VasculitisAntibodies, Antineutrophil CytoplasmicAnti-Neutrophil Cytoplasmic Antibody-Associated VasculitisMyeloblastinWegener GranulomatosisAntibodiesChurg-Strauss SyndromeSystemic VasculitisRetinal VasculitisMicroscopic PolyangiitisAntibody SpecificityPolyarteritis NodosaPeroxidaseGlomerulonephritisVasculitis, Central Nervous SystemFluorescent Antibody Technique, IndirectAntibodies, MonoclonalAutoantibodiesAntibodies, ViralPropylthiouracilSerine EndopeptidasesVasculitis, Leukocytoclastic, CutaneousAntibodies, BacterialNeutrophilsAntithyroid AgentsPurpura, Schoenlein-HenochEnzyme-Linked Immunosorbent AssayFluorescent Antibody TechniqueAntibody FormationAntibodies, AntinuclearAntibodies, NeutralizingSkin Diseases, VascularImmunoglobulin GImmunosuppressive AgentsAutoimmune DiseasesAutoantigensAntibody AffinityNeutrophil ActivationBiological MarkersEndocarditis, Subacute BacterialAntibodies, Anti-IdiotypicAntibodies, Monoclonal, Murine-DerivedColitis, UlcerativeRheumatoid VasculitisLysosomal-Associated Membrane Protein 2PrednisoloneCyclophosphamideSensitivity and SpecificityAntibodies, FungalBinding Sites, AntibodyEpitopesRespiratory BurstPlasma ExchangeCathepsin GBiopsyRecurrenceMethylprednisoloneLung DiseasesHIV AntibodiesCryoglobulinemiaArteritisGraves DiseaseAntigen-Antibody ComplexAntibodies, NeoplasmAntibodies, ProtozoanImmunoglobulin MTreatment OutcomeLupus Erythematosus, SystemicScleritisMethimazoleNose DiseasesImmune SeraRemission InductionRisk AssessmentCross ReactionsFollow-Up StudiesPancreatic ElastaseTime FactorsHemoptysisFixativesAzathioprineLactoferrinRetrospective StudiesImmunoglobulin Fab FragmentsSeverity of Illness IndexLeukocyte ElastaseKidney DiseasesMucocutaneous Lymph Node SyndromeEosinophilia-Myalgia SyndromeGlucocorticoidsKidneyReceptors, IgGPredictive Value of TestsMolecular Sequence DataDrug ContaminationAntigen-Antibody ReactionsCholangitis, SclerosingHemorrhageFocal InfectionNeutralization Tests