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type genus of Bacteroidaceae; genus of gram-negative rodlike anaerobic bacteria producing no endospores and no pigment and living in the gut of man and animals

genus of Bacteroidaceae; genus of gram-negative rodlike anaerobic bacteria producing no endospores and no pigment and living in the gut of man and animals

A genus of gram-negative, anaerobic, rod-shaped bacteria. Its organisms are normal inhabitants of the oral, respiratory, intestinal, and urogenital cavities of humans, animals, and insects. Some species may be pathogenic.