Concentration of ATR and its metabolites in mouse plasma determined by
LC/MS at the indicated time points after single ATR treatments at four
different dose levels. A, concentration of ATR. B, concentration of DACT. C,
concentration of DE. D, concentration of DIP. Each time point represents the
mean ± S.E.M.; n = 5, 8, 8, 8, 6, 6, and 8 mice/dose for
plasma samples collected at 0.5, 1, 2, 4, 6, 12, and 24 h, respectively.