FB2026_03 , released September 17, 2026
CV Term Report
Help Close All Open All
General Information
Term adult median bundle ID (Ontology) FBbt:00003683 (Fly Anatomy)
Definition Prominent tract located in the anterior midline of the adult brain (Ito et al., 2014). It emerges as a paired tract from a broad area around the esophagus, merging into a single tract at the tip of the flange and terminates in the superior medial protocerebrum (Ito et al., 2014). It contains fibers from neurons of the pars intercerebralis and axons projecting to the SMP and the crepine (Ito et al., 2014). It is composed of axons of the BAmas1/2 lineages (Lovick et al., 2013).[ FlyBase:FBrf0223329 FlyBase:FBrf0224194 ]
Also Known As"MBDL" ; "meB"
Comment
Links to External Ontologies
VFB:FBbt_00003683
Annotations
Records annotated with this term OR any of its CHILD TERMS

Choose a record type to view annotations for this term and its child terms. Direct annotations and full annotation statements below also provide HitList buttons.

    • Results list data from multiple species. Choose a record type above to open its HitList.
Direct annotations: records annotated with this exact term (child terms are NOT included)
Data ClassFieldDirect annotations
Alleles (FBal)PHENOTYPE_MANIFEST_IN
Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
Constructs (FBtp)PHENOTYPE_MANIFEST_IN
show Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records
 Full annotation statements 
Relevant FlyBase reports
 Alleles Genes Insertions Constructs
 adult median bundle (all annotations which use CV term, excluding "NOT" statements)
Spanning Tree (Parents/Children)
Only view relationship:
Vocabulary search 
adult head
 |__adult brain_______________
adult central nervous system  |
 |__adult brain_______________|
brain                         |
 |__adult brain_______________|
tract                         |
 |__median bundle_____________|
                              adult median bundle  42 rec.
Spanning Tree View Settings
Parents/Children
View Depth
Show hierarchy levels: for parents, for children
hide Relationships
Is a median bundle
Develops from larval median bundle
Part of adult brain
hide Synonyms & Secondary IDs
Synonyms
Secondary IDs
hide External Crossreferences & Linkouts
VFB:FBbt_00003683