Table 2.

Oocyte water and ion concentrations

Water, mg or μl	0.58 ± 0.02	n = 5*
Na+, mM	10 ± 0.7	n = 20
K+, mM	79 ± 0.9	n = 19
Cl−, mM	39 ± 1.2	n = 24

Values are means ± SE. The water content was measured using the fresh weight/dry weight method and correcting for extracellular water. Ion concentration was determined in single oocyte using isotope (²²Na, ⁸⁶Rb, and ³⁶Cl) equilibrium.

^*Water was measured using 5 groups of 10 oocytes.