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.
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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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Vaccines prevent between 2.5 and 4 million deaths every year.
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The average office desk has 400 times more bacteria on it than a toilet.
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By definition, when a medication is administered intravenously, its bioavailability is 100%.
Production efficiency.
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