Fig. 4

Pulmonary and blood neutrophil activation during treatment with dexamethasone. Pulmonary neutrophils (gating on the basis of size and granularity (FSC and SSC parameters) excluding macrophages, and MPO⁺ cells) were analyzed by flow cytometry for CD11b (a) and CD13 (b) at Baseline and after one and two weeks of treatment with GC. The percentages of CD11b⁺ and CD13⁺ of blood neutrophils were similarly evaluated for the two groups of horses (c and d). Each bar represents the mean ± SEM. Different between groups *p < 0.05, **p < 0.001 and ***p < 0.0001