B. longum NCC2705 is detected in the gastrointestinal tract of treated mice. (A) The relative abundances of Bifidobacteria genus members as determined by 16S rRNA sequencing were similar for all groups of NOD/DQ8 mice (n = 5 to 6/group). SI, small intestine. (B) Strain-specific primers detected B. longum
Δsrp, B. longum
srp+, and B. longum
srp(Con) in small-intestinal DNA extracted from all bacterially treated mice. Control, nonsensitized, no treatment; srp+, B. longum
srp+; Δsrp, B. longum Δsrp; srp(Con), B. longum srp(Con) (n = 5/group). Statistical analyses were performed via Kruskal-Wallis testing followed by FDR determinations (q < 0.05).