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ultracentrifuge

n.
1.a high speed centrifuge used to determine the relative molecular masses of large molecules in high polymers and proteins ultracentrifuge v.
1.subject to the action of an ultracentrigue

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    Idiom of the Day

    tail between one's legs
    feeling ashamed or beaten
    The salesman resigned from his company with his tail between his legs after he told a lie about his expense account.



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