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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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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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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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There are 20 feet of blood vessels in each square inch of human skin.
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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.