Lead RadioisotopesPeritoneal NeoplasmsPeritoneal DiseasesInflammatory Bowel DiseasesIrritable Bowel SyndromeShort Bowel SyndromeTunica IntimaCrohn DiseaseColitis, UlcerativeImage EnhancementTime FactorsContrast MediaTomography, X-Ray ComputedColonMagnetic Resonance ImagingMicroscopy, ElectronPleural DiseasesMicroscopy, Electron, ScanningIntestinal DiseasesDisease Models, AnimalCarotid ArteriesIntestinal MucosaConstipationTunica MediaDefecationHyperplasiaMenstruation DisturbancesDogsIntestine, Large