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When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).
The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.
Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.