develops from develops into exit glial cell neuroblast NB5-6 ectodermal derivative embryonic peripheral glial cell embryonic/larval PNS perineurial glial cell embryonic peripheral glial cell 2 2012-01-19T03:05:09Z FBbt:00110105 EGM2 EGM1 fly_anatomy.ontology The position of the cell body of ePG2 is variable. It is the middle cell of the exit zone 38% of the time, but it can also be found at the positions of ePG1 (18%) or ePG3 (44%). This analysis was done using specific cell markers and taking into account which nerve the cell is associated with (von Hilchen et al., 2008). EGA Embryonic peripheral glial cell associated with the segmental nerve (SN). It is located in the transition zone between the CNS and the PNS (exit area), laterally to ePG1 and medially to ePG3. It develops from neuroblast 5-6 (von Hilchen et al., 2008). It divides after embryogenesis and gives rise to up to 30 cells belonging to the perineurial glial sheath (von Hilchen et al., 2013). VFB:FBbt_00110105 ePG2