FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term mushroom body calyx arborizing neuron 2 ID (Ontology) FBbt:00100228 (Fly Anatomy)
Definition A neuron whose cell body is located in a cluster of 2-3 cells in the posterior superior medial protocerebrum of the adult brain, close to the pars intercerebralis (Tanaka et al., 2014). The cell body fiber runs ventrally and bifurcates near the protocerebral bridge to form a laterodorsal and a lateroventral projection. The dorsal projection arborizes in the superior and inferior neuropils, with some branches entering the accessory calyx of the mushroom body. Some of these fibers connect the accessory calyx and the ventral peripheral zone of the main calyx. The ventral projection forms extensive arborization in the superior and inferior neuropils, and further projects to the posteriorlateral protocerebrum.[ FlyBase:FBrf0205263 ]
Also Known As "MB-C2"
Comment Names are assigned according to the area of the mushroom body they arborize, as detailed in Tanaka et al. (2008). Not entirely clear that all 2-3 have the same innervation patterns. Based on descriptions in Tanaka et al. (2008), all assumed here to innervate mushroom body calyx and accessory calyx.
Links to External Ontologies
VFB:FBbt_00100228
Annotations
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Data Class Field Records
Insertions (FBti)  EXPRESSION_STAGE_TISSUE_POSITION       2
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 mushroom body calyx arborizing neuron 2 (all annotations which use CV term, excluding "NOT" statements)       1      1      2      2
Spanning Tree (Parents/Children)
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interneuron
 |__adult interneuron________________
input/output neuron                  |
 |__mushroom body extrinsic neuron___|
CNS neuron                           |
 |__supraesophageal ganglion neuron__|
adult CNS neuron                     |
 |__adult interneuron________________|
                                     mushroom body calyx arborizing neuron 2  6 rec.
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Is a supraesophageal ganglion neuron
adult interneuron
mushroom body extrinsic neuron
Part of adult brain
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Synonyms
Secondary IDs
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FlyBrain_NDB:10452
VFB:FBbt_00100228