Journal Article
Frölich, N.; Dees, C.; Paetz, C.; Ren, X.; Lohse, M. J.; Nikolaev, V. O.; Zenk, M. H.: Distinct pharmacological properties of morphine metabolites at Gi-protein and b-arrestin signaling pathways activated by the human m-opioid receptor. Biochemical Pharmacology
81 (10), pp. 1248 - 1254 (2011)