FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term cystic bulge ID (Ontology) FBbt:10005989 (Fly Anatomy)
Definition Individualisation of spermatids takes place within this bulge - a membrane-cytoskeletal complex that resolves the shared membrane of the spermatid bundle into individual membranes encasing each spermatid and which progresses along the entire length of the spermatid bundle, from head to tail.[ FlyBase:FBrf0064778 FlyBase:FBrf0158862 ]
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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      77
Insertions (FBti)  PHENOTYPE_MANIFEST_IN      11
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN      21
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Relevant FlyBase reports
 Alleles Genes Insertions Constructs
 cystic bulge (all annotations which use CV term, excluding "NOT" statements)      77      4     11     21
     cystic bulge | absent      12       --       1      9
     cystic bulge | decreased number       5       --       2      4
     cystic bulge | spermatogenesis       3       --       --       --
Spanning Tree (Parents/Children)
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anatomical structure
 |__multi-cell-component structure___
anatomical entity                    |
 |__male-specific anatomical entity__|
                                     cystic bulge  113 rec.
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Is a multi-cell-component structure
male-specific anatomical entity
Part of individualization stage spermatid
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Synonyms
  • "individualization complex" RELATED
Secondary IDs
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