title: [Maturational changes in the ECG of cattle. I. Ventricular activation].
mesh_terms: D000375:Aging; D000818:Animals; D002417:Cattle / Q000254:growth & development / Q000502:physiology*; D004562:Electrocardiography / Q000662:veterinary*; D006321:Heart / Q000502:physiology*; D016276:Ventricular Function
vernacular_title: Cambios maduracionales en el ECG bovino. I. Activación ventricular.