FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term adult subesophageal zone ID (Ontology) FBbt:00110639 (Fly Anatomy)
Definition Neuropil mass below the esophagus in the adult brain. It encompasses the gnathal ganglion, the prow and the saddle.[ FlyBase:FBrf0224194 ]
Also Known As "SEZ"
Comment This term refers to what used to be called subesophageal ganglion. The new name, together with supraesophageal zone, refer to the brain tissue below and above the esophagus and do not respect neuromere boundaries. The terms cerebral ganglia (CRG) and gnathal ganglia (GNG), denote the segmental neuromeres of the brain (the 3 rostral and 3 caudal, respectively) (Ito et al., 2014). Sterne et al. (2021) - FBrf0251280 define the SEZ as comprising GNG + TR.
Links to External Ontologies
VFB:FBbt_00110639
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)
Data Class Field Records
Alleles (FBal)  PHENOTYPE_MANIFEST_IN       1
Insertions (FBti)  EXPRESSION_STAGE_TISSUE_POSITION       9
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 subesophageal zone (all annotations which use CV term, excluding "NOT" statements)       1      5      3      9   4236
Spanning Tree (Parents/Children)
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  multicellular structure
   |__subesophageal zone
       |__adult subesophageal zone  6079 rec.
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Is a subesophageal zone
Part of adult central brain
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Synonyms
  • "adult subesophageal ganglion" NARROW
    "adult suboesophageal ganglion" NARROW
    "SEG" NARROW
    "SEZ" EXACT BRAIN_NAME_ABV[ FlyBase:FBrf0224194 ]
    "SOG" NARROW
Secondary IDs
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VFB:FBbt_00110639