720579.fig.007a
(a)
720579.fig.007b
(b)
720579.fig.007c
(c)
Figure 7: Cell viability (%) of PS1 (0–25 μg/mL) and the PS-GNPs conjugates 2a2e against A549 cells without photo irradiation (dark cytotoxicity) after 3 h, 24 h, and 48 h incubation times.