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Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

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Asthma cases in Americans are about 75% higher today than they were in 1980.

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As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

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About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

Two important changes occur in the upper airway in croup:The epiglottis swells, thereby occluding th Two important changes occur in the upper airway in croup:The epiglottis swells, thereby occluding th
Renal calculi (stones) can form in several areas within the urinary tract. When they form in the kid Renal calculi (stones) can form in several areas within the urinary tract. When they form in the kid
Surface magnetic field of SU Aur (a young star of T Tauri type), reconstructed by means of Zeeman-Do Surface magnetic field of SU Aur (a young star of T Tauri type), reconstructed by means of Zeeman-Do
Rates of Childhood Overweight and Obesity Worldwide The highest rates occur in the most affluent re Rates of Childhood Overweight and Obesity Worldwide The highest rates occur in the most affluent re
Changes that occur during the processing of tyrosine pre-tRNA Changes that occur during the processing of tyrosine pre-tRNA
Pus-forming infection. Such infections occur more frequently in individuals with immunoglobulin ... Pus-forming infection. Such infections occur more frequently in individuals with immunoglobulin ...
Video: Dissociative Disorders (Part 2)

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