[Intestinal bacterial colonisation and translocation in C3H/HeJ conventional mice fed a unique dose of live or dead Bifidobacterium breve C50].

The efficiency and safety of use of Bifidobacterium breve C50 (BbC50), a potential probiotic, was assessed as regards intestinal microbial colonisation and bacterial translocation. A suspension of BbC50, containing 1-5 to 107-108 live bacteria, was fed to C3H/HeJ mice. The passage of live BbC50 was not demonstrated by culture either in the intestine or extra-intestinal organs.