Chromatin Landscapes of Retroviral and Transposon Integration Profiles
For each of the systems SB, PB, and MMTV, the unselected integrations are divided into genic integrations, integrations occurring within 1(TSS_upstream), and integrations occurring within 1 kb downstream of the TSS (TSS_downstream). Genes are divided into 5 groups, based on expression level. The sizes of these groups are indicated on the -axis. For each pair of gene expression level and system, the number of observed integrations is counted, and compared to the number of expected integrations.