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ECD (mdeg) of DNA–Mn2+ complexes at 3 mM NaCl. The curves represent DNA spectra at different manganese concentrations in sequence: 1, 0 mM MnCl2; 2, 0.05 mM (R = 0.033); 3, 0.10 mM (R = 0.067); 4, 0.25 mM (R = 0.17); 5, 0.50 mM (R = 0.33); 6, 1.00 mM (R = 0.67); 7, 2.50 mM (R = 1.7); 8, 50.00 mM (R = 33); 9, 100 mM (R = 67) MnCl2.
