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Did you know?
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.