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In vitro cytotoxicity of HepG2 cells with the treatments of free SF, PEG-CD/AD, and SF physical mixture, PEG-CD/AD/SF nanoparticles for 48 h (A), 72 h (B), and 96 h (C). Data are means ± standard deviation for three separate experiments. *p < 0.05, **p < 0.01.
