WASHINGTON, Aug 25 (Reuters) - A warning on Biogen Idec and Elan Corp’s drug, Tysabri, has been revised following two recent reports of a potentially fatal brain infection, Biogen said on Monday.
WASHINGTON, Aug 25 (Reuters) - A warning on Biogen Idec and Elan Corp’s drug, Tysabri, has been revised following two recent reports of a potentially fatal brain infection, Biogen said on Monday.
