Genomic DNA was purified from tissue, sorted cells or nuclei using the DNeasy Blood and Tissue Kit (Qiagen, Valencia, CA, USA) according to the manufacturer's instructions. MethylC-Seq libraries were constructed as descibed previously [Lister R. et al. Hotspots of aberrant epigenomic reprogramming in human induced pluripotent stem cells, Nature 471, 68-73 (2011)], except library amplification was performed with either PfuTurboCx Hotstart DNA polymerase (Agilent Technologies, Santa Clara, CA, USA) or KAPA HiFi HotStart Uracil+ DNA polymerase (Kapa Biosystems, Woburn, MA, USA).
GEO Accession
GSM1167005