Conversely, H3K27ac was enriched in one of the two non-CIN samples at hs1533 near Id4, and hs1172 near Nr2f1 (Fig. 1F,G), which have cortical activity at E11.5 (Visel et al., 2013; Pattabiraman et al., 2014). This evidence concerns the gene ID4 and cervical squamous intraepithelial neoplasia.