title: Effects of morphine on one-trial appetitive learning.
mesh_terms: D000818:Animals; D004327:Drinking Behavior / Q000187:drug effects; D007858:Learning / Q000187:drug effects*; D008297:Male; D009020:Morphine / Q000494:pharmacology*; D051381:Rats; D012054:Reinforcement, Psychology; D012153:Retention, Psychology / Q000187:drug effects; D014868:Water Deprivation
chemical_list: D009020:Morphine