FB2026_03 , released September 17, 2026
FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term male germline cyst ID (Ontology) FBbt:00007136 (Fly Anatomy)
Definition Unit of spermatogenic differentiation consisting of a pair of cyst cells enclosing the developing germline cells.[ 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
 male germline cyst (all annotations which use CV term, excluding "NOT" statements)
     male germline cyst | adult stage
      --
     male germline cyst | somatic clone | spermatogenesis
      --       --       --
     male germline cyst | temperature conditional
      --       --
     male germline cyst | third instar larval stage
      --       --
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adult
 |__testis___________________________
gonad                                |
 |__testis___________________________|
male reproductive system             |
 |__testis___________________________|
male organism                        |
 |__male-specific anatomical entity__|
multi-tissue structure               |
 |__germline cyst____________________|
male-specific anatomical entity      |
 |__testis___________________________|
anatomical entity                    |
 |__male-specific anatomical entity__|
                                     male germline cyst  2304 rec.
                                      |__cyst cell of testis 235 rec.
                                      |   |__spermatid cyst cell(+) 30 rec.
                                      |   |__spermatocyte cyst cell(+) 6 rec.
                                      |   |__spermatogonial cyst cell 1 rec.
                                      |__spermatid cyst 1198 rec.
                                      |   |__spermatid(+) 1126 rec.
                                      |   |__spermatid cyst cell(+) 30 rec.
                                      |__spermatocyte cyst 1007 rec.
                                      |   |__primary spermatocyte cyst(+) 268 rec.
                                      |   |__secondary spermatocyte cyst(+) 35 rec.
                                      |   |__spermatocyte(+) 920 rec.
                                      |   |__spermatocyte cyst cell(+) 6 rec.
                                      |__spermatogonial cyst 419 rec.
                                          |__spermatogonial cyst cell 1 rec.
                                          |__spermatogonium(+) 367 rec.
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Is a germline cyst
male-specific anatomical entity
Part of testis
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