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. 1998 Sep;66(9):4215–4221. doi: 10.1128/iai.66.9.4215-4221.1998

FIG. 4.

FIG. 4

Human monocyte IL-1β release in response to viable E. coli mutants after 90 min of exposure in vitro. Note that WAF270 induced significantly higher levels of IL-1β secretion at all ratios of bacteria to monocytes. P ≤ 0.0003 by ANOVA; error bars indicate standard errors of the means.