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. 2020 Apr 10;120(9):4056–4110. doi: 10.1021/acs.chemrev.9b00439

Figure 22.

Figure 22

(a) Oxygen K-edge spectra of uracil, thymine, cytosine, and guanine together with their molecular structure and the peak assignment.225 (b) Effect on the oxygen K-edge spectra from adding sugar and phosphate groups of DNA to thymine.226