FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term proximal costal vein ID (Ontology) FBbt:00004758 (Fly Anatomy)
Definition Proximal-most segment of the costal vein. It bears two rows (dorsal an ventral) of bracted microchaetae with a single unbracted microchaeta between the two rows.[ FlyBase:FBrf0031004 ]
Also Known As"PCo"
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Data ClassFieldDirect annotations
Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
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 proximal costal vein (all annotations which use CV term, excluding "NOT" statements)
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wing
 |__wing vein segment_____
cuticular specialization  |
 |__wing vein segment_____|
longitudinal vein         |
 |__costal vein___________|
                          proximal costal vein  8 rec.
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Is a wing vein segment
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