Platelet TransfusionPlatelet CountBlood PlateletsBlood TransfusionPlatelet Function TestsPlatelet AggregationThrombocytopeniaPurinergic P2Y Receptor AntagonistsPlateletpheresisThrombocytosisErythrocyte TransfusionTiclopidineBlood Component TransfusionPlatelet Aggregation InhibitorsAntigens, Human PlateletThrombocytopenia, Neonatal AlloimmuneIsoantibodiesBlood Transfusion, IntrauterineBlood Transfusion, AutologousHemorrhageBlood Grouping and CrossmatchingPlatelet AdhesivenessBlood PreservationExchange Transfusion, Whole BloodPlatelet Membrane GlycoproteinsAspirinHematologyBlood Component RemovalBlood DonorsBlood Group IncompatibilityAnemia, AplasticPlatelet Factor 4ThrombopoietinFetofetal TransfusionAnemia, RefractoryHemostasisBlood Loss, SurgicalBleeding TimeThrombastheniaLeukemiaHLA AntigensPlatelet Glycoprotein GPIIb-IIIa ComplexPlatelet Activating FactorThrombopoiesisInterleukin-11LeukapheresisMegakaryocytesPancytopeniaHematopoietic Stem Cell TransplantationABO Blood-Group SystemPlatelet Glycoprotein GPIb-IX ComplexThrombelastographyNeonatologyPurpura, Thrombocytopenic, IdiopathicGranulocyte Colony-Stimulating FactorTreatment OutcomeThrombinTime FactorsRetrospective StudiesHistocompatibility TestingBone Marrow TransplantationSplenectomyLeukocyte TransfusionTransplantation, AutologousBlood BanksLeukemia, MyeloidAdenosine DiphosphateIsoantigensCyclophosphamideAcute DiseaseMyelodysplastic SyndromesDisseminated Intravascular CoagulationProspective StudiesImmunizationRecombinant ProteinsBone Marrow DiseasesFibrinogenAntineoplastic Combined Chemotherapy ProtocolsLeukocyte CountInfant, NewbornTransplantation, HomologousLymphoma, Non-HodgkinP-SelectinAntigens, CD34AnemiaHemoglobinsAnemia, NeonatalLeukemia, Myeloid, AcuteEtoposideErythroblastosis, FetalHematopoietic Stem Cell MobilizationAntibodiesThrombosisNeutropeniaGraft SurvivalLeukocytesPostoperative HemorrhageHematopoiesisvon Willebrand FactorHepatic Veno-Occlusive Disease