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Your heart beats over 36 million times a year.
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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.
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In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.
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The average office desk has 400 times more bacteria on it than a toilet.