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Did you know?
Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.
Did you know?
Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.
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The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.
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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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There are 20 feet of blood vessels in each square inch of human skin.