« previous next »
« previous next »
 

Did you know?

There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

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?

As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

Did you know?

The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

Did you know?

Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

Cellular movements caused by the actions of flagella and cilia Cellular movements caused by the actions of flagella and cilia
Process Flow Diagram of a Dual-Stage Pressure System Process Flow Diagram of a Dual-Stage Pressure System
Peak flow meter with marker for the zero position. Peak flow meter with marker for the zero position.
Necator americanus. The cutting plates around the mouth are used to tear open blood vessels of the ... Necator americanus. The cutting plates around the mouth are used to tear open blood vessels of the ...
Winds Aloft and Near the Surface: Gradient Flow Winds Aloft and Near the Surface: Gradient Flow
Simplified diagram of information flow (the central dogma) from DNA to RNA Simplified diagram of information flow (the central dogma) from DNA to RNA
Video: Role of transport in a cell

For a complete list of videos, visit our video library