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. 2011 May 23;5:72. doi: 10.3389/fnins.2011.00072

Figure 1.

Figure 1

Simplified wiring diagrams of the larval olfactory system. (A) Twenty-one ORNs are connected with 21 glomeruli in the LAL, and 21 PNs target ~30 glomeruli in the mushroom body calyx and synapse onto ~600 γ-lobe MB neurons. (B) Schematic illustration of the anatomical situation with individual ORNs (green or red) forming synapses with one PN each (dark green or dark red). PNs project to the calyx of the MB. LNs interconnect glomeruli in the LAL. The MB is shown in gray. DO, dorsal organ; LN, local interneurons; MB, mushroom bodies; PN, projection neurons.