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There are more sensory neurons in the tongue than in any other part of the body.
The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
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).