Lupus Erythematosus, SystemicLupus NephritisAntibodies, AntinuclearAutoantibodiesLupus Vasculitis, Central Nervous SystemLupus Erythematosus, DiscoidMice, Inbred NZBAntibodies, AnticardiolipinMice, Inbred MRL lprAntiphospholipid SyndromeAntibodies, AntiphospholipidAutoantigensAutoimmune DiseasesImmunoglobulin GHydroxychloroquineComplement C4snRNP Core ProteinsAutoimmunityAntigen-Antibody ComplexLupus Coagulation InhibitorRheumatic DiseasesNephritisArthritis, RheumatoidComplement C1qB-LymphocytesSjogren's SyndromeSeverity of Illness IndexComplement C3PrednisoloneImmunosuppressive AgentsDNARNA, Small CytoplasmicImmunoglobulin MConnective Tissue DiseasesCardiolipinsEnzyme-Linked Immunosorbent AssayGenetic Predisposition to DiseaseCase-Control StudiesB-Cell Activating FactorGlomerulonephritisMixed Connective Tissue DiseaseComplement C4aCollagen DiseasesSerositisbeta 2-Glycoprotein IScleroderma, SystemicProteinuriaRibonucleoproteins, Small NuclearRibonucleoproteinsBiological MarkersComplement System ProteinsVasculitisPhotosensitivity DisordersT-LymphocytesAntibody SpecificityCryoglobulinsLupus Erythematosus, CutaneousReceptors, IgGAdrenal Cortex HormonesAzathioprineKidneyMethylprednisolonePlasmapheresisB-Lymphocyte SubsetsInterferon Regulatory FactorsLupus VulgarisKidney GlomerulusLymphocyte ActivationAntibodiesAntibodies, MonoclonalComplement C4bMyelitis, TransversePrednisonePolymorphism, Single NucleotideAntibodies, Anti-IdiotypicDisease Models, AnimalRisk FactorsGlucocorticoidsComplement C2GenotypeInterferon-alphaFlow CytometryAnemia, Hemolytic, AutoimmuneMice, CongenicCohort StudiesMycophenolic AcidBiopsyImmunoglobulin IdiotypesAllelesThrombosisTumor Necrosis Factor Ligand Superfamily Member 13Polymorphism, GeneticReceptors, Complement 3bCyclophosphamideBlood Coagulation FactorsBlood SedimentationThrombocytopeniaImmunoglobulinsRheumatoid FactorFluorescent Antibody Technique