Journal
CURRENT BIOLOGY
Volume 23, Issue 8, Pages 633-643Publisher
CELL PRESS
DOI: 10.1016/j.cub.2013.02.057
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Funding
- Howard Hughes Medical Institute
- National Institutes of Health
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Background: The insect brain can be divided into neuropils that are formed by neurites of both local and remote origin. The complexity of the interconnections obscures how these neuropils are established and interconnected through development. The Drosophila central brain develops from a fixed number of neuroblasts (NBs) that deposit neurons in regional clusters. Results: By determining individual NB clones and pursuing their projections into specific neuropils, we unravel the regional development of the brain neural network. Exhaustive clonal analysis revealed 95 stereotyped neuronal lineages with characteristic cell-body locations and neurite trajectories. Most clones show complex projection patterns, but despite the complexity, neighboring clones often coinnervate the same local neuropil or neuropils and further target a restricted set of distant neuropils. Conclusions: These observations argue for regional clonal development of both neuropils and neuropil connectivity throughout the Drosophila central brain.
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