FB2026_03 , released September 17, 2026
CV Term Report
Help Close All Open All
General Information
Term oogenesis stage S12 ID (Ontology) FBdv:00005274 (Fly Development)
Definition Oogenesis stage that begins when dying nurse cells form an anterior cap to the oocyte. Shortly after this, nurse cell dumping and growth of the oocyte are complete. Elongation of the dorsal appendages and formation of the innermost chorionic layer and endochorion begins during this stage.[ FlyBase:FBrf0021038 FlyBase:FBrf0034074 FlyBase:FBrf0043885 FlyBase:FBrf0064777 ]
Comment
Links to External Ontologies
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
Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
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
 oogenesis stage S12 (all annotations which use CV term, excluding "NOT" statements)       --
     nurse cell ring canal | oogenesis stage S12
      --       --       --
     oocyte nucleus | oogenesis stage S12
      --
      --
     oocyte | oogenesis stage S12
      --       --       --
     oocyte | oogenesis stage S12 | somatic clone
      --
      --
Spanning Tree (Parents/Children)
Only view relationship:
Vocabulary search 
developmental stage____
developmental process  |
 |__oogenesis__________|
                       oogenesis stage S12  263 rec.
                        |__oogenesis stage S12A 228 rec.
                        |__oogenesis stage S12B 228 rec.
                        |__oogenesis stage S12C 228 rec.
Spanning Tree View Settings
Parents/Children
View Depth
Show hierarchy levels: for parents, for children
hide Relationships
Is a developmental stage
Part of
Substage of oogenesis
hide Synonyms & Secondary IDs
Synonyms
Secondary IDs
hide External Crossreferences & Linkouts