The effects of caffeine and theophylline on nociceptive stimulation in the rat.
D000818:Animals; D002110:Caffeine / Q000008:administration & dosage / Q000494:pharmacology*; D002490:Central Nervous System / Q000187:drug effects*; D004305:Dose-Response Relationship, Drug; D004558:Electric Stimulation; D007274:Injections, Intraperitoneal; D008297:Male; D009043:Motor Activity / Q000187:drug effects*; D009431:Neural Conduction / Q000187:drug effects; D010146:Pain; D010919:Placebos; D051381:Rats; D013268:Stimulation, Chemical; D013806:Theophylline / Q000008:administration & dosage / Q000494:pharmacology*; D013997:Time Factors; D014828:Vocalization, Animal / Q000187:drug effects*
D010919:Placebos; D002110:Caffeine; D013806:Theophylline