title: Effect of pre- and post-trial tyramine and guanethidine injections on an appetitive task in rats.
mesh_terms: D000818:Animals; D001522:Behavior, Animal / Q000187:drug effects / Q000502:physiology; D003216:Conditioning, Operant / Q000187:drug effects*; D006145:Guanethidine / Q000008:administration & dosage / Q000494:pharmacology*; D007274:Injections, Intraperitoneal; D051381:Rats; D013564:Sympathetic Nervous System / Q000187:drug effects; D013997:Time Factors; D014439:Tyramine / Q000008:administration & dosage / Q000494:pharmacology*
chemical_list: D014439:Tyramine; D006145:Guanethidine