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. 2012 Mar;139(3):245–259. doi: 10.1085/jgp.201110736

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© 2012 Liu et al.

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Figure 4. — Concentration dependence of the kinetics of spermidine block. (A) Single-channel currents recorded in the presence of 0.03, 0.1, and 0.3 µM [spermidine]_i at +50 mV. (B) Histograms for the substate and blocked times at 0.03 and 0.3 µM [spermidine]_i. (C) Dose dependence of association and dissociation rates.