FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term adult lateral fan-shaped body tangential-protocerebrum neuron ExFl1 ID (Ontology) FBbt:00007534 (Fly Anatomy)
Definition Lateral fan-shaped body tangential neuron that projects posteriorly, arborizing in the middle inferior medial protocerebrum and lateral accessory lobe (ventral body), before projecting across the midline to circle around the contralateral side of the ellipsoid body, and innervating the fan-shaped body (Young and Armstrong, 2010). Innervation of the lateral accessory lobes is postsynaptic, whilst that of the fan-shaped body, in layer 2, is presynaptic (Young and Armstrong, 2010; Hulse et al., 2021). The cell bodies of neurons in this class are found in the anterior brain, dorsal to the antennal lobes (Young and Armstrong, 2010).[ FlyBase:FBrf0210154 FlyBase:FBrf0254510 ]
Also Known As "ExFl1" ; "F1 neuron" ; "FB2B" (for all, see Synonyms field below)
Comment Hulse et al. (2021) - FBrf0254510 say this likely corresponds to what they call FB2B_a and/or FB2B_b. Different FB2B cells may originate from different lineages (Kandimalla et al., 2023 - FBrf0257023).
Links to External Ontologies
VFB:FBbt_00007534
Annotations
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Data Class Field Records
Insertions (FBti)  EXPRESSION_STAGE_TISSUE_POSITION       3
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 Insertions
 adult lateral fan-shaped body tangential-protocerebrum neuron ExFl1 (all annotations which use CV term, excluding "NOT" statements)       3
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fan-shaped body tangential neuron
 |__adult lateral fan-shaped body tangential neuron__
adult ventral fan-shaped body tangential neuron      |
 |__adult fan-shaped body layer 2 tangential neuron__|
                                                     adult lateral fan-shaped body tangential-protocerebrum neuron ExFl1  3 rec.
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Is a adult lateral fan-shaped body tangential neuron
adult fan-shaped body layer 2 tangential neuron
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Synonyms
Secondary IDs
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FlyBrain_NDB:10519
VFB:FBbt_00007534