Colitis, UlcerativeAntibodies, Antineutrophil CytoplasmicColitisVasculitisWegener GranulomatosisAnti-Neutrophil Cytoplasmic Antibody-Associated VasculitisMyeloblastinAntibodiesCrohn DiseasePeroxidaseMesalamineAntibody SpecificityInflammatory Bowel DiseasesColonProctocolectomy, RestorativeAntibodies, MonoclonalIntestinal MucosaAminosalicylic AcidsAntibodies, ViralChurg-Strauss SyndromeAntibodies, BacterialColitis, IschemicFluorescent Antibody Technique, IndirectDextran SulfateRectumMicroscopic PolyangiitisPropylthiouracilAutoantibodiesColectomySulfasalazinePouchitisColitis, CollagenousVasculitis, Leukocytoclastic, CutaneousGlomerulonephritisNeutrophilsFluorescent Antibody TechniqueIleostomyAntithyroid AgentsAntibody FormationGastrointestinal AgentsAntibodies, NeutralizingEnzyme-Linked Immunosorbent AssaySerine EndopeptidasesPrednisoloneCholangitis, SclerosingTrinitrobenzenesulfonic AcidColonic PouchesColitis, MicroscopicPolyarteritis NodosaImmunosuppressive AgentsAzathioprineImmunoglobulin GAntibodies, AntinuclearColonoscopyEnemaBiopsyAntibody AffinityAntibodies, FungalBiological MarkersAntibodies, Anti-IdiotypicColitis, LymphocyticBinding Sites, AntibodyAutoimmune DiseasesRecurrenceProctitisAutoantigensEpitopesRemission InductionHIV AntibodiesMegacolon, ToxicEndocarditis, Subacute BacterialColon, SigmoidAdministration, RectalTreatment OutcomeIleitisAntibodies, ProtozoanCathepsin GAntibodies, NeoplasmAnti-Inflammatory Agents, Non-SteroidalIleumPurpura, Schoenlein-HenochCross ReactionsMethylprednisoloneAntibodies, Monoclonal, Murine-DerivedImmune SeraNeutrophil ActivationCase-Control StudiesSigmoidoscopyImmunoglobulin MLysosomal-Associated Membrane Protein 2Mice, Inbred BALB CGraves DiseaseMethimazoleSeverity of Illness IndexAnti-Inflammatory AgentsSensitivity and SpecificityColonic NeoplasmsTime FactorsFollow-Up StudiesCyclophosphamide