FB2026_03 , released September 17, 2026
FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term germinal proliferation center ID (Ontology) FBbt:00005259 (Fly Anatomy)
Definition Structure formed by the male germline stem cells, cyst progenitor cells and the hub around which they are clustered and to which they are attached. It is located at the apical (blind) end of the testis.[ FlyBase:FBrf0024468 FlyBase:FBrf0064778 ]
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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
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 Full annotation statements 
Relevant FlyBase reports
 Alleles Genes Insertions Constructs
 germinal proliferation center (all annotations which use CV term, excluding "NOT" statements)
     germinal proliferation center | adult stage
      --       --
     germinal proliferation center | embryonic stage 17
      --
      --
     germinal proliferation center | somatic clone | spermatogenesis
      --       --       --
     germinal proliferation center | spermatogenesis
      --       --
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adult
 |__testis___________________________
gonad                                |
 |__testis___________________________|
male reproductive system             |
 |__testis___________________________|
male organism                        |
 |__male-specific anatomical entity__|
male-specific anatomical entity      |
 |__testis___________________________|
multicellular structure              |
 |__multi-tissue structure___________|
anatomical entity                    |
 |__male-specific anatomical entity__|
                                     germinal proliferation center  737 rec.
                                      |__cyst progenitor cell 260 rec.
                                      |__germinal proliferation center hub 244 rec.
                                      |   |__hub cell 211 rec.
                                      |__male germline stem cell 448 rec.
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Is a multi-tissue structure
male-specific anatomical entity
Part of testis
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