FB2026_03 , released September 17, 2026
FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term primary lobe of embryonic/larval lymph gland ID (Ontology) FBbt:00001669 (Fly Anatomy)
Definition Anterior-most and largest of the 3-6 lobe pairs of the third instar embryonic/larval lymph gland. These lobes are bulbous. Three distinct zones are identified: the medullary zone in the center, the cortical zone in the periphery and the posterior signaling center. At the late third instar the posterior signaling center functions as a stem-cell niche, the medullary zone contains quiescent prohemocytes, and the cortical zone the proliferating hemocytes (plasmatocytes) and procrystal and crystal cells.[ FlyBase:FBrf0074444 FlyBase:FBrf0187467 FlyBase:FBrf0208762 FlyBase:FBrf0228946 ]
Also Known As "anterior lymph gland pair" ; "primary lymph gland lobe"
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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
 primary lobe of embryonic/larval lymph gland (all annotations which use CV term, excluding "NOT" statements)
     primary lobe of embryonic/larval lymph gland | absent | larval stage
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     primary lobe of embryonic/larval lymph gland | larval stage
      --
     primary lobe of embryonic/larval lymph gland | larval stage | somatic clone - tissue specific
      --       --       --
     primary lobe of embryonic/larval lymph gland | somatic clone | third instar larval stage
      --       --
     primary lobe of embryonic/larval lymph gland | third instar larval stage
      --       --
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larval circulatory system__
multi-tissue structure_____|
trunk mesoderm derivative__|
                           embryonic/larval lymph gland
                            |__primary lobe of embryonic/larval lymph gland  227 rec.
                                |__cortical zone of lymph gland primary lobe 72 rec.
                                |   |__larval adipohemocyte 4 rec.
                                |__intermediate zone of lymph gland primary lobe
                                |   |__larval hemocyte intermediate progenitor cell
                                |__medullary zone of lymph gland primary lobe 32 rec.
                                |__posterior signaling center of lymph gland primary lobe 58 rec.
                                    |__lymph gland posterior signaling center cell 17 rec.
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Is a embryonic/larval lymph gland
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