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Cytotoxicity of the liposomal formulations and free TPT on HeLa cells. Cells were incubated with, L–QD, L–TPT, L–QD–TPT and free TPT (equivalent concentration of loaded TPT, 2.0 µg/mL) for 24 h. 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay was applied. Error bars represent the standard deviation from the mean (n = 3). Data were analyzed using t-test, and * p < 0.05 was considered significant. ns: not significant.
