这个词是什么意思？
The U-shaped portion of the renal tubule in the KIDNEY MEDULLA, consisting of a descending limb and an ascending limb. It is situated between the PROXIMAL KIDNEY TUBULE and the DISTAL KIDNEY TUBULE.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D008138 · MeSH 2026。
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