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Figure 2 Resistance to acetylsalicyclic acid (ASA) (top: 0.5 mg/ml arachionic acid, defined as 20% maximal platelet aggregation). Clopidogrel resistance (middle: 5 µmol/l adenosine diphosphate, defined as relative change between aggregation under ASA and ASA plus clopidogrel <10%). Acetylsalicyclic acid and/or clopidogrel resistance (bottom: combined results of the top and middle panels). ns = not significant; ST = stent thrombosis.