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. 2011 Feb 22;6(2):e16734. doi: 10.1371/journal.pone.0016734

Figure 4. Pharmacological responses of human iPSC-derived cardiomyocytes.

Figure 4

Field potential recordings of replated beating colonies after stimulation with isoproterenol (A), propranorol (B), and E-4031 (C). Photos; array of multi-electrode and replated colonies. Data recorded at electrodes in red squares are shown. A, B. Beating frequency (beating/minite). C. QT elongation. The time period from the first negative peak (open triangle) to the first positive peaks (closed triangles) reflects QT time in electrocardiogram. n = 3, †, p<0.001.