Fig. 4. Dose-dependent effects of thiamylal on the activities of reconstituted sulfonylurea receptor (SUR) 1/inwardly rectifying potassium channel (Kir) 6.2 (a ), SUR2A/Kir6.2 (b ), SUR2B/Kir6.2 (c ), and SUR2B/Kir6.1 (d ) channels. Each vertical bar  constitutes measurements from 15–21 patches (mean ± SD). *P < 0.05 versus  control (before thiamylal).