Figure 4From: Resistance to aspirin is increased by ST-elevation myocardial infarction and correlates with adenosine diphosphate levels(a) Correlation between extracellular total purine levels and platelet activity measured as closure time with the ADP-COLL cartridge. (b) Correlation between extracellular ADP levels and platelet activity measured as closure time with the ADP-COLL cartridge.Back to article page