2Nadkarni MA, Nguyen KA, Chapple CC, et al. Distribution of Porphyromonas gingivalis biotypes defined by alleles of the kgp (Lys- gingipain) gene [J]. J Clin Microbiol, 2004, 42(8) 3873-3876.
3Beikler T, Peters U, Ehmke B, et al. Sequence analysis of kgp in Porphyromonas gingivalis isolates from periodontitis patients [J]. Oral Microbiology Immunology, 2003, 18 : 393-339.
4Ekanayake L, Perera I. The association between clinical oral health status and oral impacts experienced by older individuals in Sri Lanka [J]. J Oral Rehabil, 2004, 31 : 831-836.
5Ozmeric N, Preus HR, Olsen I. Genetic diversity of Porphyromonas gingivalis and its possible important to Pathogenicity [J]. Acta Odontol Scand, 2000, 58 : 183-187.
6Hafid Abaibou, Zhuo Chen, Olango GJ, et al. Fletcher vimA genedownstream of recA is involved in virulence modulation in porphyromonas gingivalis W83 [J] Infect Immun, 2001, 69 (1) : 325-335.
7Zhang P, Yang QB, Balkovetz DF, et al. Effectiveness of the B subnnit of cholera toxin in potentiating immune responses to the recombinant hemagglutinin/adhesin domain of the gingipain Kgp from Porphyromonas gingivalis [J]. Vaccine, 2005, 23(39) : 4734-4744.
8Mezyk--Kopec R, Bzowska M, Potempa J, et al. Inactivation of membrane tumor necrosis factor alpha by gingipains from Porphyromonas gingivalis [J]. Infect Immun, 2005, 73(3): 1506- 1514.
