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Did you know?

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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Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

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Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

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There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.

The steps of an enzyme-catalyzed reaction The steps of an enzyme-catalyzed reaction
New results from NASA's NEOWISE survey New results from NASA's NEOWISE survey
Many diesel fuel additives increase the cetane rating which results in improved fuel economy. Many diesel fuel additives increase the cetane rating which results in improved fuel economy.
The experimental design and results of Lester and Gorzalka (1988). On the third test, the female ... The experimental design and results of Lester and Gorzalka (1988). On the third test, the female ...
Allergic contact dermatitis. Allergic contact dermatitis.
Immunologic and inflammatory mechanisms of the Arthus reaction. Immunologic and inflammatory mechanisms of the Arthus reaction.
Video: Gastrulation: cross section of the frog

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