Fig. 7
H3K9me3 domain characteristics in chicken PGCs compared with ESCs. A Genome browser view (UCSC) of H3K9me3 enrichment profile at a representative region of chicken chromosome 1. Gene positions (from Ensembl and UCSC RefSeq) and expression levels (RNA density track from RNA-seq analysis) are indicated below. B H3K9me3 domain mapping at a region exhibiting contrasted enrichment in PGCs and ESCs. C Counts and size distributions of domains. D Assessment of domain position similarity between PGCs and ESCs. For each cell type, the counts of bases covered by domains (expressed as genome percentages) are categorized into three classes, and the percentage of bases in each class is indicated on the bars. The difference in class distribution between the two cell types is highly significant (p < 2.2 × 10−16 based on the chi-squared test)