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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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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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Always store hazardous household chemicals in their original containers out of reach of children. These include bleach, paint, strippers and products containing turpentine, garden chemicals, oven cleaners, fondue fuels, nail polish, and nail polish remover.
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More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.