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Arrhenius plot of the closing and opening kinetics for the DNA hairpin-loop. (a) MiliQ water; (b) 10 mM Tris/1 mM EDTA (pH 7.5) and 100 mM NaCl; (c) 10 mM Tris and 20 mM MgCl2. The viscosity corrected apparent activation energies are summarized in Table 1.
