Trinitrobenzenesulfonic AcidSulfonic AcidsColitisNitrobenzenesColonPeroxidaseAnilino NaphthalenesulfonatesIntestinal MucosaDisease Models, AnimalPicryl ChlorideRats, Sprague-DawleyMice, Inbred BALB CKineticsRats, WistarTumor Necrosis Factor-alphaHydrogen-Ion ConcentrationDose-Response Relationship, Drug