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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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Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.

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Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.

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Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

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The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.

The chemistry of polypeptide formation The chemistry of polypeptide formation
Steps in sequencing a polypeptide Steps in sequencing a polypeptide
Cross-fiber friction to the paraspinal muscles. Friction is created by moving the more superficial ... Cross-fiber friction to the paraspinal muscles. Friction is created by moving the more superficial ...
Relationships of DNA to mRNA to polypeptide chain Relationships of DNA to mRNA to polypeptide chain
Predicted polypeptide sequences translated from potential ORFs in the human TUBA3C gene Predicted polypeptide sequences translated from potential ORFs in the human TUBA3C gene
Structure of polypeptide chains Structure of polypeptide chains
Video: Endocytosis - pinocytosis, receptor mediated and Transcytosis

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