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Representation of released undigested human IgG N-glycosylation profile and glycan structures. The linkages and abbreviations used are seen in the boxed inset, and the major structures assigned are based on the structural annotations for IgG described in Stöckmann et al. (2013). GP glycan peak number, GU glucose units. Reprinted with permission from Stöckmann et al. (2013). Copyright 2013 American Chemical Society
