Fig. 8.

Cell-attached recordings of K⁺ currents elicited by minoxidil sulfate and diazoxide. Patch potential was maintained at −50 mV. Recordings failed to reveal unitary K⁺ currents before (A) or after (B) addition of DMSO solvent. In another LMC initially exposed to control solution (C), the addition of 0.1 µmol/l minoxidil sulfate elicited unitary K⁺ currents (D). Similarly, recordings in control solution were quiescent (E), whereas the addition of 3 µmol/l diazoxide elicited a current of similar amplitude as minoxidil sulfate (F).