Figure 6: Glycan structures representing 52 neutral glycan cores, as well as 12 monosialylated glycans. The composition (H = hexose, N = amino sugar, S =sialic acid, F = fucose) and calculated mass of the neutral core glycan are given. The letters P and U correspond pituitary and urinary hFSH, respectively. Those in parentheses were not found in the original data tables. The structures follow the system proposed by the Oxford Glycobiology Institute [61]. Monosaccharide symbols are: closed square, GlcNAc; open circle, Mannose; open diamond, Galactose; closed diamond, GalNAc; dotted diamond, fucose; closed star, sialic acid. Linkages are indicated by solid lines for β and dashed lines for α.