NewslettersESC & iPSC News Derivation of Naïve Human Embryonic Stem Cells Using a CHK1 Inhibitor By Bob - September 20, 2023 0 166 Investigators showed that exposure of frozen human blastocysts to an inhibitor of checkpoint kinase 1 (CHK1) upon thaw greatly enhanced establishment of karyotypically normal late naïve human ESC cultures. [Stem Cell Reviews and Reports] Full ArticleGraphical Abstract