Fig. 6
MTT assay was used to qualitatively display in vitro anti-tumor activity of DOX and DRN-GNPs on Hela (a) and MCF-7 cells (b) for 24 h (100%). The concentrations of C0-C5 are 0, 20, 40, 60, 80, 100 μg/mL for DRN-GNPs; the corresponding DOX’s concentrations are 0, 7.8, 15.6, 23.4, 31.2, 39.0 μg/mL. Data are represented as means ± standard deviations of triplicate samples (n = 3). Images of Hela cells incubated with different concentration of DRN-GNPs (c)