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Tinea corporis

A species of obligately anaerobic, Gram-negative, rod shaped bacteria assigned to the phylum Bacteroidetes. This species is nonmotile, non-spore forming, produces a black pigment, beta-N-acetyl-glucosaminidase positive, but xylose arabinose cellobiose, rhamnose, salicin, sucrose, lactose, indole, esculin hydrolysis, alpha-fucosidase, beta-glucosidase and glycine aminopeptidase negative. P. corporis is typically isolated from nonoral sites though a few strains have been isolated from dental root canal infections.

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