Viral integration sites. Plot of false discovery rate (FDR)-adjusted P-values along the genome, in 30-Mbp bins. Small P-values indicate regions where murine leukemia virus (MLV) integrates inside 2-kb regions around FirstEF promoters more frequently than by chance. The FDR cutoff at 10% is shown as a dashed line. The inset of a local area (chromosome 1:153,250,001-153,450,000) indicates FirstEF promoters expanded by 2 kb in both directions, MLV integration sites, RefSeq genes, and unflanked FirstEF sites.