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NanoLC-MS/MS spectra of the UN1 antigen. The UN1 antigen was digested with trypsin and analyzed by nanoLC-MS/MS. MS/MS spectra of doubly charged ions detected at 576.75 m/z (A) and 408.75 m/z (B) are shown. Database search of MS/MS spectra lead to a statistically significant identification of the following peptide sequences: GSGFPDGEGSSR (Mascot ion score 70) (A) and TGALVLSR (Mascot ion score 57) (B).
