Fig. 6
From: Finding and extending ancient simple sequence repeat-derived regions in the human genome
SSR-cloud annotation of poly-A regions adjacent to annotated Alus. Full length Alus (275–325 bp) were divided into three groups based on their age (roughly corresponding to the three major expansions of Alu, AluJ, AluS, and AluY) and 5′ overlap with poly-A SSR-cloud annotated regions was evaluated. The region expected to carry the poly-A tail was defined as within 30 bp of the Alu terminus. Different cloud stringency extensions are colored with dark blue indicating highest stringency poly-A annotations found, and light blue lowest-stringency poly-A annotations. If no poly-A annotations were found, other SSR-cloud loci found are shown in light gray, and no intersecting SSR annotations found shown in dark gray