Blood PlateletsAdenosineReceptor, Adenosine A2AReceptor, Adenosine A1Platelet AggregationAdenosine DeaminaseReceptor, Adenosine A3Adenosine A2 Receptor AgonistsReceptor, Adenosine A2BPurinergic P1 Receptor AgonistsAdenosine A1 Receptor AgonistsAdenosine KinaseReceptors, Adenosine A2Receptors, Purinergic P1Adenosine A2 Receptor AntagonistsAdenosine A1 Receptor AntagonistsPlatelet CountPlatelet AdhesivenessPurinergic P1 Receptor AntagonistsXanthinesAdenosine-5'-(N-ethylcarboxamide)Adenosine MonophosphatePlatelet Membrane GlycoproteinsAdenosine A3 Receptor AgonistsPhenethylaminesSerotonin Receptor AgonistsReceptors, PurinergicDopamine AgonistsTheophyllineAdenosine A3 Receptor AntagonistsPlatelet Factor 4Dose-Response Relationship, DrugCyclic AMPSerotonin 5-HT1 Receptor AgonistsPlatelet TransfusionPhenylisopropyladenosine2-ChloroadenosineSerotonin 5-HT2 Receptor AgonistsPlatelet Activating FactorPlatelet Function TestsPlatelet Glycoprotein GPIIb-IIIa Complex5'-NucleotidaseRats, Sprague-DawleyInosineThrombinPurinergic P2 Receptor AgonistsPlatelet Glycoprotein GPIb-IX ComplexGABA AgonistsAdenine NucleotidesGABA-A Receptor AgonistsTubercidinGABA-B Receptor AgonistsCannabinoid Receptor AgonistsSerotonin 5-HT4 Receptor AgonistsAdenosine TriphosphatasesCalciumSerotoninKineticsRats, WistarCells, CulturedAdenosine DiphosphateAdrenergic alpha-2 Receptor AgonistsTheobromineDipyridamoleGuinea PigsHistamine AgonistsReceptors, Opioid, kappaRadioligand AssayAntigens, Human PlateletTime FactorsNucleoside DeaminasesTriazinesReceptors, Purinergic P2Muscarinic AgonistsCoformycinSignal TransductionThrombocytopeniaReceptors, Dopamine D2Serotonin AntagonistsRabbitsAdrenergic AgonistsReceptors, Opioid, muFibrinogenPurinesApyraseAdenylate CyclaseP-SelectinMegakaryocytesBaclofen2,3,4,5-Tetrahydro-7,8-dihydroxy-1-phenyl-1H-3-benzazepineBleeding TimeVasodilator AgentsMice, Inbred C57BLPentostatinPiperidinesQuinpiroleReceptors, Dopamine D1Thromboxane A2Adrenergic beta-AgonistsAdrenergic beta-3 Receptor Agonists