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Cytotoxicity of C225, GNPs and C225-GNPs at various concentrations in SWCC7721 cells. A colorimetric Cell Counting Kit-8 assay was performed to measure the cytotoxicity according to the manufacturer's protocol. (A) C225; (B) GNPs; (C) C225-GNPs. GNPs, gold nanoparticles; C225, cetuximab.
