ScerGAL4GSG3621-2 drives mifepristone-inducible expression primarily in neurons and muscles. Weak expression is observed in a single cell per hemisegment at the dorsal and ventral midline of the ventral nerve cord; expression is not oberved in every segment. Expression is also observed in the lateral and ventral glial cells throughout the cortex. Weak expression is observed in the mushroom body. Weak expression is oberved in chordontal organs and abdominal dorsal bipolar neuron dbps in several anterior segments. Weak expression with variable penetrance is observed at neuromuscular junctions on several dorsal longitudinal muscles and possibly ventral longitudinal muscles. Weak variable expression is observed in muscles. Expression is observed in the ring gland. Littled detectable uninduced expression is observed in the salivary glands and in the occasional weak midline CNS cell.