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Bradykinin relaxation in the absence or presence of indomethacin (3 µM, Indo) + asymmetric dimethylarginine (ADMA; 300 µM) + oxyhaemoglobin (OxyHb; 25 µM) in porcine retinal arterioles contracted with U46619 (0.1 µM) or endothelin-1 (0.03 µM) (C). Results are mean ± SEM (n = 6–8). Two-way anova. *P < 0.05 from their respective controls.
