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Did you know?
It is difficult to obtain enough calcium without consuming milk or other dairy foods.
Did you know?
When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
Did you know?
The longest a person has survived after a heart transplant is 24 years.
Did you know?
Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.
Did you know?
The average office desk has 400 times more bacteria on it than a toilet.

