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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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Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.

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Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

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Thyroid conditions may make getting pregnant impossible.

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Famous people who died from poisoning or drug overdose include, Adolf Hitler, Socrates, Juan Ponce de Leon, Marilyn Monroe, Judy Garland, and John Belushi.

A subdural hematoma. A meningeal vein is ruptured and blood has accumulated in the subdural space, p A subdural hematoma. A meningeal vein is ruptured and blood has accumulated in the subdural space, p
Space-filling model of an actin filament (shades of red) with one myosin head (gray and two shades o Space-filling model of an actin filament (shades of red) with one myosin head (gray and two shades o
Create space between metatarsals by pulling sides of foot away from each other. Create space between metatarsals by pulling sides of foot away from each other.
A model of the ATP cycle in muscle contraction A model of the ATP cycle in muscle contraction
Crossing over in prophase I increases genetic variation Crossing over in prophase I increases genetic variation
The Thoracic Vertebrae: Right Lateral View of Vertebra The Thoracic Vertebrae: Right Lateral View of Vertebra
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