FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term frontal sac ID (Ontology) FBbt:00015911 (Fly Anatomy)
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Data ClassFieldDirect annotations
Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
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 frontal sac (all annotations which use CV term, excluding "NOT" statements)
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embryo
 |__late embryo_________________
dorsal closure embryo           |
 |__stage 15 embryo_____________|
anatomical structure            |
 |__multicellular structure_____|
ectodermal derivative           |
 |__dorsal ectoderm derivative__|
                                frontal sac  8 rec.
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Is a dorsal ectoderm derivative
multicellular structure
Develops from dorsal ridge
embryonic procephalic segment
Part of stage 15 embryo
late embryo
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