title: Serum antibody activity against Actinobacillus actinomycetemcomitans in Chinese patients with periodontitis.
mesh_terms: D000188:Actinobacillus / Q000276:immunology*; D000293:Adolescent; D000328:Adult; D000907:Antibodies, Bacterial / Q000032:analysis* / Q000276:immunology; D005098:Exotoxins / Q000276:immunology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010518:Periodontitis / Q000097:blood / Q000276:immunology*
chemical_list: D000907:Antibodies, Bacterial; D005098:Exotoxins; C018579:leukotoxin