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Emission spectra of EB bound to CT-DNA in the presence of increasing concentrations of (a) L and (b) [Ag2L2]2+ (from 0 to 190 μM); ([Ethidium Bromide] = 20 μM, [CT-DNA] = 26 μM). Arrow shows the hypochromic changes upon increasing concentration of [Ag2L2]2+.
