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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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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.
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The longest a person has survived after a heart transplant is 24 years.
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The familiar sounds of your heart are made by the heart's valves as they open and close.