title: An investigation of brain reinforcement systems involved in the concurrent self-administration of food, water, and morphine.
mesh_terms: D000818:Animals; D001070:Appetitive Behavior / Q000187:drug effects*; D004305:Dose-Response Relationship, Drug; D004326:Drinking / Q000187:drug effects; D004435:Eating / Q000187:drug effects; D007608:Kainic Acid / Q000633:toxicity; D008297:Male; D009020:Morphine / Q000008:administration & dosage*; D009042:Motivation / Q000187:drug effects*; D009474:Neurons / Q000187:drug effects; D009714:Nucleus Accumbens / Q000187:drug effects*; D051381:Rats; D011916:Rats, Inbred F344; D012054:Reinforcement, Psychology; D012646:Self Administration; D012686:Septal Nuclei / Q000187:drug effects*
chemical_list: D009020:Morphine; D007608:Kainic Acid