Fig. S8.

Voltage dependence of inward and outward currents. (A) Outward currents measured in the presence of 10 mM Na⁺ in the extracellular solution. Transinhibition of the outward current was tested with four different intracellular solutions: 5 mM Na⁺ (black squares), 5 mM Na⁺ plus 100 mM glucose (black circles), 150 mM Na⁺ (white squares), and 150 mM Na⁺ plus 100 mM glucose (white circles). Symbols are means and SEM (n = 9). (B) Inward currents measured in the presence 150 mM Na⁺ and 100 mM glucose in the extracellular solution. The intracellular solutions and corresponding symbols are the same as those used in A. Symbols are means and SEM (n = 9).