Did you know?

Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

Did you know?

The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

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Medication errors are three times higher among children and infants than with adults.

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?

About 100 new prescription or over-the-counter drugs come into the U.S. market every year.

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