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Related Tags >> Biogen Idec   Elan   PML   drug safety
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Tysabri News

Most Popular Tysabri Story

Biogen: Tysabri patients have PML

Biogen Idec CEO James Mullen predicted it, and now it's happened: Two Tysabri patients have come down with the potentially fatal brain infection, progressive multifocal leukoencephalopathy, or PML,... Read more...

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