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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.

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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

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In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.

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The human body produces and destroys 15 million blood cells every second.

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The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

A subdural hematoma. A meningeal vein is ruptured and blood has accumulated in the subdural space, p A subdural hematoma. A meningeal vein is ruptured and blood has accumulated in the subdural space, p
Right Brain vs. Left Brain Right Brain vs. Left Brain
Brain (Gif) Brain (Gif)
Structural MRI can be used to provide three-dimensional images of the entire brain. (Courtesy of ... Structural MRI can be used to provide three-dimensional images of the entire brain. (Courtesy of ...
The cerebral hemispheres and cerebral commissures. The cerebral hemispheres and cerebral commissures.
Phrenology model showing areas of the head overlaying brain regions that control different traits. I Phrenology model showing areas of the head overlaying brain regions that control different traits. I
Video: Major Elements in Biological Molecules: Carbohydrates

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