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. Author manuscript; available in PMC: 2013 Nov 1.
Published in final edited form as: Microb Pathog. 2012 Aug 29;53(0):234–242. doi: 10.1016/j.micpath.2012.08.005

Fig. 6.

Fig. 6

(a) Invasion of gingival epithelial cells (Ca9-22) by P. gingivalis 33277 wild type strain, its isogenic SerB mutant and complemented strains. Statistical significance between invasion levels was measured by using Mann–Whitney U test. *p < 0.05. Pg WT: P. gingivalis 33277, Pg SerB-: P. gingivalis SerB mutant, Pg cSerB: Complemented SerB mutant. (b) Effect of co-infection with F. nucleatum on invasion of gingival epithelial cells by P. gingivalis 33277, its isogenic mutant and complemented strains. Statistical significance between invasion levels was measured by using Kruskal–Wallis test with Dunn’s multiple comparisons test. *p < 0.001. Fn: F. nucleatum TDC 100.