Supplementary Figures S1-S3 from Measurement of Endogenous versus Exogenous Formaldehyde–Induced DNA–Protein Crosslinks in Animal Tissues by Stable Isotope Labeling and Ultrasensitive Mass Spectrometry

Typical calibration curve used for the quantification of dG-Me-Cys with the linearity from 0.15 to 6.0 fmol (S1); Schematic of rat nose only inhalation chamber (S2); Schematic of primate whole-body inhalation chamber (S3).