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Did you know?
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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The familiar sounds of your heart are made by the heart's valves as they open and close.
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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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Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.
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Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.