FB2026_03 , released September 17, 2026
CV Term Report
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Term embryonic cardioblast ID (Ontology) FBbt:00007321 (Fly Anatomy)
Definition Embryonic precursor of a cardial cell, which forms part of the inner, contractile layer of the dorsal vessel. These cells become morphologically distinct during stage 14, when they stretch, flatten and develop dorsally directed processes (Campos-Ortega and Hartenstein, 1997). During dorsal closure, they are squeezed between the amnioserosa and epidermis, and the cardioblasts of either side meet at the dorsal midline once the amnioserosa separates from the epidermis (Campos-Ortega and Hartenstein, 1997). The dorsal vessel is formed when the lateral edges of the cardioblasts curve around ventrally to meet and interdigitate leaving a medial lumen (Campos-Ortega and Hartenstein, 1997). These cells do not finish differentiating into specialized subtypes until after larval hatching (Lehmacher et al., 2012).[ FlyBase:FBrf0089570 FlyBase:FBrf0151925 FlyBase:FBrf0219200 ]
Also Known As"embryonic cardiomyoblast"
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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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 Alleles Genes Insertions Constructs
 embryonic cardioblast (all annotations which use CV term, excluding "NOT" statements)
     embryonic cardioblast | decreased number
      --       --       --
     embryonic cardioblast | embryonic stage 14
      --       --       --
     embryonic cardioblast | embryonic stage 15
      --       --
     embryonic cardioblast | increased number
      --       --
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  somatic cell
   |__dorsal vessel wall cell
       |__embryonic cardioblast  225 rec.
           |__embryonic aortic cardioblast 6 rec.
           |   |__embryonic aorta ostial cardioblast
           |   |__embryonic cardiac outflow tract cardioblast 2 rec.
           |__embryonic heart cardioblast 109 rec.
           |   |__embryonic heart ostial cardioblast 36 rec.
           |__embryonic ostial cardioblast 36 rec.
               |__embryonic aorta ostial cardioblast
               |__embryonic heart ostial cardioblast 36 rec.
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Is a dorsal vessel wall cell
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