The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
Did you know?
Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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The average adult has about 21 square feet of skin.
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Excessive alcohol use costs the country approximately $235 billion every year.
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Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.
Otitis media. This illustration shows an inflamed tympanic cavity, which is the most common source o
Common Cinquefoil
pH values of common solutions
Performing a Gram Stain
Common Oral Lesions/Conditions Associated with HIV Infections and Treatment Guidelines
Common Oral Lesions/Conditions Associated with HIV Infections and Treatment Guidelines