Figure 5.
Effect of membrane depolarization on the [Ca2+]i in the perimacular oscillatory cells. (A) Representative fura-2 ratio recording demonstrating the effect of KCl (from the lumen) on [Ca2+]i in a perimacular cTAL cell located in the terminal portion of the cTAL. (B and C) Effect of bath (B) and luminal KCl (C) on [Ca2+]i in perimacular tubular epithelial cells. ○, Fura-2 ratio values from individual cells; •, average values (n = 4, the values in the control and KCl groups were different from each other; P < 0.05).