Pre-exposure to the cannabinoid receptor agonist CP 55,940 enhances morphine behavioral sensitization and alters morphine self-administration in Lewis rats

Author: Norwood C.S.   Cornish J.L.   Mallet P.E.   McGregor I.S.  

Publisher: Elsevier

ISSN: 0014-2999

Source: European Journal of Pharmacology, Vol.465, Iss.1, 2003-03, pp. : 105-114

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Abstract