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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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Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.

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Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.

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Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.

Maintenance of normal blood glucose levels. Maintenance of normal blood glucose levels.
Trophic levels Trophic levels
The age-dependent curve of salivary progresterone levels in three populations. The age-dependent curve of salivary progresterone levels in three populations.
Humoral control of blood sugar levels. Humoral control of blood sugar levels.
Regulation of translation in erythropoietic cells by heme levels Regulation of translation in erythropoietic cells by heme levels
Differences in yield between two wheat varieties at different soil fertility levels Differences in yield between two wheat varieties at different soil fertility levels
Video: Elementary kinetics

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