Lupus Erythematosus, SystemicPanniculitis, PeritonealLupus NephritisHistiocytosisLupus Erythematosus, DiscoidAntibodies, AntinuclearLupus Erythematosus, CutaneousErythema NodosumAutoantibodiesErythema InduratumPanniculitis, Lupus ErythematosusLupus Vasculitis, Central Nervous SystemPancreatitis, AlcoholicHistiocytesCytophagocytosisMice, Inbred NZBPrednisoloneAntibodies, AnticardiolipinHydroxychloroquineAntiphospholipid SyndromeAntibodies, AntiphospholipidAutoantigensAutoimmune DiseasesSkin DiseasesMice, Inbred MRL lprImmunoglobulin GErythemaImmunosuppressive AgentsComplement C4snRNP Core ProteinsLupus Coagulation InhibitorAntigen-Antibody ComplexGnathostomiasisAutoimmunityRheumatic DiseasesPanniculitis, Nodular NonsuppurativeDermatomyositisPanniculitisArthritis, RheumatoidBiopsyNephritisComplement C1qSjogren's SyndromeSeverity of Illness IndexB-LymphocytesComplement C3RNA, Small CytoplasmicDNAImmunoglobulin MSkinConnective Tissue DiseasesFatal OutcomePhotosensitivity DisordersEnzyme-Linked Immunosorbent AssayCase-Control StudiesRemission, SpontaneousGenetic Predisposition to DiseaseCardiolipinsB-Cell Activating FactorLymphoma, T-Cell, CutaneousCollagen DiseasesPancreatitis, Acute NecrotizingMixed Connective Tissue DiseaseComplement C4aSerositisGlomerulonephritisScleroderma, SystemicSyndromeRibonucleoproteinsbeta 2-Glycoprotein IRibonucleoproteins, Small NuclearBiological MarkersComplement System ProteinsVasculitisLupus VulgarisAntibody SpecificityProteinuriaT-LymphocytesCryoglobulinsAdrenal Cortex HormonesReceptors, IgGAzathioprineCyclosporinePlasmapheresisMethylprednisolonealpha 1-AntitrypsinB-Lymphocyte SubsetsInterferon Regulatory FactorsKidneyTomography, X-Ray ComputedPolymorphism, Single NucleotideComplement C4bLymphocyte ActivationAntibodiesPrednisoneAntibodies, MonoclonalMyelitis, TransverseComplement C2GlucocorticoidsAntibodies, Anti-Idiotypic