Mean (± SEM) intake of 15% (v/v) ethanol (g ethanol/kg body weight) by Wistar rats in the VAPOR ABST (closed circles), CHOICE ABST (open circles), and VAPOR CONT (closed triangles) groups during the 4 hours (A) and 24 hours (B) following infusion of four NPY doses (0.0, 2.5, 5.0, 10.0 µg). Across VAPOR ABST and CHOICE ABST rats, there was a significant decrease in 4-hr ethanol intake (g/kg) following infusion of 10.0 µg NPY relative to aCSF controls. Across NPY doses, VAPOR CONT rats drank more ethanol (g/kg) than VAPOR ABST rats at 4 and 24 hrs.