Fig. 2.
LC-MS/MS chromatograms obtained in SRM mode. Representative chromatograms are shown for, (a) 1 µmol/L aqueous standards and, (b) endogenous SAM and SAH in an E10.5 mouse embryo, containing measured concentrations of 0.766 µmol/L SAM and 0.121 µmol/L SAH. Retention times are indicated above peaks.