific T cell which triggers autoimmunity can lead to the regression of the entire inflammatory ensemble in a few hours. Interleukin 4 is a critical cytokine involved in the regression of the inflammatory infiltrate.
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"Furnished to subscribers only."
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Mode of access: Internet.
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Binding: blue cover, intricate illustrations in red and gilt on front cover and spine, marbled edges, floral endpapers
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First edition, 1905.
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Mode of access: Internet.