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Reconstructed mass chromatograms (left pane) of (A) C[SO2PhIP] ([M+H]+ at m/z 376.1 > 225.1), (B) W[PhIP] ([M+H]+ at m/z, 421.1 > 225.1), and (C) H[PhIP] ([M+H]+ at m/z 378.1 > 225.1, 332.2) from N-sulfooxy-PhIP modified albumin following digestion with pronase E, leucine aminopeptidase, and prolidase. The product ion mass spectra and proposed diagnostic product ions are depicted (right panel).
