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. 2012 Feb;91(2):275–284. doi: 10.1189/jlb.0711356

Figure 3. Limited effect of LPS on neutrophil histamine production and release.

Figure 3.

Live WT P. aeruginosa strain PAO1 bacteria or live LPS-defective mutant strain PAO1-gmd bacteria were incubated with naïve PMNs at 1:10 ratios of PMN:bacteria. Alternatively, PMNs were incubated with medium alone or with purified LPS at concentrations ranging from 10 to 1000 ng/mL, as shown. Values represent mean ± se; n = 3; **P < 0.01; values obtained by incubating with purified LPS were not significantly different from values obtained with PMN alone (P>0.05).