DUSSELDORF, Germany--(BUSINESS WIRE)--Biogen Idec (NASDAQ: BIIB) and Elan Corporation, plc (NYSE: ELN) today announced data presented at the 25th Congress of the European Committee for Treatment and Research in Multiple Sclerosis (ECTRIMS) showing the potential of TYSABRI® (natalizumab) to redefine successful multiple sclerosis (MS) therapy. These data were from observational studies and retrospective analyses of the Phase III AFFIRM clinical trial, demonstrating that TYSABRI:
