« previous next »
« previous next »
 

Did you know?

HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.

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?

Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

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.

RNA Virus Life Cycle RNA Virus Life Cycle
Types of pathogenic organisms: (a) bacterium, (b) virus, (c) protozoan pathogens, (d) multicellular ... Types of pathogenic organisms: (a) bacterium, (b) virus, (c) protozoan pathogens, (d) multicellular ...
Aedes mosquito, the vector for West Nile virus encephalitis. Aedes mosquito, the vector for West Nile virus encephalitis.
Herpes simplex virus sore on the lip Herpes simplex virus sore on the lip
An example of a cell-mediated immune response targeting virus-infected cells. An example of a cell-mediated immune response targeting virus-infected cells.
Infected Tobacco Leaves by a Virus Infected Tobacco Leaves by a Virus
Video: Bulk flow - factors that influence bulk flow

For a complete list of videos, visit our video library