Q-T interval in  young and old mammalian embryos.
D000818:Animals; D004562:Electrocardiography; D005071:Evoked Potentials; D005318:Fetal Heart / Q000502:physiology*; D006329:Heart Conduction System / Q000502:physiology*; D051379:Mice / Q000196:embryology; D011690:Purkinje Fibers / Q000502:physiology; D051381:Rats / Q000196:embryology