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Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.
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Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.
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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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Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.