http://www.mailonsunday.co.uk/pages/live/articles/news/news.html?in_article_id=444436&in_page_id=1770&in_a_source=
Ok, so it's genetically engineered sheep, but still kinda scary.
Oh man, the comments in that article (I hate to say) are pure comedy gold. And while it's a serious issue that rases many questions about how far we're willing to go to provide safe transplantable organs for humans this just keeps jumping out at me:
Quoteit would have a [...] brain that are partly human and available for transplant.