Figure 3. Logarithmic plot of amperometric current vs miR-21 concentration for (A) EMRS and (B) ssDNA probe-based sensor.
Error bars represent standard deviations for measurements taken from at least three independent experiments. (C) Comparison of reproducibility between EMRS and ssDNA-based sensor by testing over 30 times for miR-21 (10 pM). Standard deviations for both sensors stand for the difference between the real current and mean current.