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. 2012 Aug 20;7(8):e43442. doi: 10.1371/journal.pone.0043442

Figure 1. Copper oxide nanoparticles cause cell death in respiratory cell lines.

Figure 1

(A) MTS assay results for A549 cells treated with CuO, SiO2, TiO2 (10 nm, 32 nm), Fe2O3 or Fe3O4 NPs (30 µg/ml) for 24 h (B) MTS assay results for A549 cells treated with CuO NPs (0.1, 0.3, 1, 3, 10 and 30 µg/ml) for 24 h (C) MTS assay results for H1650 cells treated with NPs (30 µg/ml) for 24 h (D) MTS assay results for CNE-2Z cells treated with NPs (30 µg/ml) for 24 h. ***p<0.001 versus control and **p<0.01 versus control.