title: The histologic and hemodynamic evaluation of viable heterograft valves.
mesh_terms: D000818:Animals; D001021:Aortic Valve / Q000473:pathology / Q000637:transplantation*; D001792:Blood Platelets; D006328:Cardiac Catheterization; D004285:Dogs; D013552:Swine; D014181:Transplantation Immunology; D014183:Transplantation, Heterologous