FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term embryonic fiber tract founder cluster ID (Ontology) FBbt:00001605 (Fly Anatomy)
Definition Cluster of typically 2-6 embryonic neuronal somata prior to axon outgrowth. Neurons of the founder clusters then extend axons that grow along the surface of the founder cluster and form a simple system of pioneer tracts for each of the components of the neuropil.[ FlyBase:FBrf0105282 ]
Comment Nassif et al. (1998) use Fas2 (FBgn0000635) immunolabelling to visualize the founder clusters.
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  anatomical structure
   |__multicellular structure
       |__embryonic fiber tract founder cluster  5 rec.
           |__subesophageal embryonic fiber tract founder cluster 1 rec.
           |   |__labial/prothoracic embryonic fiber tract founder cluster
           |   |__mandibular/maxillary embryonic fiber tract founder cluster
           |   |__maxillary/labial embryonic fiber tract founder cluster
           |__supraesophageal embryonic fiber tract founder cluster 5 rec.
           |   |__deutero/tritocerebral embryonic fiber tract founder cluster 4 rec.
           |   |__protocerebral embryonic fiber tract founder cluster(+) 1 rec.
           |__thoracic-abdominal embryonic fiber tract founder cluster
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Is a multicellular structure
Part of presumptive embryonic/larval nervous system
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