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Figure 4 Bradykinin- (left) and acetylcholine- (right) mediated microvascular (top) and epicardial (bottom) vasomotion before (control solid circles with solid lines) and after L-NMMA (open circles with dashed lines, n = 20). *p = 0.03, **p = 0.003, ***p < 0.001 comparing control with L-NMMA. L-NMMA = L-NG monomethyl arginine.