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| 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 |
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| Davidson,I. |
| The large amounts of feathers produced by the poultry industry, that is considered as a waste was explored for possible uses in various industries, such as meals for animals, biofuels, biodegradable plastic materials, combating water pollution and more. That review mentions these uses, but concentrate on the utilization of feathers for the diagnosis of viral infections and for monitoring vaccine viruses in chickens after vaccination. The viral diseases in which diagnosis using nucleic acids extracted from the feather shafts was described are, Marek's disease virus, circoviruses, chicken anemia virus, fowlpox virus, avian retroviruses, avian influenza virus and infectious laryngotracheitis virus. In two cases, of Marek's disease virus and of infectious... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Avian influenza virus; Avian retroviruses; Infectious laryngotracheitis virus; Circoviruses; Chicken; Chicken anemia virus; Diagnosis of avian viral diseases; Environmental monitoring; Feathers; Fowlpox virus; Marek's disease virus; Malformation of chick feathering; Stability of DNA viruses; Usage of feathers. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000300001 |
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