FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
Help Close All Open All
General Information
Term mushroom body output neuron 15 ID (Ontology) FBbt:00111010 (Fly Anatomy)
Definition A cholinergic mushroom body output neuron whose dendrites arborize unilaterally in alpha' lobe slice 1 (Aso et al., 2014), with thin dendritic branches projecting through the edge of the alpha' lobe slices 2 and 3 (Aso et al., 2014). Its axon projects to the contralateral hemisphere, sharing a tract with MBONs 16 and 17, terminating in the superior intermediate and lateral protocerebrum, and lateral horn (Aso et al., 2014). There are 4 neurons of this type in each hemisphere, forming two different connectivity patterns (Li et al., 2020). At least one of these subtypes comprises two DL1 (CP2) secondary neurons (Truman et al., 2023).[ FlyBase:FBrf0227179 FlyBase:FBrf0248215 FlyBase:FBrf0255928 ]
Also Known As "MBON-15" ; "MBON-alpha'1" ; "MBON15"
Comment Two of these cells were identified by Aso et al. (2014), a further two were added by Li et al. (2020) due to similar morphology. The additional neurons are referred to as "MBON15-like", but still classed as MBON15 neurons (Li et al., 2020). Truman et al. (2023) say two per hemisphere - probably original two.
Links to External Ontologies
VFB:FBbt_00111010
Annotations
Records annotated with this term OR any of its CHILD TERMS
Records annotated with this exact term (annotations to child terms are NOT included)
No relevant records available
show Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records
 Full annotation statements 
Relevant FlyBase reports
  Constructs
 mushroom body output neuron 15 (all annotations which use CV term, excluding "NOT" statements)       5     12
Spanning Tree (Parents/Children)
Only view relationship:
cholinergic neuron
 |__adult cholinergic neuron___________________
adult neuron                                   |
 |__adult cholinergic neuron___________________|
adult mushroom body output neuron              |
 |__adult typical mushroom body output neuron__|
adult interneuron                              |
 |__adult lateral horn input neuron____________|
input/output neuron                            |
 |__adult lateral horn input neuron____________|
CNS neuron                                     |
 |__supraesophageal ganglion neuron____________|
                                               mushroom body output neuron 15  17 rec.
Spanning Tree View Settings
Parents/Children
View Depth
Show hierarchy levels: for parents, for children
hide Relationships
Is a supraesophageal ganglion neuron
adult lateral horn input neuron
adult typical mushroom body output neuron
adult cholinergic neuron
Part of
hide Synonyms & Secondary IDs
Synonyms
Secondary IDs
hide External Crossreferences & Linkouts
VFB:FBbt_00111010