FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
Help Close All Open All
General Information
Term primary tracheal branch ID (Ontology) FBbt:00007472 (Fly Anatomy)
Definition Tracheal branch that is two or more cells (tracheocytes) in circumference. During embryogenesis, primary trachea are formed from the tracheal primordium between stages 11 and 15.[ FlyBase:FBrf0087684 ]
Also Known As "primary branch" ; "primary trachea"
Comment
Links to External Ontologies
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       3
Insertions (FBti)  PHENOTYPE_MANIFEST_IN       2
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN       1
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
 primary tracheal branch (all annotations which use CV term, excluding "NOT" statements)       3      8      2      4
     primary tracheal branch | first instar larval stage       1       --       1       --
Spanning Tree (Parents/Children)
Only view relationship: 
  tracheal section
   |__tracheal branch
       |__primary tracheal branch  877 rec.
           |__caudal tracheal branch
           |__caudal-hindgut tracheal branch
           |__cephalic tracheal branch 2 rec.
           |   |__dorsal cephalic tracheal branch
           |   |__lateral cephalic tracheal branch
           |   |__ventral cephalic tracheal branch 2 rec.
           |__cerebral tracheal branch 9 rec.
           |__cerebropharyngeal tracheal branch 2 rec.
           |__embryonic/larval dorsal tracheal branch 264 rec.
           |   |__embryonic/larval dorsal tracheal branch 1 8 rec.
           |   |__embryonic/larval dorsal tracheal branch 2 8 rec.
           |   |__embryonic/larval dorsal tracheal branch 3 6 rec.
           |   |__embryonic/larval dorsal tracheal branch 4 6 rec.
           |   |__embryonic/larval dorsal tracheal branch 5 6 rec.
           |   |__embryonic/larval dorsal tracheal branch 6 5 rec.
           |   |__embryonic/larval dorsal tracheal branch 7 10 rec.
           |   |__embryonic/larval dorsal tracheal branch 8 5 rec.
           |   |__embryonic/larval dorsal tracheal branch 9 5 rec.
           |   |__embryonic/larval dorsal tracheal branch 10 7 rec.
           |__embryonic/larval fat body tracheal branch 1 rec.
           |   |__larval fat body tracheal branch 1
           |   |__larval fat body tracheal branch 2
           |   |__larval fat body tracheal branch 3
           |   |__larval fat body tracheal branch 4
           |   |__larval fat body tracheal branch 5
           |   |__larval fat body tracheal branch 6
           |   |__larval fat body tracheal branch 7
           |   |__larval fat body tracheal branch 8
           |   |__larval fat body tracheal branch 9
           |   |__larval fat body tracheal branch 10
           |__embryonic/larval ganglionic tracheal branch 131 rec.
           |   |__embryonic/larval ganglionic tracheal branch 0 7 rec.
           |   |__embryonic/larval ganglionic tracheal branch 1 20 rec.
           |   |__embryonic/larval ganglionic tracheal branch 2 8 rec.
           |   |__embryonic/larval ganglionic tracheal branch 3 7 rec.
           |   |__embryonic/larval ganglionic tracheal branch 4 7 rec.
           |   |__embryonic/larval ganglionic tracheal branch 5 7 rec.
           |   |__embryonic/larval ganglionic tracheal branch 6 7 rec.
           |   |__embryonic/larval ganglionic tracheal branch 7 7 rec.
           |   |__embryonic/larval ganglionic tracheal branch 8 7 rec.
           |   |__embryonic/larval ganglionic tracheal branch 9 7 rec.
           |__embryonic/larval tracheal dorsal trunk 591 rec.
           |__embryonic/larval tracheal lateral trunk 62 rec.
           |__embryonic/larval tracheal transverse connective 54 rec.
           |   |__embryonic/larval tracheal transverse connective 1
           |   |__embryonic/larval tracheal transverse connective 2
           |   |__embryonic/larval tracheal transverse connective 3
           |   |__embryonic/larval tracheal transverse connective 4 1 rec.
           |   |__embryonic/larval tracheal transverse connective 5 1 rec.
           |   |__embryonic/larval tracheal transverse connective 6
           |   |__embryonic/larval tracheal transverse connective 7
           |   |__embryonic/larval tracheal transverse connective 8
           |   |__embryonic/larval tracheal transverse connective 9
           |   |__embryonic/larval tracheal transverse connective 10
           |__embryonic/larval visceral tracheal branch 93 rec.
           |   |__visceral tracheal branch 2
           |   |__visceral tracheal branch 4
           |   |__visceral tracheal branch 5
           |   |__visceral tracheal branch 6
           |   |__visceral tracheal branch 7
           |   |__visceral tracheal branch 8
           |__hindgut tracheal branch
           |__pharyngeal tracheal branch 2 rec.
Spanning Tree View Settings
Parents/Children
View Depth
Show hierarchy levels: for parents, for children
hide Relationships
Is a tracheal branch
Part of
hide Synonyms & Secondary IDs
Synonyms
Secondary IDs
hide External Crossreferences & Linkouts