FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term t-bar ID (Ontology) FBbt:00005117 (Fly Anatomy)
Definition T-shaped density that is found in the presynaptic region of a neuron.[ FlyBase:FBrf0232028 ]
Also Known As "T bar" ; "T-bar"
Comment
Links to External Ontologies
VFB:FBbt_00005117
Annotations
Records annotated with this term OR any of its CHILD TERMS
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Records annotated with this exact term (annotations to child terms are NOT included)
Data Class Field Records
Alleles (FBal)  PHENOTYPE_MANIFEST_IN      40
Insertions (FBti)  PHENOTYPE_MANIFEST_IN       6
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN      13
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 Insertions Constructs
 t-bar (all annotations which use CV term, excluding "NOT" statements)      40      6     13
     t-bar | absent | larval stage       1       --       --
     t-bar | larval stage       1       --       --
     t-bar | somatic clone       2       --       --
     t-bar | third instar larval stage       5      2       --
Spanning Tree (Parents/Children)
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  anatomical structure
   |__cell component
       |__t-bar  59 rec.
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Is a cell component
Part of bouton
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Synonyms
  • "T bar" EXACT
    "T-bar" EXACT
Secondary IDs
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GO:0098986
VFB:FBbt_00005117