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About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

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The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

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There are more bacteria in your mouth than there are people in the world.

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According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

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A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

Nebulizer. The nebulizer converts a liquid medication to a mist that is easily inhaled. A face mask, Nebulizer. The nebulizer converts a liquid medication to a mist that is easily inhaled. A face mask,
Vice President Richard M. Nixon and Soviet leader Nikita Khrushchev engage in a “kitchen debate” ... Vice President Richard M. Nixon and Soviet leader Nikita Khrushchev engage in a “kitchen debate” ...
Richard Serra, Tilted Arc. Richard Serra, Tilted Arc.
Cell surface recognition factors Cell surface recognition factors
How much the temperature will rise depends on many factors that affect the level of GHG emission How much the temperature will rise depends on many factors that affect the level of GHG emission
Primary factors affecting blood pressure Primary factors affecting blood pressure
Video: Chemical Synapse Animation

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