FB2026_03 , released September 17, 2026
FB2026_03 , released September 17, 2026
CV Term Report
Help Close All Open All
General Information
Term border follicle cell ID (Ontology) FBbt:00004905 (Fly Anatomy)
Definition A follicle cell that migrates from the anterior pole of the egg chamber, between the nurse cells, to the anterior of the oocyte where they participate in formation of the micropyle. About 6-10 border cells per egg chamber migrate as a tightly associated cluster.[ FlyBase:FBrf0064777 FlyBase:FBrf0217092 FlyBase:FBrf0247148 ]
Also Known As "border cell"
Comment Can be identified based on expression of slbo (Rust et al., 2020).
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
Alleles (FBal)PHENOTYPE_MANIFEST_IN
Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
Insertions (FBti)PHENOTYPE_MANIFEST_IN
Constructs (FBtp)PHENOTYPE_MANIFEST_IN
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
 border follicle cell (all annotations which use CV term, excluding "NOT" statements)
     border follicle cell | adult stage
      --       --       --
     border follicle cell | cell autonomous | somatic clone
      --       --       --       --
     border follicle cell | cell non-autonomous
      --       --       --       --
     border follicle cell | cell non-autonomous | conditional
      --       --       --
     border follicle cell | cell non-autonomous | ectopic | somatic clone
      --       --       --
     border follicle cell | cell non-autonomous | somatic clone
      --       --       --
     border follicle cell | clone of cells
      --       --
      --
     border follicle cell | conditional
      --       --       --
     border follicle cell | decreased number
      --       --       --
     border follicle cell | ectopic
      --       --       --
     border follicle cell | ectopic | somatic clone
      --       --       --
     border follicle cell | germline clone
      --       --
      --
     border follicle cell | heat sensitive
      --       --
     border follicle cell | increased number
      --       --       --
     border follicle cell | increased number | somatic clone
      --       --       --
     border follicle cell | oogenesis stage S10
      --       --
     border follicle cell | oogenesis stage S10 | somatic clone
      --       --
      --
     border follicle cell | oogenesis stage S10A | somatic clone
      --       --       --       --
     border follicle cell | oogenesis stage S9
      --       --       --
     border follicle cell | oogenesis stage S9 | somatic clone
      --       --
      --
     border follicle cell | somatic clone
      --       --
     border follicle cell | somatic clone | increased number
      --       --       --
     border follicle cell | temperature conditional
      --       --
      --
Spanning Tree (Parents/Children)
Only view relationship:
Vocabulary search
egg chamber_______________
somatic cell of ovariole__|
adult epithelial cell_____|
                          follicle cell
                           |__border follicle cell  1054 rec.
Spanning Tree View Settings
Parents/Children
View Depth
Show hierarchy levels: for parents, for children
hide Relationships
Is a follicle cell
Develops from anterior terminal follicle cell
Part of
hide Synonyms & Secondary IDs
Synonyms
Secondary IDs
hide External Crossreferences & Linkouts
CL:0000579