title: Old age alters density of myelin isolated from human brain.
mesh_terms: D000367:Age Factors; D000368:Aged; D001921:Brain / Q000648:ultrastructure*; D001923:Brain Chemistry; D002458:Cell Fractionation / Q000379:methods; D004591:Electrophoresis, Polyacrylamide Gel; D006801:Humans; D008875:Middle Aged; D009185:Myelin Proteins / Q000032:analysis; D009186:Myelin Sheath / Q000032:analysis / Q000648:ultrastructure
chemical_list: D009185:Myelin Proteins