title: VITAMIN B12 LEVELS IN THE SERUM AND CEREBROSPINAL FLUID IN MULTIPLE SCLEROSIS.
mesh_terms: D001774:Blood Chemical Analysis; D002555:Cerebrospinal Fluid; D006801:Humans; D009103:Multiple Sclerosis; D013053:Spectrophotometry; D014805:Vitamin B 12
chemical_list: D014805:Vitamin B 12
keywords: BLOOD CHEMICAL ANALYSIS; CEREBROSPINAL FLUID; MULTIPLE SCLEROSIS; SPECTROPHOTOMETRY; VITAMIN B 12