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. 2007 Nov 13;36(1):144–156. doi: 10.1093/nar/gkm986

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© 2007 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. — QFP distribution in the rDNA. One rDNA repeat is shown, and the center of each QFP sequence is indicated by a downward-extending vertical line. The 35S transcript, containing the 18S, 5.8S and 25S rRNAs, extends from the leftward promoter (arrow) to the left edge of the diagram, and the 5S rRNA promoter is indicated by the arrow pointed to the right. The origin of replication and replication fork block region are indicated by an open circle and closed triangle, respectively.