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. 1998 Nov 1;512(Pt 3):651–667. doi: 10.1111/j.1469-7793.1998.651bd.x

Figure 6. The effects of fast application of caffeine on membrane current in TR and NON myocytes.

Figure 6

Cells were stimulated at 0.5 Hz until steady-state contraction was reached and then stimulation was stopped; 2 s after cessation of stimulation the cells were voltage-clamped at −75 mV. Caffeine superfusion was then started and maintained for 6 s. A, superimposed current density traces recorded from TR and NON myocytes. B, integrals of the currents. In TR myocytes the amount of charge crossing the cell membrane during caffeine application was larger and increased more rapidly than in NON myocytes.