FB2026_03 , released September 17, 2026
CV Term Report
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Term alpha'/beta' middle Kenyon cell ID (Ontology) FBbt:00100253 (Fly Anatomy)
Definition A subtype of the mushroom body alpha'/beta' neurons that has dendrites in the main calyx and projects an axon to the middle layer of each of the alpha' and beta' lobes (Tanaka et al., 2008; Aso et al., 2014). In the beta' lobe slice 2, their axons are located in the area between the bifurcating axons of the alpha'/beta' anterior-posterior Kenyon cells (Aso et al., 2014). In the alpha' lobe, their axons are medial to those of the alpha'/beta' anterior-posterior Kenyon cells (Aso et al., 2014). There are around 120 of these neurons in each hemisphere (Li et al., 2020).[ FlyBase:FBrf0205263 FlyBase:FBrf0227179 FlyBase:FBrf0246721 ]
Also Known As"alpha'/beta' m KC" ; "alpha'/beta' m Kenyon cell" ; "alpha'/beta' middle KC" (for all, see Synonyms field below)
CommentComparison of the expression patterns of the enhancer traps NP65, NP1131, NP6522 and NP7427 prompted the classification of three subpopulations (anterior, middle and posterior) of alpha'/beta' neurons by Tanaka et al. (2008), according to their terminal positions. Aso et al. (2014) showed that there are only two subtypes, anterior-posterior and middle. Comparisons using these enhancer trap lines suggests that the neurons terminating in the middle of the alpha' lobe are the same subclass as those terminating in the middle of the beta' lobe (Tanaka et al., 2008).
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VFB:FBbt_00100253
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Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
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 alpha'/beta' middle Kenyon cell (all annotations which use CV term, excluding "NOT" statements)
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adult Kenyon cell
 |__Kenyon cell of main calyx_______
 |__adult alpha'/beta' Kenyon cell__|
alpha'/beta' Kenyon cell            |
 |__adult alpha'/beta' Kenyon cell__|
                                    alpha'/beta' middle Kenyon cell  27 rec.
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Is a Kenyon cell of main calyx
adult alpha'/beta' Kenyon cell
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FlyBrain_NDB:10476
VFB:FBbt_00100253