CSDns receive homogeneous input from GABAergic and glutamatergic LNs across the antennal lobe. A, RFP (cyan) expression by the CSDns (via MB465c-spGal4) and GFP (green) expression driven by a subset of LNs (via R32F10-LexA) in the AL. Brp-ir delineates neuropil (magenta). B, All LNs in R32F10-LexA are GABAergic. Representative confocal stack of seven R32F10-LexA cell bodies (GFP; green) colocalize with GABA-ir (magenta). C, D, syb:GRASP signal between R32F10-LexA (presynaptic) and MB465c-spGal4 (postsynaptic) in many glomeruli throughout the AL. C, Posterior depth. D, Anterior depth. E, RFP (cyan) expression by the CSDns (via R60F02-Gal4) and GFP (green) expression driven by glutamatergic LNs (via VGlut-LexA) in the AL. F, syb:GRASP signal between VGlut-LexA (presynaptic) and R60F02-Gal4 (postsynaptic) in many glomeruli throughout the AL. Reconstituted GFP (green) was identified as GFP-ir only in close association with 5-HT-ir processes (magenta). N-cadherin-ir delineates neuropil (blue). Scale bars, 20 μm.