After the blocking procedure, sections were incubated with the primary antibody (mouse monoclonal antibody mAb483.15 directed against 8-oxoG[16], 1:1000 dilution in 2% BSA-PBS) for 1 h at 37 °C. The sections were then washed three times for 10 min in PBS, and incubated for 30 min at 37 °C with fluorescein isothiocyanate (FITC)-conjugated affinity purified rabbit anti-mouse IgG secondary antibodi