title: [Comparative action of chronic injection of alpha toxin from Naja nigricolis and of botulinum toxin A on the development of chick embryo dorsal and ventral spinal roots].
abstract: The chronic injection of high doses of alpha toxin from Naja nigricollis or botulinum toxin type A in the yolk sack of developing Chick embryos causes a selective decrease of the number of fibers in the ventral roots of the spinal nerves; at the concentrations needed this reduction is more important with the alpha toxin than with the botulinum toxin.
mesh_terms: D000818:Animals; D001905:Botulinum Toxins / Q000494:pharmacology*; D002642:Chick Embryo; D009413:Nerve Fibers, Myelinated; D012910:Snake Venoms / Q000494:pharmacology*; D013126:Spinal Nerve Roots / Q000196:embryology
chemical_list: D012910:Snake Venoms; D001905:Botulinum Toxins
vernacular_title: Effets comparés de l'injection chronique de toxine alpha de Naja nigricollis et de toxine botulinique A sur le développement des racines dorsales et ventrales de la moelle épinière d'embryons de poulet