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There are more sensory neurons in the tongue than in any other part of the body.
The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."
About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.
In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.
The human body produces and destroys 15 million blood cells every second.
![Erythroblastosis fetalis. (a) The condition occurs with an RH+ father and RH– mother. (b) First preg](https://biology-forums.com/gallery/47/medium_14755_16_10_12_12_29_18_9451500.jpeg)
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