1 Results for vitelline sac

หรือค้นหา: -vitelline sac-, *vitelline sac*
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WordNet (3.0)

yolk sac

(n) membranous structure that functions as the circulatory system in mammalian embryos until the heart becomes functional, Syn. umbilical vesicle, vitelline sac, vesicula umbilicus

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