这个词是什么意思？
A genus of parasitic nematodes whose organisms live and breed in skin and subcutaneous tissues. Onchocercal microfilariae may also be found in the urine, blood, or sputum.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D009854 · MeSH 2026。
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