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Author Question: The prostate-specific antigen test, or PSA, is a clinical test that measures the level of a protein ... (Read 65 times) |
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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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Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.
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The human body produces and destroys 15 million blood cells every second.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.