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Figure 2


Fig. 2. Effects of Ca2+ inflow on the fluctuations of membrane potential. The fluctuation of membrane potential at the resting level was recorded for 5 min, and a fluctuation histogram from the mean potential level was calculated. (A) Fluctuation of membrane potential and (B) a fluctuation histogram using standard solution as the control. (C) Membrane potential fluctuation and (D) a fluctuation histogram in the presence of 5 µmol l–1 Ruthenium Red. (E) Membrane potential fluctuation and (F) a fluctuation histogram recorded from the anterior fragment of the cell. (G) Membrane potential fluctuation and (H) a fluctuation histogram recorded from the posterior fragment of the cell. Fluctuation amplitudes corresponding to the full width at half maximum (FWHMs) of the distributions are shown on the right side of the histograms.





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