BIIB/ELN started an RRMS “switching” study of Tysabri vs Copaxone or Rebif. (See #msg-46709942 and #msg-39971611 for background on where these drugs stand commercially.) clinicaltrials.gov entry: http://clinicaltrials.gov/ct2/show/NCT01058005 Today’s press release: http://finance.yahoo.com/news/Biogen-Idec-and-Elan-Enroll-bw-434267012.html?x=0&.v=1