Distribution of distant eQTLs across the genome and detection of hotspots. The number of distant eQTLs (y-axis) is plotted against the physical position of the 1Mb-window where they peak (x-axis). In each cross, intervals with an excess of eQTLs relative to the threshold estimated by permutation (dashed lines) were classified as hotspots. This figure refers to Additional file 5: Table S3b.
Cubillos et al. BMC Genomics 2012 13:117 doi:10.1186/1471-2164-13-117