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Did you know?
The human body produces and destroys 15 million blood cells every second.
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There are 60,000 miles of blood vessels in every adult human.
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Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.
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Blood is approximately twice as thick as water because of the cells and other components found in it.
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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.