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Primitive pit

A small depression in the center of the primitive node, located at the cranial end of the primitive groove, and the site of cranial epiblast… Expand
National Institutes of Health

Papers overview

Semantic Scholar uses AI to extract papers important to this topic.
2014
2014
espanolEste trabajo quiere dar a conocer Ia existencia de tres grabados que representan a la Virgen del Rocio, los cuales habian… Expand
1983
1983
To learn the origin and early migration of notochordal cells in the chick embryo, tritiated thymidine‐labeled grafts were… Expand
1967
1967
  • J. Butros
  • Journal of embryology and experimental morphology
  • 1967
  • Corpus ID: 13103890
The author has been using post-nodal segments of early chick blastoderms as an experimental system to study early morphogenesis… Expand
  • figure 1
  • table 1
  • figure 3
1931
1931
After fertilization of the ovum, segmentation and gastrulation, the embryo becomes, during the second week, a simple disc… Expand