Acute tolerance to the effects of delta-9-tetrahydrocannabinol on spaced responding by monkeys.
D000818:Animals; D001522:Behavior, Animal / Q000187:drug effects; D002188:Cannabis / Q000494:pharmacology*; D003213:Conditioning, Psychological / Q000187:drug effects*; D013759:Dronabinol / Q000494:pharmacology; D004361:Drug Tolerance; D000882:Haplorhini; D008251:Macaca; D008297:Male; D010919:Placebos; D012055:Reinforcement Schedule; D013997:Time Factors
D010919:Placebos; D013759:Dronabinol