« previous next »
« previous next »
 

Did you know?

Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Did you know?

Never take aspirin without food because it is likely to irritate your stomach. Never give aspirin to children under age 12. Overdoses of aspirin have the potential to cause deafness.

Did you know?

Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.

Did you know?

The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").

Female choice based on male appearance. Female choice based on male appearance.
An illustration of the structure of the Sun: An illustration of the structure of the Sun:
Spot the hidden object Spot the hidden object
Structure of a complex of a type II DNA methylase with DNA Structure of a complex of a type II DNA methylase with DNA
Structure of the Eye (near-sighted vs far-sighted) Structure of the Eye (near-sighted vs far-sighted)
Structure of a flight feather Structure of a flight feather
Video: Attention Deficit Disorder (ADD)

For a complete list of videos, visit our video library