这个词是什么意思？
Venous vessels in the umbilical cord. They carry oxygenated, nutrient-rich blood from the mother to the FETUS via the PLACENTA. In humans, there is normally one umbilical vein.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D014471 · MeSH 2026。
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