« previous next »
« previous next »
 

Did you know?

In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

Did you know?

Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

Did you know?

The average office desk has 400 times more bacteria on it than a toilet.

Did you know?

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.

The factors that influence protein folding and stability. The factors that influence protein folding and stability.
Pupil assessment; B, moving penlight directly in front of pupil. Pupil assessment; B, moving penlight directly in front of pupil.
CS-US Relationships Predict Conditioning CS-US Relationships Predict Conditioning
Selective pressures from the environment influence adaptation Selective pressures from the environment influence adaptation
Cross-Cutting Relationships Cross-Cutting Relationships
Phylogenetic relationships among apes and monkeys Phylogenetic relationships among apes and monkeys
Video: Congenital Heart Defects Animation

For a complete list of videos, visit our video library