FB2026_02 , released June 18, 2026
FB2026_02 , released June 18, 2026
CV Term Report
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General Information
Term vitelline membrane ID (Ontology) FBbt:00000042 (Fly Anatomy)
Definition A protective layer that is apposed to the oocyte and forms part of the eggshell. It is surrounded by a thin wax layer, followed by the inner chorionic layer. The vitelline membrane is approximately 300nm wide, and appears as a continuous granular layer without evident substructure.[ FlyBase:FBrf0029042 FlyBase:FBrf0035166 ]
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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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 Alleles Genes Images Insertions Constructs
 vitelline membrane (all annotations which use CV term, excluding "NOT" statements)
     vitelline membrane | maternal effect
      --       --       --       --
     vitelline membrane | somatic clone
      --       --       --
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anatomical structure
 |__egg_____________________________
 |__acellular anatomical structure__|
                                    vitelline membrane  67 rec.
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Is a acellular anatomical structure
Part of egg
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UBERON:0003125