Activity of the slob57 and slob71 promoters in the adult CNS. A, Representative confocal z-stack of CD8::GFP driven by slob57–Gal4 in the adult Drosophila brain. Synaptic neuropil regions are labeled with the presynaptic marker nc82 (anti-Bruchpilot). B, Representative confocal z-stack of CD8::GFP driven by slob71–Gal4. SAR, Superior arch; AL, antennal lobe; SOG, suboesophageal ganglion; MB, mushroom body α, β, and γ lobes. Scale bars, 100 μm.