Figure 2.

Inhibition of Na⁺-dependent pH_i recovery by cytosolic Na⁺. (A) Dependency of the Na⁺-dependent pH_i recovery on pipette Na⁺. (B) The effects of inclusion of 20 mM NMDG⁺ in the Na⁺-free pipette solution, or of buffering intracellular and extracellular Ca²⁺ to zero by the inclusion of 20 mM 1,2-bis(2-aminophenoxy)ethane-N,N,N′,N′-tetraacetate (BAPTA) in the pipette solution and 1 mM EGTA in the bath solution. No Ca²⁺ was added to either solution.