preferred_name: PC is exchanged with PI by PITPNB (Drosophila melanogaster)
preferred_name_lc: pc is exchanged with pi by pitpnb (drosophila melanogaster)
label: PC is exchanged with PI by PITPNB (Drosophila melanogaster)
label_lc: pc is exchanged with pi by pitpnb (drosophila melanogaster)