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The familiar sounds of your heart are made by the heart's valves as they open and close.
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The FDA recognizes 118 routes of administration.
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Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.
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Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.
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The average office desk has 400 times more bacteria on it than a toilet.