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Time: 2024-03-28T14:05:12Z
URL: http://scholar.google.com/scholar_lookup?title=Involvement+of+exon+11-associated+variants+of+the+mu+opioid+receptor+MOR-1+in+heroin%2C+but+not+morphine%2C+actions&year=2009&author=Pan&journal=Proc+Natl+Acad+Sci+U+S+A&volume=106&issue=12&pages=4917-4922&doi=10.1073%2Fpnas.0811586106&pmid=19273844