preferred_name: Duplex miRNA is loaded into Argonaute (Xenopus tropicalis)
preferred_name_lc: duplex mirna is loaded into argonaute (xenopus tropicalis)
label: Duplex miRNA is loaded into Argonaute (Xenopus tropicalis)
label_lc: duplex mirna is loaded into argonaute (xenopus tropicalis)