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Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.

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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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GI conditions that will keep you out of the U.S. armed services include ulcers, varices, fistulas, esophagitis, gastritis, congenital abnormalities, inflammatory bowel disease, enteritis, colitis, proctitis, duodenal diverticula, malabsorption syndromes, hepatitis, cirrhosis, cysts, abscesses, pancreatitis, polyps, certain hemorrhoids, splenomegaly, hernias, recent abdominal surgery, GI bypass or stomach stapling, and artificial GI openings.

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Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

Passive and active transport. Passive and active transport.
A Passive Continental Margin A Passive Continental Margin
Purse cover, from the Sutton Hoo burial ship. Purse cover, from the Sutton Hoo burial ship.
How difficult is it for children to learn to speak two languages? How difficult is it for children to learn to speak two languages?
The following sentence is written in the passive voice: The man rode his skateboard to work ... The following sentence is written in the passive voice: The man rode his skateboard to work ...
Embryonic development of shepherd’s purse (Capsella), a eudicot Embryonic development of shepherd’s purse (Capsella), a eudicot
Video: Neurosynapse Animation

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