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The longest a person has survived after a heart transplant is 24 years.
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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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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 lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.
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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.