A 3755 base pair fragment from the flanking non-coding or intronic region of ds is fused upstream of a Drosophila core synthetic promoter (DSCP) that is followed by sequence encoding a GAL4 driver.
ScerGAL4GMR19C02 drives expression in neuropile-ensheathing glia in the lamina.
ScerGAL4GMR19C02 drives expression in marginal glial cells that are positioned above outer chiasm giant glia in the adult.