这个词是什么意思？
Single-celled, aquatic endoparasitic worms that are currently considered belonging to the phylum CNIDARIA. They have a complex life cycle and parasitize a wide range of hosts including FISHES; ANNELIDA; and BRYOZOA.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D055764 · MeSH 2026。
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