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Did you know?
Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.
Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
If you could remove all of your skin, it would weigh up to 5 pounds.
Did you know?
Medication errors are three times higher among children and infants than with adults.
Did you know?
Blood is approximately twice as thick as water because of the cells and other components found in it.

