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Did you know?
The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.
Did you know?
All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.
Did you know?
The horizontal fraction bar was introduced by the Arabs.
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On average, the stomach produces 2 L of hydrochloric acid per day.
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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.