BifidobacteriumBifidobacteriales InfectionsMethanobrevibacterProbioticsYogurtLactobacillus reuteriGastrointestinal TractCultured Milk ProductsClustered Regularly Interspaced Short Palindromic RepeatsLactobacillusDuodenitisLactobacillus rhamnosusBacterial ProteinsGenome, BacterialSequence Analysis, DNAImmunity, ActiveProteomeFermentationPeptide Elongation Factor TuDNA FingerprintingColony Count, MicrobialMolecular Sequence DataSequence HomologyDNA, BacterialIntestinesMilkPlasminogenFecesChaperonin 60PhylogenyNucleic Acid Amplification TechniquesBile Acids and Salts