Described are preferred prosthetic valve devices including a first extracellular matrix material having a second extracellular matrix material deposited thereon. The preferred materials are made by culturing cells in contact with an extracellular matrix graft material in a fashion to cause the cells...http://www.google.co.uk/patents/US20060210597?utm_source=gb-gplus-sharePatent US20060210597 - Prosthetic implants including ECM composite material
