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Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.

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Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

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Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

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Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.

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Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.

Examples of structures in which extensive surface area is important for function. Examples of structures in which extensive surface area is important for function.
If you get a chance, look through popular read-aloud books for young children, such as The Very ... If you get a chance, look through popular read-aloud books for young children, such as The Very ...
A fuel composition tester (SPX Kent-Moore J-44175) is the recommended tool, by General Motors, to ... A fuel composition tester (SPX Kent-Moore J-44175) is the recommended tool, by General Motors, to ...
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Healthy Eating Behaviors and Weight Gain Are Important Considerations during the Third Trimester Healthy Eating Behaviors and Weight Gain Are Important Considerations during the Third Trimester
A group of children were asked how many hours a day they spend watching television. A group of children were asked how many hours a day they spend watching television.
Video: Ionic bonds - role of ions in the body

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