The present application is directed to the field of implants comprising soft tissue for use in implantation in humans. The soft tissue implants of the present application are preferably obtained from xenograft sources. The present application provides a chemical process that neutralizes, removes or substantially reduces antigens from and sterilizes and/or strengthens xenograft implants. The present techniques yield soft tissue implants having superior structural, mechanical, and/or biochemical integrity. The present application is also directed to processes for treating xenograft implants comprising soft tissues such as tendons and ligaments, and to implants produced by such processes.
