title: Influence of preparation and immunosuppression upon longevity of grafted aortic valves.
mesh_terms: D000818:Animals; D001013:Aorta, Thoracic / Q000601:surgery*; D001021:Aortic Valve / Q000473:pathology / Q000637:transplantation*; D001379:Azathioprine / Q000627:therapeutic use; D001807:Blood Vessel Prosthesis; D004285:Dogs; D005612:Freeze Drying; D007166:Immunosuppressive Agents / Q000627:therapeutic use*; D007783:Lactones; D008722:Methods; D011108:Polymers; D011422:Propionates; D012756:Sheep; D013552:Swine; D013997:Time Factors; D014021:Tissue Preservation; D014183:Transplantation, Heterologous / Q000401:mortality
chemical_list: D007166:Immunosuppressive Agents; D007783:Lactones; D011108:Polymers; D011422:Propionates; D001379:Azathioprine