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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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Asthma cases in Americans are about 75% higher today than they were in 1980.
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Medication errors are more common among seriously ill patients than with those with minor conditions.
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Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.
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If all the neurons in the human body were lined up, they would stretch more than 600 miles.