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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).
The longest a person has survived after a heart transplant is 24 years.
Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.