TEA-sensitive whole cell currents in Sgk1+/+ and Sgk1−/− mice. A, top: currents with and without 5 mM TEA from an intercalated cell of a CCD in an Sgk1+/+ mouse fed a high-K diet. A, bottom: I-V relationships. Solid symbols represent TEA-sensitive currents. B, top: currents with and without 5 mM TEA from an intercalated cell of a CCD in an Sgk1+/+ mouse fed a high-K diet. B, bottom: I-V relationships. IBK represents TEA-sensitive currents. C: quantitation of TEA-sensitive currents, measured at +60 mV. Data are represented as means ± SE for 8–10 cells.