The invention is directed to bioengineered graft prostheses made from two
or more superimposed, chemically bonded layers of processed tissue
material prepared from cleaned tissue material derived from animal
sources. The bioengineered graft prostheses of the invention are prepared
using methods that preserve cell compatibility, strength, and
bioremodelability of the processed tissue matrix. The bioengineered graft
prostheses are used for implantation, repair, or for use in a mammalian
host.