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Figure 3 Change in platelet membrane esterified 8-epi prostaglandin F₂ (isoprostane) content after 72 h of nonintermittent transdermal nitroglycerin (NTG) (10 mg/24 h) with co-administration of placebo (NTG/placebo) or ascorbic acid (NTG/ascorbate). Data are presented as the mean value (95% CI). *p < 0.05.