这个词是什么意思？
A genus of gram-negative, facultatively anaerobic bacteria in the family ENTEROBACTERIACEAE. It is found in FOOD; SOIL; and SEWAGE; and is an opportunistic pathogen of humans.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D044086 · MeSH 2026。
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