develops from exit glial cell neuroblast NB1-3 ectodermal derivative embryonic peripheral glial cell embryonic peripheral glial cell 1 2012-01-19T03:05:09Z The 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). EGM1 FBbt:00110104 EGA fly_anatomy.ontology VFB:FBbt_00110104 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). EGM2 ePG1