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An electrochemical aptasensor was developed for sensitive and specific detection of thrombin by combining homogenous recognition strategy and gold nanoparticles (AuNPs) amplification. Streptavidin‐alkaline phosphatase was used as reporter molecule. Compared with the traditional hairpin aptasensor monitoring the distance of the redox molecule from the electrode surface, the proposed aptasensor successfully...
A sensitive and specific electrochemical biosensor based on target‐induced aptamer displacement was developed for direct detection of Escherichia coli O111. The aptamer for Escherichia coli O111 was immobilized on a gold electrode by hybridization with the capture probe anchored on the electrode surface through Au‐thiol binding. In the presence of Escherichia coli O111, the aptamer was dissociated...
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