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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.
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Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.
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The average office desk has 400 times more bacteria on it than a toilet.
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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.