Magic bullets for understanding metastasis "have been proposed again and again, and nothing has ever held up, " says Richard Klausner, former head of the National Cancer Institute and now a principal at the Column Group, a venture capital firm.

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The Seleka fighters benefited from the growing dissatisfaction with Bozize, who came to power in 2003, at the helm of a column of a different rebel group which also invaded the capital and toppled the former leader.

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I'm even cautiously optimistic that the current impasse over gun regulation is a bad-equilibrium that few consumers actually want, and that a reconstructed Freedom Group, fighting for sensible change as a fifth column from within the industry, might well find that many people -- even a significant portion of the NRA's members -- would buy from a truly responsible (and high quality) gunmaker if given the chance.

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Soon after the column was published I got a scolding letter from John Bogle, founder of Vanguard Group and patron saint of cheap index funds.

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In a column on Tuesday in the country's the Nation newspaper, former Pakistan Air Force group captain S.M.

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If you want to start a new group in your area, start a Discussion Topic under the Discussions tab in the left-hand column on Facebook.

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