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Did you know?

Excessive alcohol use costs the country approximately $235 billion every year.

Did you know?

Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

Did you know?

The average adult has about 21 square feet of skin.

Did you know?

According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

Did you know?

The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

St. John's Water Dog (Extinct) St. John's Water Dog (Extinct)
This engraving by William Russell Birch shows Congress Hall (left), which was occupied by Congress f This engraving by William Russell Birch shows Congress Hall (left), which was occupied by Congress f
John Lewis Krimmel’s painting of the Fourth of July in Centre Square Philadelphia (1812) shows the d John Lewis Krimmel’s painting of the Fourth of July in Centre Square Philadelphia (1812) shows the d
The Ku Klux Klan forces John Campbell, a black man, to beg for his life in Moore County, North Carol The Ku Klux Klan forces John Campbell, a black man, to beg for his life in Moore County, North Carol
JFK and Jacqueline Kennedy ride in a motorcade with Texas Governor John Connolly and his wife in ... JFK and Jacqueline Kennedy ride in a motorcade with Texas Governor John Connolly and his wife in ...
John Muir (right) with President Roosevelt at Yosemite National Park John Muir (right) with President Roosevelt at Yosemite National Park
Video: Cellular defenses (natural killer cells, phagocyte types & process of phagocytosis)

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