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Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").

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As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

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Asthma cases in Americans are about 75% higher today than they were in 1980.

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Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.

A lumbar puncture. The needle is inserted between the lumbar vertebrae and into the spinal canal. A lumbar puncture. The needle is inserted between the lumbar vertebrae and into the spinal canal.
Cardiac catheterization. Insertion of a tube called a catheter through a blood vessel. In this examp Cardiac catheterization. Insertion of a tube called a catheter through a blood vessel. In this examp
Johannes Gutenberg, Page from the Forty-Two-Line Bible, Mainz. Johannes Gutenberg, Page from the Forty-Two-Line Bible, Mainz.
Children with autism generally prefer interacting with objects over people. Children with autism generally prefer interacting with objects over people.
Index card tickler file. Index card tickler file.
Spring for the Crane and Deer. Beginning position: Legs straight and together, arms at sides of ... Spring for the Crane and Deer. Beginning position: Legs straight and together, arms at sides of ...
Video: Brain Lobes Animation

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