title: Alteration with age in cardiac activities of rat.
mesh_terms: D000367:Age Factors; D000375:Aging; D000818:Animals; D000831:Animals, Newborn; D004562:Electrocardiography; D006321:Heart / Q000502:physiology*; D008564:Membrane Potentials; D051381:Rats; D011919:Rats, Inbred Strains