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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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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.

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Blood is approximately twice as thick as water because of the cells and other components found in it.

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The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

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Excessive alcohol use costs the country approximately $235 billion every year.

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