Lewis x (Lex) hexaose / Lacto-N-neodifucohexaose (LNnDFH) linked to biotin and fluorescein (Linker-BT-FLUO A)
Lewis a (Lea) hexaose / Lacto-N-difucohexaose II (LNDFH II) linked to biotin and fluorescein (Linker-BT-FLUO A)