17 hours ago
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ARTICLE AD BOX
For many years, scientists believed they had a clear picture of what causes asthma. The condition has been linked to inflammation in the lungs that narrows the airways and makes breathing difficult.
That inflammation was widely attributed to molecules known as "leukotrienes." These chemicals are released by white blood cells when the airways are irritated or exposed to allergens. Because leukotrienes trigger a chain reaction that tightens the airways, drugs we...
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