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Figure 5 Effect of sildenafil on surface expression of activated platelet glycoprotein IIb/IIIa receptors illustrated by the percentage of platelets binding FITC-conjugated PAC-1 antibodies. ADP = adenosine diphosphate; TRAP = thrombin receptor activator peptide. Black bars = pre-sildenafil; white bars = post-sildenafil. *p < 0.05, **p < 0.01, NS = not significant.
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