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In this work, a sandwich-type electrochemical aptasensor for simultaneous sensitive detection of platelet-derived growth factor (PDGF) and thrombin is fabricated. Reduced graphene oxide sheets (rGS) are used as matrices to immobilize the redox probes, which are subsequently coated with platinum nanoparticles (PtNPs) to form the PtNPs-redox probes-rGS nanocomposites. With the employment of the as prepared...
A concept based on a novel redox-biocompatible composite protein membrane fabrication, double enzyme membrane modification technique and antibody immobilization, was exploited to develop a highly sensitive amperometric enzyme immunosensor for detection of carcinoembryonic antigen (CEA). In this concept, a solution of bovine serum albumin (BSA) containing horseradish peroxidase (HRP) is coated on the...
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