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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).
Medication errors are more common among seriously ill patients than with those with minor conditions.
Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
Excessive alcohol use costs the country approximately $235 billion every year.
Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.