FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
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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Data Class Field Records
Alleles (FBal)  PHENOTYPE_MANIFEST_IN       1
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 Alleles Genes Constructs
 trunk mesoderm (all annotations which use CV term, excluding "NOT" statements)       1    994      4
Spanning Tree (Parents/Children)
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developing material anatomical entity
 |__developing embryonic structure__
 |__primordium______________________|
                                    trunk mesoderm  1383 rec.
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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