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(a) Cytotoxicity results of pure GO nanosheets, pure protocatechuic acid and protocatechuic acid loaded on GO/Gd nanocarrier after surface coating with gold nanoparticles (GAGPAu) dosed in normal fibroblast cell lines (3T3); (b) cytotoxicity results of pure GO nanosheets, pure protocatechuic acid and protocatechuic acid loaded on GO/Gd nanocarrier after surface coating with gold nanoparticles (GAGPAu) dosed in cancer cell lines (HepG2).
