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J Physiol Vol 241, Issue 2 pp 509-514
Copyright © 1974 by The Physiological Society
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Intracellular sodium and potassium concentrations in oocytes of Bufo bufo at the beginning of maturation

 D. A. T. Dick and D. O. Ho-Yen

1. During the first phase of maturation in oocytes of Bufo bufo, after the growth phase but before ovulation, intracellular Na rises to 120 m-mole/l. cell water while K falls to 15 m-mole/l. cell water.

2. At the same time, the ouabain-insensitive Na efflux and total Na influx both increase while the ouabain-sensitive Na efflux is unchanged.






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