Fig. 3. (A) Pooled data from 27 preparations showing SNAP effects on skin cell impulse duration (A) and delay from stimulus (B) and skin cell resting potential (C). In each preparation measurements of each parameter were taken with sharp microelectrodes from at least 8 different skin cells in control (blue diamond), SNAP (magenta square) and wash (green triangle) conditions. Single representative values for each parameter in each condition were obtained from each preparation as the average of the duration and resting potential measurements, and the least-squares regression slope of the delay measurements. Values are means ± s.e.m. of these representative values.