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IP address: 3.88.254.50
Time: 2024-03-28T14:30:54Z
URL: http://scholar.google.com/scholar_lookup?title=Opposing+tonically+active+endogenous+opioid+systems+modulate+the+mesolimbic+dopaminergic+pathway&year=1992&author=Spanagel&journal=Proc+Natl+Acad+Sci+USA&volume=89&issue=6&pages=2046-2050&doi=10.1073%2Fpnas.89.6.2046&pmid=1347943