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Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
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There are more nerve cells in one human brain than there are stars in the Milky Way.
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Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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