Figure 7

Heterogeneity of local interneurons (LNs). Single cell clones are heterogeneous in their patterns of arborization. (A, B) Multiglomerular neurons innervate several glomeruli. Type a (A1, A2) innervates a large fraction while type b (B1, B2) cells have somewhat more restricted innervation. Pink asterisks highlight glomeruli that are excluded from the field of this LN. (C) Oligoglomerular LNs innervate a smaller subset of glomeruli. (D) Contralaterally projecting LNs send at least one branch to the other antennal lobe through commissure (yellow arrow), which branches and innervates some glomeruli (white arrowheads). Cell bodies in each case are indicated by blue arrowheads. (E) A representative GAL4-LN2 MARCM single cell clone generated at 0–4 h after larval hatching (ALH). (F) Three-dimensional reconstructions of 10 single cell LN clones born 0–4 h ALH and focusing on their innervations in the V glomerulus.