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Fig. 1. Metamorphosis of the thoracic ventral (Tv) neurosecretory cells.
(A) Schematic transverse section of the ventral nervous system, showing
the axons, dendrites and cell bodies of a pair of Tv cells, before
metamorphosis. The axons are wrapped around a pair of support cells (dorsal
neurohemal organ), situated outside the neural sheath. (B) Projected
confocal Z-stack of CD8::GFP expression in the thoracic neuromeres of
an early metamorphic individual (18 hours apf) of the genotype
UAS-CD8::GFP;FG10-GAL4. Expression in the thorax is limited to the three pairs
of Tv neurons (arrows point to somata). (C) Dorsal view of the Tv cell
axons, immunostained with
-SCP, at various time points during
metamorphosis.