Fecal genera affected by B. longum expressing srp. (A) Results of examinations of genus-level composition of fecal microbiota after B. longum treatment in NOD/DQ8 mice are depicted as an average percentage corresponding to each group in stacked column charts. (B) Genera significantly differing in relative abundances between groups. Data are shown as box and whisker plots (*, P < 0.05; **, P < 0.01; ***, P < 0.001). Control, nonsensitized, no treatment; srp+, B. longum srp+; Δsrp, B. longum Δsrp; srp(Con), B. longum srp(Con) (n = 5 to 6/group). Statistical analyses were performed via Kruskal-Wallis testing followed by FDR (q < 0.05).