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As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

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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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By definition, when a medication is administered intravenously, its bioavailability is 100%.

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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

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