title: An electron spin resonance study of several DNA base cation radicals produced by photoionization.
mesh_terms: D003596:Cytosine; D004247:DNA; D004578:Electron Spin Resonance Spectroscopy; D005609:Free Radicals; D010777:Photochemistry; D013936:Thymidine; D013941:Thymine
chemical_list: D005609:Free Radicals; D003596:Cytosine; D004247:DNA; D013941:Thymine; D013936:Thymidine