Purpura, Thrombocytopenic, IdiopathicPurpura, Thrombotic ThrombocytopenicPurpura, ThrombocytopenicPurpuraPurpura, Schoenlein-HenochAutoimmune DiseasesPlatelet CountPlasma ExchangeSplenectomyThrombocytopeniaADAM ProteinsAutoantibodiesPurpura FulminansBlood PlateletsPlatelet TransfusionHemolytic-Uremic SyndromeImmunoglobulins, IntravenousPlasmapheresisDanazolPregnancy Complications, HematologicRho(D) Immune GlobulinAntigens, Human PlateletEcchymosisLupus Erythematosus, SystemicThrombopoietinvon Willebrand FactorImmunoglobulin GPurpura, HyperglobulinemicOklahomaMegakaryocytesAutoimmunityAnemia, Hemolytic, AutoimmuneAutoantigensThrombopoiesisAntibodies, Monoclonal, Murine-DerivedMetalloendopeptidasesReceptors, ThrombopoietinThrombotic MicroangiopathiesImmunologic FactorsAnemia, HemolyticSeverity of Illness IndexAntibodies, AntinuclearChronic DiseaseAdrenal Cortex HormonesAntibodies, MonoclonalPlatelet Membrane GlycoproteinsEncephalomyelitis, Autoimmune, ExperimentalSpleenRecurrenceT-LymphocytesImmunosuppressive AgentsTreatment OutcomeFatal OutcomePrednisoloneAcute DiseaseHemorrhageDisseminated Intravascular CoagulationMethylprednisoloneSjogren's SyndromeIsoantibodiesDisease Models, AnimalHematologyAntigen-Antibody ComplexPlasmaMice, Inbred C57BLB-LymphocytesArthritis, RheumatoidThrombocytosisLymphocyte ActivationHemoglobinuriaFlow CytometryRetrospective StudiesPhenazopyridineAutoimmune Diseases of the Nervous SystemNephritisImmune System DiseasesCase-Control StudiesEnzyme-Linked Immunosorbent AssayTime FactorsBlood TransfusionPlatelet Glycoprotein GPIb-IX ComplexTuberculosis, SplenicAntibody SpecificityPlatelet Aggregationgamma-GlobulinsImmunoglobulin MMice, Inbred MRL lprPrednisoneGingival HemorrhageVasculitis, Leukocytoclastic, CutaneousEpistaxisMice, KnockoutMultiple SclerosisReceptors, FcRemission InductionAntigens, CD20SteroidsMice, Inbred BALB CGenetic Predisposition to DiseaseBleeding Time