FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term secondary tracheal branch ID (Ontology) FBbt:00007471 (Fly Anatomy)
Definition Trachea formed by a single tracheolar cell folded back on itself and making an auto-cellular junction to form a tube. Secondary trachea first begin to form in the embryo during stage 13.[ FlyBase:FBrf0087684 ]
Also Known As "secondary branch" ; "secondary trachea"
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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       4
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN       3
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 Constructs
 secondary tracheal branch (all annotations which use CV term, excluding "NOT" statements)       4      3      6
     secondary tracheal branch | somatic clone       1       --       --
Spanning Tree (Parents/Children)
Only view relationship: 
tracheal section
 |__pupal tracheal section__
 |__tracheal branch_________|
                            secondary tracheal branch  43 rec.
                             |__embryonic/larval dorsal group tracheal branch
                             |   |__larval dorsal group tracheal branch 1
                             |   |__larval dorsal group tracheal branch 2
                             |   |__larval dorsal group tracheal branch 3
                             |   |__larval dorsal group tracheal branch 4
                             |   |__larval dorsal group tracheal branch 5
                             |   |__larval dorsal group tracheal branch 6
                             |   |__larval dorsal group tracheal branch 7
                             |   |__larval dorsal group tracheal branch 8
                             |   |__larval dorsal group tracheal branch 9
                             |   |__larval dorsal group tracheal branch 10
                             |__embryonic/larval lateral group tracheal branch 30 rec.
                                 |__larval lateral E tracheal branch(+)
                                 |__larval lateral F tracheal branch(+) 3 rec.
                                 |__larval lateral G tracheal branch(+) 25 rec.
                                 |__larval lateral H tracheal branch(+) 8 rec.
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Is a pupal tracheal section
tracheal branch
Part of tracheolar cell
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