FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term mushroom body vertical lobe arborizing neuron 2 ID (Ontology) FBbt:00100237 (Fly Anatomy)
Definition A neuron, whose cell body is located in the posterior dorsal superior lateral protocerebrum, lateral to the calyx of the adult brain. The cell body fiber runs near the calyx and forms arborizations in the superior neuropils posterior to the tip of the alpha lobe, before entering and arborizing in the tip of the vertical lobe. The fibers further turn ventrally and terminate on the alpha (MB-V2 alpha) or alpha' lobes (MB-V2 alpha'). Near the tip of these lobes, two fibers emerge: one of which projects posteriolaterally to the lateral horn, whereas the other projects medially to the contralateral middle superior lateral protocerebrum just posterior to the vertical lobes, the lateral horn and the superior intermediate protocerebrum (Tanaka et al., 2008, Sejourne et al., 2011, Aso et al., 2014). Contacts with Kenyon cells are visible in the apex of the alpha' lobe, the upper shaft of the alpha' and alpha lobes and a very fine region at the tip of the alpha-posterior lobes (Pech et al., 2013).[ FlyBase:FBrf0205263 FlyBase:FBrf0214029 FlyBase:FBrf0222995 FlyBase:FBrf0227179 ]
Also Known As "MB-V2" ; "MB-V2 neuron"
Comment Names are assigned according to the area of the mushroom body they arborize, as detailed in Tanaka et al. (2008). Pre-synaptic terminals were assessed using the pre-synaptic marker synaptotagmin (Sejourne et al., 2011). Localization of choline acetyltransferase to a subset of MB-V2 terminals suggests some or all of these neurons are cholinergic (Sejourne et al., 2011).
Links to External Ontologies
VFB:FBbt_00100237
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Data Class Field Records
Insertions (FBti)  EXPRESSION_STAGE_TISSUE_POSITION       2
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 mushroom body vertical lobe arborizing neuron 2 (all annotations which use CV term, excluding "NOT" statements)       2      2      1
Spanning Tree (Parents/Children)
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cholinergic neuron
 |__adult cholinergic neuron_________
adult neuron                         |
 |__adult cholinergic neuron_________|
adult interneuron                    |
 |__adult lateral horn input neuron__|
input/output neuron                  |
 |__adult lateral horn input neuron__|
 |__mushroom body extrinsic neuron___|
CNS neuron                           |
 |__supraesophageal ganglion neuron__|
                                     mushroom body vertical lobe arborizing neuron 2  37 rec.
                                      |__mushroom body output neuron 18 19 rec.
                                      |__mushroom body vertical lobe arborizing neuron 2 alpha' 22 rec.
                                          |__mushroom body output neuron 16 17 rec.
                                          |__mushroom body output neuron 17 14 rec.
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Is a supraesophageal ganglion neuron
adult lateral horn input neuron
adult cholinergic neuron
mushroom body extrinsic neuron
Part of adult brain
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FlyBrain_NDB:10462
VFB:FBbt_00100237