ScerGAL4GSG3644 drives mifepristone-inducible expression primarily neuronally, with some muscle expression. Widespread intense expression is observed at the dorsal midline and in lateral cells clusters in the ventral nerve cord. Little to no expression is observed in the brain Strong expression is observed in chordotonal organs, and weak expression in multidendritic neurons. Strong expression is observed at neuromuscular junctions of most muscle fibers, though expression in the muscles themselves is weak.