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Did you know?

The human body produces and destroys 15 million blood cells every second.

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The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

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Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).

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The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

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Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

Structure of the ovary and uterine (fallopian) tube. Figure illustrates stages of ovum development a Structure of the ovary and uterine (fallopian) tube. Figure illustrates stages of ovum development a
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Video: Graded potentials - electrical characteristics and types

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