« previous next »
« previous next »
 

Did you know?

In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

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?

Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

Did you know?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

Closed urinary drainage system. Urine being measured after it leaves patient’s body via catheter. Closed urinary drainage system. Urine being measured after it leaves patient’s body via catheter.
Bilateral psoriasis on a patient’s knees. Bilateral psoriasis on a patient’s knees.
Diverticula Diverticula are small pouches that can occur along your colon Diverticula Diverticula are small pouches that can occur along your colon
Therapy to Prevent PTSD after Disaster Therapy to Prevent PTSD after Disaster
Incorporated errors and mutations Incorporated errors and mutations
Video: Ciliate conjugation Animation

For a complete list of videos, visit our video library