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  • Title: The distal boundary of myogenic primordia in chimeric avian limb buds and its relation to an accessible population of cartilage progenitor cells.
    Author: Newman SA, Pautou MP, Kieny M.
    Journal: Dev Biol; 1981 Jun; 84(2):440-8. PubMed ID: 10694927.
    Abstract:
    Using chimeras consisting of chick embryos that had received substitution grafts of quail somites, we have determined the distalmost extension of the myogenic primordia in the outgrowing wing bud at 5 days of incubation. At Hamburger-Hamilton stage 25 the most distal premuscle cell is consistently 300 mum or more from the apex of the wing mesoblast. The stage 25 wing tip resembles very early whole limb buds in not having proceeded beyond the mesenchymal state or having expressed markers of terminal differentiation. However, unlike early whole limb buds it is free of a myogenic subpopulation. We therefore propose that the stage 25 wing tip is the appropriate system for in vitro and molecular studies of cartilage differentiation.
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