Figure 4: Regeneration of nerve fibers and migration of neuronal and glial cells from SC and DRG slices of rat fetuses cultured for 3 days (A&B) and 15 days (C) in NVR gel after vitrification. (A&B) Phase-contrast microscopy, (C) immunefluorescent double staining of migrated cells. Glial cells are marked in red (anti S-100 antibodies) and neurons in green (anti neurofilament antibodies).