A conserved sequence cluster from the nerfin-1 upstream region is fused upstream of sequence encoding the DsRed(T4) fluorescent protein tagged with a nuclear localization signal (Tag:NLS(tra)).
DiscRFPnerfin-1.6 is expressed in a subset of early delaminating neuroblasts of the embryonic ventral nerve cord primordium as well as in ganglion mother cells and most neurons in later embryos.