Fig. 3.
(A) DPV signals based on turn-off method in 1.0 mM [Fe(CN)6]3-/4- containing 0.1 M KCl for different concentrations of ssDNA Target. (B) The resulting calibration plots for log [C] vs. DPV responses in the range of 10−18 -10−9 M. (C) DPV signals based on turn-on method in 0.01 M PBS (pH 7.4) for different concentrations of ssDNA Target. (D) The resulting calibration plots for log [C] vs. DPV responses in the range of 10−18 -10−9 M. The error bars represent the standard deviations measured by three independent measurements. (E) DPV signals based on turn-off method for the complementary target, two-mismatch, five-mismatch, Non-complementary of 10−12 M, and IAV isolated from clinical sample (F) DPV signals based on turn-on method for the complementary target, two-mismatch, five-mismatch, Non-complementary of 10−12 M, and IAV isolated from clinical sample.