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Did you know?

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).

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

Did you know?

In 1844, Charles Goodyear obtained the first patent for a rubber condom.

Did you know?

More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.

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Video: Introduction to Sickle Cell Anemia

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