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Did you know?
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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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.
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The average adult has about 21 square feet of skin.
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There are approximately 3 million unintended pregnancies in the United States each year.