NephritisLupus NephritisGlomerulonephritisGlomerular MesangiumKidney GlomerulusHeymann Nephritis Antigenic ComplexProteinuriaLupus Erythematosus, SystemicAntibodies, AntinuclearKidneyPurpura, Schoenlein-HenochMice, Inbred NZBNephritis, HereditaryMice, Inbred MRL lprGlomerulonephritis, MembranoproliferativeAutoantibodiesBasement MembraneAntigen-Antibody ComplexImmune Complex DiseasesGlomerulonephritis, MembranousKidney TubulesImmunoglobulin GAnti-Glomerular Basement Membrane DiseaseBiopsyImmunosuppressive AgentsComplement C3Complement C1qSerum SicknessGlomerulonephritis, IGAMycophenolic AcidPrednisoloneAzathioprineGlomerular Basement MembraneAutoimmune DiseasesDisease Models, AnimalFluorescent Antibody TechniqueAutoantigensCreatinineComplement System ProteinsCyclophosphamideKidney DiseasesRats, Inbred LewAntigens, Thy-1HematuriaNephrotic Syndrome