preferred_name: Duplex siRNA is loaded into Argonaute (Caenorhabditis elegans)
preferred_name_lc: duplex sirna is loaded into argonaute (caenorhabditis elegans)
label: Duplex siRNA is loaded into Argonaute (Caenorhabditis elegans)
label_lc: duplex sirna is loaded into argonaute (caenorhabditis elegans)