Platelet CountPlatelet TransfusionThrombocytosisBlood PlateletsPlatelet AggregationBlood TransfusionThrombocytopeniaPlatelet Function TestsPlateletpheresisPurinergic P2Y Receptor AntagonistsErythrocyte TransfusionTiclopidinePlatelet AdhesivenessBlood Component TransfusionAntigens, Human PlateletPlatelet Aggregation InhibitorsPlatelet Membrane GlycoproteinsThrombocytopenia, Neonatal AlloimmuneIsoantibodiesHemorrhagePlatelet Factor 4Blood Transfusion, AutologousBlood Transfusion, IntrauterineBlood PreservationBlood Grouping and CrossmatchingAspirinPurpura, Thrombocytopenic, IdiopathicThrombopoietinHematologyExchange Transfusion, Whole BloodBleeding TimePlatelet Glycoprotein GPIIb-IIIa ComplexMegakaryocytesPlatelet Activating FactorPlatelet Glycoprotein GPIb-IX ComplexLeukocyte CountBlood Cell CountHemostasisBlood Component RemovalThrombopoiesisThrombinAnemia, AplasticBlood DonorsBlood Group IncompatibilitySplenectomyAdenosine DiphosphateThrombastheniaFibrinogenAnemia, RefractoryThrombelastographyTime FactorsFetofetal TransfusionBlood Loss, SurgicalDisseminated Intravascular CoagulationPurpura, ThrombocytopenicTreatment OutcomeLeukemiaLeukapheresisHematopoietic Stem Cell TransplantationInterleukin-11P-SelectinPancytopeniaThrombosisRetrospective StudiesHLA AntigensGranulocyte Colony-Stimulating Factorvon Willebrand FactorBlood CoagulationABO Blood-Group SystemPlatelet Membrane Glycoprotein IIbBone Marrow TransplantationProspective StudiesRecombinant ProteinsBlood Coagulation DisordersNeonatologyTransplantation, AutologousAcute DiseaseMyelodysplastic SyndromesHistocompatibility TestingErythrocyte CountThromboxane A2CyclophosphamideHemoglobinsPlatelet Factor 3HematopoiesisLeukemia, MyeloidBone Marrow DiseasesCollagenLeukocytesBlood Coagulation TestsBone MarrowSerotoninIsoantigensLeukocyte TransfusionPlatelet Storage Pool DeficiencyRistocetinInfant, NewbornBlood BanksAntineoplastic Combined Chemotherapy ProtocolsAntigens, CD34