Antibodies, AnticardiolipinFluorescent Treponemal Antibody-Absorption TestCardiolipinsLupus Coagulation InhibitorAntiphospholipid Syndromebeta 2-Glycoprotein IAntibodies, AntiphospholipidAntibodiesAutoantibodiesLupus Erythematosus, SystemicAbortion, HabitualImmunoglobulin MImmunoglobulin GAntibody SpecificityThrombosisAntibodies, MonoclonalAntibodies, AntinuclearAntibodies, ViralBlood Coagulation FactorsEnzyme-Linked Immunosorbent AssayAntibodies, BacterialGlycoproteinsThrombophiliaImmunoglobulin IsotypesAntibody FormationAntibodies, NeutralizingBlood Coagulation TestsProthrombinPhospholipidsPartial Thromboplastin TimeLupus Vasculitis, Central Nervous SystemProtein S DeficiencyLeg UlcerPregnancy Complications, HematologicPregnancyAntibody AffinityCalciphylaxisActivated Protein C ResistanceThrombocytopeniaFluorescent Antibody TechniqueImmunoglobulin AAbortion, SpontaneousBinding Sites, AntibodyAntibodies, Anti-IdiotypicTransferases (Other Substituted Phosphate Groups)Pregnancy ComplicationsEpitopesAutoimmune DiseasesProtein CPrednisoloneCross ReactionsVenous ThrombosisProspective StudiesHIV AntibodiesAnticoagulantsFetal DeathImmunoglobulin IdiotypesAntibodies, NeoplasmAntibodies, ProtozoanMice, Inbred BALB CBiological MarkersCase-Control StudiesImmunization, PassiveImmunizationCerebrovascular DisordersCerebral InfarctionRisk FactorsAntigen-Antibody ComplexAntibodies, FungalMolecular Sequence DataSyndrome