Fig. 8.

Dependence of (dpH_i/dt)_max and ΔpH_S on A_i and A_S. A: dependence of (dpH_i/dt)_max on A_i, for several fixed values of A_S (i.e., each set of symbols is a surface CA isopleth). B: dependence of ΔpH_S on A_i, for several fixed values of A_S (i.e., surface CA isopleths). C: dependence of (dpH_i/dt)_max on A_S, for several fixed values of A_i (i.e., intracellular CA isopleths). D: dependence of ΔpH_S on A_S, for several fixed values of A_i (i.e., intracellular CA isopleths). In these simulations, we assume that a hypothetical oocyte with the intracellular composition (i.e., initial pH_i and ΔpH_i) of a ”CA IV“ oocyte is exposed to a bulk solution containing 1.5% CO₂/10 mM HCO₃⁻. The physiological data are plotted on the ordinate as mean ± standard deviation; the position of these points along the abscissa is arbitrary.