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Did you know?
Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.
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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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Your heart beats over 36 million times a year.
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Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.
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The human body produces and destroys 15 million blood cells every second.