Fig. 3
From: The Role of Apoptosis Pathway in the Cytotoxicity Induced by Fresh and Aged Zinc Oxide Nanoparticles
Cell viability induced by fresh and aged ZnO NPs in AL cells. AL cells were incubated with various concentrations of fresh and aged ZnO NPs (20 and 90–200 nm) for 24 h (A), 48 h (B) and 72 h (C). D AL cells were exposed to various concentrations of ZnCl2 for different times. Data were based on ≥ 3 independent experiments and expressed as mean ± SD, *p < 0.05