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CyPPA relaxation in the presence of asymmetric dimethylarginine (300 µM, ADMA), ADMA + oxyhaemoglobin (25 µM, OxyHb), indomethacin (3 µM, Indo), Indo + ADMA and Indo + ADMA + OxyHb in porcine retinal arterioles contracted with U46619 (0.1 µM). Results are mean ± SEM (n = 7). Two-way anova. *P < 0.05 from control.
