Study raises hope key Elan drug will make comeback| Reuters.co.uk

click for article: Reuters.co.ukA safety study for Elan Corp.'s (ELN.I: Quote, Profile, Research) (ELN.N: Quote, Profile, Research) multiple sclerosis drug Tysabri has found no new confirmed cases of the brain disease that prompted the Irish company to pull the drug, it said on Tuesday, and its shares soared 21 percent.