Fig. 1.
Chromatograms of SAM and SAH in mouse liver. The panels show selected reaction monitoring of the transitions m/z 399.3 → 250.3 for SAM (a); 402.3 → 250.3 for [2H3]-SAM (b); 385.3 → 136.3 for SAH (c) and 390.3 → 136.3 for [13C5]-SAH (d).
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