Fig. 8

Differences in HtrA secretion by several H. pylori strains. a Total cellular protein profiling of the H. pylori lysates by Coomassie-stained SDS-PAGE. b Western blot analysis of level secreted proteins HtrA, UreB and GroEL. CagA was used as a control. c-e The amount of HtrA relative to other secreted proteins (UreB and GroEL). Significant differences were analyzed using Bonferroni test (p < 0.05 *, p < 0.01 ** and p < 0.001 ***). The standard error of mean (SEM) was calculated using at least three repetitions. ns means no significant differences