To make absolutely certain, the team used two different strains of parasite in different groups of mice.

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Further, to make absolutely certain that the grid cannot own any power stations.

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"I'm 90% there and my first priority for this year is to make absolutely certain of my place, " he said.

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It has split the Conservative Party wide open and threatens to make its defeat in the next election, already quite likely, absolutely certain.

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Make absolutely certain that it says what you want it to say, that there are no grey areas, and that there are no loopholes by which you can get burnt.

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