FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term embryonic peripheral glial cell 1 ID (Ontology) FBbt:00110104 (Fly Anatomy)
Definition Embryonic peripheral glial cell associated with the intersegmental nerve (ISN). It is the most medially located peripheral glial cell, close to the transition zone between the CNS and the PNS (exit area). It develops from neuroblast 1-3 (von Hilchen et al., 2008) and gives rise to a wrapping glial cell (von Hilchen et al., 2013).[ FlyBase:FBrf0204826 FlyBase:FBrf0222452 ]
Also Known As"ePG1"
CommentThe position of the cell body of ePG1 can be variable. It is the most medial cell 63% of the time, but it can also be found at the positions of ePG2 (7%) or ePG3 (31%). This analysis was done using specific cell markers and taking into account which nerve the cell is associated with (von Hilchen et al., 2008).
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VFB:FBbt_00110104
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Data ClassFieldDirect annotations
Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
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 embryonic peripheral glial cell 1 (all annotations which use CV term, excluding "NOT" statements)
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germ layer derivative
 |__ectodermal derivative____________
PNS glial cell                       |
 |__exit glial cell__________________|
embryonic glial cell                 |
 |__embryonic peripheral glial cell__|
                                     embryonic peripheral glial cell 1  6 rec.
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Is a exit glial cell
ectodermal derivative
embryonic peripheral glial cell
Develops from neuroblast NB1-3
Part of
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VFB:FBbt_00110104