Figure 4. Evaluation of the neutrophil population in control and Pseudomonas aeruginosa-or Staphylococcus aureus-induced pneumonia mice.

Proportions of neutrophils (Gr-1^pos CD11b^pos) were assessed in murine BALs 24 hours after intra-tracheal instillation of saline solution (C), Pseudomonas aeruginosa (PA) or Staphylococcus aureus (SA). Boxes represent median (interquartile ranges) from three independent experiments (n≥5 mice per group). A Kruskal-Wallis test with Mann-Whitney test using Bonferroni's corrections for post-hoc analysis was used. *: p<0.001 compared with the sham group.