« previous next »
« previous next »
 

Did you know?

Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.

Did you know?

Human kidneys will clean about 1 million gallons of blood in an average lifetime.

Did you know?

The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

Did you know?

Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.

Did you know?

In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).

Examples of four different types of cells from the body. Although each cell has a cell membrane, nuc Examples of four different types of cells from the body. Although each cell has a cell membrane, nuc
Cell Cell
Nerve Cell Nerve Cell
Cross Section of Skin and Free Nerve Endings Cross Section of Skin and Free Nerve Endings
Flow data for a healthy donor (top panel) and a HIV positive patient. CD3 is a T-cell marker, CD4 is ... Flow data for a healthy donor (top panel) and a HIV positive patient. CD3 is a T-cell marker, CD4 is ...
Energy flows from the environment into living organisms, then back to the environment Energy flows from the environment into living organisms, then back to the environment
Video: New DNA Strand Replication

For a complete list of videos, visit our video library