We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleToo many roads not taken.AuthorsEdwards AM; Isserlin R; Bader GD; Frye SV; Willson TM; Yu FHPublicationNature, 2011, Vol 470, Issue 7333, p163ISSN1476-4687Publication typearticleDOI10.1038/470163a