Gastrointestinal TractDigestive SystemDigestive System Physiological PhenomenaUpper Gastrointestinal TractGastrointestinal NeoplasmsGastrointestinal DiseasesLower Gastrointestinal TractStomachIntestinal MucosaUrinary Tract InfectionsIntestinesIntestine, SmallColonUrinary TractCecumIntestine, LargeFecesDuodenumEnteric Nervous SystemGerm-Free LifeGastrointestinal MotilityGastric MucosaIntestinal AbsorptionGastrointestinal ContentsIleumRespiratory Tract InfectionsJejunumLactobacillusPyramidal TractsGastrointestinal HemorrhageEndoscopy, GastrointestinalProbioticsGastrointestinal TransitEsophagusAdministration, OralMolecular Sequence DataDigestionGastrointestinal Stromal TumorsImmunohistochemistryLactobacillus reuteriSwineMetagenomeInflammatory Bowel DiseasesEnteroendocrine CellsBifidobacteriumAnimal FeedBacteriaStomach DiseasesTissue DistributionGastrointestinal HormonesForeign BodiesEnteritisDigestive System DiseasesTime FactorsColony Count, MicrobialIntestinal DiseasesGastric EmptyingStomach NeoplasmsBase SequenceIntubation, GastrointestinalDigestive System Surgical ProceduresRectumDigestive System NeoplasmsRNA, MessengerIntestinal NeoplasmsEndoscopes, GastrointestinalCrop, AvianDuodenal NeoplasmsRespiratory SystemDigestive System AbnormalitiesIntestinal PerforationBiliary TractUrogenital SystemFatty Acids, VolatileEsophageal DiseasesEndoscopyAnti-Bacterial AgentsIntestinal PolypsOrgan SpecificityBiological AvailabilityGenitalia, FemaleMucinsImmunity, MucosalCarcinoid TumorDietAmino Acid SequenceCaco-2 CellsMice, Inbred C57BLPolymerase Chain ReactionCrohn DiseaseEpithelial CellsLiverLactobacillus plantarumColonic NeoplasmsMyenteric PlexusIntestinal ObstructionColonic DiseasesBiliary Tract DiseasesMucous MembraneEpithelium