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Did you know?
Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.
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The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.
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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
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Cyanide works by making the human body unable to use oxygen.
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There are 60,000 miles of blood vessels in every adult human.