The Interference of Ethanol with Heroin-Stimulated Psychomotor Activation in Mice is not Related to Changed Brain Concentrations of the Active Metabolites 6 MAM or Morphine. - Andersen, Jannike M.; Haugen, Karianne S.; Ripel, Åse; Mørland, Jørg (Basic & Clinical Pharmacology & Toxicology, 2014)