If all the neurons in the human body were lined up, they would stretch more than 600 miles.
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Cyanide works by making the human body unable to use oxygen.
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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
Structure and function of phage T4
Endocarditis. The human heart has been sectioned to reveal the left ventricle and origin of the aort
The basic structure of a spermatozoon (SPERM).
This frame from a home video shows Eric Harris (on the left) and Dylan Klebold (on the right) as ...