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Changes in plasma nitrite 30 min (A) (time × treatment P < 0.001; subset of subjects: placebo n = 7, nitrite 80 mg/day n = 6, nitrite 160 mg/day n = 9) and 12–18 h (B) (time × treatment P = 0.070) after capsule ingestion at baseline (Base) and week 10 (Wk10). *P < 0.05 vs. group base.
