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For sensitive analysis of cancer biomarker carcinoembryonic antigen (CEA), an amperometric sandwich‐type aptasensor is proposed based on a signal amplification strategy of Au@Pt bimetallic nanoprobes. As the excellent catalytic activity to hydrogen peroxide (H2O2), core‐shell Au@Pt nanoparticles are employed as nanoprobes by conjugating directly with the secondary aptamer of CEA (Apt‐II). Due to the...
Point‐of‐care testing (POCT) is becoming a hot research topic that allows rapid, on‐site, and non‐professional measurements outside the central laboratory. The micro‐fabricated devices prepared by various micro‐machining technologies have shown the advantages of low reagent consumption, high‐throughput samples, and wearability. This review presents the recent progress of electrochemical biosensors...
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