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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 heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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The average office desk has 400 times more bacteria on it than a toilet.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.