Persistency of neutralizing antibodies depends on titer and interferon-beta preparation. Hegen H, Schleiser M, Gneiss C, Di Pauli F, Ehling R, Kuenz B, Lutterotti A, Berger T, Deisenhammer F Mult Scler. 2011 Oct 19. PMID: 22013146. Abstract CommentRecommendBookmarkWatch