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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
Medication errors are three times higher among children and infants than with adults.
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 FDA recognizes 118 routes of administration.
Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.