Figure 4From: Sphingosine-1-phosphate promotes the differentiation of human umbilical cord mesenchymal stem cells into cardiomyocytes under the designated culturing conditionsRepresentative recordings of action potential (A) and whole cell voltage gated inward (B) and outward currents (C) by whole cell patch clamping in myocytes of CMCM+S1P group. The currents were recorded during 200 ms step depolarization pulses from a holding potential of -50 mV to a range of potential between -40 mV and +50 mV.Back to article page