FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term neuropil glial sheath ID (Ontology) FBbt:00007117 (Fly Anatomy)
Definition Glial layer that largely surrounds a region of synaptic neuropil in the central nervous system (Younossi-Hartenstein et al., 2003). It is mainly formed by synaptic neuropil ensheathing glia, but these cells also frequently branch into neuropil domains and the layer also contains nuclei of reticular glia (Kremer et al., 2017).[ FlyBase:FBrf0155900 FlyBase:FBrf0234767 ]
Also Known As "glial boundary" ; "glial septum"
Comment
Links to External Ontologies
VFB:FBbt_00007117
Annotations
Records annotated with this term OR any of its CHILD TERMS
Records annotated with this exact term (annotations to child terms are NOT included)
Data Class Field Records
Alleles (FBal)  PHENOTYPE_MANIFEST_IN       2
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN       1
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 Full annotation statements 
Relevant FlyBase reports
 Alleles Insertions Constructs
 neuropil glial sheath (all annotations which use CV term, excluding "NOT" statements)       2      1     21
     neuropil glial sheath | late embryonic stage       2       --       1
Spanning Tree (Parents/Children)
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  multicellular structure
   |__portion of tissue
       |__neuropil glial sheath  418 rec.
           |__adult neuropil glial sheath 245 rec.
           |__larval neuropil glial sheath 187 rec.
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Is a portion of tissue
Part of central nervous system
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VFB:FBbt_00007117