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	Provedor de dados International Journal of Morphology (1) Autor Alibardi,Lorenzo (1) Palavra-chave Barbs (1) Differentiation (1) Feathers (1) Lipidization (1) Ultrastructure (1) Tipo do documento Journal article (1) Ano 2007 (1) País Chile (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última Cytological Aspects of the Differentiation of Barb Cells During the Formation of the Ramus of Feathers International Journal of Morphology Alibardi,Lorenzo. The present ultrastructural study on developing and regenerating feathers of chick and zebrafinch describes the ultrastructural changes that occur during the differentiation of barb cells that leads to the formation of the ramus of barbs. Differently from barbule and barb cortical cells that accumulate feather keratin, barb medullary cells undergo to lipid degeneration. Eventually, lipids disappear and medullary cells become empty cavities in the central part of the ramus. In barb medullary cells feather keratin is accumulated in few peripheral bundles that merge with those of cortical cells to fom the wall of the ramus. The latter is joined with branching barbules. The process that controls the transition from keratin-synthesizing to lipid-producing barb... Tipo: Journal article Palavras-chave: Feathers; Barbs; Differentiation; Lipidization; Ultrastructure. Ano: 2007 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022007000100010 Registros recuperados: 1 Primeira ... 1 ... Última

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