The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.
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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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Cyanide works by making the human body unable to use oxygen.
Large numbers of plant species can flower at once in this grassland in Kinsella, Alberta.
Focusing in on the location of photosynthesis in a plant.
Plant
A Fischer-Tropsch processing plant is able to produce a variety of fuels from coal.