Cartilaginous focus at the base of the non-coronary semilunar valve of the aorta in rats of different ages.
D000375:Aging; D000818:Animals; D001013:Aorta, Thoracic / Q000033:anatomy & histology*; D001021:Aortic Valve; D001696:Biomechanical Phenomena; D002356:Cartilage / Q000033:anatomy & histology* / Q000502:physiology; D003331:Coronary Vessels; D005260:Female; D006321:Heart / Q000033:anatomy & histology*; D008297:Male; D051381:Rats