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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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The horizontal fraction bar was introduced by the Arabs.

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Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.

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A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

Large size can provide a refuge from predators. While young African elephants may be vulnerable to p Large size can provide a refuge from predators. While young African elephants may be vulnerable to p
Size comparison of Earth and Mars. Size comparison of Earth and Mars.
Ancient Warming Shrunk Horses to Housecat Size Ancient Warming Shrunk Horses to Housecat Size
Options for Legal Structures Cont Options for Legal Structures Cont
Size-exclusion chromatography (aka gel-filtration) Size-exclusion chromatography (aka gel-filtration)
How to choose the right payment plan with changing conditions (Question 3) How to choose the right payment plan with changing conditions (Question 3)
Video: Pasteur's Experiment

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