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In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).
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In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.
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The familiar sounds of your heart are made by the heart's valves as they open and close.
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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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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.