Fig 3.

(A) The Venn diagram showing the significant N-glycopeptides identified in each comparison in relation to each other. (B) The three glycan compositions with significantly different abundances in all three comparisons in this study. Monosaccharide symbols follow the SNFG (Symbol Nomenclature for Glycans) system [18]. For the glycan structures, the following abbreviations were used: H = hexose, N = N-acetylhexosamine, F = fucose, S = sialic acid. The m/z value and charge are given to the left of the glycan structures. OOM = Old Order Mennonites. IgA1 = immunoglobulin A1. pIgR = polymeric immunoglobulin receptor.