FB2026_03 , released September 17, 2026
FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term oogenesis stage S9 ID (Ontology) FBdv:00005269 (Fly Development)
Definition Oogenesis stage that begins when the border cells begin to migrate. During this stage: the oocyte is about 1/3 the length of the egg chamber with its nucleus located antero-dorsally; follicle cell migration results in an anterior to posterior gradient of follicle cell thickness with posterior cells being thicker (-> columnar) and posterior cells thinner ( -> squamous); border cell migration begins and ends; secretion of vitelline membrane begins.[ FlyBase:FBrf0021038 FlyBase:FBrf0034074 FlyBase:FBrf0064777 ]
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Data ClassFieldDirect annotations
Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
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 Alleles Genes Insertions Constructs
 oogenesis stage S9 (all annotations which use CV term, excluding "NOT" statements)       --
     abnormal cell migration | oogenesis stage S9
      --       --
     abnormal cell migration | oogenesis stage S9 | somatic clone
      --       --       --
     border follicle cell | oogenesis stage S9
      --       --
     border follicle cell | oogenesis stage S9 | somatic clone
      --
      --
     egg chamber | oogenesis stage S9
      --       --
     filamentous actin | oogenesis stage S9
      --       --
     increased cell death | germline clone | oogenesis stage S9
      --       --       --
     nurse cell ring canal | oogenesis stage S9
      --       --       --
     nurse cell | germline clone | oogenesis stage S9
      --       --       --
     nurse cell | oogenesis stage S9
      --       --
     oocyte nucleus | germline clone | oogenesis stage S9
      --       --       --
     oocyte nucleus | oogenesis stage S9
      --       --
     oocyte | oogenesis stage S9
      --
      --
     oocyte | oogenesis stage S9 | heat sensitive
      --       --
     oocyte | oogenesis stage S9 | somatic clone
      --       --       --
     ring canal | oogenesis stage S9
      --       --
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developmental stage____
developmental process  |
 |__oogenesis__________|
                       oogenesis stage S9  399 rec.
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Is a developmental stage
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Substage of oogenesis
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