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Medication errors are more common among seriously ill patients than with those with minor conditions.

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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.

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According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

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There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).

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