Figure 8. Increased background current and reduced ACh-activated current in myocytes overexpressing GIRK4 (Kir3.4).
A, representative current recordings from two myocytes infected with the empty virus (A) and Ad-Kir3.4 (B). C, summarized data showing IK(ACh) and Ba2+-sensitive background current (IBa) as fraction of total current (n = 8 for each group).