Abstract
IT has been observed that the depolarizing effect of cæsium ions on membrane potential of frog muscle fibres increases when external sodium concentration is replaced by a so-called inert osmotic substitute, such as choline chloride1. This dependence on sodium choline of the depolarization of cæsium was in contrast to the independence of the sodium–choline observed on the potassium depolarization.
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References
Portela, A., Perez, J. C., Stewart, P., and Hines, M., Exp. Cell Res. (in the press).
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PORTELA, A., PEREZ, J. & STEWART, P. Cæsium–Choline Interaction on Muscle Membrane. Nature 199, 815–816 (1963). https://doi.org/10.1038/199815b0
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DOI: https://doi.org/10.1038/199815b0
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