这个词是什么意思？
A genus of gram-negative, facultatively anaerobic, rod-shaped bacteria that occurs in the intestines of humans and a wide variety of animals, as well as in manure, soil, and polluted waters. Its species are pathogenic, causing urinary tract infections and are also considered secondary invaders, causing septic lesions at other sites of the body.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D011511 · MeSH 2026。
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