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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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Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.

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It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

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Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

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The newest statin drug, rosuvastatin, has been called a superstatin because it appears to reduce LDL cholesterol to a greater degree than the other approved statin drugs.

Bottom-up control versus top-down control. Bottom-up control versus top-down control.
Chrysler Salon, N. Y. C., showing the 1937 Chrysler Airflow four-door sedan on display in the ... Chrysler Salon, N. Y. C., showing the 1937 Chrysler Airflow four-door sedan on display in the ...
Calligraphic scroll (detail), Syria or India. Calligraphic scroll (detail), Syria or India.
Typical engine analyzer hookup that includes a scope display. (1) Coil wire on top of the ... Typical engine analyzer hookup that includes a scope display. (1) Coil wire on top of the ...
A single cylinder is shown at the top and a four-cylinder engine at the bottom. A single cylinder is shown at the top and a four-cylinder engine at the bottom.
The post-catalytic converter oxygen sensor should display very little activity if the catalytic ... The post-catalytic converter oxygen sensor should display very little activity if the catalytic ...
Video: Hyperglycemia Animation

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