NCIt definition : A species of anaerobic, Gram-positive gut microbes in the class Clostridia. R. gnavus
is described as a normal part of the human gut flora, but can form opportunistic infections.
The species is catalase negative, and growth is inhibited by metronidazole, bile,
and vancomycin but not by kanamycin or colistin.;
Alternative definition : CDISC: Any bacterial organism that can be assigned to the species Ruminococcus gnavus.;