preferred_name: DHFR dimer binds DHFR inhibitors (Rattus norvegicus)
preferred_name_lc: dhfr dimer binds dhfr inhibitors (rattus norvegicus)
label: DHFR dimer binds DHFR inhibitors (Rattus norvegicus)
label_lc: dhfr dimer binds dhfr inhibitors (rattus norvegicus)