Observations on the development of the electrocardiogram.
D000818:Animals; D001775:Blood Circulation / Q000502:physiology*; D002642:Chick Embryo; D002800:Cholinesterase Inhibitors / Q000494:pharmacology; D004562:Electrocardiography; D006321:Heart / Q000196:embryology*; D006327:Heart Block / Q000139:chemically induced; D066298:In Vitro Techniques; D010830:Physostigmine / Q000494:pharmacology
D002800:Cholinesterase Inhibitors; D010830:Physostigmine