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Did you know?
There are more bacteria in your mouth than there are people in the world.
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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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If all the neurons in the human body were lined up, they would stretch more than 600 miles.
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The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.
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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.