The Journal of General Physiology
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The Journal of General Physiology, Vol 49, 309-320, Copyright © 1965 by The Rockefeller University Press

ARTICLE

Interaction between the Effects of Inside and Outside Na and K on Bullfrog Skin Potential

Daniel E. Leb 1, Charles Edwards 1, Barry D. Lindley 1, T. Hoshiko 1, and with the technical assistance of James A. Dugan

1 From the Department of Physiology, Western Reserve University School of Medicine, Cleveland, Ohio, and the Department of Physiology, University of Minnesota Medical School, Minneapolis, Minnesota.

Dr. Leb's present address is the Department of Medicine, University of Louisville School of Medicine, Louisville, Kentucky

The composition of the solution bathing one border of the isolated frog skin affects the response of the potential across the skin to changes in the composition of the solution bathing the opposite border. Increasing the K concentration of the inside (corium) bathing solution decreased the sensitivity of the potential to a change in outside Na concentration. Decreasing the outside Na concentration decreased the sensitivity of the potential to a change in inside K concentration. Increasing the total ionic strength of the outside bathing solution or of both bathing solutions decreased the sensitivity of the potential to a change in outside Na concentration.

Submitted on June 29, 1964


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