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Did you know?

The horizontal fraction bar was introduced by the Arabs.

Did you know?

To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.

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In 1864, the first barbiturate (barbituric acid) was synthesized.

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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

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Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

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