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Did you know?

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

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Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

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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.

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Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.

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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.

Strawberry hemangioma, a birthmark caused by a collection of blood vessels in the skin. Strawberry hemangioma, a birthmark caused by a collection of blood vessels in the skin.
Amazing NASA Pictures Collection Amazing NASA Pictures Collection
Amazing NASA Pictures Collection Amazing NASA Pictures Collection
Good computer skills are now required to be a successful member of an office staff. Good computer skills are now required to be a successful member of an office staff.
A single cell wide-band oxygen sensor has four wires with two for the heater and two for the sensor ... A single cell wide-band oxygen sensor has four wires with two for the heater and two for the sensor ...
Video: Helper T cell receptors, activation, proliferation, differentiation & action

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