Immune cell recruitment during lung inflammation caused by P. aeruginosa supernatants. Cellular infiltration into the lung of mice intratracheally instilled with bacterial cell-free 10X supernatants from VR1 and VR2 strains grown in presence or absence of AZM (VR1 ± AZM and VR2 ± AZM). TSB is the bacterial growth medium and was used as a control. The amount of white blood cells and neutrophils found in BALF was expressed as number of cells per μl at 24 h post treatment. The experiment was repeated 3 times and each point represents the mean ± standard error of 8 animals. Results are reported as mean ± SEM and significance attributed when P < 0.05 (*) or P < 0.01 (**).