ScerGAL4^GSGB66b1-1 drives mifepristone-inducible expression primarily in neurons and glia. Strong expression is observed along the dorsal midline and ventral midlines of the ventral nerve cord, and in scattered ventral cells. Strong expression is also observed in scattered cells throughout the brain hemispheres, including in glial cells. Moderate variable expression is observed in chordotonal organs and in the abdominal intersegmental bidendritic neuron isbp (lbd). Weak expression is observed at the neuromuscular junctions of muscles 4, 6, and 7. Expression is observed in CNS glia and in PNS glia in peripheral nerves. Expression is observed in tracheal-associated cells. There is faint uninduced expression in CNS glial cells.