Effect of allergen sensitization on phylogenetic diversity. A, Relative abundance of the different microbial phyla in fecal samples of WT and Il4raF709 mice that were either sham sensitized with PBS or sensitized with OVA or OVA/SEB. The combined profile of OVA- and OVA/SEB-sensitized Il4raF709 mice is also shown, as is that of OVA-sensitized Il4raF709 mice that have been treated with allergen-specific Treg cells. B, Relative abundance of the Firmicutes Erysipelotrichi/Erysipelotrichales/Erysipelotrichaceae family in the different groups. C, Relative abundance of the Proteobacteria/Gammaproteobacteria/Enterobacteriales/Enterobacteriaceae family in the different groups. Results represent 4 to 6 mice per group. *P < .05, 1-way ANOVA with posttest analysis.