show Abstracthide AbstractWe generated 5hmC, WGBS and RNAseq of the cells in 5 stages during hES-to-pancreatic endoderm cell differantiation, and investigated the 5hmC correlation with 4 histones (H3K4me1, H3K4me3, H3K27ac and H3K27me3) during this process. Our results showed that 5hmC is dynamically correlate with enhancers' activities. Overall design: Purpose: Determine the roles of 5hmC during hES to pancreatic endoderm cell differentiation process. The whole genome bisulfite sequencing, CMS-IP, ATAC-seq and RNAseq for the 5 stages (ES,DE,GT,FG,PE) have been sequenced.