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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.
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The average office desk has 400 times more bacteria on it than a toilet.
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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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Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.
Pus-forming infection. Such infections occur more frequently in individuals with immunoglobulin ...
Use tap water when making coffee, tea, or juice from concentrate, and for food preparation
A company that sells sweatshirts finds that the profit can be modelled by P(s)= ...
Handcrafted wooden coffee table
Jia's Fashions recently paid a $2 annual dividend. The company is projecting that its ...