Gastrointestinal TractDigestive SystemDigestive System Physiological PhenomenaUpper Gastrointestinal TractGastrointestinal NeoplasmsGastrointestinal DiseasesLower Gastrointestinal TractStomachIntestinal MucosaUrinary Tract InfectionsIntestinesIntestine, SmallColonUrinary TractCecumIntestine, LargeDuodenumFecesEnteric Nervous SystemGerm-Free LifeGastrointestinal MotilityGastric MucosaIntestinal AbsorptionGastrointestinal ContentsIleumRespiratory Tract InfectionsJejunumLactobacillusPyramidal TractsGastrointestinal HemorrhageEndoscopy, GastrointestinalProbioticsGastrointestinal TransitEsophagusAdministration, OralGastrointestinal Stromal TumorsDigestionLactobacillus reuteriEnteroendocrine CellsInflammatory Bowel DiseasesMetagenomeImmunohistochemistrySwineBifidobacteriumStomach DiseasesGastrointestinal HormonesAnimal FeedForeign BodiesEnteritisGastric EmptyingDigestive System DiseasesIntestinal DiseasesColony Count, MicrobialTissue DistributionIntubation, GastrointestinalBacteriaDigestive System Surgical ProceduresStomach NeoplasmsDigestive System NeoplasmsEndoscopes, GastrointestinalRectumIntestinal NeoplasmsMolecular Sequence DataCrop, AvianDuodenal NeoplasmsDigestive System AbnormalitiesIntestinal PerforationBiliary TractRespiratory SystemFatty Acids, VolatileEsophageal DiseasesEndoscopyIntestinal PolypsUrogenital SystemCarcinoid TumorImmunity, MucosalGenitalia, FemaleTime FactorsMucinsBiological AvailabilityCrohn DiseaseCaco-2 CellsMyenteric PlexusLactobacillus plantarumIntestinal ObstructionPrebioticsAnti-Bacterial AgentsBiliary Tract DiseasesColonic DiseasesDietInterstitial Cells of CajalProto-Oncogene Proteins c-kitOrgan SpecificityMucous MembraneColonic NeoplasmsAbdominal PainEndoscopy, Digestive SystemEscherichia coli InfectionsDuodenal DiseasesMesentery