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Representative Q-TOF tandem mass spectra of glycopeptides and peptides: (a) MS/MS spectrum of glycopeptide Hex3HexNAc4Fuc1_EEQYNSTYR from IgG1, (b) MS/MS spectrum of glycopeptide Hex3HexNAc4Fuc1_EEQFNSTFR from IgG2, and (c) MS/MS spectrum of peptide EEQYNSTYR from IgG1. A blue diamond is drawn above the selected precursor ion.
