title: Perivenous sheathing in multiple sclerosis.
mesh_terms: D000328:Adult; D005260:Female; D006652:Histological Techniques; D006801:Humans; D008297:Male; D008875:Middle Aged; D009103:Multiple Sclerosis / Q000473:pathology*; D012169:Retinal Vein / Q000473:pathology*