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A reagentless immunosensor for rapid determination of carbohydrate antigen 19-9 (CA19-9) in human serum was proposed. This strategy was based on the immobilization of antibody in colloidal gold nanoparticle modified carbon paste electrode and the direct electrochemistry of horseradish peroxidase (HRP) that was labeled to a CA19-9 antibody. The nanoparticles were efficient for preserving the activity...
A novel separation-free electrochemical immunosensor for carcinoma antigen-125 (CA125) was proposed based on the immobilization of CA125 antigen on colloidal gold nanoparticles that was stabilized with cellulose acetate membrane on a glassy carbon electrode. A competitive immunoassay format was employed to detect CA125 antigen with horseradish peroxidase (HRP) labeled CA125 antibody as tracer, o-phenylenediamine...
A non-toxic biomimetic interface for immobilization of living cells and electrochemical exogenous effect study of cell viability was constructed by mixing colloidal gold nanoparticles in carbon paste. A new approach to study the effects of anti-tumor drug and other exogenous factors on cell viability was proposed. The nanoparticles were efficient for preserving the activity of immobilized living cells...
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