FB2026_03 , released September 17, 2026
FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term subperineurial glial cell ID (Ontology) FBbt:00001258 (Fly Anatomy)
Definition Glial cell that forms the subperineurial glial sheath. These cells are polyploid. They increase in size and ploidy as the nervous system grows during development (Kremer et al., 2017).[ FlyBase:FBrf0082171 FlyBase:FBrf0217041 FlyBase:FBrf0234767 ]
Also Known As "inner perineural sheath cell" ; "inner perineurial sheath cell" ; "SPG" (for all, see Synonyms field below)
Comment
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VFB:FBbt_00001258
Annotations
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Direct annotations: records annotated with this exact term (child terms are NOT included)
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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 Full annotation statements 
Relevant FlyBase reports
 Alleles Genes Insertions Constructs
 subperineurial glial cell (all annotations which use CV term, excluding "NOT" statements)
     subperineurial glial cell | ectopic | somatic clone
      --       --       --
     subperineurial glial cell | ectopic | third instar larval stage
      --
      --
     subperineurial glial cell | embryonic stage 17
      --
      --
     subperineurial glial cell | increased number
      --       --
     subperineurial glial cell | increased number | third instar larval stage
      --       --       --
     subperineurial glial cell | somatic clone
      --
     subperineurial glial cell | somatic clone | increased number
      --       --
     subperineurial glial cell | third instar larval stage
      --
Spanning Tree (Parents/Children)
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Vocabulary search
glial cell
 |__surface glial cell___________
portion of tissue                |
 |__subperineurial glial sheath__|
perineurium                      |
 |__surface glial cell___________|
 |__subperineurial glial sheath__|
                                 subperineurial glial cell  241 rec.
                                  |__adult subperineurial glial cell 45 rec.
                                  |   |__adult brain subperineurial glial cell(+) 35 rec.
                                  |   |__adult PNS subperineurial glial cell 5 rec.
                                  |__CNS subperineurial glial cell 118 rec.
                                  |   |__adult brain subperineurial glial cell(+) 35 rec.
                                  |   |__embryonic/larval CNS subperineurial glial cell(+) 90 rec.
                                  |__embryonic/larval subperineurial glial cell 131 rec.
                                  |   |__embryonic/larval CNS subperineurial glial cell(+) 90 rec.
                                  |   |__embryonic/larval PNS subperineurial glial cell(+) 21 rec.
                                  |__PNS subperineurial glial cell 26 rec.
                                      |__adult PNS subperineurial glial cell 5 rec.
                                      |__embryonic/larval PNS subperineurial glial cell(+) 21 rec.
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Is a surface glial cell
Part of subperineurial glial sheath
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Synonyms
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VFB:FBbt_00001258