All dose levels were well tolerated, with patients experiencing only mild side effects, such as flu-like symptoms.

所有剂量水平的治疗均处于可接受范围内，病人仅出现轻微的副作用，比如流感样症状。

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These germs normally cause fatigue and ruffled fur in mice, although the researchers used dose levels too low to cause symptoms.

虽然研究人员所用剂量水平很低不致引发症状，但是这些微生物还是常规地引起小鼠疲劳和皮毛起皱。

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Hormesis is that decreased risk of adverse effects would occur with increased dose levels when subjects are exposed to toxin at low levels.

毒物兴奋效应是指在较低药物剂量水平时，随着剂量水平的增加，受试者对药物的不良反应降低。

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But one thing is clear: almost all of the evidence cited by anti-chemical campaigners is based on research linking phthalates to reproductive problems in rodents exposed to dose levels far higher than any human might face.

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Others fill the prescriptions and dose themselves at levels lower than prescribed, taking a half pill, say, instead of a whole one.

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The backscatter machine "delivers an extremely low dose of ionizing radiation" with levels "below the acceptable limits, " the report stated.

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