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A, effect of l-NMMA, ISDN, and sildenafil on FBF response to exogenous bradykinin in all subjects. Neither ISDN nor sildenafil altered the FBF response to bradykinin during l-NMMA. B and C, effect of l-NMMA on FBF response to exogenous bradykinin in women (B) and men (C). ANOVA results are for the comparison between women and men.
