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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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The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.

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It is difficult to obtain enough calcium without consuming milk or other dairy foods.

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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

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Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

A commercial eyewash station. In a medical office, the eyewash station is likely to be attached to a A commercial eyewash station. In a medical office, the eyewash station is likely to be attached to a
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Video: Nerve Impulse Transmission Animation

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