title: Letter: The effects of ketamine on guineapig heart.
mesh_terms: D000818:Animals; D006168:Guinea Pigs; D006321:Heart / Q000187:drug effects*; D006339:Heart Rate / Q000187:drug effects; D007649:Ketamine / Q000494:pharmacology*; D009206:Myocardium / Q000032:analysis; D009638:Norepinephrine / Q000032:analysis
chemical_list: D007649:Ketamine; D009638:Norepinephrine