In the article “Maternal Deprivation Increases Vulnerability to Morphine Dependence and Disturbs the Enkephalinergic System in Adulthood,” by Vincent Vazquez, Jacqueline Penit-Soria, Claudette Durand, Marie Jo Besson, Bruno Giros, and Valérie Daugé, which appeared on pages 4453-4462 of the May 4, 2005 issue, the second author affiliation is incorrect as shown. The correct list of institutions for the second affiliation is given below.
2Laboratoire de Neurobiologie des Processus Adaptatifs, Institut des Neurosciences, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7102, Université Pierre et Marie Curie, 75005 Paris, France
