Properties of hFLIL33(71–79A9) and hFLIL33(71–79DEL) mutants in vivo. A – D. Total and differential (eosinophils, lymphocytes, neutrophils) cell counts of BAL samples from wild type and ST2 knockout mice infected intratracheally with AdV constructs encoding the indicated variants of IL-33; day 14 after infection. E – H. ELISAs of lung homogenates for IL-4, IL-5, IL-13, and CCL2 in WT mice infected intratracheally with AdV constructs encoding the indicated variants of IL-33; day 14 after infection. In panels E – J, dots represent individual mice and horizontal bars show mean values for each group. Statistically significant differences (p < 0.05) from AdV-NULL-infected mice are indicated with asterisks.