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Did you know?
The average office desk has 400 times more bacteria on it than a toilet.
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
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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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To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.
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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.