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Concentration-dependent effect of ferulic acid (FA, 10−8−10−3 M) on KCl-precontracted internal mammary artery (IMA) rings with endothelium. (A) Original traces of the experiment. (B) Cumulative dose-response curve. The results are presented as the means ± SEM (n=5). #P<0.01 compared with controls (♦).
