| CuNP | copper nanoparticle |
| DCFDA | 2′,7′-dichlorofluorescin diacetate |
| MTT | (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide |
| WST | Water-Soluble Tetrazolium |
| IC50 | the half maximal inhibitory concentration |
| ROS | reactive oxygen species |
| FBS | fetal bovine serum |
| TEM | transmission electron microscopy |