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Related articles:
Germ layer
Endoderm
Mesoderm
Embryo
Notochord
Amnion
Blastula
Ectoderm
Yolk sac
Chorion
Fibronectin
Echinoderm
Umbilical cord
Key terms: cells form layers embryo yolk gastrulation animal ysl migrate develop cavity mesoderm ectoderm endoderm dorsal mass divide begins rise pull roof involution toward germ layers tract birds inner mesenchyme primitive occurs vegetal pole remain cleavage groove surrounding invagination extraembryonic posterior digestive marginal zone two layers deep cells consisting animal cap amphibians fibronectin animal pole migrate along convergent extension embryonic shield Search external links cited by footnotes on Wikipedia page Gastrulation: |
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