https://www.cell.com/fulltext/S0092-8674(13)00645-4 https://www.cell.com/fulltext/S0092-8674(13)00645-4 Sorry, it's 9 here, Aubrey de Gray had a bit different

https://www.cell.com/fulltext/S0092-8674(13)00645-4 https://www.cell.com/fulltext/S0092-8674(13)00645-4 Sorry, it's 9 here, Aubrey de Gray had a bit different characterisation, but this paper is more accepted now.