FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term adult protocerebral bridge 1-9 neuron ID (Ontology) FBbt:00051233 (Fly Anatomy)
Definition Neuron with extensive innervation of the brain that has a sinuous arbor of variable density that courses through all glomeruli of the protocerebral bridge (PB) (Wolff and Rubin, 2018). It has its cell body in the subesophageal zone (Kandimalla et al., 2023). There is heterogeneity in the brain regions innervated and whether PB innervation is unilateral or bilateral (Wolff and Rubin, 2018). At least one subtype is octopaminergic (Busch et al., 2009; Wolff and Rubin, 2018).[ FlyBase:FBrf0207458 FlyBase:FBrf0240744 FlyBase:FBrf0257023 ]
Also Known As "P1-9"
Comment Name does not reflect full extent of neuron, but most of this neuron is not present in the hemibrain volume and it is not clear from Wolff and Rubin (2018) which regions are conserved between subtypes. May be renamed when better described in future. May only be one of these per hemisphere and may be identical to OA-AL2i1 (Kandimalla et al., 2023 - FBrf0257023).
Links to External Ontologies
VFB:FBbt_00051233
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interneuron
 |__adult interneuron_____________
adult neuron                      |
 |__adult central complex neuron__|
CNS neuron                        |
 |__subesophageal zone neuron_____|
adult CNS neuron                  |
 |__adult interneuron_____________|
                                  adult protocerebral bridge 1-9 neuron
                                   |__octopaminergic AL2i1 neuron
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Is a subesophageal zone neuron
adult central complex neuron
adult interneuron
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VFB:FBbt_00051233