FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
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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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      31
Insertions (FBti)  EXPRESSION_STAGE_TISSUE_POSITION      19
Insertions (FBti)  PHENOTYPE_MANIFEST_IN       3
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN      16
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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)      31      9     22     18
     male germline cyst | adult stage       3       --       1      2
     male germline cyst | somatic clone | spermatogenesis       5       --       --       --
     male germline cyst | temperature conditional       2       --       --       1
     male germline cyst | third instar larval stage       5       --       --       3
Spanning Tree (Parents/Children)
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multi-tissue structure
 |__germline cyst____________________
anatomical entity                    |
 |__male-specific anatomical entity__|
                                     male germline cyst  2288 rec.
                                      |__spermatid cyst 1189 rec.
                                      |__spermatocyte cyst 1000 rec.
                                      |   |__primary spermatocyte cyst(+) 268 rec.
                                      |   |__secondary spermatocyte cyst 35 rec.
                                      |__spermatogonial cyst 419 rec.
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Is a germline cyst
male-specific anatomical entity
Part of testis
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Synonyms
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