A 3048 base pair fragment from the flanking non-coding or intronic region of AP-2 is fused upstream of a Drosophila core synthetic promoter (DSCP) that is followed by sequence encoding a GAL4 driver.
All olfactory sensory neuron classes within ab1, ab9, and at4 sensilla are labeled at high frequency with the immortalized ScerGAL4GMR24C12.