A 4kb fragment from upstream of the mir-124 hairpin regulates expression of DsRed(T4) tagged with a nuclear localization signal (Tag:NLS(tra)).
In the embryonic CNS DiscRFPDsRedT4.mir-124.T:nls-tra is expressed in glioblasts, neuroblasts, ganglion mother cells and neurons. In larvae expression is detected in neuroblasts and neurons of the ventral nerve cord and larval central complex.