Supplemental Figure 4 E2 modifies the action potential parameters of hiPSC-CMs. (A-C) Typical APs and slope curve of hiPSC-CMs. (D-I) Values for APA, RMP, dV /dt max, APD10, APD50 and APD90. n=19-40 cells, from 4-6 petri dishes. *p < 0.05, **p < 0.01, ****p < 0.0001.