Effect of S-nitroso-AR545C on rabbit platelet aggregation ex vivo. Female rabbits were injected with 0.5 mg/kg S-nitroso-AR545C and blood samples were collected before and at different time intervals after the injection. Platelet aggregation was induced in PRP with 5 μmol/L ADP. Results are expressed as mean ± SEM for n = 3 animals.