AspirinAcidsHydrogen-Ion ConcentrationPlatelet Aggregation InhibitorsSalicylatesAnti-Inflammatory Agents, Non-SteroidalCyclooxygenase InhibitorsPlatelet AggregationProstanoic AcidsThromboxanesThromboxane B2TiclopidineBlood PlateletsDipyroneSalicylic AcidSodium SalicylatePlatelet Function TestsFibrinolytic AgentsProstaglandinsAcetaminophenThromboxane A2Prostaglandin-Endoperoxide SynthasesIndomethacinAnticoagulantsDipyridamoleAntipyreticsGastrointestinal HemorrhagePiroxicamProstaglandins EBleeding TimeCyclooxygenase 1Drug HypersensitivityStomach Diseases6-Ketoprostaglandin F1 alphaDrug InteractionsDose-Response Relationship, DrugThrombosisEpoprostenolDinoprostonePhenacetinArachidonic AcidsThromboembolismArachidonic AcidIbuprofenGastric MucosaAcetic AcidDouble-Blind MethodTime FactorsRandom AllocationCyclooxygenase 2 InhibitorsAnalgesicsCerebrovascular DisordersPlatelet AdhesivenessWarfarinDiclofenacCyclooxygenase 2Anti-Inflammatory AgentsStomach UlcerIschemic Attack, TransientAdenosine DiphosphateDrug Therapy, CombinationTreatment OutcomePlacebosGastrointestinal DiseasesHemorrhagePeptic UlcerPlatelet ActivationAnalgesics, Non-NarcoticDrug ResistancePyrazolesProspective StudiesCross-Over StudiesClinical Trials as TopicIndicators and ReagentsMyocardial InfarctionSulfonamidesRisk FactorsRabbitsGentisatesHeparinStrokeCardiovascular DiseasesCanadaPainSerotoninNitric OxideCollagenThrombinFollow-Up StudiesChromatography, High Pressure LiquidIsoenzymesRetrospective StudiesDisease Models, AnimalNanofibersCells, CulturedKineticsAbsorbable Implants