library_construction_protocol: Samples were generated after sorting by CD326+/GFP+/Live/Thy1.2-/LiveDead dye- for Ctrl and TetiTKO mESCs and by CD326+/Live/Thy1.2-/LiveDead dye- for Dnmt TKO mESCs. Genomic DNA was extracted using PureLinkTM genomic DNA mini kit. TruSeq DNA PCR-Free Sample Preparation kit (Illumina, 20015963).