这个词是什么意思？
A genus of gram-negative rod-shaped bacteria in the class GAMMAPROTEOBACTERIA. They are obligately acidophilic and aerobic, using reduced SULFUR COMPOUNDS to support AUTOTROPHIC GROWTH.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D042763 · MeSH 2026。
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