« previous next »
« previous next »
 

Did you know?

Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Did you know?

Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

Did you know?

Computer programs are available that crosscheck a new drug's possible trade name with all other trade names currently available. These programs detect dangerous similarities between names and alert the manufacturer of the drug.

Did you know?

Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.

Hydrogen sulfide as an energy source for chemoautotrophic bacteria in the deep sea. Hydrogen sulfide as an energy source for chemoautotrophic bacteria in the deep sea.
Schematic diagram showing polyclonal response by B cells against linear epitopes. Schematic diagram showing polyclonal response by B cells against linear epitopes.
Renewable Energy Efforts Renewable Energy Efforts
Comparison of energy consumption in developing and industrialized nations Comparison of energy consumption in developing and industrialized nations
Pituitary Hormones and Their Target Cells, Tissues, and Organs Pituitary Hormones and Their Target Cells, Tissues, and Organs
Growth of cultured cells from patients with xeroderma pigmentosum (XP) Growth of cultured cells from patients with xeroderma pigmentosum (XP)
Video: Introduction to Sleep Apnea

For a complete list of videos, visit our video library