(E) The hemolytic activity of wild-type pneumococci, TIGR4 (T4) and PLY mutant, T4Δply in the presence of 100 μM peptide P2 and CP2. Data are the mean ± s.e.m. of three independent experiments. *** denotes P < 0.001 by one-way ANOVA with Bonferroni post hoc test for multiple comparisons. n.s. denotes not significant. Exact P values are shown in Appendix Table S4. 