<i><scp>P</scp>orphyromonas gingivalis</i> and related bacteria: from colonial pigmentation to the type <scp>IX</scp> secretion system and gliding motility

Abstract excerpt

Porphyromonas gingivalis is a gram-negative, non-motile, anaerobic bacterium implicated as a major pathogen in periodontal disease. P. gingivalis grows as black-pigmented colonies on blood agar, and many bacteriologists have shown interest in this property. Studies of colonial pigmentation have revealed a number of important findings, including an association with the highly active extracellular and surface...

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