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. 2012 Dec 26;41(5):e60. doi: 10.1093/nar/gks1343

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© The Author(s) 2012. Published by Oxford University Press.

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

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Figure 4. — Electron microscopic images of DHJS-2 and its derivatives. DHJS-2 and its derivatives were incubated with T4 gp32 to highlight and thicken the single-stranded regions before visualization by electron microscopy. (A) Images of undigested DHJS-2. The thickened, circular regions are the origin bubbles (green). (B) DHJS-2 cross-linked with psoralen before digestion to trap the HJ. Arrow indicates location of junction. (C) Digested and migrated DHJS-2, which creates a hemicatenane in the bubble region. Scale bar = 50 nm.