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Did you know?
The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.
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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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The longest a person has survived after a heart transplant is 24 years.
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There are more nerve cells in one human brain than there are stars in the Milky Way.