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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
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Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.
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People about to have surgery must tell their health care providers about all supplements they take.