« previous next »
« previous next »
 

Did you know?

The human body produces and destroys 15 million blood cells every second.

Did you know?

In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.

Did you know?

Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

Did you know?

About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

Did you know?

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.

Comparison of the steps of two viral reproductive cycles. Comparison of the steps of two viral reproductive cycles.
Viral outbreak Viral outbreak
Viral structure Viral structure
Varicella or chickenpox, a viral skin infection. In this photograph, the rash is beginning to form s Varicella or chickenpox, a viral skin infection. In this photograph, the rash is beginning to form s
L. Frank Baum, author of The Wonderful Wizard of Oz (1900) and a fan of William Jennings Bryan, perh L. Frank Baum, author of The Wonderful Wizard of Oz (1900) and a fan of William Jennings Bryan, perh
Summary of Viral Hepatitis Types Summary of Viral Hepatitis Types
Video: Neuron structure and function - sensory neurons, association neurons & motor neurons

For a complete list of videos, visit our video library