« previous next »
« previous next »
 

Did you know?

A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

Did you know?

Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

Did you know?

Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%

Did you know?

There are 60,000 miles of blood vessels in every adult human.

Did you know?

Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.

Gangrene of the toes and foot as a result of an infection often means eventual amputation. Gangrene of the toes and foot as a result of an infection often means eventual amputation.
Localization of a Peptide The peptide is revealed by means of immunocytochemistry. The photomicrogra Localization of a Peptide The peptide is revealed by means of immunocytochemistry. The photomicrogra
Fear Conditioning and the Brain (1 of 2) Fear Conditioning and the Brain (1 of 2)
Fear Conditioning and the Brain (2 of 2) Fear Conditioning and the Brain (2 of 2)
Temperature Means and Ranges Temperature Means and Ranges
The enthalpy change for converting 10.0 g of ice at -25.0 C to water at 80.0 C is ________ kJ. ... The enthalpy change for converting 10.0 g of ice at -25.0 C to water at 80.0 C is ________ kJ. ...
Video: Sister chromatids of a metaphase chromosome animation

For a complete list of videos, visit our video library