Platelet Membrane GlycoproteinsBlood PlateletsPlatelet AggregationThrombastheniaPlatelet Glycoprotein GPIIb-IIIa ComplexPlatelet Glycoprotein GPIb-IX ComplexEndothelial CellsEndothelium, VascularCell MembraneEndotheliumUmbilical VeinsPlatelet AdhesivenessCells, CulturedFibrinogenvon Willebrand FactorPlatelet CountAntigens, Human PlateletAntibodies, MonoclonalCapillariesThrombinGlycoproteinsImmunoglobulin Fab FragmentsCattlePlatelet Aggregation InhibitorsAdenosine DiphosphateBleeding TimeRistocetinThrombocytopeniaPlatelet ActivationCrotalid VenomsPlatelet Factor 4Molecular Sequence DataPlatelet TransfusionMegakaryocytesThrombosisPlatelet Membrane Glycoprotein IIbAmino Acid SequencePlatelet Function TestsP-SelectinEpitopesPlatelet Activating FactorBernard-Soulier SyndromeMembrane ProteinsIntegrin alpha2MembranesMembrane LipidsCell AdhesionBenzamidinesProtein BindingCollagenPeptidesIntegrin beta3AspirinOligopeptidesIntracellular MembranesMembrane GlycoproteinsCell LineBinding SitesCell Membrane PermeabilityRecombinant ProteinsMembrane PotentialsPeptide FragmentsMolecular WeightCalciumHeparinKineticsHuman Umbilical Vein Endothelial CellsCricetinaePurpura, Thrombocytopenic, IdiopathicHemorheologyErythrocyte MembraneFlow CytometryBlood CoagulationElectrophoresis, Polyacrylamide GelMembranes, ArtificialPurpura, ThrombocytopenicTyrosineReceptors, Cell SurfaceFibrinolytic AgentsDual Specificity Phosphatase 2Base SequenceDose-Response Relationship, DrugTime FactorsHemorrhageSignal TransductionIntegrinsCHO CellsReceptors, VitronectinMicroscopy, ElectronFluorescent Antibody TechniqueMembrane FluidityHemostasisRabbitsvon Willebrand DiseasesAntibodiesReceptors, CollagenImmunosorbent TechniquesDogsThrombospondinsBlotting, Western