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Figure 1 (A) Distribution of post-treatment platelet aggregation as measured by 5 µM adenosine diphosphate (ADP)-induced aggregation. Distribution is shifted leftward for the 600-mg group, indicating lower reactivity to ADP. (B) Distribution of post-treatment platelet aggregation as measured by 20 µM ADP-induced aggregation. Distribution is shifted leftward for the 600-mg group, indicating lower reactivity to ADP.