title: Permeability of the perineurium of small nerve fascicles: an ultrastructural study using ferritin in rats.
mesh_terms: D000818:Animals; D002463:Cell Membrane Permeability; D005293:Ferritins; D008297:Male; D008854:Microscopy, Electron; D009474:Neurons / Q000648:ultrastructure*; D051381:Rats; D013997:Time Factors
chemical_list: D005293:Ferritins