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. 2011 Jan 25;2(1):30–40. doi: 10.4161/viru.2.1.14752

Figure 6.

Figure 6

Complement-dependent killing of Campylobacter strains by normal human serum. The indicated Campylobacter strains were incubated with 10% serum (NHS, normal human serum; black bars) or serum previously heated to inactivate complement (HINHS, heat-inactivated NHS; white bars). C. fetus strains 23B and 23D are the serum-sensitive and -resistant controls, respectively. (A) Susceptibility of C. jejuni diarrheal (11168, 79–193 and 81–176) and systemic strains (84-25 and 84-19) to 10% NHS versus control (HINHS). (B) Susceptibility of kpsM and waaF mutants in C. jejuni systemic strain backgrounds (84-25 and 84-19). Bars represent the mean + SD for at least three replicate experiments. Brackets indicate statistically significant differences in survival between wild-type and kpsM mutants (p < 0.05) using the Student's two-tailed t-test.