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The goal of this work was to introduce a modified electrochemical sandwich model for target protein detection, exploiting antibody as the capturing probe, aptamer as the detection probe and methylene blue as the electrochemical active marker intercalating in the probing aptamer without previous labeling. With appropriate design of the sequence of the aptamer, the aptamer was successfully utilized...
In this work, a label-free electrochemical sensor based on target-induced displacement is reported with adenosine as the model analyte. The sensing substrate is prepared using a gold electrode modified with a self-assembled monolayer of 1,6-hexanedithiol that mediates the assembly of a gold nanoparticle film, which can increase the surface loading of capture probe and enhance the signal. An aptamer...
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