(a) WT, Itk−/−, Tg(Lckpr-ItkΔKin)/Itk−/−, and Tg(Lckpr-ItkΔKin)/WT mice were treated as in figure 1, lungs isolated and mRNA for the IL-4, -13 and IFNγ quantified by Q-RT-PCR. (b) BAL fluid from WT, Itk−/−, Tg(Lckpr-ItkΔKin)/Itk−/−, and Tg(Lckpr-ItkΔKin)/WT mice treated as in figure 1 were isolated and the amounts of IL-4, -5 and -13 quantified. *p<0.05 vs. WT mice, ND, none detected.