Switch on the vacuum to draw the solution through the column (The plasmid DNA binds to the column material).

开启真空装置使液体通过管柱（质体DNA会与管柱物质结合）。

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But I know it will be great material for my column.

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The rest of the vertical column is made from a material called syntactic foam - a solid made mostly of hollow "microballoons" - giving it enough buoyancy to float back up.

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As I noted in my Week Ahead column, the action of the financial and material stocks may be an important development for the overall market.

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