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Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.

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An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

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Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.

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In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.

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The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Male reproductive structures in humans. Male reproductive structures in humans.
Michelangelo, The Last Judgment, on altar wall of Sistine Chapel. Michelangelo, The Last Judgment, on altar wall of Sistine Chapel.
The neural pathway responsible for the production and learning of song in the male canary. The neural pathway responsible for the production and learning of song in the male canary.
The molecular structures of isooctane (left) and octane (right) dictate the differing chemical and ... The molecular structures of isooctane (left) and octane (right) dictate the differing chemical and ...
Structures of the major types of asparagine-linked (N-linked) oligosaccharides Structures of the major types of asparagine-linked (N-linked) oligosaccharides
Part of a Semantic Network in Long-Term Memory Part of a Semantic Network in Long-Term Memory
Video: Five phases of cardiac cycle & Atrial contraction

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