A 491 base pair fragment from the flanking non-coding or intronic region of Sema-1a is fused upstream of a Drosophila core synthetic promoter (DSCP) that is followed by sequence encoding a GAL4 driver.
ScerGAL4GMR32G08 drives expression in mushroom body extrinsic neurons that innervate mushroom body beta lobe slices 1 and 2, and mushroom body beta' lobe slice 2.