GlomerulonephritisGlomerulonephritis, IGAGlomerulonephritis, MembranoproliferativeGlomerulonephritis, MembranousGlomerulosclerosis, Focal SegmentalProteinuriaBiopsyKidney GlomerulusImmune Complex DiseasesAnti-Glomerular Basement Membrane DiseaseAntibodies, Antineutrophil CytoplasmicKidneyLupus NephritisGlomerular MesangiumNephrotic SyndromeBasement MembraneAntigen-Antibody ComplexComplement C3VasculitisImmunoglobulin GAutoantibodiesNephritisSerum SicknessGlomerular Basement MembraneComplement C3 Nephritic FactorHematuriaMesangial CellsComplement System ProteinsCryoglobulinemiaMice, Inbred MRL lprLupus Erythematosus, SystemicAntibodies, AntinuclearFluorescent Antibody TechniqueAntigens, Thy-1Nephritis, InterstitialCryoglobulinsStreptococcal InfectionsDisease Models, AnimalAutoimmune DiseasesKidney DiseasesNephrosis, LipoidLupus VulgarisMice, Inbred NZBRats, Inbred WKYKidney TubulesWegener Granulomatosis