IleumIntestinal MucosaGastric MucosaMouth MucosaColonic NeoplasmsColon, DescendingNasal MucosaColon, SigmoidColon, AscendingIntestine, SmallColonGuinea PigsMucous MembraneDuodenumColon, TransverseMuscle, SmoothMyenteric PlexusIleitisIntestinesIleal DiseasesOlfactory MucosaGastrointestinal MotilityAzoxymethaneIntestinal AbsorptionHT29 CellsColonic DiseasesLaryngeal MucosaCecumMuscle ContractionAdenocarcinomaDiverticulum, ColonColitis, UlcerativeColitisColorectal NeoplasmsIleal NeoplasmsIntestine, LargeStomachImmunohistochemistryCrohn DiseaseRNA, MessengerAdenomaColonoscopySwinePrecancerous Conditions1,2-DimethylhydrazineDigestive SystemIntestinal DiseasesCaco-2 CellsDimethylhydrazinesColectomyAtropineGastrointestinal ContentsIntestinal SecretionsMucinsGastritisGastrointestinal TractBiopsyMicrovilliIleocecal ValveRats, WistarCell Line, TumorPeristalsisEsophagusDose-Response Relationship, DrugRectal NeoplasmsIleostomyRectumCarcinogensHistamineIntestinal PolypsStomach UlcerFecesTime FactorsDiphenylacetic AcidsDextran SulfateReverse Transcriptase Polymerase Chain ReactionInflammatory Bowel DiseasesRabbitsEnterocytesEpithelial CellsSerous MembraneTumor Cells, CulturedEpitheliumGene Expression Regulation, NeoplasticEnteritisPyloric AntrumSucraseRats, Inbred F344Rats, Sprague-DawleyAcetylcholineApoptosisMetaplasiaStomach NeoplasmsDisease Models, AnimalChloridesIntestinal ObstructionGastrinsRats, Inbred StrainsSubstance PDiet