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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 first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
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Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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Excessive alcohol use costs the country approximately $235 billion every year.