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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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Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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If all the neurons in the human body were lined up, they would stretch more than 600 miles.
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More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.