The dendritic arborizations of the dorsal bipolar dendrite neuron (dbd) in larval and pharate adult Drosophila. (A) Cartoon of the segmental position of dbd before and after metamorphosis. (B, C) Dorsal views of a dorsal abdominal segment from a larva and a pharate adult, respectively, showing the position of dbd relative to the md sensory neuron, ddaE. (B'-C") Confocal stacks from a larva and a pharate adult projected along the Z- axis (B', C') and the Y-axis (B", C") showing the relationship of the stretch receptor to the surrounding muscles; green, anti-CD8; magenta, phalloidin F-actin. (B', B'') Larval version of dbd; brackets show clearest region of larval dbd arbor unassociated with muscles. (C', C'') In the adult version of dbd, the dendrites remained within the dorsal abdominal muscle layer. Scale bar = 50 μm. In all figures, dorsal is up and anterior is left. Genotype is C161-GAL4, UAS mCD8::GFP.