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Related articles:
Amnion
Embryo
Yolk sac
Chorion
Mesoderm
Endoderm
Umbilical cord
Placenta
Reptile
Endometrium
Key terms: png allantois embryo waste diagram days old chorion nitrogenous developing amnion mammals umbilical cord tail end of human embryo structure Search external links cited by footnotes on Wikipedia page Allantois: |
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