Fig. 2. Concentration-response curve for genistein activation of whole cell KATPcurrent (IKATP). Currents were normalized to the maximal current at 50 μm genistein. Data points are means ± SEM of measurements from 3–16 cells. A Hill fit to the ascending part of the curve gave an EC50of 32.3 ± 1.4 μm and a Hill coefficient (nH) of 11.7 ± 5.1.