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. 2013 Jan 10;8(1):e53841. doi: 10.1371/journal.pone.0053841

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© 2013 Wang et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Selected frequency distributions of representative DNA duplex helical parameters for B-DNA (black line), Smad1+DNA+Smad1 (blue line), and Smad4+DNA+Smad1 (magenta line) models.