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RXRα titration spectra at single wavelengths. (A) Fluorescence at 340 nm. Pretransition points and posttransition points are designated by plus signs and times signs, respectively. For other details, see Results. (B) CD ellipticities at 222 nm. Filled circles with error bars are results of SVD estimation of whole spectra at the indicated guanidine concentrations (see Results).
