FB2026_03 , released September 17, 2026
CV Term Report
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Term adult external prothorax ID (Ontology) FBbt:00004558 (Fly Anatomy)
Definition All external features of the first adult thoracic segment.[ FlyBase:FBrf0007734 ]
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Alleles (FBal)PHENOTYPE_MANIFEST_IN
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 adult external prothorax (all annotations which use CV term, excluding "NOT" statements)
     adult external prothorax | ectopic
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prothoracic segment
 |__adult prothoracic segment__________________
adult thorax                                   |
 |__adult external thorax______________________|
adult thoracic segment                         |
 |__adult prothoracic segment__________________|
adult integumentary system                     |
 |__adult external thorax______________________|
 |__segmental subdivision of adult integument__|
segmental subdivision of integument            |
 |__segmental subdivision of adult integument__|
tagmatic subdivision of integument             |
 |__adult external thorax______________________|
                                               adult external prothorax  133 rec.
                                                |__adult ventral external prothorax 14 rec.
                                                |   |__prothoracic articulation
                                                |   |__prothoracic leg foramen
                                                |   |__prothoracic pleurum(+) 8 rec.
                                                |   |__prothoracic sternal apodeme 8 rec.
                                                |   |__prothoracic sternum(+) 3 rec.
                                                |__pronotum 128 rec.
                                                |   |__postpronotum(+) 107 rec.
                                                |   |__prepronotum
                                                |__prosternal sense organ
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Is a segmental subdivision of adult integument
Part of adult prothoracic segment
adult external thorax
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