The concept of bioprosthesis.
D001021:Aortic Valve / Q000637:transplantation; D002114:Calcinosis / Q000473:pathology; D006086:Graft vs Host Disease / Q000473:pathology; D006087:Graft vs Host Reaction; D006351:Heart Valves / Q000473:pathology / Q000637:transplantation*; D006801:Humans; D007249:Inflammation; D008943:Mitral Valve / Q000637:transplantation; D009336:Necrosis; D013997:Time Factors; D014183:Transplantation, Heterologous