A new interpretation of the necrotic changes occurring in the developing limb bud paddle of mouse embryos based upon recent observations in four different phenotypes.

Abstract excerpt

Degenerative changes occurring in the apical ectodermal ridge (a.e.r.) and undifferentiated distal mesoderm of developing limb buds were studied macro- and microscopically in day-11 to day-13 mouse embryos displaying the normal (+/+), oligosyndactylous (Os/+), polydactylous (Xpl/+) and hybrid (Os/+/Xpl/+) phenotypes. Isolated limb buds were submitted either to supravital staining with Nile blue sulfate or to...

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