title: The perineurium as a diffusion barrier to protein tracers. Differences between mature and immature animals.
mesh_terms: D000367:Age Factors; D000418:Albumins / Q000032:analysis; D000818:Animals; D000831:Animals, Newborn; D002462:Cell Membrane; D002463:Cell Membrane Permeability; D004058:Diffusion
chemical_list: D000418:Albumins