Genotoxicity Studies of Titanium Dioxide Nanoparticles (TiO₂NPs) in the Brain of Mice

Figure 2

A 1.5% agarose gel separating PCR product for PSEN1 exon 5 (231 bp). Each lane represents an individual animal, in which lane M is low molecular weight DNA marker (100–1500 bp); lanes 1–3, PCR product for negative control group; lanes 4–6; lanes 7–9 and lanes 10–12, PCR products for 24 h; 7-day and 14-day groups, respectively.