We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleActivin a efficiently specifies definitive endoderm from human embryonic stem cells only when phosphatidylinositol 3-kinase signaling is suppressed.AuthorsMcLean AB; D'Amour KA; Jones KL; Krishnamoorthy M; Kulik MJ; Reynolds DM; Sheppard AM; Liu H; Xu Y; Baetge EE; Dalton SPublicationStem cells (Dayton, Ohio), 2007, Vol 25, Issue 1, p29ISSN1066-5099Publication typearticleDOI10.1634/stemcells.2006-0219