preferred_name: Addition of nucleotides leads to transcript elongation (Caenorhabditis elegans)
preferred_name_lc: addition of nucleotides leads to transcript elongation (caenorhabditis elegans)
label: Addition of nucleotides leads to transcript elongation (Caenorhabditis elegans)
label_lc: addition of nucleotides leads to transcript elongation (caenorhabditis elegans)