VasculitisAntibodies, Antineutrophil CytoplasmicAnti-Neutrophil Cytoplasmic Antibody-Associated VasculitisWegener GranulomatosisMyeloblastinSystemic VasculitisRetinal VasculitisChurg-Strauss SyndromeAntibodiesVasculitis, Central Nervous SystemPolyarteritis NodosaMicroscopic PolyangiitisAntibody SpecificityGlomerulonephritisPeroxidaseAutoantibodiesPurpura, Schoenlein-HenochSkin Diseases, VascularFluorescent Antibody Technique, IndirectAntibodies, MonoclonalSerine EndopeptidasesAntibodies, ViralPropylthiouracilNeutrophilsRheumatoid VasculitisVasculitis, Leukocytoclastic, CutaneousAntibodies, BacterialAntithyroid AgentsEnzyme-Linked Immunosorbent AssayAntibodies, AntinuclearFluorescent Antibody TechniqueImmunosuppressive AgentsAutoimmune DiseasesCryoglobulinemiaImmunoglobulin GAntibody FormationAntibodies, NeutralizingArteritisAutoantigensAntibodies, Monoclonal, Murine-DerivedPrednisoloneNeutrophil ActivationAntibody AffinityCyclophosphamideLysosomal-Associated Membrane Protein 2Endocarditis, Subacute BacterialMucocutaneous Lymph Node SyndromePlasma ExchangeBiological MarkersAntibodies, Anti-IdiotypicBiopsyMethylprednisoloneColitis, UlcerativeAntigen-Antibody ComplexBehcet SyndromeLupus Erythematosus, SystemicCryoglobulinsRecurrenceLung DiseasesRespiratory BurstScleritisEpitopesAntibodies, FungalCathepsin GBinding Sites, AntibodyGiant Cell ArteritisImmunoglobulin MRemission InductionPurpuraAzathioprineGraves DiseaseNose DiseasesMethimazoleHIV AntibodiesTakayasu ArteritisSensitivity and SpecificityGlucocorticoidsAntibodies, NeoplasmAntibodies, ProtozoanKidney DiseasesHemoptysisImmune SeraTreatment OutcomePlasmapheresisCross ReactionsNecrosisPancreatic ElastaseMercuric ChlorideLeukocyte ElastaseHemorrhageRetrospective StudiesKidneyLactoferrinDrug Therapy, CombinationReceptors, IgGDrug ContaminationImmunoglobulin Fab FragmentsFixativesLeg DermatosesFollow-Up Studies