Magnesium concentration in plasma and erythrocytes in MS. Acta Neurol Scand. 1995 Jul;92(1):109-11.

In a 1995 paper published in the journal Acta Neurologica Scandinavica, patients with multiple sclerosis were found to be low in cellular magnesium. http://www.ncbi.nlm.nih.gov/pubmed/7572055?dopt=Abstract