Modified from (Ndeh et al., 2017). Sugars are represented using the Symbol Nomenclature for Glycans (SNFG (Varki et al., 2015)), with minor modifications to enable color-blind readers to distinguish l-fucose and l-rhamnose, and with a white hexagon to represent aceric acid since it does not currently have an SNFG designation. d-KDO, 3-deoxy-d-manno-octulosonic acid; d-DHA, 2-keto-3-deoxy-d-lyxo-heptulosaric acid. The l-galactose residue, which is reduced in the hpGGLT1 lines described in this publication, is marked with an arrow.