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The SRM traces of PhIP and [2H3C]-PhIP isolated from hair of a vegetarian (left panel) and meat-eater (middle panel) with the associated area counts (A) and tR of the analytes. The relative abundances on the respective Y-axes of these plots are normalized to 100%. The product ion spectra of PhIP and the analyte isolated from hair of the meat-eater are presented in the right panel.
