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Did you know?

To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.

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There are more sensory neurons in the tongue than in any other part of the body.

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The longest a person has survived after a heart transplant is 24 years.

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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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Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.

Structure of a nucleosome Structure of a nucleosome
The structure and function of the human testis. The structure and function of the human testis.
Immunoglobulin Structure Immunoglobulin Structure
The secondary structure of amylose The secondary structure of amylose
Orientation and structure of a nephron, the functional unit of the kidney. Orientation and structure of a nephron, the functional unit of the kidney.
Nucleosome structure Nucleosome structure
Video: Cytotoxic T cell receptors, activation, proliferation, differentiation & action

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