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

Figure 3

A 9% polyacrylamide gel showing PCR-SSCP for PSEN1 exon 5. Each lane represents an individual animal, in which lane C represents negative control group; lanes 1–3; lanes 4–6 and lanes 7–9 represent PCR-SSCP pattern for 24 h; 7-day and 14-day groups, respectively. () symbol referred to mutated samples that are found at lanes 6 and 7 in comparison with the negative control group.