ScerGAL4GSGB17-1 drives mifepristone-inducible expression primarily in glial cells and muscles. Expression is observed in PNS glia in peripheral nerves, glia cells at the CNS midline, the ring gland, the epidermis, and trachea. Strong expression is observed in all muscles. There is moderate uninduced expression in muscles, oenocytes, and salivary glans, and weak uninduced expression in glia at the CNS midline.