FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term larval B-subperineurial glial cell ID (Ontology) FBbt:00001276 (Fly Anatomy)
Definition Large subperineural glial cell that sits over the posterior commissure just medial to the longitudinal connectives (Klambt and Goodman, 1991; Ito et al., 1995). It sends processes in three directions: medially to the midline, anteriorly and posteriorly (Ito et al., 1995). Unlike the A-subperineural glial cell, the B-subperineural glial cell is only found in abdominal neuromeres, and lies at approximately the center of the segment along the antero-posterior axis (Ito et al., 1995). It develops from neuroblast NB1-1 of the abdomen (Beckervordersandforth et al., 2008).[ FlyBase:FBrf0054242 FlyBase:FBrf0057603 FlyBase:FBrf0205499 FlyBase:FBrf0214261 ]
Also Known As "B glial cell of abdomen" ; "B-SPG" ; "B-subperineurial glial cell of abdomen"
Comment
Links to External Ontologies
VFB:FBbt_00001276
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       6
Insertions (FBti)  EXPRESSION_STAGE_TISSUE_POSITION      12
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN       2
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 Full annotation statements 
Relevant FlyBase reports
 Alleles Genes Insertions Constructs
 larval B-subperineurial glial cell (all annotations which use CV term, excluding "NOT" statements)       6      4     12      5
     larval B-subperineurial glial cell | ectopic       1       --       --       1
     larval B-subperineurial glial cell | ectopic | heat sensitive       1       --       --       1
     larval B-subperineurial glial cell | increased number       1       --       --       --
Spanning Tree (Parents/Children)
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CNS subperineurial glial cell
 |__embryonic/larval CNS subperineurial glial cell__
ectodermal derivative                               |
 |__ventral ectoderm derivative_____________________|
embryonic/larval lateral glial cell                 |
 |__embryonic/larval CNS subperineurial glial cell__|
embryonic/larval subperineurial glial cell          |
 |__embryonic/larval CNS subperineurial glial cell__|
                                                    larval B-subperineurial glial cell  28 rec.
                                                     |__larval abdominal 1 B-subperineurial glial cell 1 rec.
                                                     |__larval abdominal 2 B-subperineurial glial cell
                                                     |__larval abdominal 3 B-subperineurial glial cell
                                                     |__larval abdominal 4 B-subperineurial glial cell
                                                     |__larval abdominal 5 B-subperineurial glial cell
                                                     |__larval abdominal 6 B-subperineurial glial cell
                                                     |__larval abdominal 7 B-subperineurial glial cell
                                                     |__larval abdominal 8 B-subperineurial glial cell
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Is a embryonic/larval CNS subperineurial glial cell
ventral ectoderm derivative
Develops from abdominal neuroblast NB1-1
Part of larval abdominal neuromere
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Synonyms
Secondary IDs
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VFB:FBbt_00001276