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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.
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.
More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.