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Plasma concentrations of NOx (Nitrate+Nitrite) in elderly rats. At 15 months of age (INITIAL) and after 1 year of supplementation with dietary nitrate (12 MONTHS) a significant increase in plasma concentration (*) was identified in both sexes after chronic supplementation with inorganic nitrate NaNO3, 10 mM compared to control and baseline. Values are expressed as mean ± SEM.
