ZnO Nanoparticles Treatment Induces Apoptosis by Increasing Intracellular ROS Levels in LTEP-a-2 Cells

Figure 5

ZnO nanoparticles-induced apoptosis in LTEP-a-2 cells after 4 h of exposure. (a) Morphologic examination of LTEP-a-2 cells by AO/EB fluorescence staining ((A) 0 μg/mL, control, (B) 0.05 μg/mL, (C) 0.1 μg/mL, and (D) 0.2 μg/mL) and (b) caspase-3 activity. versus control, ; versus control, by Student’s -test.

(a)

(b)