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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Illicit drug use costs the United States approximately $181 billion every year.
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The average adult has about 21 square feet of skin.
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Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.
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During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).
Summation of Heart Sounds, Normal S1
Right sided heart failure
HEART
POSTERIOR AND ANTERIOR SHEEP HEART
Personality Behavior Patterns and Their Risks for Heart Disease