FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term trunk mesoderm ID (Ontology) FBbt:00000128 (Fly Anatomy)
Definition Region of mesoderm of that forms a layer interior to the ectoderm of the germ band (Campos-Ortega and Hartenstein, 1997). Following its invagination during ventral furrow formation in stages 6 and 7, it remains a coherent structure with no morphologically apparent subdivisions, apart from transient metamery during stage 9, until stage 11 (Campos-Ortega and Hartenstein, 1997). Its cells divide following invagination and it loses its epithelial integrity, forming a monolayer of cuboidal cells by stage 9 (Campos-Ortega and Hartenstein, 1997). A further division happens during stage 10 leading to two distinct layers by stage 11 (Campos-Ortega and Hartenstein, 1997).[ FlyBase:FBrf0089570 ]
Also Known As"mesoderm of the germ layer"
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Alleles (FBal)PHENOTYPE_MANIFEST_IN
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 trunk mesoderm (all annotations which use CV term, excluding "NOT" statements)
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embryo
 |__developing embryonic structure_____
germ layer                             |
 |__mesoderm___________________________|
developing embryonic structure         |
 |__germ band__________________________|
developing material anatomical entity  |
 |__developing embryonic structure_____|
 |__primordium_________________________|
                                       trunk mesoderm  1383 rec.
                                        |__cardiogenic mesoderm 101 rec.
                                        |   |__somatic cell of cardiogenic mesoderm(+)
                                        |__somatic cell of trunk mesoderm
                                        |   |__somatic cell of cardiogenic mesoderm(+)
                                        |   |__somatic cell of somatic trunk mesoderm
                                        |   |__somatic cell of visceral trunk mesoderm
                                        |__somatic trunk mesoderm 138 rec.
                                        |   |__somatic cell of somatic trunk mesoderm
                                        |__visceral trunk mesoderm 346 rec.
                                            |__somatic cell of visceral trunk mesoderm
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Is a developing embryonic structure
primordium
Develops from trunk mesoderm anlage
Part of germ band
mesoderm
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Synonyms
  • "AtrunkMes" RELATED
    "mesoderm of the germ layer" EXACT[ FlyBase:FBrf0089570 ]
    "P2 TrMes" RELATED
    "TrMes" RELATED
Secondary IDs
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UBERON:6000128