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Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.
Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).
Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.
![Use a vacuum or fuel line hose over the spark plug to install it without danger of cross-threading ...](https://biology-forums.com/gallery/29/medium_548020_30_05_17_4_15_49_29678918.png)
![Reconnect all vacuum and air hoses and tubes. Replace any vacuum hoses that are brittle or swollen ...](https://biology-forums.com/gallery/29/medium_548020_30_05_17_4_42_37_29758653.png)