Figure 5.

Membrane current of rkNBC-expressing Xenopus laevis oocyte during superfusion of solutions with different levels of HCO₃ ⁻/CO₂. The protocol for changing the extracellular solutions was the same as in Fig. 2 . The standard (std) solution contained 33 mM HCO₃ ⁻/5% CO₂ (Table , Solution 2). Typical of eight experiments. V_hold = −60 mV, 22°C.