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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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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 B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
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Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.
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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.