segmental nerve root glial cell lateral segmental nerve root glial cell segmental glial cell 3 L-SNG SG3 Segmental nerve root glial cell that lies at the point where the intersegmental and segmental nerve roots meet to form a single peripheral nerve. FBbt:00001310 fly_anatomy.ontology The lateral segmental nerve root glial cell and the lateral intersegmental nerve root glial cell lie in close proximity. In some animals one of these is absent. The lateral segmental nerve root glial cell corresponds to SPG3 described by Klambt and Goodman (1991) (Ito et al., 1995). VFB:FBbt_00001310