1 Results for *vesicula umbilicus*
หรือค้นหา: vesicula umbilicus, -vesicula umbilicus-

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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