Bacteroides frag·i·lis (fr j  -l s)n. A bacterium that is one of the predominant microorganisms in the lower intestinal tract of humans. |
Bacteroides
a genus of the family Bacteroidaceae, a family of gram-negative, non-spore-forming, obligate anaerobes. Common inhabitants of the alimentary tract and necrotic tissue, probably as secondary invaders.
Bacteroides amylophilus
Bacteroides asaccharolyticus
see Porphyromonas.
Bacteroides fragilis
occasionally infects foals, pigs, lambs and calves, causing diarrhea, mastitis and abscesses.
Bacteroides gingivalis
see Porphyromonas.
Bacteroides heparinolyticus
see Prevotella.
Bacteroides levii
see Porphyromonaslevii.
Bacteroides melaninogenicus
see Prevotellamelaninogenica.
Bacteroides nodosus
Bacteroides ruminicola
see Prevotellaruminicola.
Bacteroides salivosus
see Porphyromonassalivosus.
Bacteroides succinogenes
Bacteroides ureolyticus
gram-negative, microaerophilic bacterial species isolated from the genital tract of mares with endometritis.
Bacteroides fragilis
Microbiology A gram-negative anaerobe which is a frequent isolate in anaerobic cultures; it is associated with abscesses, aspiration pneumonia, endocarditis, septic arthritis and empyema
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