Vaccines prevent between 2.5 and 4 million deaths every year.
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Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.
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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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According to animal studies, the typical American diet is damaging to the liver and may result in allergies, low energy, digestive problems, and a lack of ability to detoxify harmful substances.
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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
Various types of integumentary conditions. (C) Acne.