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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
Asthma cases in Americans are about 75% higher today than they were in 1980.
There are more nerve cells in one human brain than there are stars in the Milky Way.
The Food and Drug Administration has approved Risperdal, an adult antipsychotic drug, for the symptomatic treatment of irritability in children and adolescents with autism. The approval is the first for the use of a drug to treat behaviors associated with autism in children. These behaviors are included under the general heading of irritability and include aggression, deliberate self-injury, and temper tantrums.
Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.