Label-free Detection of Antigen Protein Using a Metal Mesh Device Surface-modified by an Antibody

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Abstract

A biosensor for protein detection was developed using antibody-immobilized metal mesh devices. Antihemoglobin antibodies were covalently immobilized on a metal mesh device. Extraordinary transmission with a dipped structure was observed for a metal mesh device immobilized with antihemoglobin antibodies as well as for the original metal mesh device. Hemoglobin in the mixture solution containing albumin at a hundred-fold concentration was detectable using antihemoglobin-immobilized MMDs. The detectability using the antihemoglobin-immobilized metal mesh device was similar to that of a commercially-available kit for the qualitative determination of hemoglobin.

Journal

  • Analytical Sciences

    Analytical Sciences 31 (3), 173-176, 2015

    The Japan Society for Analytical Chemistry

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