Homograft heart valves.
D000818:Animals; D001021:Aortic Valve / Q000637:transplantation*; D004285:Dogs; D006801:Humans; D008297:Male; D008875:Middle Aged; D008943:Mitral Valve / Q000637:transplantation*; D011183:Postoperative Complications; D011309:Preservation, Biological; D011664:Pulmonary Valve / Q000637:transplantation*; D014015:Tissue Banks; D014184:Transplantation, Homologous