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NO scavenger cPTIO blocks inactivation of IK,in and activation of ICl by ABA and NO but not ABA-mediated activation of IK,out. Steady-state current determined as described for Fig. 1 for IK,out at +30 mV, IK,in at -200 mV, and ICl at -70 mV (shaded bars) (21) summarizes effects of a 10-min exposure to ABA with (n = 9) or without 20 μM cPTIO (n = 8) (Left) and to 10 μM SNAP with (n = 7) or without 20 μM cPTIO (n = 27) (Right).
