这个词是什么意思？
A family of gram-negative, aerobic bacteria in the order Pseudomonadales. Some strains are parasites of the mucosal membranes of animals and humans; others are found in association with food products or in the environment.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D044007 · MeSH 2026。
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