The neural crest as a fourth germ layer and vertebrates as quadroblastic not triploblastic.

نویسنده

  • B K Hall
چکیده

Next to cells, germ layers—the fundamental embryonic cell layers from which tissues and organs form—are the most long-standing units of structural organization of the embryos of multicellular animals (metazoans). First identified in chicken embryos by Pander in 1817, the history of germ layers through the nineteenth century was one of increasing appreciation of their generality and importance:

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عنوان ژورنال:
  • Evolution & development

دوره 2 1  شماره 

صفحات  -

تاریخ انتشار 2000