All mice underwent habituation to injections, i.e. during the first three days, the mice were injected with 0.3 ml saline (Hospira, Inc., Lake Forest, IL) and water bottles were replaced 30 min later. On days 4 to 6, the mice were injected with saline and 30 min later, they were allowed access to water and 15 % ethanol (v/v, made in tap water). To control for preference to the location of the fluids, in half of the animals, the ethanol tube was placed on the right and in the other half, on the left. The volumes of the fluids were recorded after 2 h and the ethanol tube was then replaced with a water tube. On day 7, animals were divided into groups matched for alcohol intakes and injected with either 0.3 ml saline or 400 nmol of D-Lys3-GHRP-6 (vehicle: saline; Tocris Bioscience, Ellisville, MO) and 30 min later were allowed access to water and 15 % ethanol for 4 h. Volumes of the fluids consumed were recorded and the mice euthanized by an overdose of CO2. All injections were
