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. 2021 Mar 31;16:2555–2568. doi: 10.2147/IJN.S307189

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© 2021 Shehata et al.

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Comet assay in testicular tissue of rats showing the effects of exposure to Ag-NPs and/or Zn-NPs on DNA damage: (A) control group; (B) Ag-NPs group; (C) Zn-NPs group; (D) Ag-NPs + Zn-NPs group. Yellow arrow indicates a nucleus without tail (intact DNA). Blue arrow indicates a nucleus with tail (DNA break).