Mikovits says if all the samples in these studies test negative, including in her own lab, the day could come when she changes her mind.

Mikovits说，如果这些实验中所有的样品，包括她自己实验室的那些，检测结果真的全部为阴性的话，她将会改变自己的看法。

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Why do some areas test negative for chlorine?

为什麽有些区域的氯测试为阴性？

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METHODS: 1 case of penicillin skin test negative allergic reaction caused by intravenous infusion was reported and analyzed.

方法：报道并分析青霉素皮试阴性静脉滴注致过敏反应1例。

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The U.S. Environmental Protection Agency's drinking-water regulations require that all samples test negative for E.coli.

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Those who test negative for a serious and costly disease may drop coverage, while those who test positive may add or increase coverage.

ECONOMIST: Genetics, medicine and insurance

If you test negative for this potentially serious condition, then you can begin a trial to see just how gluten-sensitive you are, if at all.

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