title: Continuing improvements in valvular bioprostheses.
mesh_terms: D000818:Animals; D001021:Aortic Valve / Q000601:surgery*; D001705:Bioprosthesis / Q000009:adverse effects; D002114:Calcinosis / Q000209:etiology; D002136:Calcium, Dietary; D006350:Heart Valve Prosthesis / Q000009:adverse effects; D006439:Hemodynamics; D006801:Humans; D008943:Mitral Valve / Q000601:surgery*; D051381:Rats; D013536:Suture Techniques; D014021:Tissue Preservation
chemical_list: D002136:Calcium, Dietary