| DNA | Deoxyribonucleic acid |
| RAD51 | DNA repair protein RAD51 homolog 1 |
| Cr(VI) | Hexavalent chromium |
| Cr(III) | Trivalent chromium |
| γH2AX | Gamma-H2A.X variant histone |
| DAPI | 4′,6-diamidino-2-phenylindole |
| EDTA | Ethylenediaminetetraacetic acid |
| TBS | Tris buffered saline |