Mediterraneibacter faecis (also Ruminococcus faecis) is an anaerobic, Gram-positive, non-motile, and non-spore-forming species of bacteria, originally isolated from the faeces of a healthy 26-year-old male during a study on the diversity of cultivable intestinal microbiota of Koreans.
The cells of M. faecis have a coccoid or oval shape and are generally observed in chains. Their optimal growth temperature is 37 °C and cells are oxidase-negative and catalase-positive.
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