A 2746 base pair fragment from the flanking non-coding or intronic region of mun is fused upstream of a Drosophila core synthetic promoter (DSCP) that is followed by sequence encoding a GAL4 driver.
ScerGAL4GMR93G10 drives expression in the developing esophagus and pre-migrating SGS at embryonic stage 11. Expression is also driven in the esophagus in late embryos, and in receptor cells at the anterior of the embryo.