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Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

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Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

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The largest baby ever born weighed more than 23 pounds but died just 11 hours after his birth in 1879. The largest surviving baby was born in October 2009 in Sumatra, Indonesia, and weighed an astounding 19.2 pounds at birth.

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The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

The form and orientation of desert plants reduces heat gain from the environment and facilitates coo The form and orientation of desert plants reduces heat gain from the environment and facilitates coo
Internal and External Environment Internal and External Environment
Structures formed by phospholipids in an aqueous environment. Structures formed by phospholipids in an aqueous environment.
From your experiences in grade school, can you tell if or how your teachers unintentionally helped ... From your experiences in grade school, can you tell if or how your teachers unintentionally helped ...
Jamal plans to retire in 17 years. He is saving $2000 every start of the month in a retirement ... Jamal plans to retire in 17 years. He is saving $2000 every start of the month in a retirement ...
Video: Generalized life cycles for plants and animals Animation

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