Is Teva (TEVA +0.93%) genuinely concerned about Biogen's (BIIB -0.05%) BG-12's safety, or is it more concerned about the oral MS drug's impact to its own Copaxone sales? Motley Fool health-care analyst David Williamson dives into the surprise plea to the FDA and what it means for investors.
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It sent the FDA a citizens' petition regarding a pending competitor.