BUZZ-Tekmira Pharmaceuticals Corp: Stock falls
** Canadian drugmaker's U.S.-listed shares down 12 pct at $20.94
** Up to Monday's close, Tekmira's Nasdaq-listed stock had risen nearly 68 pct since Aug 7, the day U.S. regulators allowed company to test its experimental drug in people infected with Ebola, relaxing its stance after blocking human tests last month
** Company is expected to post Q2 results on Wednesday
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