Ultrasensitive detection of alpha-fetoprotein via ZnO-mediated photo-ATRP signal amplification on chitosan-functionalized magnetic beads
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Alpha-fetoprotein (AFP) is a key serum biomarker for the early detection and monitoring of hepatocellular carcinoma (HCC). However, conventional methods such as enzyme-linked immunosorbent assay (ELISA) and chemiluminescence immunoassay often lack the sensitiv... ...