这个词是什么意思？
A vein on either side of the body which is formed by the union of the external and internal iliac veins and passes upward to join with its fellow of the opposite side to form the inferior vena cava.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D007084 · MeSH 2026。
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