Intestinal MucosaColonColonic NeoplasmsGastric MucosaColonic DiseasesColitis, UlcerativeColitisMouth MucosaMucous MembraneColonic PolypsIntestine, SmallAzoxymethaneNasal MucosaIleumCrohn DiseaseDimethylhydrazinesIntestinal PolypsRectumImmunohistochemistry1,2-DimethylhydrazineAdenomaDextran SulfateMandibular InjuriesMucinsSubmucous PlexusColorectal NeoplasmsTrinitrobenzenesulfonic AcidIntestine, LargeInflammatory Bowel DiseasesColonoscopyCecumAdenocarcinomaBiopsyPrecancerous ConditionsStomachEpitheliumSurgically-Created StructuresColitis, MicroscopicMethylhydrazinesIntestinesColon, SigmoidAdenomatous PolypsAberrant Crypt FociStomach NeoplasmsColitis, LymphocyticRNA, MessengerChoristomaSwineRats, Inbred F344HyperplasiaRats, WistarCarcinogensDisease Models, AnimalRectal NeoplasmsAdenomatous Polyposis ColiEndoscopy, GastrointestinalRats, Sprague-DawleyStomach DiseasesBiological DressingsSerous MembraneEnemaAminosalicylic AcidsMuscle, SmoothGastrointestinal TransitCitrobacter rodentiumDuodenumMast CellsGastrointestinal MotilityMucin-2HistocytochemistrySigmoid DiseasesEndoscopyColonic Pseudo-ObstructionGastritisSpirochaetaAcetic AcidProctocolitisUrinary BladderDiverticulosis, ColonicImmunoenzyme TechniquesBronchiPeriodic Acid-Schiff ReactionMyenteric PlexusEsophagusCaco-2 CellsButyric AcidPyloric AntrumReverse Transcriptase Polymerase Chain ReactionGuinea PigsTime FactorsJejunal DiseasesFecesFetuinsEpithelial CellsStomach UlcerChloridesMice, Inbred C57BLReceptors, Neurokinin-2PeroxidaseGastroscopy