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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
Cyanide works by making the human body unable to use oxygen.
The human body produces and destroys 15 million blood cells every second.
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