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Did you know?

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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The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.

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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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More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

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Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

Food-conducting cells of the phloem. Food-conducting cells of the phloem.
The cells in blood; A, red blood cells (erythrocytes); B, platelets (thrombocytes); C, white blood c The cells in blood; A, red blood cells (erythrocytes); B, platelets (thrombocytes); C, white blood c
Human embryonic stem cells forming rosettes, a sign of neural differentiation Human embryonic stem cells forming rosettes, a sign of neural differentiation
The dystrophin glycoprotein complex (DGC) in skeletal muscle cells The dystrophin glycoprotein complex (DGC) in skeletal muscle cells
X-ray showing pneumonia. Fluid and blood cells fill the lungs X-ray showing pneumonia. Fluid and blood cells fill the lungs
Types of cells involved in the inflammatory response Types of cells involved in the inflammatory response
Video: Major Elements in Biological Molecules: Proteins

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