Internal cesium alters sodium inactivation in Myxicola. |
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| Authors: | C L Schauf and J O Bullock |
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| Abstract: | When Myxicola giant axons are internally dialyzed with Cs+ as the sole cation, the time-course of prepulse inactivation is selectively accelerated compared to its rate with K+ dialysis in the same axons. This decrease in tauph occurs without any change in the magnitude or time-course of INa during step depolarizations and results in tauph/taush ratios near unity over most of the potential range in Cs+ dialyzed axons. |
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