Compos Du Cobalt
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Home > Art, Film & Photography > Compos Du Cobalt: Vitamine B12, Bleu de Cobalt, Hydroxocobalamine, Dioxyde de Cobalt Et de Lithium, Jaune de Cobalt, Kovar, Cobalt-Gris
Compos Du Cobalt: Vitamine B12, Bleu de Cobalt, Hydroxocobalamine, Dioxyde de Cobalt Et de Lithium, Jaune de Cobalt, Kovar, Cobalt-Gris

Compos Du Cobalt: Vitamine B12, Bleu de Cobalt, Hydroxocobalamine, Dioxyde de Cobalt Et de Lithium, Jaune de Cobalt, Kovar, Cobalt-Gris


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About the Book

Les achats comprennent une adhsion l'essai gratuite au club de livres de l'diteur, dans lequel vous pouvez choisir parmi plus d'un million d'ouvrages, sans frais. Le livre consiste d'articles Wikipedia sur: Vitamine B12, Bleu de Cobalt, Hydroxocobalamine, Dioxyde de Cobalt et de Lithium, Jaune de Cobalt, Kovar, Cobalt-Gris. Non illustr. Mises jour gratuites en ligne. Extrait: La vitamine B12 (ou cobalamine) est une vitamine hydrosoluble assurant une bonne fabrication des neuromdiateurs. La vitamine B12 est le cofacteur d'enzymes participant au mtabolisme des acides nucliques et la synthse de la mthionine. Cette vitamine est aussi indispensable au maintien de l'intgrit du systme nerveux et tout particulirement de la gaine de myline qui protge les nerfs et optimise leur fonctionnement. Elle existe sous plusieurs formes appartenant la famille des cobalamines: cyanocobalamine, hydroxocobalamine, mthylcobalamine et adnosylcobalamine. La cyanocobalamine et l'hydroxocobalamine tant ses formes stables. Les cobalamines ont une structure chimique proche de l'hme mais l'atome central de fer est remplac par un atome de cobalt, d'o le nom de cobalamines. Un dficit en vitamine B12 entrane une forme d'anmie, appele anmie de Biermer (ou anmie pernicieuse), dont l'une des caractristiques est la prsence de globules rouges fortement augments en taille (macrocytose). L'origine des recherches sur cette vitamine dbute par la description d'une anmie mortelle, l'anmie pernicieuse, par diffrent auteurs dont Thomas Addison ou Michael Anton Biermer au sicle. Vers 1920, George Whipple, George Minot et William Murphy (prix Nobel de mdecine en 1934) dmontrrent que des extraits de foie sous forme de complments alimentaires taient susceptibles de corriger certaines anmies. Les extraits de foie contiennent le facteur extrinsque, c'est--dire la vitamine B12 elle-mme. William Castle a dmontr qu'il existait ...http: //booksllc.net/?l=fr


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Product Details
  • ISBN-13: 9781159662660
  • Publisher: Books LLC
  • Publisher Imprint: Books LLC
  • Height: 152 mm
  • No of Pages: 30
  • Spine Width: 2 mm
  • Weight: 59 gr
  • ISBN-10: 1159662665
  • Publisher Date: 01 Aug 2010
  • Binding: Paperback
  • Language: French
  • Returnable: N
  • Sub Title: Vitamine B12, Bleu de Cobalt, Hydroxocobalamine, Dioxyde de Cobalt Et de Lithium, Jaune de Cobalt, Kovar, Cobalt-Gris
  • Width: 229 mm


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Compos Du Cobalt: Vitamine B12, Bleu de Cobalt, Hydroxocobalamine, Dioxyde de Cobalt Et de Lithium, Jaune de Cobalt, Kovar, Cobalt-Gris
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