FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term anal imaginal ring ID (Ontology) FBbt:00001841 (Fly Anatomy)
Definition Imaginal tissue of the larva from which the adult anus develops.[ FlyBase:FBrf0064792 ]
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Data ClassFieldDirect annotations
Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
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 anal imaginal ring (all annotations which use CV term, excluding "NOT" statements)
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abdominal segment 11
 |__larval abdominal segment 11____
larval telson                      |
 |__larval abdominal segment 11____|
larval imaginal tissue             |
 |__imaginal ring__________________|
embryonic/larval rectum            |
 |__embryonic/larval anus__________|
organ system subdivision           |
 |__gut section____________________|
ectodermal derivative              |
 |__posterior ectoderm derivative__|
gut                                |
 |__gut section____________________|
anus                               |
 |__embryonic/larval anus__________|
larval terminal segment            |
 |__larval abdominal segment 11____|
                                   anal imaginal ring  1 rec.
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Is a imaginal ring
posterior ectoderm derivative
gut section
Develops from embryonic precursor of adult hindgut
Part of larval abdominal segment 11
embryonic/larval anus
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