这个词是什么意思？
A genus of protozoan parasites found in the intestines of birds, amphibians, reptiles, and mammals, including man. The oocysts produce two sporocysts, each with four sporozoites. Many species are parasitic in wild and domestic animals.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D007549 · MeSH 2026。
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