Effect of genistein on voltage-gated potassium channels in guinea pig proximal colon smooth muscle cells

Figure 6 Effect of genistein (50 µmol/L) on current-voltage relationship of delayed rectifier potassium current (I_Kdr) in guinea pig proximal colon smooth muscle cells in the presence of 4-AP (5 mmol/L) and Cd²⁺ (0. 2 mmol/L). A: I-V curves of peak current density of voltage-gated potassium channels under control condition, in the presence of 5 mmol/L 4-AP as well as 5 mmol/L 4-AP and 50 µmol/L genistein; B: I-V curves of steady state current density of voltage-gated potassium channels under control condition, in the presence of 5 mmol/L 4-AP as well as 5 mmol/L 4-AP and 50 µmol/L genistein. n = 4 cells.