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. 2013 Sep 2;41(22):10379–10390. doi: 10.1093/nar/gkt781

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© The Author(s) 2013. Published by Oxford University Press.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 3. — Biased selection of PHQS in 60 species in the Ensembl database. Each panel shows the occurrence of PHQS with three G-tracts (3G) in the non-template (red curve) and template (green curve) strands within the ±1-kb region centered at TSS. Similar distribution pattern and strand bias were also present for PHQS with two and four G-tracts (2G and 4G+) as in Figure 2. The species list is ordered according to the species tree provided on the Ensembl Web site to reflect the order of evolution.