Two serious adverse events - one ending in death - was enough for Biogen Idec Inc. and Elan Corp. plc to suspend marketing of their multiple sclerosis drug, Tysabri, just three months after FDA approval. (BioWorld International)

Two serious adverse events - one ending in death - was enough for Biogen Idec Inc. and Elan Corp. plc to suspend marketing of their multiple sclerosis drug, Tysabri, just three months after FDA approval. (BioWorld Today)