We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleNatural expansion of the genetic code.AuthorsAmbrogelly A; Palioura S; Söll DPublicationNature chemical biology, 2007, Vol 3, Issue 1, p29ISSN1552-4450Publication typearticleDOI10.1038/nchembio847