Different Membrane Pathways Mediate Ca²⁺ Influx in Adrenal Chromaffin Cells Exposed to 150–400 ns Electric Pulses

Figure 9

YO-PRO-1 uptake into cells exposed to 150 ns pulses. Cells were exposed to twenty, 150 ns pulses (1 Hz pulse repetition rate) in the presence of 2 μM YO-PRO-1 at either 3.1 or 9.7 kV/cm. In (a) results are plotted as the averaged cell responses ± SE (3.1 kV/cm, and 9.7 kV/cm, ). Arrows indicate when the pulse train was delivered. In (b) representative bright field images of the cells before (0 s) and 280 s after the pulse train are shown.

(a)

(b)