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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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Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.
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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
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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.