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There are 60,000 miles of blood vessels in every adult human.
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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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The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.
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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.