Reconstructed ion mass chromatograms of the LC-ESI/MS/MS3 traces of DNA adducts of dG-C8-AαC, dG-C8-PhIP, dG-C8-MeIQx, and their internal standards in liver DNA of untreated mice and in mice exposed to the lowest dose (AαC (8 µg/day/kg), MeIQx (80 µg/day/kg), and PhIP (80 µg/day/kg)) required to induce adduct formation at or above the LOQ. The area counts (A), tR, and ion intensity of the analytes are noted.