Measurements of IL-6, IL-7, TNF-, IL-1 and IL-4 in BALF by enzyme-linked immunosorbent assay (ELISA). n = 8 per group (mean ± s.d.) (group 2 (vehicle) compared for IL-6, IL-7 and IL-1 to groups 3–7 with P < 0.0001; for TNF-, group 3, P = 0.0023 and groups 4–7, P < 0.0001; for IL-4, group 3, P = 0.004 and groups 4–7, P < 0.0001). Ordinary one-way ANOVA and post hoc Šídák’s multiple-comparison test was used to assess statistical significance (exact P values are provided except for *** P < 0.001).
