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Venous plasma RXNO (nmol·L−1) in (A) non-infused arm and (B) infused arm in normal subjects (open symbols)and CHF patients (closed symbols). RXNO concentrations did not vary significantly with NO2− infusion in either arm (F = 0.44 P = 0.99), but were significantly lower in CHF patients than in normal subjects in the non-infused arm (P = 0.04), while this difference was attenuated in the infused arm.
