As in wild type, stage 13 embryos expressing mamScer\UAS.cGa under the control of Scer\GAL4sim.P3.7 contain approximately six anterior midline glia (AMG), and this correctly reduces to around three by stage 16.
Embryos expressing mamScer\UAS.cGa under the control of Scer\GAL4arm.PS show loss of peripheral nervous system neurons and have gaps in the central nervous system.