VasculitisAntibodies, Antineutrophil CytoplasmicAnti-Neutrophil Cytoplasmic Antibody-Associated VasculitisMyeloblastinWegener GranulomatosisSystemic VasculitisRetinal VasculitisChurg-Strauss SyndromeAntibodiesVasculitis, Central Nervous SystemPolyarteritis NodosaMicroscopic PolyangiitisAntibody SpecificityGlomerulonephritisPeroxidaseAutoantibodiesPurpura, Schoenlein-HenochSkin Diseases, VascularFluorescent Antibody Technique, IndirectAntibodies, MonoclonalSerine EndopeptidasesAntibodies, ViralPropylthiouracilNeutrophilsRheumatoid VasculitisVasculitis, Leukocytoclastic, CutaneousAntibodies, BacterialEnzyme-Linked Immunosorbent AssayAntithyroid AgentsAntibodies, AntinuclearImmunosuppressive AgentsFluorescent Antibody TechniqueAutoimmune DiseasesCryoglobulinemiaImmunoglobulin GAntibody FormationAntibodies, NeutralizingArteritisAutoantigensAntibodies, Monoclonal, Murine-DerivedPrednisoloneNeutrophil ActivationBiological MarkersAntibody AffinityCyclophosphamideLysosomal-Associated Membrane Protein 2Endocarditis, Subacute BacterialMucocutaneous Lymph Node SyndromeBiopsyPlasma ExchangeAntibodies, Anti-IdiotypicMethylprednisoloneColitis, UlcerativeAntigen-Antibody ComplexLupus Erythematosus, SystemicRecurrenceSensitivity and SpecificityBehcet SyndromeLung DiseasesCryoglobulinsRespiratory BurstEpitopesScleritisAntibodies, FungalTreatment OutcomeCathepsin GBinding Sites, AntibodyGiant Cell ArteritisImmunoglobulin MRemission InductionPurpuraAzathioprineGraves DiseaseNose DiseasesMethimazoleTakayasu ArteritisHIV AntibodiesRetrospective StudiesGlucocorticoidsFollow-Up StudiesKidney DiseasesAntibodies, NeoplasmSeverity of Illness IndexAntibodies, ProtozoanHemoptysisRisk AssessmentImmune SeraNecrosisPlasmapheresisCross ReactionsTime FactorsKidneyPancreatic ElastaseHemorrhageDrug Therapy, CombinationMercuric ChlorideLeukocyte ElastaseLactoferrinDrug ContaminationReceptors, IgG