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Defenition of the word allantois

    • Defenition of the word allantois

      • vascular fetal membrane that develops from the hindgut in embryonic higher vertebrates (mammals; birds; reptiles)
      • vascular fetal membrane that develops from the hindgut in embryonic higher vertebrates (reptiles, birds and mammals)
      • the vascular fetal membrane that lies below the chorion and develops from the hindgut in many embryonic higher vertebrates (reptiles, birds and mammals)

    Hypernyms for the word allantois

      • fetal membrane
      • sac

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