UAS regulatory sequences and the intronic Sox21a enhancer sequences drive expression of the 2.8kb Sox21a coding region, which is tagged with mRFP1.
Sox21aUAS.Enh.mRFP1 rescues Sox21a6
Expression of Sox21aScer\UAS.Enh.T:Disc\RFP reduces tumor formation in the anterior midgut of Sox21a6 mutant flies.