FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
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Term adult midgut constriction R4-R5 ID (Ontology) FBbt:00110918 (Fly Anatomy)
Definition Constriction of the adult midgut. It corresponds to the beginning of the midgut ascension towards the hindgut, where the radius of the midgut uniformly decreases. It separates region 4 (R4) from region 5 (R5).[ FlyBase:FBrf0221749 ]
Also Known As "boundary R4-R5" ; "BR4-R5"
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  multi-tissue structure
   |__adult midgut constriction
       |__adult midgut constriction R4-R5
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