The Journal of General Physiology
Axon Instruments microelectrode amplifiers
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The Journal of General Physiology, Vol 15, 537-550, Copyright © 1932 by The Rockefeller University Press

ARTICLE

THE ACCUMULATION OF ELECTROLYTES

IV. INTERNAL VERSUS EXTERNAL CONCENTRATIONS OF POTASSIUM



A. G. Jacques 1 and W. J. V. Osterhout 1

1 From the Laboratories of The Rockefeller Institute for Medical Research

Lowering the potassium in the sea water from 0.011 M to 0.006 M caused an exit of potassium from cells of Valonia macrophysa. Sodium continued to penetrate and the ratio K ÷ Na fell off. The cells ceased to grow but there was no evidence of injury.

Increasing the external potassium brought about an increase of the internal concentration of potassium, of halide, of total cations, and of the ratio K ÷ Na inside.

These phenomena are to be expected on theoretical grounds.

Accepted on March 20, 1932


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