preferred_name: Pol II elongation complex moves on the template as transcript elongates (Xenopus tropicalis)
preferred_name_lc: pol ii elongation complex moves on the template as transcript elongates (xenopus tropicalis)
label: Pol II elongation complex moves on the template as transcript elongates (Xenopus tropicalis)
label_lc: pol ii elongation complex moves on the template as transcript elongates (xenopus tropicalis)