When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
Did you know?
In 1864, the first barbiturate (barbituric acid) was synthesized.
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Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
Did you know?
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
