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Fig. 3 | The Journal of Physiological Sciences

Fig. 3

From: Membrane current evoked by mitochondrial Na+–Ca2+ exchange in mouse heart

Fig. 3

Na+-induced inward current. a Membrane currents in the absence (left) and presence (middle) of 50 mM Na+ in the bath solution. The difference currents, middle minus left, are shown in the right. b Current–voltage relationships in the absence (black) and presence (red) of 50 mM Na+ in the bath solution (n = 4). The amplitude was measured near the end of square pulses. c The difference currents derived from b (n = 4). Square pulse protocol was used in a–c. d Representative current–voltage relationships in the absence (black) and presence (red) of 50 mM Na+ in the bath solution. e The difference current derived from d. Ramp voltage pulse protocol was used in d and e. The pipette solution contained 1 μM free Ca2+ in all experiments

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