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Figure 2 (a) Mean plasma lipid-derived FR levels in patients with nonischemic CHF before and after short-term vitamin C (VC) therapy versus those subjects receiving placebo. *p < 0.05. (b) Mean plasma TBARS in patients with nonischemic CHF before and after short-term VC therapy versus those subjects receiving placebo. (c) Mean O2– generation by activated neutrophils in patients with nonischemic CHF before and after short-term VC therapy versus those subjects receiving placebo. Data are shown as the mean value ± SEM. Solid bar = baseline; open bar = after treatment.