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Sensitivities of various cells to Pseudomonas HSLs. Cells were incubated with 50 μM C4-HSL (closed columns) or 3-oxo-C12-HSL (open columns) for 2 or 24 h, and then cell viability at each time point was examined and compared to that of nontreated cells (n = 5 to 7). Panels: a, neutrophils; b, U-937 cells; c, P388D1 cells; d, CCL-185 cells; e, HEp-2 cells. *, P < 0.05 compared with nontreated control group.
