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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.
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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
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The average office desk has 400 times more bacteria on it than a toilet.
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Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.
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Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.