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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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Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.

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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

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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.

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During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

The nitrogen cycle. Numbers represent fluxes as 1012 g N per year (data from Schlesinger 1991, after The nitrogen cycle. Numbers represent fluxes as 1012 g N per year (data from Schlesinger 1991, after
Educational Achievement in the United States Educational Achievement in the United States
CT imaging of glioblastoma in a 6-year-old girl. CT imaging of glioblastoma in a 6-year-old girl.
Continental United States Hurricane Strikes from 1950-2011 Continental United States Hurricane Strikes from 1950-2011
Two lymphocytes that are reactive in a 19-year-old college student with infectious mononucleosis. ... Two lymphocytes that are reactive in a 19-year-old college student with infectious mononucleosis. ...
Professional association conventions provide opportunities for networking with other massage ... Professional association conventions provide opportunities for networking with other massage ...
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