FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term prohemocyte ID (Ontology) FBbt:00005062 (Fly Anatomy)
Definition An immature hemocyte. It is highly basophilic, with a round to polygonal morphology and measures approximately 4 to 6 micrometers in diameter (Shrestha and Gateff, 1982). The nucleus is rich in nucleoli and is surrounded by a thin band of ribosome-rich cytoplasm (Shrestha and Gateff, 1982). In the larva, these cells can be found in the lymph gland primary lobe, or in circulation (Lanot et al., 2001).[ FlyBase:FBrf0074444 FlyBase:FBrf0134542 ]
Also Known As "blast cell" ; "hematopoietic precursor cell" ; "HSC" (for all, see Synonyms field below)
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Data Class Field Records
Alleles (FBal)  PHENOTYPE_MANIFEST_IN      11
Insertions (FBti)  EXPRESSION_STAGE_TISSUE_POSITION       4
Insertions (FBti)  PHENOTYPE_MANIFEST_IN       1
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN       4
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Relevant FlyBase reports
 Alleles Genes  Insertions Constructs
 prohemocyte (all annotations which use CV term, excluding "NOT" statements)      11     10      6      5      6
     prohemocyte | increased number | third instar larval stage       2       --       --       --       1
     prohemocyte | larval stage       2       --       --       --       --
     prohemocyte | third instar larval stage       7       --       --       --       4
Spanning Tree (Parents/Children)
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germ layer derivative
 |__mesodermal derivative______________
developing material anatomical entity  |
 |__somatic precursor cell_____________|
somatic cell                           |
 |__somatic precursor cell_____________|
                                       prohemocyte  136 rec.
                                        |__procrystal cell 98 rec.
                                        |__prolamellocyte
                                        |__proplasmatocyte 1 rec.
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Is a somatic precursor cell
mesodermal derivative
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CL:0000385