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Related articles:
Amnion
Embryo
Allantois
Endoderm
Mesoderm
Chorion
Placenta
Endometrium
Key terms: png embryo mm yolk sac week vesicle seen tube amnion human embryo diagram primitive vitelline development duct situated membrane endoderm stage starts days hypoblast section Search external links cited by footnotes on Wikipedia page Yolk sac: |
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