Tannerella forsythia
（重定向自Bacteroides forsythus）
Tannerella forsythia is an anaerobic, Gram-negative bacterial species of the Cytophaga-Bacteroidetes family. It has been implicated in periodontal diseases and is a member of the red complex of periodontal pathogens. T. forsythia was previously named Bacteroides forsythus and Tannerella forsythensis.