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The Addiction Research Center (ARC) became part of the National Institute on Drug Abuse when it was created in 1973 and moved from Lexington to Baltimore, Maryland, in 1979. The ARC has become the largest facility in the United States devoted to studying addiction and drug abuse. Researchers at the ARC in Baltimore use new noninvasive imaging techniques, such as positron emission tomography (PET scanning), to produce images of the sites of action of drugs in the living human brain. The PET scan below, taken from a former opioid addict under the influence of morphine, shows decreased brain activity (lighter tones) as compared to activity in the same brain under the placebo (no drug) above.
c. 1980
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