Postnatal changes in rat ventricular function.
D000375:Aging; D000818:Animals; D000831:Animals, Newborn; D001827:Body Height; D001835:Body Weight; D006321:Heart / Q000033:anatomy & histology / Q000502:physiology*; D006334:Heart Function Tests; D006352:Heart Ventricles / Q000254:growth & development; D008854:Microscopy, Electron; D008931:Mitochondria, Muscle; D009206:Myocardium / Q000032:analysis; D051381:Rats; D016276:Ventricular Function