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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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Cyanide works by making the human body unable to use oxygen.
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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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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
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Thyroid conditions may make getting pregnant impossible.