allantois (Crossword)

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We didn't find answers to the clue “Allantois” but we did find a clue where “Allantois” could be the answer:
  1. Clue: Fetal membrane
    Answer: allantois

Definitions of “allantois”
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• A vascular, extraembryonic membrane of birds
• An embryonic diverticulum of the hindgut of reptiles
• A membranous sac in the embryos of mammals, birds, and reptiles
• A fetal membrane developing from the hindgut (or yolk sac
• An elongated bladder developing from the hindgut of the fetus in mammals
• Outgrowth from the ventral side of the hindgut in embryos of reptiles
• A sac connected to the embryo's abdomen and involved in embryo respiration
• An extra-embryonic membrane of reptiles, birds, and mammals arising as a pouch
• (ua-lan;to-is) An extraembryonic membranous sac involved in the formation of blood cells
• The allantois is a structure appearing during the early development of vertebrate animals - Reptiles

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