FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
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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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      20
Insertions (FBti)  EXPRESSION_STAGE_TISSUE_POSITION       1
Insertions (FBti)  PHENOTYPE_MANIFEST_IN       2
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN      13
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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)      20      6      3     14
     germinal proliferation center | adult stage       7       --       --       7
     germinal proliferation center | embryonic stage 17       4       --       1       --
     germinal proliferation center | somatic clone | spermatogenesis       1       --       --       --
     germinal proliferation center | spermatogenesis       7       --       --       6
Spanning Tree (Parents/Children)
Only view relationship:
multicellular structure
 |__multi-tissue structure___________
anatomical entity                    |
 |__male-specific anatomical entity__|
                                     germinal proliferation center  712 rec.
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Is a multi-tissue structure
male-specific anatomical entity
Part of testis
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Synonyms
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