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The longest a person has survived after a heart transplant is 24 years.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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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.
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The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.