FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term cyst cell of testis ID (Ontology) FBbt:00004931 (Fly Anatomy)
Definition One of a pair of somatic cells that envelope each cyst of developing male germline cells.[ FlyBase:FBrf0064778 ]
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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      60
Insertions (FBti)  EXPRESSION_STAGE_TISSUE_POSITION      41
Insertions (FBti)  PHENOTYPE_MANIFEST_IN       9
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN      32
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 Full annotation statements 
Relevant FlyBase reports
 Alleles Genes  Insertions Constructs
 cyst cell of testis (all annotations which use CV term, excluding "NOT" statements)      63     34     10     50     37
     cyst cell of testis | absent       3       --       --       --       2
     cyst cell of testis | adult stage | ectopic | increased number       2       --       --       --       2
     cyst cell of testis | decreased number       2       --       --       --       1
     cyst cell of testis | germline clone       1       --       --       --       --
     cyst cell of testis | heat sensitive       2       --       --       1       --
     cyst cell of testis | increased number      13       --       --       --      11
     cyst cell of testis | larval stage       1       --       --       1       --
     cyst cell of testis | male       1       --       --       --       --
     cyst cell of testis | somatic clone       5       --       --       1       --
     cyst cell of testis | third instar larval stage       6       --       --       --       4
Spanning Tree (Parents/Children)
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male-specific anatomical entity__
somatic cell_____________________|
                                 somatic cell of testis
                                  |__cyst cell of testis  229 rec.
                                      |__spermatid cyst cell 30 rec.
                                      |   |__head cyst cell 25 rec.
                                      |   |__tail cyst cell 6 rec.
                                      |__spermatocyte cyst cell 6 rec.
                                      |   |__primary spermatocyte cyst cell(+) 2 rec.
                                      |   |__secondary spermatocyte cyst cell
                                      |__spermatogonial cyst cell 1 rec.
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Is a somatic cell of testis
Develops from cyst progenitor cell
Part of male germline cyst
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Synonyms
  • "cyst cell" BROAD
Secondary IDs
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