« previous next »
« previous next »
 

Did you know?

Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

Did you know?

More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.

Did you know?

Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.

Did you know?

Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.

Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

A tapeworm, Taenia pisiformis, a member of the class Cestoda. A tapeworm, Taenia pisiformis, a member of the class Cestoda.
A miner greets the president. Franklin’s “first-class temperament” compensated for his ... A miner greets the president. Franklin’s “first-class temperament” compensated for his ...
Phyllis Schlafly drew much of her support from working-class women who were left vulnerable by the ... Phyllis Schlafly drew much of her support from working-class women who were left vulnerable by the ...
A patient examination room should be simple and efficiently designed. A patient examination room should be simple and efficiently designed.
Stressing that education reproduces a country’s social class system, conflict theorists point out ... Stressing that education reproduces a country’s social class system, conflict theorists point out ...
Who Goes to College? Comparing Social Class and Ability in Determining College Attendance Who Goes to College? Comparing Social Class and Ability in Determining College Attendance
Video: Vascular tissues in a corn stem and a buttercup root

For a complete list of videos, visit our video library