Figure 5. ZLN005-treated hESC-CMs exhibited more negative resting membrane potential compared with control. (A) Representative spontaneous action potential traces from control (red trace) and ZLN005-treated (black trace) hESC-CMs. (B–E) Action potential properties of control and ZLN005-treated hESC-CMs: the resting membrane potentials (B), peak amplitude (C), velocity of upstroke (D), action potential durations at 90% repolarization (APD90) (E) n=24-54 cells for each group.