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Did you know?

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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There are more bacteria in your mouth than there are people in the world.

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The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.

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Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.

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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

Surgical instruments prepared for a procedure. Surgical instruments prepared for a procedure.
A Subject Prepared for a Night’s Sleep in a Sleep Laboratory A Subject Prepared for a Night’s Sleep in a Sleep Laboratory
A Patient Being Prepared for Electroconvulsive Therapy. A Patient Being Prepared for Electroconvulsive Therapy.
In a project on job discrimination, Pager prepared identical résumés for the teams, but with one ... In a project on job discrimination, Pager prepared identical résumés for the teams, but with one ...
a solution is prepared in which a trace or small amount of Fe2+ is added to a much larger ... a solution is prepared in which a trace or small amount of Fe2+ is added to a much larger ...
Four common staining procedures used in chromosomal analysis. Most karyotypes are prepared using G-b Four common staining procedures used in chromosomal analysis. Most karyotypes are prepared using G-b
Video: Ciliate conjugation Animation

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