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There are more sensory neurons in the tongue than in any other part of the body.
On average, the stomach produces 2 L of hydrochloric acid per day.
The longest a person has survived after a heart transplant is 24 years.
Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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