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In 1864, the first barbiturate (barbituric acid) was synthesized.
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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.
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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 familiar sounds of your heart are made by the heart's valves as they open and close.