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Vaccines prevent between 2.5 and 4 million deaths every year.
There are more sensory neurons in the tongue than in any other part of the body.
Your heart beats over 36 million times a year.
Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.
Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.
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