(A) The proportion of dominant Phylum communities in each group of samples. Phylum communities less than 10% was merged into others. (B) Distribution of three dominant Phylum (Firmicutes, Bacteroidetes and Protebacteria) in each groups. Data were exhibited as the mean ± SD (n=4 mice per group). *P<0.05, **P<0.01 vs. DSS group; ^##P<0.01, ^###P<0.001 vs. Vehicle group.