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There are more sensory neurons in the tongue than in any other part of the body.
More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
The longest a person has survived after a heart transplant is 24 years.
Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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