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. 2008 Mar 19;36(8):2700–2704. doi: 10.1093/nar/gkn078

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© 2008 The Author(s)

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/2.0/uk/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 3. — Potential quadruplex sequences (A) occurring in upstream regions, (B) in upstream regions which contain SP1 sequence elements (C) in upstream regions which do not contain SP1 sequence elements, (D) which incorporate SP1 sequence elements and are within upstream regions, (E) which do not incorporate SP1 sequence elements and are within upstream regions.