Figure 6.

Changes of DNA repair proteins in the lung, liver, and kidney of rats exposed to Nano-TiO₂ for 7 days. (A–D) The represented protein bands and fold changes of XRCC1, ChK2, and GADD45α in the lung. (E–H) The represented protein bands and fold changes of XRCC1, ChK2, and GADD45α in the liver. (I–L) The represented protein bands and fold changes of XRCC1, ChK2, and GADD45α in the kidney. N=5, *P<0.05, in comparison to the control group. ^#P<0.05, in comparison to the 0.2 g/kg group.

Abbreviations: XRCC1, x-ray repair cross complementing gene 1; ChK2, checkpoint kinase 2; GADD45α, growth arrest and DNA damage α.