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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.
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Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.
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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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Human kidneys will clean about 1 million gallons of blood in an average lifetime.