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 to biosynthesize and deposit extracellular matrix components on the material. The cells are then removed to provide the extracellular matrix composite material. In preferred embodiments, the prosthetic valve devices are configured for use in vascular applications.
