这个词是什么意思？
An arthropod subclass (Xiphosura) comprising the North American (Limulus) and Asiatic (Tachypleus) genera of horseshoe crabs.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D006737 · MeSH 2026。
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