Loss of morphine-induced analgesia, reward effect and withdrawal symptoms in mice lacking the µ-opioid-receptor gene

Authors: Hans W. D. Matthes, Rafaël Maldonado, Frédéric Simonin, Olga Valverde, Susan Slowe, Ian Kitchen, Katia Befort, Andrée Dierich, Marianne Le Meur, Pascal Dollé, Eleni T. Tzavara, Jacques Hanoune, Bernárd P. Roques, Brigitte L. Kieffer - Nature 1996 cited by 1,728