2'-Fucosyllactose

2-Acetamido-2-deoxy-3-O-(β-D-galactopyranosyl)-D-galactopyranose

a2,8-sialyltransferase(Cstll)

a1,2-fucosyltransferase(α1,2FucT)

α1,3-galactosyltransferase(α1,3GalT)

L-fucokinase/GDP-fucosepyrophosphorylase(FKP)