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About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.

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Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

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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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Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.

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The familiar sounds of your heart are made by the heart's valves as they open and close.

Examples of two nucleotides Examples of two nucleotides
Examples of gated ion channels. Examples of gated ion channels.
Examples of Declarative and Nondeclarative Memory Tasks Examples of Declarative and Nondeclarative Memory Tasks
Examples of the most common X-ray positions and the images they produce. Examples of the most common X-ray positions and the images they produce.
Mobilize the joints in the hand. Follow with figure-8s at the knuckles and scissoring the ... Mobilize the joints in the hand. Follow with figure-8s at the knuckles and scissoring the ...
Flexion and extension of the shoulders Flexion and extension of the shoulders
Video: Transferring genes into plants Animation

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