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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.
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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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The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.
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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.