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Voltage-dependent short block occurrences for Ctrl-2 in monovalent cations K+, Na+, NH4+ and divalent cation Ba2+. The concentration of DNA was 2.5 μM and all the occurrences were measured from +90 mV to +180 mV in 1 M salt solution buffered with 10 mM Tris (pH 7.2).
