title: Invited commentary.
authors.affiliation: Division of Cardiac Surgery, Massachusetts General Hospital, Edwards 112, 50 Fruit St, Boston, MA 02114, USA. jkwhite@partners.org
authors.forename: Jennifer K
authors.initials: JK
authors.lastname: White
mesh_terms: D000818:Animals; D004195:Disease Models, Animal; D019918:Heart Valve Prosthesis Implantation / Q000379:methods*; D006801:Humans; D011651:Pulmonary Artery / Q000601:surgery*; D011664:Pulmonary Valve / Q000033:anatomy & histology / Q000637:transplantation*; D013552:Swine; D014183:Transplantation, Heterologous