title: An electron microscopic study of the newt (Triturus viridescens) optic nerve.
mesh_terms: D000818:Animals; D001369:Axons; D003593:Cytoplasm; D008854:Microscopy, Electron; D009186:Myelin Sheath; D009413:Nerve Fibers, Myelinated; D009457:Neuroglia / Q000166:cytology; D009474:Neurons / Q000166:cytology; D009900:Optic Nerve / Q000033:anatomy & histology* / Q000166:cytology; D011901:Ranvier's Nodes / Q000166:cytology; D014319:Triturus / Q000033:anatomy & histology*