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Effect of combining doses of L-type calcium and hERG blockers (control, 1× IC50, 2× IC50, 10× IC50, 30× IC50) on the QT interval (units are mV, ms, and ms, respectively) (A), on the APD90 (B), and on the maximum dispersion of the transmembrane potential during the repolarization phase (C). The APD90 is computed from a point located at the base of the left ventricle.
