title: The photoelectric plethysmography technique for recording heart rate in chick embryos.
mesh_terms: D000818:Animals; D002642:Chick Embryo / Q000502:physiology*; D004837:Epinephrine / Q000494:pharmacology; D006339:Heart Rate / Q000187:drug effects; D008027:Light; D008722:Methods; D010634:Phenobarbital / Q000494:pharmacology; D010991:Plethysmography; D014667:Vasopressins / Q000494:pharmacology
chemical_list: D014667:Vasopressins; D004837:Epinephrine; D010634:Phenobarbital