FB2026_03 , released September 17, 2026
CV Term Report
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Term adult midgut region R3a ID (Ontology) FBbt:00110898 (Fly Anatomy)
Definition Subregion at the anterior end of the adult midgut region R3. It is composed of copper cells (cuprophilic cells) interspersed with interstitial cells. The posterior region R3b is distinguishable from R3a by gene expression.[ FlyBase:FBrf0216495 FlyBase:FBrf0221749 FlyBase:FBrf0222542 ]
Also Known As"region B of the adult middle midgut"
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Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
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 adult midgut region R3a (all annotations which use CV term, excluding "NOT" statements)
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adult midgut
 |__adult midgut region_______
gut section                   |
 |__adult midgut region_______|
adult midgut region           |
 |__adult midgut region R3ab__|
adult midgut region R3        |
 |__adult midgut region R3ab__|
                              adult midgut region R3a  4 rec.
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Is a adult midgut region
Part of adult midgut region R3ab
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