FB2026_03 , released September 17, 2026
FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term segment border muscle cell ID (Ontology) FBbt:00000483 (Fly Anatomy)
Definition Any muscle cell (FBbt:00005074) that is part of some segment border muscle (FBbt:00058316).
Also Known As "SBM muscle cell"
Comment We have adopted the nomenclature of Bate (1993) which names the muscles according to their position. There is no inference of serial homology between muscles of the same name of different thoracic and abdominal segments. Color-coded as internal in Zarin and Labrador (2019) - FBrf0245882, but grouped with LT (external) muscles in Zarin et al. (2019) - FBrf0244727.
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Data ClassFieldDirect annotations
Alleles (FBal)PHENOTYPE_MANIFEST_IN
Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
Insertions (FBti)PHENOTYPE_MANIFEST_IN
Constructs (FBtp)PHENOTYPE_MANIFEST_IN
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Relevant FlyBase reports
 Alleles Genes Insertions Constructs
 segment border muscle cell (all annotations which use CV term, excluding "NOT" statements)
     segment border muscle cell | decreased number | embryonic stage 15
      --       --       --
     segment border muscle cell | ectopic
      --
      --
     segment border muscle cell | precursor
      --
      --
     segment border muscle cell | third instar larval stage
      --       --
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transverse muscle cell
 |__lateral transverse muscle cell__
larval external muscle cell         |
 |__lateral transverse muscle cell__|
lateral transverse muscle           |
 |__lateral transverse muscle cell__|
 |__segment border muscle___________|
                                    segment border muscle cell  111 rec.
                                     |__A1-7 segment border muscle cell 37 rec.
                                     |   |__abdominal 1 segment border muscle cell 8 rec.
                                     |   |__abdominal 2 segment border muscle cell 12 rec.
                                     |   |__abdominal 3 segment border muscle cell 10 rec.
                                     |   |__abdominal 4 segment border muscle cell 10 rec.
                                     |   |__abdominal 5 segment border muscle cell 10 rec.
                                     |   |__abdominal 6 segment border muscle cell 10 rec.
                                     |   |__abdominal 7 segment border muscle cell 11 rec.
                                     |__mesothoracic segment border muscle cell 1 rec.
                                     |__metathoracic segment border muscle cell 1 rec.
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Is a lateral transverse muscle cell
Part of segment border muscle
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