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Cytotoxicity of NPs. HeLa, Hep G2, and HEK-293T cells were treated with blank FPNPs (A). HeLa cells (B), Hep G2 cells (C), and HEK-293T cells (D) were treated with free drugs, PNPS-480, and FPNPs-480 with different exposure times. Data represent the mean ± standard deviation (n = 3).
