CXCL8 and infection: IL-8 induction was subsequently examined after 2 h of flagellin exposure, and a dose-dependent response was noted with induction levels for 1 μg/ml flagellin approximating those observed during infection with EDL933 (62.6 ± 8.9 fold for flagellin and 80.8 ± 10.5 fold for EDL933; Figure 5C).