Figure 5. Amiloride-induced voltage shifts in oocytes expressing ENaC and CFTR.
The diagram shows predicted membrane voltage shifts induced by amiloride removal (ΔVamil, vertical arrows) for oocytes under current-clamp condition with CFTR inactive or after CFTR activation. ΔVamil was calculated as described in the Discussion. ENa and ECl (dashed lines) represent Nernst potentials for Na+ and Cl−, respectively.