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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.

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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

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By definition, when a medication is administered intravenously, its bioavailability is 100%.

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The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

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