AAD was induced in WT and AEC-PPARγ−/− mice by OVA sensitization on days 0 and 7 and challenge on even-numbered days 14–22. Control mice were similarly treated with PBS. Twenty-four hours later, BALF samples were obtained and indicated cytokine, chemokine, and immunoglobulin levels (IL-5, IL-13, eotaxin, TSLP, IgE, and IgG1) were measured by ELISA. The data are expressed as the mean ± SD with n = 6 mice/group. The results were reproduced at least two times independently; **P < 0.01, ***P < 0.001, n.s. = non-significant.