The epineural sheath of a nerve as a barrier to the diffusion of phosphate ions.
D006652:Histological Techniques; D007477:Ions; D009995:Osmosis; D010539:Permeability; D010710:Phosphates / Q000378:metabolism*
D007477:Ions; D010710:Phosphates
NERVES/anatomy and histology; NERVES/physiology; OSMOSIS AND PERMEABILITY; PHOSPHATES/metabolism