preferred_name: Two NPFF receptors can bind neuropeptide FF (Rattus norvegicus)
preferred_name_lc: two npff receptors can bind neuropeptide ff (rattus norvegicus)
label: Two NPFF receptors can bind neuropeptide FF (Rattus norvegicus)
label_lc: two npff receptors can bind neuropeptide ff (rattus norvegicus)