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Force-induced transitions of DNA. (a) Force-extension data showing stretching, melting, and overstretching of a λ-DNA. The data are fit for extensible WLC and FJC models. Reproduced from Ref. [49], Copyright © 2009 IOP Publishing. (b) Force-extension pathways for poly(dA) compared to dsDNA and other ssDNA. Reproduced from Ref. [21], Copyright © 2010 American Physical Society.
