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Did you know?

Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

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A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

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A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

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As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

Did you know?

Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

Developmental steps in the maturation of Tasmanian devil young. The diagonal lines indicate the amou Developmental steps in the maturation of Tasmanian devil young. The diagonal lines indicate the amou
The constellation of Leo as it can be seen by the naked eye. Lines have been added. The constellation of Leo as it can be seen by the naked eye. Lines have been added.
Wild chimpanzees make and use simple tools to obtain food, learning tool making from one another. Wild chimpanzees make and use simple tools to obtain food, learning tool making from one another.
Headsets are ergonomically correct and allow the medical assistant or receptionist to use both hands Headsets are ergonomically correct and allow the medical assistant or receptionist to use both hands
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 ...
A 2.8-kg tool can move on a perfectly smooth ramp that slants at 42° above the horizontal. ... A 2.8-kg tool can move on a perfectly smooth ramp that slants at 42° above the horizontal. ...
Video: Introduction to Human Immunodeficiency Virus (HIV)

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