Fig. 3.

Experiment 2: Effect of Prazosin alone, Naltrexone alone, or Prazosin + Naltrexone on (a) ethanol intake (g/kg), n=10 and (b) sucrose intake (g/kg), n=10. * = Significantly different from Vehicle; $ = Significantly different from Naltrexone alone; # = Combination significantly different from corresponding Prazosin alone dose. Note: Significant differences between Vehicle and all combination treatments (Fig 3a), and significant differences between Vehicle and 0.25 mg/kg Prazosin + 0.03 Naltrexone, 0.5 mg/kg Prazosin + 0.03 Naltrexone, and 1.0 mg/kg Prazosin + 0.03 mg/kg Naltrexone (Fig 3b). White bar indicates Vehicle, Gray bar indicates Propranolol alone, striped bars indicate Prazosin alone doses, and black bars indicate Combination Treatments