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Cases involving long-term users of Vioxx will, as Meredith Wadman reports, determine the true cost to Merck and the drug industry of the painkiller's withdrawal.
The European Patent Office could fall victim of its own success, as threatened national offices attempt to claw back some influence. Alison Abbott reports.
Advanced Cell Technology plans to tread cautiously on the ground left vacant by the collapse of a South Korean scientist's claims to have cloned a human embryo, as David Cyranoski reports.