title: Irradiation of dihydropyrimidines.
mesh_terms: D004578:Electron Spin Resonance Spectroscopy; D005609:Free Radicals; D011743:Pyrimidines / Q000528:radiation effects*; D011830:Radiation Effects; D011854:Radiochemistry; D013941:Thymine / Q000528:radiation effects; D014498:Uracil / Q000528:radiation effects
chemical_list: D005609:Free Radicals; D011743:Pyrimidines; D014498:Uracil; D013941:Thymine