GlaxoSmithKline spokeswoman Melinda Stubbee, from London, confirms that GSK is giving notice this week to 350 of its 17,000 worldwide research staff, including scientists, in a bid to make R&D more efficient. Glaxo employs more than 5,000 at its Upper Merion and Collegeville research centers and its Philadelphia offices. Earlier, GSK layoff rumors on the investor-oriented Seeking Alpha blog

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