Bacteroides fragilis

Bacteroides fragilis is an anaerobic, Gram-negative, pleomorphic to rod-shaped bacterium. It is part of the normal microbiota of the human colon and is generally commensal, but can cause infection if displaced into the bloodstream or surrounding tissue following surgery, disease, or trauma.

Bacteroides fragilis
Scientific classification
Domain: Bacteria
Phylum: Bacteroidota
Class: Bacteroidia
Order: Bacteroidales
Family: Bacteroidaceae
Genus: Bacteroides
Species:
B. fragilis
Binomial name
Bacteroides fragilis
(Veillon and Zuber 1898) Castellani and Chalmers 1919 (Approved Lists 1980)
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