preferred_name: FUT2 transfers Fuc to LeX to form LeY (Xenopus tropicalis)
preferred_name_lc: fut2 transfers fuc to lex to form ley (xenopus tropicalis)
label: FUT2 transfers Fuc to LeX to form LeY (Xenopus tropicalis)
label_lc: fut2 transfers fuc to lex to form ley (xenopus tropicalis)