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Cytotoxicity assay of UA and NPs in cancerous cells and noncancerous cells. Inhibitory effects on (A) HEK293T, L02 cells and (B) HepG2, HeLa cells after incubated with different concentrations of UA, UA NPs, UE NPs, and UEA NPs for 24 h. Data are presented as mean ± SD (n = 6); ∗P < 0.05; ∗∗P < 0.01; ∗∗∗P < 0.001.
