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One ml of extraction buffer (1g polyvinylpyrolidone (PVP) dissolved in 100 ml of stock buffer containing 50 mM HEPES, 8 mM MgCl2, 2 mM EDTA, 50 mM Mercapto and 12.5% glycerol dissolved in 500 ml of distilled water and pH
adjusted to 8 with trizma base) was added, vortexed and the sample kept on ice.

[ Last edited by xiaoweiwei8033 on 2009-9-13 at 09:19 ]
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