Fig. 4. Cell viability of different cells treated with various NB complexes at different concentrations and conditions (*p < 0.05, **p < 0.01): panels (a) and (b) were the cell viability of HepG2 cells co-cultured with the prepared NBs at 24 h and 48 h, respectively. Panels (c) and (d) were the cell viability of Huh7 cells cocultured with the prepared NBs at 24 h and 48 h, respectively. Panels (e) and (f) were the cell viability of 3T3 cells co-cultured with the prepared NBs at 24 h and 48 h, respectively.
