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ϕ refers to the hydrophobic dibenzocyclooctyne group for linking azido-functionalized sugar molecules to the lipid anchors using Cu-free click chemistry. The colored symbols represent sugar groups. Neu5Ac: N-acetylneuraminic acid. GlcNAc: N-acetylated glucose. Glc: glucose. Man: mannose. Fuc: fucose. Gal: galactose.
