Colonic DiseasesCrohn DiseaseColonEnemaColorectal NeoplasmsColitis, UlcerativeColonoscopyRectumIntestinal MucosaColonic NeoplasmsColonic Diseases, FunctionalColonic PolypsAdenomaColorectal SurgeryColorectal Neoplasms, Hereditary NonpolyposisRectal NeoplasmsAdenocarcinomaSigmoidoscopyAdenomatous PolypsIntestinal PolypsColitisAdenomatous Polyposis ColiHT29 Cells