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. 2021 Dec 6;11:23479. doi: 10.1038/s41598-021-02937-1

Figure 4.

Figure 4

The cell viability (in %) of (a) A549 cell line (Human lung cancer cells) and (b) A375 cell line (human melanoma cancer cells) in the presence of various concentrations of ZnO/CuO NPs, doxorubicin (positive control) and untreated cells (negative control). *P < 0.01.