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. 1998 Mar 1;111(3):441–450. doi: 10.1085/jgp.111.3.441

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pH dependence of T8ST9G CTX block of F425H channels. Currents before, during, and after application of 0.25 μM T8ST9G CTX recorded at 0, 20, and 40 mV are shown at pH 5 (top) and 7 (bottom).