Did you know?

Women are 50% to 75% more likely than men to experience an adverse drug reaction.

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The familiar sounds of your heart are made by the heart's valves as they open and close.

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If all the neurons in the human body were lined up, they would stretch more than 600 miles.

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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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Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

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