Bidirectional trans-synaptic axonal degeneration in the visual pathway in multiple sclerosis. Balk L, Steenwijk MD, Tewarie P, Daams M, Killestein J, Wattjes MP, Vrenken H, Barkhof F, Polman CH, Uitdehaag BMJ, et al. J Neurol Neurosurg Psychiatry. 2014 Jun 27. PMID: 24973342. Abstract CommentRecommendBookmarkWatch