Platelet TransfusionBlood Platelet DisordersBlood PlateletsPlatelet AggregationPlatelet CountThrombocytopeniaBleeding TimeBlood TransfusionPlateletpheresisErythrocyte TransfusionPlatelet AdhesivenessBlood Component TransfusionAntigens, Human PlateletPlatelet Membrane GlycoproteinsThrombocytopenia, Neonatal AlloimmuneIsoantibodiesBlood Transfusion, IntrauterineBlood Transfusion, AutologousHemorrhagePlatelet Factor 4Blood Grouping and CrossmatchingBlood PreservationExchange Transfusion, Whole BloodPlatelet Function TestsPlatelet Activating FactorPlatelet Glycoprotein GPIIb-IIIa ComplexHematologyPlatelet Glycoprotein GPIb-IX ComplexBlood Component RemovalThrombinHemostasisThrombopoietinBlood DonorsMegakaryocytesBlood Group IncompatibilityAnemia, AplasticThrombastheniaAdenosine DiphosphateThrombopoiesisFetofetal TransfusionAnemia, RefractoryBlood Loss, SurgicalFibrinogenLeukemiaHLA AntigensP-SelectinThrombelastographyInterleukin-11LeukapheresisPurpura, Thrombocytopenic, IdiopathicHematopoietic Stem Cell TransplantationPancytopeniaABO Blood-Group SystemTime FactorsThrombosisvon Willebrand FactorNeonatologyTreatment OutcomePlatelet Membrane Glycoprotein IIbGranulocyte Colony-Stimulating FactorRetrospective StudiesPlatelet Factor 3SplenectomyHistocompatibility TestingBone Marrow TransplantationThromboxane A2AspirinBlood CoagulationTransplantation, AutologousCollagenIsoantigensRecombinant ProteinsLeukocyte TransfusionDisseminated Intravascular CoagulationLeukemia, MyeloidBlood BanksAcute DiseaseSerotoninCyclophosphamideProspective StudiesReceptors, Purinergic P2Y12Myelodysplastic SyndromesRistocetinPlatelet Storage Pool DeficiencyLeukocyte CountLeukocytesImmunizationBone Marrow DiseasesAntibodiesPurpura, ThrombocytopenicAntigens, CD34HemoglobinsAntineoplastic Combined Chemotherapy ProtocolsInfant, NewbornTransplantation, HomologousHematopoiesisBlood Coagulation DisordersLymphoma, Non-HodgkinBlood Cell CountAnemia