Figure 6
![Figure 6](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1423-0127-16-114/MediaObjects/12929_2009_Article_114_Fig6_HTML.jpg)
Delayed outward K+ current (I K ) activated on depolarization in LA-PV healthy (panel A) and myopathic myocytes (panel B). Clamp protocol is shown at the top of panel B. IK was measured near the end of the 1 s depolarizing pulses. Downward solid triangle indicated IK recorded at test potential of +60 mV. In contrast, open triangle indicated ITO in the same myocytes. Panel C shows the mean current-voltage relations of IK in 45 healthy (closed circles) and 34 myopathic myocytes (open circles).