Fig. 2

Change in action potentials and cell size during differentiation. Typical action potential recordings of P19CL6-derived cardiomyocytes (a, c) and P19CL6-Csx-derived cardiomyocytes (b, d). Developmental change in cell capacitance of P19CL6-derived cardiomyocytes and P19CL6-Csx-derived cardiomyocytes (e). Action potentials were recorded in current clamp mode in the early stage (a, b) and in the late stage (c, d) of differentiation. Each bar indicates the mean of total membrane capacitance values in the early stage (filled bars) and the late stage (open bars) in panel (e). *p < 0.05 compared with P19CL6 in the early stage