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(Local news reports compared it to smoking a pack of cigarettes a day.) And small particles are the worst: particles less than 2.5 micrometers in diameter, also known as fine particles or PM2.5, pose the greatest risk to health, according to the EPA

Studies show it can alter infant sleep patterns, reducing active sleep and increasing arousals

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& Marshman, J

HuangFu et al

Next, specimens were dehydrated through an ascending ethanol series, starting with 50% ethanol, followed by incubation in 70% ethanol, 1% uranyl acetate (#21447, Polyscience Europe, Heidelberg, Germany), and 1% phosphotungstic acid (#455970, Merck, Darmstadt, Germany) solution overnight at 4 C