title: Effects of marihuana extract on the operant behavior of chimpanzees.
mesh_terms: D000818:Animals; D001522:Behavior, Animal / Q000187:drug effects*; D002188:Cannabis / Q000494:pharmacology*; D013759:Dronabinol / Q000494:pharmacology; D005108:Extinction, Psychological; D005260:Female; D008297:Male; D002679:Pan troglodytes; D010936:Plant Extracts; D012055:Reinforcement Schedule; D012054:Reinforcement, Psychology / Q000187:drug effects*
chemical_list: D010936:Plant Extracts; D013759:Dronabinol