Fig. 5. Exponential analysis of whole cell currents reveals two conductances. (A) Exponential fits on representative currents elicited from a 60 mV (Low Cl^-) or 63 mV (ASW). The ASW trace was successfully fit with a double exponential, and the Low Cl^- trace could be fit successfully with a single exponential (B). Examination of the amplitudes and time constants for each current (fast and slow) (B) reveals that in the Low Cl^- bath the fast current disappears.