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. Author manuscript; available in PMC: 2015 Jun 14.
Published in final edited form as: Circ Res. 2013 Mar 26;112(10):1310–1322. doi: 10.1161/CIRCRESAHA.112.300227

Figure 4. Effects of tetraethylammonium (TEA) on Purkinje fiber cell (PC) and ventricular myocyte (VM) Ito.

Figure 4

Representative recordings of Ito before (CTL, top) and after (bottom) 10-mmol/L tetraethylammonium (TEA) perfusion in freshly isolated PCs A, or VMs B. Currents were obtained with 100-millisecond depolarizations from a holding potential of −50 mV at 0.1 Hz. Mean±SEM Ito density-voltage relations before and after 10-mmol/L TEA at day 0 (C and D) and day 2 (E and F) from PCs (left) and VMs (right). *P<0.05, CTL vs 10 mmol/L TEA. CTL indicates control; TP, test potential.