title: Alteration of the intrinsic heart rate and autonomic nervous tone during the growing process of rats and pigs.
mesh_terms: D000818:Animals; D001341:Autonomic Nervous System / Q000254:growth & development / Q000502:physiology*; D005260:Female; D006339:Heart Rate; D008297:Male; D051381:Rats; D011919:Rats, Inbred Strains; D013045:Species Specificity; D013552:Swine