The invention provides an article of manufacture comprising a substantially non-immunogenic knee meniscal heterografts for implantation into humans. The invention further provides a method for preparing a knee meniscal heterograft by removing at least a portion of a meniscus from a non-human animal to...http://www.google.com.au/patents/US6093204?utm_source=gb-gplus-sharePatent US6093204 - Meniscal heterografts
