title: Vitamin B12 deficiency, demyelination, and multiple sclerosis.
mesh_terms: D000328:Adult; D003711:Demyelinating Diseases / Q000150:complications*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009103:Multiple Sclerosis / Q000150:complications*; D014806:Vitamin B 12 Deficiency / Q000150:complications*