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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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Thyroid conditions may make getting pregnant impossible.
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There are more sensory neurons in the tongue than in any other part of the body.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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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%.