Raman spectroscopic studies on the conformational changes of calf thymus DNA ind

We used Raman spectroscopy to study the conformational changes of DNA induced by Cd2+ ions in different Cd2+ concentrations solution. The experimental results show that when the Cd^(2+)/PO^(-)_(2) ratio R increased from 0 to 3.0, the band 835.0 cm^(-1) shifted about 8 cm^(-1), and the overlapping sp