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A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
If all the neurons in the human body were lined up, they would stretch more than 600 miles.
There are 60,000 miles of blood vessels in every adult human.
Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.
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).