.... 2010; Farcas et al. 2012; He et al. 2013; Wu et al. 2013), we observed that 98.4% of PcG-occupied transcription start sites (TSSs) are also marked by the presence of an experimentally identified, nonmethylated CGI (Fig. 1B; Long et al. 2013). Given the substantial differences
between CGI and non...